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Best 2kWh Portable Power Stations in 2026: Jackery vs. Anker vs. EcoFlow vs. BLUETTI

The 2kWh portable power station has become something of a sweet spot for home backup. It is large enough to run a refrigerator, networking equipment, lights, electronics and plenty of other essentials for a meaningful amount of time, but still small enough that one person can theoretically move it without requesting assistance from a forklift.

The problem is that the specifications make many of these batteries look nearly interchangeable. Jackery offers 2,042Wh. Anker and EcoFlow both offer 2,048Wh. BLUETTI gives you 2,073.6Wh.

That difference is almost meaningless in real use.

What matters much more is that one weighs 39.5 pounds while another weighs more than 53 pounds. One accepts 400W of solar while two others accept 1,000W. One delivers 3,000W of AC power while another tops out at 2,200W. Some can add expansion batteries and others cannot.

Those are the differences I would use to choose among them.

After comparing the current 2kWh models, my overall pick is the Anker SOLIX C2000 Gen 2. The Jackery Explorer 2000 v2 is the one I would choose if weight matters most. The EcoFlow DELTA 3 Max Plus is considerably more capable if you need high AC output or expect to expand your system later. The BLUETTI Elite 200 V2 has strong specifications but needs to win on price because it is the heaviest of this group and cannot be expanded.

Disclosure: Gadget Wisdom may earn a commission from qualifying purchases made through Amazon links on this page. I have not personally load-tested all four of these power stations. This comparison is based on current manufacturer specifications, features and the ways I think they make sense for actual backup-power use.

The Four 2kWh Power Stations Compared

Model	Capacity	AC Output	Weight	Max Solar	Expandable?
Jackery Explorer 2000 v2	2,042Wh	2,200W	39.5 lb.	400W	No
Anker SOLIX C2000 Gen 2	2,048Wh	2,400W	41.7 lb.	800W	Yes, to about 4kWh
EcoFlow DELTA 3 Max Plus	2,048Wh	3,000W	About 48.7 lb.	1,000W	Yes, up to 10kWh
BLUETTI Elite 200 V2	2,073.6Wh	2,600W	53.4 lb.	1,000W	No

All four use lithium iron phosphate, or LiFePO4/LFP, battery chemistry. That is what I would want in a power station I expected to keep for years and maintain as emergency equipment rather than something I planned to replace after a few hundred charge cycles.

Best Overall: Anker SOLIX C2000 Gen 2

The Anker SOLIX C2000 Gen 2 strikes the best balance in this group.

It stores 2,048Wh, delivers up to 2,400W of normal AC output and handles a 4,000W peak. Yet it weighs only 41.7 pounds, barely more than the Jackery and considerably less than either the EcoFlow or BLUETTI.

More importantly, Anker did not get the weight down by turning it into a stripped-down battery box. It accepts up to 800W of solar input, provides two high-power USB-C ports capable of up to 140W each, includes a TT-30 outlet and can be expanded with an Anker SOLIX BP2000 Gen 2 battery to roughly 4kWh.

That combination gives it room to grow beyond basic refrigerator-and-router duty without making you carry a 50-plus-pound unit from day one.

Check the Anker SOLIX C2000 Gen 2 on Amazon

Anker also rates the C2000 Gen 2 for a 10ms UPS switchover. I would still use a traditional UPS for sensitive networking equipment and a NAS rather than replacing one with a giant power station merely because the spec sheet says UPS. But it is useful when the C2000 is sitting between the wall and equipment you want to keep running through an outage.

The C2000 Gen 2’s biggest limitation relative to the EcoFlow is output. A 2,400W inverter is enough for a huge range of household equipment, but the EcoFlow’s 3,000W inverter gives it noticeably more headroom for high-draw appliances.

For most people shopping in this size range, though, I think the Anker offers the best compromise.

Best If You Actually Want to Carry It: Jackery Explorer 2000 v2

The Jackery Explorer 2000 v2 is the lightweight champion here, although calling a 39.5-pound battery lightweight requires some generosity with the English language.

Still, the difference is substantial. It is almost 14 pounds lighter than the BLUETTI while storing essentially the same amount of energy.

The Jackery provides 2,042Wh of capacity, 2,200W of continuous AC output and a rated 4,400W surge. It has three AC outlets, USB-C output up to 100W and uses an LFP battery rated by Jackery for 4,000 cycles to at least 70% capacity.

Check the Jackery Explorer 2000 v2 on Amazon

There is a tradeoff. The Explorer 2000 v2 accepts a maximum of 400W of solar input. That is half what the Anker accepts and less than half the 1,000W maximum of the EcoFlow and BLUETTI.

For an overnight outage, that may mean very little. For several days without grid power, it matters quite a bit.

Suppose you have consumed 1,500Wh overnight and wake up to a sunny morning. A theoretical 1,000W solar array has a much better chance of replacing a large portion of that energy during the useful daylight window than a system limited to 400W. Real solar output will of course be lower than the panels’ nameplate rating much of the time because of clouds, sun angle, temperature and other losses.

The Jackery therefore makes the most sense to me for someone who wants a self-contained 2kWh battery, expects to recharge primarily from the wall and values portability more than building a larger solar-backed system.

Most Capable: EcoFlow DELTA 3 Max Plus

The EcoFlow DELTA 3 Max Plus is the brute-force option.

Its battery is still 2,048Wh, virtually identical to the Anker, but EcoFlow pairs it with a 3,000W AC inverter and rates surge output at 6,000W. It also accepts up to 1,000W of photovoltaic input.

That 3,000W output changes what you can realistically attempt.

A refrigerator barely notices whether your power station can supply 2,200W or 3,000W. Neither does a router, television or laptop. But high-draw kitchen appliances, power tools, pumps and other larger loads can bring a smaller inverter much closer to its limit.

Check the EcoFlow DELTA 3 Max Plus on Amazon

EcoFlow also gives this model considerably more room to grow. The company supports configurations from the original 2kWh battery up to approximately 10kWh using compatible extra batteries and the appropriate expansion hardware.

At that point you are moving well beyond the idea of a portable battery sitting next to a refrigerator. You are beginning to assemble a meaningful home-backup system.

The price you pay for all of that capability is not merely financial. The DELTA 3 Max Plus weighs roughly 48.7 pounds. That is manageable, but it is nine pounds heavier than the Jackery. If you expect the battery to live in one part of the house most of the time, I would not care much. If you expect to carry it up basement stairs regularly, I would care quite a lot.

EcoFlow rates the unit for less than 10ms UPS switching and provides four standard 120V AC outlets along with USB and high-current DC outputs. It is the machine I would choose from this group if inverter capability and future expansion mattered more than minimum weight.

BLUETTI Elite 200 V2: Strong Hardware, but Watch the Price

The BLUETTI Elite 200 V2 is an interesting machine because several of its headline specifications are excellent.

It has the largest battery here at 2,073.6Wh, although the difference from 2,048Wh is too small to matter. More importantly, it delivers 2,600W of AC output and accepts as much as 1,000W of solar input.

Those are serious specifications for outage use.

Check the BLUETTI Elite 200 V2 on Amazon

BLUETTI also gives it app control and UPS capability, with a stated switchover within 15ms. Its 1,000W photovoltaic input is particularly attractive if you expect solar charging to be an important part of your backup plan.

Then we get to the compromises.

The Elite 200 V2 weighs 53.4 pounds, making it the heaviest of these four. It is also not directly expandable with BLUETTI’s B80, B230 or B300-series expansion batteries. If you eventually decide that 2kWh is not enough, you cannot simply bolt another battery onto the Elite 200 V2 in the way you can expand the Anker or EcoFlow systems.

That makes the purchase price particularly important.

Portable power stations are discounted so frequently that I would never rank them purely by MSRP. A $300 sale can change the answer. If the BLUETTI is substantially cheaper than the Anker or EcoFlow when you buy, 2,600W of output and 1,000W of solar input can make it an excellent deal. At similar pricing, I prefer the flexibility of the other two.

Why 2,042Wh vs. 2,074Wh Barely Matters

It is very easy to stare at battery-capacity numbers because they provide a nice clean way to rank products.

In this group, don’t bother.

The smallest battery is 2,042Wh and the largest is 2,073.6Wh. The difference is only 31.6Wh, or about 1.5%.

A 100W load would theoretically consume that difference in less than 20 minutes, before accounting for inverter losses and other real-world variables. Differences in efficiency, standby consumption and operating conditions can easily matter as much or more.

For practical shopping purposes, these are all 2kWh batteries.

How Long Will a 2kWh Power Station Run a Refrigerator?

This is one of the most useful applications for a battery in this class, and also one of the hardest to answer with a single number.

A refrigerator does not normally consume its rated wattage continuously. The compressor cycles on and off, and consumption varies substantially by refrigerator size, age, room temperature, how frequently the doors are opened and whether the appliance is recovering after having been without power.

If your refrigerator averages 70W over time, a 2,000Wh battery contains enough theoretical energy for roughly 28 hours. At 100W average consumption, the theoretical number falls to around 20 hours.

You will get less than the simple division suggests because the battery and inverter are not 100% efficient and because you generally do not want to build an emergency plan that assumes every last watt-hour will be available.

A reasonable way to think about a 2kWh station is that it can often keep an efficient refrigerator operating through an overnight outage while simultaneously handling smaller loads such as networking equipment, phones and some lighting. Actual runtime needs to be measured with your refrigerator rather than taken from somebody else’s marketing chart.

Output Watts and Battery Watt-Hours Are Different Things

This causes endless confusion in power-station shopping.

Watt-hours tell you roughly how much energy the battery stores. Watts tell you how much power the inverter can deliver at one moment.

The EcoFlow does not run a 100W refrigerator 36% longer than the Jackery merely because its inverter is rated at 3,000W instead of 2,200W. Their batteries are almost the same size.

The EcoFlow’s larger inverter instead means it can support a heavier collection of simultaneous loads or an individual appliance that demands more power.

Think of battery capacity as the size of the fuel tank and inverter output as the width of the pipe coming out of it.

Do You Actually Need 3,000W of Output?

Probably not if your outage plan consists of a refrigerator, freezer, modem, router, television, laptops, phones and lights.

Those are relatively modest loads. A 2,200W Jackery already provides plenty of headroom for most combinations of them.

The higher-output EcoFlow becomes more compelling when you begin adding devices such as microwaves, kettles, coffee makers, induction burners, larger pumps and power tools.

There is an important catch: a 2kWh battery is still only a 2kWh battery.

Running a 1,500W space heater from one of these stations may be technically possible. It is also an excellent method for turning a large expensive battery into an empty large expensive battery in a little over an hour.

High inverter output gives you the ability to run demanding equipment. It does not create more stored energy.

Solar Input Matters More During a Multi-Day Outage

For the first few hours without electricity, solar charging barely enters my decision. I want the battery charged before the storm and ready to go.

Day two is different.

The Jackery’s 400W maximum solar input is perfectly useful, but the 800W Anker and 1,000W EcoFlow and BLUETTI systems have a much higher ceiling for replenishing a depleted 2kWh battery during limited daylight.

Do not interpret a 1,000W solar-input specification as a promise that you will actually harvest 1,000W all afternoon. Portable panels live in the real world, where clouds exist, sunlight arrives at imperfect angles and trees have an irritating habit of being located exactly where you need the sun.

But a higher input ceiling gives you more opportunity to harvest available sunlight when conditions are good.

This is also where our backup-power strategy begins to extend beyond simply buying a battery. A power station can get you through an outage. A power station with enough generation behind it begins to become a repeatable energy system.

Expansion Changes the Long-Term Value

I would think carefully about whether 2kWh is all you will ever want.

The Anker C2000 Gen 2 can be paired with an expansion battery to reach roughly 4kWh. EcoFlow goes substantially further, supporting DELTA 3 Max Plus configurations up to about 10kWh with compatible expansion batteries and hardware.

The Jackery Explorer 2000 v2 and BLUETTI Elite 200 V2 are much more self-contained propositions.

There is nothing inherently wrong with that. If you want a portable 2kWh box, buying an elaborate expandable ecosystem you will never expand accomplishes very little.

But if this purchase is the first step toward backing up more of the house, expansion becomes one of the most important differences in the table.

What I Would Buy for Different Uses

For General Home Backup: Anker SOLIX C2000 Gen 2

This is my favorite balance. It is relatively light, has plenty of inverter output, accepts 800W of solar and leaves you an upgrade path to around 4kWh.

For Moving Between the House, Car and Campsite: Jackery Explorer 2000 v2

Saving nine or fourteen pounds matters more once you actually start carrying these things. If 2,200W is enough and you do not need a large solar array or expansion battery, the Jackery’s portability is a meaningful advantage.

For Higher-Demand Appliances or a Growing Backup System: EcoFlow DELTA 3 Max Plus

The 3,000W inverter, 1,000W solar input and expansion path up to approximately 10kWh make this the most capable platform in the group. You pay for that capability in weight and, depending on current pricing, potentially money.

For a Good Sale: BLUETTI Elite 200 V2

This may sound faintly complimentary, but it is not meant that way. Power stations are a category where pricing moves dramatically. The Elite 200 V2 gives you 2,600W output and 1,000W solar input. If a promotion puts it materially below the expandable competitors, the value equation can become very favorable very quickly.

Should You Buy a 2kWh Battery or a Generator?

If you have not yet decided that a battery is the right answer, I would not start by choosing among these four.

A battery power station is quiet, can run safely indoors, starts instantly and needs virtually no attention while operating. A combustion generator can keep producing electricity for days as long as you can safely operate it outdoors and keep supplying fuel.

Those are fundamentally different advantages.

We have a full comparison in our guide to portable power stations vs. generators for power outages.

A hybrid system can also make sense: use a battery overnight for quiet indoor power, then use a generator for larger daytime loads and to replenish the battery. We will be digging further into that approach as we expand our home backup-power coverage.

My Ranking

If all four cost approximately the same amount, this is how I would rank them:

Anker SOLIX C2000 Gen 2 — best overall balance of weight, output, charging and expansion.
EcoFlow DELTA 3 Max Plus — best capability, especially if 3,000W output or major expansion matters.
Jackery Explorer 2000 v2 — best portable choice and arguably the better buy than either of the first two for someone who will never need expansion or heavy loads.
BLUETTI Elite 200 V2 — excellent output and solar capability, but its weight and lack of expansion make price particularly important.

I would not treat that ranking as permanent. Check actual prices before buying. If one of these is $400 cheaper than the others during a sale, that is a real specification too.

The Bigger Question: What Are You Trying to Keep Running?

Buying a 2kWh power station because 2kWh sounds substantial is backwards.

Make a list first. Refrigerator. Freezer. Internet. NAS. CPAP. Furnace blower. Sump pump. Television. Lights. Microwave. Whatever actually matters in your house.

Then look at both starting power and energy consumption.

That exercise may tell you that a 1kWh battery is plenty. It may tell you that even 2kWh is nowhere near enough. It may also tell you that the best solution is not a larger battery but a generator, solar panels, an expansion battery or some combination of them.

That is where I want to take this series next. The useful question is no longer simply whether portable power stations work. They do. The useful question is how much backup power your particular house actually needs—and how to build it without buying thousands of dollars of battery that sits unused in a corner.

Published on September 10, 2026

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Portable Power Station vs. Generator for a Power Outage: Which Should You Buy?

Disclosure: As an Amazon Associate I earn from qualifying purchases. Product links may earn a commission at no extra cost to you.

If you are buying backup power for a home outage, the easiest mistake is to compare the biggest watt numbers on the boxes.

A 2,200-watt portable power station and a 2,200-watt generator sound as though they should do roughly the same job. They do not.

A portable power station stores a finite amount of electricity in a battery. A generator converts fuel into electricity while it is running. The battery is quiet, simple to use and produces no combustion exhaust. The generator requires fuel, maintenance and a safe outdoor operating location, but it can keep producing electricity long after a battery of similar price and size has been emptied.

That leads to the question that actually matters:

What do you need to keep running, for how long, and do you have a safe place to operate a generator?

For an apartment, a shorter outage or a refrigerator plus electronics overnight, I would often rather have a portable power station. For a multi-day outage, a well pump, substantial 240V loads or much more of the house, a generator becomes considerably harder to replace.

For some homeowners, the best answer is not battery or generator. It is both.

Portable Power Station vs. Generator: The Short Answer

Situation	Usually the Better Choice
Apartment or condo	Portable power station
Outage lasting a few hours	Portable power station
Quiet overnight backup	Portable power station
Refrigerator, lights, phones and internet equipment	Usually portable power station
CPAP and modest overnight loads	Usually portable power station
Multi-day outage	Usually generator
No safe outdoor generator location	Portable power station
Need to replenish power quickly during a long outage	Generator
Large 120V or 240V household loads	Larger generator or substantially larger battery system
Selected house circuits through transfer equipment	Large generator or purpose-built home battery system
Want quiet power plus long-duration backup	Battery + generator

Watts and Watt-Hours Are Not the Same Thing

This is the key to understanding the entire comparison.

Watts measure how much power a device is using or a power source can deliver at a particular moment.

Watt-hours measure energy over time. On a battery, watt-hours tell you roughly how much electricity is stored.

The Jackery Explorer 2000 v2, for example, stores 2,042Wh and can deliver up to 2,200W of continuous AC output.

The Honda EU2200i has a remarkably similar maximum output number: 2,200W, with 1,800W rated continuous output.

Yet the Jackery contains a little over 2kWh of stored electricity. Once that energy is gone, it must be recharged.

The Honda does not have a comparable fixed energy capacity. It produces electricity by burning gasoline. When its tank is empty, the engine can be shut down, allowed to cool and safely refueled. With additional fuel available, it can continue producing electricity.

So two products with “2200 watts” prominently attached to their names can behave very differently during the second or third day of an outage.

How Long Does a 2kWh Portable Power Station Last?

A useful first estimate is:

usable battery energy ÷ average load = approximate runtime

You should not simply divide the advertised battery capacity by the appliance wattage and assume every stored watt-hour reaches the appliance. The inverter, electronics and battery-management system consume some energy, and efficiency changes with the load.

For rough outage planning, suppose we use a conservative 85% usable-AC assumption for a 2,042Wh battery. That leaves about 1,736Wh available to the connected AC loads.

Average Load	Approximate Runtime at 1,736Wh Usable
50W	About 35 hours
100W	About 17 hours
200W	About 8.7 hours
500W	About 3.5 hours
1,000W	About 1.7 hours

Those are planning examples, not manufacturer runtime guarantees. Real appliances cycle on and off, inverter efficiency varies, batteries behave differently with temperature and load, and startup surges can matter even when average consumption is modest.

A refrigerator illustrates the problem nicely. Its compressor may draw substantially more power when running than the refrigerator averages over an entire day. If the compressor runs only part of the time, estimating runtime from its maximum running wattage can be far too pessimistic.

If an appliance matters enough that you are buying backup power specifically for it, measuring its actual consumption is much better than relying on a generic internet wattage chart.

Where a Portable Power Station Wins

It does not produce combustion exhaust

A battery power station does not burn gasoline or propane. That eliminates the carbon-monoxide problem created by an engine-driven generator.

Portable power stations can generally be used inside when operated according to the manufacturer’s instructions, including their temperature, moisture, clearance and ventilation requirements. They are still large lithium-battery systems and should be treated as electrical equipment, not as indestructible boxes you can leave anywhere.

But from an outage-planning perspective, being able to bring your backup power to the refrigerator, bedroom or network equipment without running a combustion engine is an enormous advantage.

It is much quieter

A portable power station may run cooling fans, particularly at higher loads or while charging, but it does not have an engine running outside all night.

That makes batteries particularly attractive for overnight refrigeration, internet equipment, lights, phones, laptops, CPAP machines and other moderate loads.

It starts instantly

If the battery is charged, there is very little outage-day setup. Plug in the equipment you need and turn on the appropriate output.

There is no gasoline to pour, oil level to check, engine to start or outdoor extension-cord route to establish after the lights have already gone out.

It may be the only realistic choice in an apartment

If you live in an apartment, condominium or dense urban setting without an appropriate outdoor location, a combustion generator may not be a practical option at all.

A power station gives renters and apartment owners access to a meaningful amount of backup electricity without needing a yard or generator installation.

Two 2kWh Portable Power Stations I Would Consider

For meaningful home-outage backup, I find the roughly 2kWh class much more interesting than the small camping batteries often marketed as emergency power.

Two current models illustrate different approaches particularly well.

Jackery Explorer 2000 v2: The Simpler, Lighter 2kWh Option

The Jackery Explorer 2000 v2 packs just over 2kWh into a surprisingly manageable package.

2,042Wh LiFePO4 battery
2,200W rated AC output
4,400W instantaneous peak output
Three AC outlets
39.5 lb
Up to 400W DC/solar input
100W USB-C output plus additional USB outputs
Jackery rates the battery for 4,000 cycles to at least 70% remaining capacity

Its biggest advantage is portability for the capacity. At 39.5 pounds, it is not something I would want to carry casually all day, but it is still a one-person lift for many buyers.

Its biggest limitation is equally clear: the Explorer 2000 v2 does not support expansion batteries. The capacity you buy is the capacity you have.

That is not necessarily a problem. If the goal is a straightforward battery that can move between a refrigerator, electronics, camping trips and emergency use, the lack of a larger battery ecosystem may not matter.

I would choose the Jackery if: I wanted a relatively light, straightforward 2kWh unit and did not expect to expand it into a larger battery system later.

Check the current Jackery Explorer 2000 v2 price on Amazon

Anker SOLIX C2000 Gen 2: Better If You Might Expand

The Anker SOLIX C2000 Gen 2 begins with almost exactly the same battery capacity but takes a more expandable approach.

2,048Wh LiFePO4 battery
2,400W continuous AC output
4,000W peak output
41.7 lb
Up to 800W solar input
TT-30 outlet in addition to standard AC outlets
10ms specified UPS transfer time
Expansion with one 2,048Wh BP2000 Gen 2 battery for roughly 4kWh total capacity
Anker rates the battery for 4,000 cycles

The solar input is especially interesting for the backup-power use case. An 800W input ceiling does not mean you will collect 800W from panels all day, but it gives you considerably more potential replenishment than a 400W input limit when sunlight and panel conditions cooperate.

The expansion port also changes the long-term decision. You can start with about 2kWh and later add another roughly 2kWh without replacing the original unit.

Expansion increases stored energy, not the inverter’s continuous output. A larger battery lets a given load run longer; it does not magically turn a 2,400W power station into a 5,000W power source.

I would choose the Anker if: I wanted a 2kWh unit now but cared about expansion, faster solar replenishment or RV-style connectivity later.

Check the current Anker SOLIX C2000 Gen 2 price on Amazon

Where a Generator Wins

The outage lasts longer than the battery

This is the central generator advantage.

A 2kWh battery may be excellent for an evening, overnight or carefully managed collection of critical loads. But if the grid is still down after the stored energy is gone, you need a way to put energy back into it.

That might be utility power, solar panels, a vehicle charging system or another battery.

Or it can be a generator.

With an adequate fuel supply, a generator can continue producing electricity through an outage that lasts for days. You still have to store fuel safely, maintain the engine and refuel according to the manufacturer’s instructions, but total energy is no longer limited to whatever was inside a battery when the outage began.

You have larger loads

A 2,200W or 2,400W battery power station can run considerably more than a phone charger and a lamp. But there is a large gap between “power several important appliances” and “power a significant portion of an electrically demanding house.”

Central air conditioning, large well pumps, electric water heaters, electric cooking equipment, electric dryers and combinations of major appliances can quickly overwhelm a small portable battery.

A larger generator can supply several times as much continuous power.

You need 240V

This is an important limit that is easy to miss when people shop only by wattage.

The Jackery Explorer 2000 v2 and Anker SOLIX C2000 Gen 2 discussed here are 120V portable power stations. Some household equipment requires 240V.

The Westinghouse generator farther down this article provides 120/240V output. That moves it into a very different home-backup class.

Honda EU2200i: What a Small Generator Does Better

The Honda EU2200i is useful in this comparison because its maximum watt rating is almost identical to the Jackery’s continuous output.

1,800W rated output
2,200W maximum output
120V inverter generator
0.95-gallon gasoline tank
Honda rates runtime at about 3.2 hours at rated load
Honda rates runtime at about 8.1 hours at one-quarter load
47.4 lb dry weight
48 to 57 dB(A), depending on load
CO-MINDER carbon-monoxide monitoring/shutoff system

Notice what is strange about that comparison.

The Jackery actually has a higher continuous output rating: 2,200W versus the Honda’s 1,800W.

But the Honda can produce far more total energy during a long outage because you can supply additional gasoline. A second gallon of fuel extends the useful life of the generator. There is no equivalent way to pour another kilowatt-hour into an empty non-expandable Jackery.

This is why watt ratings alone are such a poor way to decide between batteries and generators.

I would choose the Honda if: my loads were modest but the outage could last long enough that a 2kWh battery would clearly be insufficient.

Check the current Honda EU2200i price on Amazon

Westinghouse iGen12000DFc: A Completely Different Class of Backup Power

The Westinghouse iGen12000DFc is deliberately not a close competitor to the two 2kWh batteries above.

It shows what happens when the goal changes from powering a collection of essentials to supplying serious household backup power.

9,000W running / 12,000W peak on gasoline
8,100W running / 11,000W peak on propane
120/240V output
Dual-fuel gasoline and propane operation
7.9-gallon gasoline tank
Up to 19 hours at 25% load on gasoline, according to Westinghouse
About 11 hours at 50% load on gasoline
About 9 hours at 25% load on a 20 lb propane tank
About 5 hours at 50% load on a 20 lb propane tank
Less than or equal to 3% total harmonic distortion
120/240V 50A and 30A outlets suitable for properly configured transfer equipment
CO sensor with automatic shutdown
Electric, remote and recoil starting
189 lb dry weight

This is not something you casually carry to the refrigerator. At nearly 190 pounds before fuel, it is portable in the generator sense: it has wheels and can be moved into position. It is not portable in the same sense as a 40-pound battery.

What you gain is a radically larger power envelope.

At 9,000 running watts on gasoline, the iGen12000DFc can potentially support combinations of household loads that make little sense on a 2,000Wh portable battery. Its 240V capability also opens the door to equipment the Jackery and Anker examples here cannot directly power.

That does not mean every house can simply plug in and run normally. Whether a generator can support your home depends on the actual loads, their startup requirements, how circuits are connected and what is running simultaneously.

I would choose a generator in this class if: I wanted to move beyond extension-cord backup for a few appliances and toward substantial selected-circuit home backup, with the electrical connection designed correctly for the house.

Check the current Westinghouse iGen12000DFc price on Amazon

Portable Generator Safety Is a Major Part of the Buying Decision

A generator’s long runtime is extremely useful. The tradeoff is that you are operating a combustion engine during an emergency.

Carbon monoxide is the most important danger.

The U.S. Consumer Product Safety Commission’s current guidance says portable generators should be operated outside only, at least 20 feet from homes and buildings, with the exhaust directed away from windows, doors and vents.

Do not run a generator in a house, basement, shed, crawlspace or garage. An open garage door does not make an attached garage a safe generator location.

The CPSC also recommends working carbon-monoxide alarms on every level of the home and outside sleeping areas.

You can read the agency’s current guidance here: CPSC generator and carbon-monoxide safety guidance.

Both generators in this article have automatic CO-monitoring shutdown systems. Those are valuable safety features. They do not make it safe to operate a generator indoors or too close to a building.

Do Not Backfeed Your House Through a Wall Outlet

A large generator such as the Westinghouse becomes much more useful when it can supply selected household circuits, but this needs to be done correctly.

Do not try to energize your house by connecting a generator to an ordinary wall receptacle with a male-to-male cord. This practice, usually called backfeeding, can create electrocution and fire hazards and can energize utility-side wiring unexpectedly.

The CPSC specifically warned again about these cords in 2026.

If a generator will feed household wiring, use appropriate transfer equipment or an approved interlock arrangement installed for the application. Have a qualified electrician determine what is appropriate for your panel, generator and local code requirements.

That is an additional cost compared with carrying a battery to an appliance, but it also creates a much more useful home-backup system.

What About a Refrigerator?

A refrigerator is one of the most compelling uses for a 2kWh portable power station.

Food preservation matters during an outage, but refrigerators do not necessarily consume their full running wattage continuously. The compressor cycles.

A battery therefore may provide much more useful refrigerator time than you would guess from looking only at a compressor’s running wattage.

The catch is startup surge. Compressors can briefly demand substantially more power when they start.

Before assuming any battery will run your refrigerator, check the actual appliance and ideally measure its consumption. The same principle applies to freezers.

What About a Sump Pump?

Sump pumps are another attractive outage load, but they are more demanding than their normal running wattage can suggest.

The motor may require a sizable startup surge each time the pump starts. A pump that appears to fit comfortably within a power station’s continuous output can still exceed its surge capability.

Runtime also depends on something you cannot know from the pump’s wattage alone: how often it has to run. During a major storm, that may be much more often than during normal weather.

If a sump pump is the reason you are buying backup power, size around the actual pump and a reasonably bad water-inflow scenario rather than an average day.

What About a Well Pump?

Well pumps deserve extra scrutiny because many are 240V loads.

If your well pump requires 240V, neither the Jackery Explorer 2000 v2 nor the Anker SOLIX C2000 Gen 2 in this article can directly power it from their 120V AC outputs.

A 120/240V generator such as the Westinghouse may be a much more natural fit, assuming its capacity and the home’s electrical setup are appropriate for the pump.

Can a Portable Power Station Run an Air Conditioner?

Sometimes.

A small window air conditioner is a very different load from a large central-air system. Compressor startup demand matters, and even an air conditioner that a 2kWh battery can successfully start may drain that battery rapidly.

There are portable battery systems much larger than the two examples here, including expandable systems designed around 240V home backup. At that point, however, you are no longer comparing a $1,000-ish portable battery conceptually with a small generator. You are designing a substantially larger energy system.

Electric Space Heating Changes the Math Very Quickly

Resistance heat is one of the fastest ways to empty a portable battery.

A 1,500W space heater running continuously would theoretically consume 1.5kWh every hour before accounting for inverter losses. A 2kWh battery is therefore a poor long-duration substitute for ordinary electric heat.

If winter outage preparation is the goal, consider the power demands of the home’s actual heating system. A gas or oil furnace may need only enough electricity for controls, ignition and a blower, while electric resistance heating can require vastly more energy.

Solar Panels Help, but They Do Not Make a Battery Infinite

The phrase “solar generator” makes this part of the market sound more magical than it is.

A solar panel is a way to put energy back into the battery. Whether it replaces energy as quickly as you consume it depends on panel capacity, weather, season, shade, orientation and the power station’s input limit.

The Jackery Explorer 2000 v2 accepts up to 400W of DC solar input. The Anker SOLIX C2000 Gen 2 accepts up to 800W.

Neither number means you will receive that output continuously from sunrise to sunset.

Imagine your essential loads consume 3kWh per day and your panels produce only 1.5kWh that day. Solar has extended your outage runtime substantially, but the battery is still losing a net 1.5kWh per day.

On a clear day with an appropriately sized array, the equation may look much better. In miserable storm weather, it may look much worse.

This is why foldable solar deserves its own buying decision rather than being treated as a free infinite-fuel attachment to every power station.

Why Battery + Generator May Be the Best Home-Outage Combination

The more I think about backup power, the less I view batteries and generators as natural enemies.

They are good at almost opposite things.

A battery is excellent for:

quiet overnight power
internet and network equipment
refrigerators and freezers
lights
phones and laptops
short interruptions
indoor loads where an outdoor generator would be inconvenient
instant power without starting an engine

A generator is excellent for:

outages lasting days
larger loads
240V equipment when the generator supports it
selected household circuits through properly installed transfer equipment
replenishing batteries when solar or grid charging is unavailable

That creates a surprisingly sensible hybrid system.

You can use the battery during quiet periods and overnight. Run the generator when larger loads need power or when the battery needs to be replenished. Then shut the engine down again instead of listening to it run for hours merely to support a refrigerator, router and a few lights.

This arrangement does cost more because you are buying two forms of backup power. But it also reduces the need to force either one to do a job it is poorly suited to do.

Where a UPS Still Fits

A portable power station does not replace a UPS.

A UPS solves a different problem: maintaining power automatically when electricity disappears for a moment, protecting equipment from interruption and giving electronics time to ride through an outage or shut down properly.

If your concern is keeping a router and modem alive through short outages, see my guide to the best UPS for a router and modem.

For larger home networks, NAS devices, PoE cameras and switches, I have a separate guide to the best UPS for a network closet, NAS and PoE equipment.

A portable power station becomes interesting when the problem has moved beyond “don’t let this reboot” and toward “I want meaningful stored electricity for hours.”

There is one more wrinkle for internet backup: supplying electricity to your modem and router does not guarantee that your ISP’s equipment upstream from your house still has power. I cover that in Will Your Internet Work During a Power Outage?

What I Would Buy for Different Outage Scenarios

Apartment or condo

I would buy a portable power station.

Unless you have an unusually suitable outdoor setup and building rules that permit it, the generator’s exhaust and placement requirements make it a poor fit.

House, mostly worried about short outages

I would start with a roughly 2kWh power station.

For a refrigerator, network equipment, phones, lights and other modest loads, it provides useful backup without turning every outage into a small-engine project.

The Jackery Explorer 2000 v2 would be my simpler choice. The Anker SOLIX C2000 Gen 2 becomes more appealing if expansion or higher solar input matters.

House, modest loads but realistic multi-day outages

I would want a generator.

The Honda EU2200i is compelling if 1,800W of continuous output is enough for the equipment you actually intend to run.

Its advantage is not that it produces more watts than a 2kWh battery. It does not. Its advantage is that additional gasoline provides additional energy.

House, substantial backup through the electrical panel

I would look at a much larger generator or a much larger home-battery system.

The Westinghouse iGen12000DFc is an example of the generator route: 120/240V output, 9,000 running watts on gasoline and connections intended to work with properly designed home transfer equipment.

Before buying something this large, I would identify the circuits and loads I actually expect it to support and have the house connection planned correctly. Buying 12,000 peak watts first and figuring out the electrical system afterward is backwards.

House where outages are both frequent and potentially long

I would seriously consider both battery and generator.

The battery makes the outage much nicer to live through. The generator prevents stored energy from becoming the limiting factor.

My Bottom Line

Do not decide between a portable power station and a generator by comparing the biggest watt number in the product name.

Start by making a list of what actually needs power. Determine whether any of it requires 240V. Pay attention to motor and compressor startup loads. Decide whether you are preparing for two hours, twelve hours or four days.

Then ask where the next unit of energy comes from.

If you need a finite amount of quiet, convenient electricity, a portable power station is often the more pleasant solution.

If you need to keep producing electricity for as long as the utility remains down, a generator retains an enormous advantage.

And if outages matter enough that you want both convenience and endurance, battery plus generator may be the most capable answer of all.

Published on September 10, 2026

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10-Year Sealed Battery vs. Replaceable-Battery Smoke Alarms: Which Should You Buy?

If you are replacing an old smoke detector today, you may encounter a choice that barely existed the last time you bought one.

Do you buy a traditional smoke alarm with a battery you replace yourself?

Or do you buy one with a sealed battery designed to last for the life of the alarm?

For a simple battery-powered smoke alarm, I generally prefer the sealed-battery approach.

But it is not automatically the right answer for every house.

Replaceable batteries still have advantages. Hardwired systems complicate the question. And a label saying “10-year battery” does not mean you install the alarm and ignore it for a decade.

You still need to test it.

The alarm can still fail.

And when a sealed unit reaches the end of its life, you replace the entire alarm, not the battery.

Quick Answer: Sealed or Replaceable Battery?

If I were installing a new battery-only smoke alarm today, I would usually choose a quality 10-year sealed-battery model. Many governments have even mandated this.

The biggest advantage is simple:

There is no replaceable battery for someone to forget, remove or neglect.

That is particularly attractive for:

vacation homes;
rental properties;
high ceilings;
older relatives’ homes;
and anywhere routine battery changes are likely to be forgotten.

I would still consider a replaceable-battery alarm when:

upfront cost matters;
I specifically want to be able to replace the battery myself;
I already maintain my alarms on a regular schedule;
or the correct alarm for an existing installation uses a replaceable battery.

If your home currently has hardwired interconnected alarms, do not replace them with independent battery-only alarms merely because sealed batteries are convenient. Use equipment appropriate for the existing system and applicable local requirements.

Two Current Examples

First Alert currently sells smoke alarms using both approaches.

First Alert SM210: Sealed 10-Year Battery

The First Alert SM210 is a battery-powered photoelectric smoke alarm with a sealed lithium battery designed for a 10-year service life.

It also has:

a slim profile;
First Alert’s Precision Detection technology;
an end-of-life warning;
an 85 dB alarm;
and compliance with the current UL 217 10th Edition standard.

The battery is not replaceable. When the alarm reaches end of life, you replace the alarm.

Check the First Alert SM210 on Amazon

First Alert SMI100: Replaceable 9V Battery

The First Alert SMI100 takes the traditional approach. It operates from a replaceable 9V alkaline battery.

It includes:

an easy-access battery compartment;
an end-of-life warning;
First Alert’s Precision Detection technology;
an 85 dB alarm;
and a 10-year limited warranty.

The Amazon listing below is currently a two-pack.

Check the First Alert SMI100 two-pack on Amazon

These are useful examples of the two battery strategies, but they are not identical alarms with different batteries. The SM210 uses a photoelectric sensor, while the SMI100 uses an ionization sensor. So I would not use their prices or performance to claim that one battery design itself produces better smoke detection.

Sealed vs. Replaceable Battery Smoke Alarms

Feature	10-Year Sealed Battery	Replaceable Battery
Routine battery changes	Normally none	Required
Battery can be removed	No	Yes
Upfront cost	Often higher	Often lower
Future battery purchases	Normally none	Yes
Monthly testing	Still required	Still required
When battery reaches end of life	Replace alarm	Replace battery
Biggest advantage	Less maintenance	Easy battery replacement

The Best Argument for a Sealed Alarm Is Human Behavior

Saving a few dollars on replacement batteries is nice.

That is not the main reason I like sealed alarms.

The real advantage is eliminating a common failure point:

the person responsible for changing the battery.

People forget.

They postpone it.

A detector begins chirping at 2 a.m., somebody removes the battery to stop the noise, and somehow the replacement never happens.

A sealed alarm removes that possibility.

There is no 9V battery to borrow for something else and no empty battery compartment that can quietly remain empty for months.

Why I Like Sealed Alarms for Vacation Homes

Vacation properties are an especially good use case.

If nobody lives in a house every day, routine maintenance is easier to miss.

It may also be hard to remember whether the battery was changed last spring, last fall or three years ago.

A sealed long-life alarm reduces that maintenance burden.

You should still:

test the alarms regularly;
check their manufacture dates;
pay attention to fault and end-of-life signals;
and replace any alarm that does not work properly.

Sealed does not mean maintenance-free.

It means there is one less maintenance task.

High Ceilings Are Another Good Use Case

Changing a battery is trivial when a detector is easily reached.

It becomes considerably more annoying when the alarm is above:

a staircase;
a vaulted ceiling;
or another awkward location.

If a battery change requires a large ladder every year, reducing routine battery replacement has real value.

You still need safe access to test and eventually replace the alarm.

Can a 10-Year Smoke Alarm Still Chirp?

Absolutely.

The sealed battery eliminates the familiar annual low-battery replacement cycle.

It does not eliminate every warning an alarm can produce.

A sealed alarm may chirp or otherwise alert you because of:

a fault;
an end-of-life condition;
or another problem defined by the manufacturer.

Eventually an end-of-life warning is expected.

At that point, the answer is generally to replace the alarm rather than hunt for a battery compartment that does not exist.

If you are already fighting this problem, see our guide to why smoke detectors can keep chirping even after a battery replacement.

Does a 10-Year Battery Definitely Last 10 Years?

I would not interpret “10-year battery” as an unconditional guarantee that every individual alarm will work for precisely a decade. I’ve experienced many that have not.

The product is designed around a long-life battery and the expected service life of the alarm.

But electronics can fail.

Environmental conditions matter.

If an alarm fails after six years, you do not leave it on the ceiling for another four because the package said “10-year.”

You replace a failed alarm.

You Still Have to Test a Sealed Alarm

This is the most important misconception to avoid.

A sealed battery does not eliminate testing.

Smoke alarms should still be tested regularly using their built-in TEST button.

That applies whether the alarm uses:

a replaceable 9V battery;
AA batteries;
a sealed lithium battery;
or household AC power with a backup battery.

Our guide to testing a smoke detector battery correctly explains why the test button and battery condition are related but not exactly the same question.

The Advantage of a Replaceable Battery: You Can Replace It

There is something appealingly simple about the traditional approach.

Battery gets weak.

Open the compartment.

Install another one.

Test the alarm.

Done.

If the battery itself fails prematurely, you do not discard the whole smoke detector.

And if you are disciplined about testing and maintenance, a replaceable-battery smoke alarm is perfectly practical.

Replaceable-Battery Alarms Can Cost Less Up Front

If you are buying eight or ten smoke detectors at once, even a modest difference in price per alarm can add up.

That makes inexpensive replaceable-battery models attractive.

The First Alert SMI100 two-pack, for example, gives you two conventional battery-powered detectors in one purchase.

But remember to include future batteries in the economics.

A replaceable-battery alarm may cost less today while requiring multiple batteries during its service life.

I would not make a safety-equipment decision over a tiny long-term price difference, but the sealed model’s higher initial price does buy convenience.

What About Hardwired Smoke Alarms?

This is where the comparison becomes more complicated.

A hardwired smoke alarm receives power from the house and generally uses a backup battery.

Modern hardwired alarms may have:

a replaceable backup battery;
or a sealed backup battery.

If your house already has interconnected hardwired alarms, I would normally replace them with compatible hardwired equipment rather than switching to stand-alone battery models.

Interconnection is valuable because one alarm detecting smoke can cause other interconnected alarms around the house to sound.

Do Not Assume Every Hardwired Alarm Is Plug-Compatible

Two smoke alarms may look nearly identical from the room while using different wiring connectors behind the mounting plate.

When replacing a hardwired alarm, check:

manufacturer;
model;
connector;
interconnection compatibility;
and any approved adapter requirements.

Do not improvise household wiring simply to make a detector fit.

What About Smoke and Carbon Monoxide Combination Alarms?

You can also find both battery approaches in combination smoke-and-CO alarms.

These can reduce the number of separate devices you need, although you should pay attention to the manufacturer’s replacement interval and the requirements for proper placement.

If you are replacing several alarms throughout a house, see our guide to the best smoke and carbon monoxide detectors.

Which Would I Buy?

For a new battery-only smoke-alarm installation, I would generally buy the sealed model.

A current example is the First Alert SM210.

I particularly like the sealed approach for:

vacation homes;
rental properties;
hard-to-reach locations;
and homes where routine maintenance is likely to get forgotten.

I would choose a replaceable-battery model when I specifically wanted easy battery replacement or wanted to minimize the initial cost.

The First Alert SMI100 is a straightforward current example.

Frequently Asked Questions

Are 10-year sealed smoke detectors better?

They are more convenient because they eliminate routine battery replacement and make it much harder for someone to leave the alarm without a battery. They still require regular testing and eventual replacement.

Can you replace the battery in a sealed smoke detector?

Normally no. The internal battery is not designed for routine replacement. When the alarm reaches end of life or develops an unrecoverable fault, the entire alarm is replaced.

Do sealed smoke alarms still chirp?

Yes. They can produce fault or end-of-life warnings even though there is no removable low battery to replace.

Do you still have to test a 10-year smoke detector?

Yes. A long-life battery does not remove the need to regularly test the alarm with its TEST button.

Is a replaceable-battery smoke detector unsafe?

No. A properly installed and maintained replaceable-battery alarm can work perfectly well. The disadvantage is that it depends on somebody keeping a working battery installed.

Does the First Alert SM210 have a replaceable battery?

No. The SM210 uses a sealed lithium battery designed around a 10-year service life.

What battery does the First Alert SMI100 use?

The SMI100 uses one replaceable 9V alkaline battery.

Is the SM210 the same alarm as the SMI100 except for the battery?

No. They also use different smoke-sensing technologies: the SM210 is photoelectric while the SMI100 is ionization. They are useful examples of the two battery approaches, but they should not be treated as otherwise identical products.

My Preference Is Simple: Remove One Thing That Can Be Forgotten

A replaceable-battery smoke alarm can do its job perfectly well.

My preference for a sealed alarm is mostly about human behavior.

There is no annual battery replacement to remember.

There is no battery to remove because the alarm started chirping in the middle of the night.

There is no empty compartment waiting for somebody to remember to buy another 9V battery.

You still need to test the alarm.

You still need to respond if it reports a fault.

And you still need to replace it when its service life is over.

But eliminating one recurring maintenance task seems worthwhile to me.

For a straightforward new battery-powered installation, I would generally choose the sealed First Alert SM210.

If I specifically wanted replaceable batteries or a lower-cost conventional design, I would look at the First Alert SMI100 two-pack.

And whichever type you buy, put it on the ceiling and test it.

A slightly less sophisticated smoke alarm that is installed and working is much more useful than the perfect one still sitting in an Amazon box.

Published on September 7, 2026

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Why You Should Buy a Mechanical Keyboard Now

I have a problem.

I keep buying mechanical keyboards.

I only have one set of hands. I do not type with my feet. There is no rational reason for one person to need this many keyboards.

And yet I keep finding reasons to try another one.

Part of that is because mechanical keyboards are fun to experiment with. But there is a more practical point here:

If you spend hours every day using a computer, you should give considerably more thought to the keyboard under your hands.

People routinely spend $1,500 on a laptop, hundreds of dollars on a monitor and perhaps another few hundred on a phone they replace every couple of years.

Then, when they dock the laptop, or use a desktop system, they type all day on a $15 keyboard that came free in the box.

You do not have to become a keyboard obsessive.

You do not need to memorize the difference between the explosion of different switch options that have come out.

You definitely do not need to spend $400.

But mechanical keyboards have become so inexpensive, varied and practical that I think almost anyone who types regularly should at least try one.

What Is a Mechanical Keyboard?

On a traditional mechanical keyboard, each key uses an individual mechanical switch.

Press the key and the switch physically actuates.

Other common keyboards use membrane, rubber-dome or scissor-switch mechanisms instead.

There is nothing inherently wrong with those designs. Some laptop keyboards in particular can be quite good.

But mechanical switches give manufacturers—and you—far more control over how the keyboard feels.

You can choose:

how much resistance a key has;
whether you feel a bump when it activates;
whether it makes a click;
how far the key travels;
how tall the keyboard is;
and, on many boards, which switches you want to install.

That is where this gets interesting.

1. Mechanical Keyboards Simply Feel Better to Type On

This is subjective.

It is also the reason most people become interested in mechanical keyboards in the first place.

A decent mechanical switch gives you a more deliberate keypress than the mushy rubber-dome keyboards that still fill offices and computer bundles.

You can choose a smooth linear switch, a tactile switch with a noticeable bump, or a deliberately clicky switch.

Once you find one you like, typing can feel considerably more satisfying.

That matters if you spend a large part of your day:

writing;
coding;
working in spreadsheets;
answering email;
editing;
or doing almost anything else at a computer.

You are pressing these keys thousands of times.

It seems reasonable to care how they feel.

2. Mechanical Keyboards Are No Longer Expensive

This is probably the biggest change.

Mechanical keyboards used to be something you either found attached to an old computer or paid enthusiast prices to own.

That world is gone.

You can now buy surprisingly capable mechanical keyboards for the price of an ordinary mainstream wireless keyboard.

I have been particularly impressed by the Keychron C3 Pro as a budget model.

I originally bought one because it was inexpensive enough to experiment with. It turned out to be a perfectly good everyday mechanical keyboard with features that would once have belonged on much more expensive boards.

There are now budget mechanical keyboards with:

hot-swappable switches;
programmable firmware;
RGB lighting;
better internal sound dampening;
PBT keycaps;
wireless connectivity;
and surprisingly solid cases.

The price barrier has largely disappeared.

3. You Don’t Have to Buy a Loud Keyboard

Mention mechanical keyboards and some people immediately imagine an office filled with:

CLICK CLICK CLICK CLICK CLICK.

That keyboard exists.

You do not have to buy it.

There are linear switches that are relatively quiet, tactile switches without a loud click mechanism, and dedicated silent switches designed specifically to reduce noise.

You can also change:

switches;
keycaps;
case foam;
stabilizers;
and other parts that influence the sound.

I have experimented with deliberately quiet builds, and it is entirely possible to make a mechanical keyboard that is appropriate for an office or shared room.

If noise matters to you, see my guide to building a silent mechanical keyboard on a budget.

4. You Can Choose the Switch You Actually Like

This is where newcomers encounter the bizarre rainbow vocabulary of mechanical keyboards.

Red.

Brown.

Blue.

Banana.

Yellow.

Mint.

Jade.

And seemingly another dozen switch names every time I look.

You do not need to understand all of them.

Start with three broad categories.

Linear Switches

These move smoothly through the keypress without a pronounced tactile bump.

They are popular with gamers and with people who simply prefer a smooth feel.

Tactile Switches

These provide a noticeable bump during the press.

I tend to like tactile switches because the feedback makes the keyboard feel more deliberate without requiring a loud click.

Clicky Switches

These deliberately produce audible feedback along with the tactile response.

Some people love them.

Your coworkers may have their own opinion.

The important part is choice.

You are no longer stuck with whatever keyboard feel a computer manufacturer selected for millions of customers.

5. Hot-Swap Keyboards Let You Change Your Mind

This may be my favorite mechanical-keyboard development.

Many current boards are hot-swappable.

That means the switches are not permanently soldered to the circuit board.

You can pull one out and install another compatible switch.

No soldering iron required.

Buy a keyboard with switches that turn out to be too loud?

Change them.

Want something more tactile?

Change them.

One switch eventually fails?

Replace that switch instead of throwing away the entire keyboard.

It also makes the hobby considerably less intimidating because your first switch choice does not have to be permanent.

6. You Can Reprogram the Keyboard Itself

This is a feature I now actively look for.

Many mechanical keyboards support firmware such as QMK and configuration tools such as VIA or manufacturer interfaces built around QMK.

The point is simple:

You can decide what the keys do.

Have a Scroll Lock key you have not intentionally pressed since 1998?

Turn it into Mute.

Want Caps Lock to become Control?

Do it.

Want a key to trigger a macro?

Possible.

Keyboards can use programmable layers to make keys perform different functions when another key is held. This is even more important on smaller keyboards with fewer keys.

And because the configuration can be stored on the keyboard itself, your layout can follow the keyboard between computers.

I wrote more about this in my guide to reprogramming keyboards with QMK and VIA.

7. You Don’t Need a Huge Keyboard

Another thing mechanical keyboards have done well is force people to reconsider how many keys they actually need.

The familiar full-size keyboard has:

a function row;
navigation cluster;
arrow keys;
number pad;
and enough unused real estate to occupy a substantial part of a desk.

If you use all of that, wonderful.

Keep it.

If you do not, there are other sizes.

Keyboard Size	What You Get	Who It Makes Sense For
Full size	Everything, including number pad	Heavy number-pad users
TKL	Full keyboard minus number pad	Great general-purpose desktop layout
75%	Function row and arrows in a tighter layout	Excellent balance of compactness and usability
65%	Arrows but usually no function row	People who want something smaller
60%	Very compact, with more functions on layers	Users comfortable with shortcuts
40%	Minimal physical keys and extensive layers	Keyboard enthusiasts and people who enjoy explaining their keyboard

I tend to think 75% is an especially good format.

You retain the function row and arrow keys without giving up nearly as much desk space to the keyboard.

8. Low-Profile Mechanical Keyboards Solve the Height Problem

Traditional mechanical keyboards can be tall.

If you are coming from a laptop keyboard, that can initially feel strange.

Low-profile mechanical keyboards reduce the height while keeping individual mechanical switches.

This has also made mechanical keyboards much more practical for travel.

The Keychron K3 QMK is a good example. It is a compact 75% low-profile mechanical keyboard with wireless connectivity and programmable firmware.

It has also become one of the keyboard products readers of this site are actually buying. Low profile keyboards are slim enough to pack as an accessory if you still want to be mobile.

Check the Keychron K3 QMK on Amazon

If portability is your main concern, see my full guide to the best travel keyboards.

9. Mechanical Keyboards Are Repairable and Upgradeable

This is a quality I appreciate more as consumer electronics become increasingly disposable.

On the right mechanical keyboard, you can replace:

a bad switch;
a damaged keycap;
stabilizers;
the USB cable;
and sometimes considerably more.

You can also upgrade pieces simply because you want to.

Maybe you want different keycaps.

Maybe you want quieter switches.

Maybe you decide you prefer tactile switches after six months with linear ones.

A good hot-swap mechanical keyboard gives you options that a sealed cheap keyboard simply does not.

10. Keycaps Let You Make the Keyboard Yours

Keycaps are the part of the keyboard your fingers actually touch.

They can change:

appearance;
texture;
legends;
profile;
and even how the keyboard sounds.

This can be purely decorative.

It can also be functional.

They come in different shapes depending on your preferences. Some prefer spherical tops, some cylindrical, and other considerations.

If you remap Scroll Lock to Mute, for example, put a Mute keycap there.

If you have an unusual keyboard layout, custom keycaps can solve labeling problems that mass-produced sets do not.

I have experimented with custom sets extensively; see my Yuzu custom keycaps review for one approach.

You Can Start Cheap

If you have never used a mechanical keyboard, I would not recommend beginning with a $300 enthusiast board.

Start with something inexpensive and competent.

The Keychron C3 Pro is exactly the sort of keyboard that demonstrates how far the budget market has come.

The current C3 family includes hot-swappable options and QMK/VIA support while remaining firmly in budget-keyboard territory.

If you discover that you do not care about any of this, fine.

You learned that without spending much money.

If you discover that you do care, you have unfortunately entered a hobby with a nearly unlimited number of things to buy.

I apologize in advance.

Mechanical Keyboards Can Be Wireless Too

The image of a mechanical keyboard as a heavy wired gaming board is badly out of date.

There are mechanical keyboards with:

Bluetooth;
2.4GHz wireless;
USB-C wired operation;
or combinations of all three.

Wireless matters especially if you switch among:

a desktop;
laptop;
tablet;
or multiple computers.

The K3 QMK is an example of the modern version of this idea: compact, low-profile and wireless while still giving you a mechanical typing experience.

What About Gaming?

Mechanical keyboards are heavily marketed toward gamers, but gaming is not why I think most people should consider one.

Features such as high polling rates, rapid-trigger magnetic switches and extremely low latency can matter to competitive players, but even for those individuals, they are somewhat of buzzwords.

For ordinary computer use, those aren’t the reasons I would switch.

I care more about:

typing feel;
layout;
programmability;
repairability;
and being able to choose the keyboard I actually enjoy using.

If you also game, great.

Do Mechanical Keyboards Make You Type Faster?

Do not expect to buy a mechanical keyboard on Monday and become a dramatically faster typist by Tuesday.

Your typing speed depends far more on your own skill and familiarity.

The benefit is that you can choose a keyboard that feels comfortable and predictable to you.

If that makes you enjoy typing more or reduces the number of irritating accidental presses, excellent.

I would buy the keyboard for the experience rather than for promises of magical productivity.

Are Mechanical Keyboards Better for Ergonomics?

Keyboard ergonomics is much broader than the switch mechanism.

Keyboard height, angle, wrist position, layout, desk height and how you use the keyboard all matter.

A mechanical switch by itself does not make a keyboard ergonomic.

But the mechanical-keyboard market gives you an enormous range of physical designs:

low-profile;
split;
ortholinear;
compact;
tentable;
and conventional layouts.

That gives you more opportunities to find a configuration that suits the way you work.

Who Should Not Buy a Mechanical Keyboard?

I would not tell everyone to buy one.

Skip it if:

you already genuinely love the keyboard you use;
you need the absolute thinnest and lightest possible travel setup;
you strongly prefer laptop-style scissor switches;
you do not type enough for the keyboard to matter;
or you know you will become obsessed with switches and keycaps and would prefer to preserve your disposable income.

That last risk is real.

What Mechanical Keyboard Should a Beginner Buy?

I would keep the first purchase simple.

If You Want a Cheap Desktop Keyboard

Start with a budget TKL mechanical keyboard such as the Keychron C3 Pro.

It gives you a familiar layout and lets you find out whether you actually like mechanical switches before going deeper.

Read my Keychron C3 Pro review.

If You Want Wireless and Low Profile

The Keychron K3 QMK is the more interesting choice if you want something closer to laptop height without giving up mechanical switches.

Its 75% layout is also compact enough for travel without becoming an exercise in remembering where every missing key went.

See the Keychron K3 QMK on Amazon

If You Want to Experiment

Buy something hot-swappable.

Then you can try different switches without replacing the board.

That is the easiest way to find out whether you prefer linear, tactile or quieter switches.

A Beginner’s Mechanical Keyboard Checklist

Before buying, decide:

What size do I want? Full-size, TKL, 75%, 65% or smaller?
Do I need a number pad?
Do I want wired or wireless?
Do I want a normal-height or low-profile keyboard?
Linear, tactile or clicky switches?
Is hot-swap important?
Do I want QMK/VIA or other programmable firmware?
How much noise can the people around me tolerate?

Answer those questions and the bewildering keyboard market becomes much easier to navigate.

Frequently Asked Questions

Why should I buy a mechanical keyboard?

The main reasons are typing feel, choice of switches, better customization, repairability and the enormous variety of sizes and layouts now available. Mechanical keyboards have also become inexpensive enough that trying one no longer requires a large investment.

Are mechanical keyboards really better?

They are better for people who value the characteristics they offer. Someone who loves a thin laptop keyboard may prefer that style. The advantage of mechanical keyboards is that you get far more choice over how the keyboard feels and behaves.

Are mechanical keyboards too loud for an office?

They do not have to be. Avoid clicky switches if noise is a concern. Quiet linear, tactile and dedicated silent switches can produce a much more office-friendly keyboard.

How much should I spend on my first mechanical keyboard?

You do not need to spend hundreds of dollars. There are good budget options under $100, and some surprisingly capable models cost considerably less.

What is a hot-swappable mechanical keyboard?

A hot-swappable keyboard lets you remove and replace compatible switches without soldering. It makes repairs and experimentation much easier.

What is QMK?

QMK is open-source keyboard firmware that allows extensive customization of supported keyboards. Depending on the board and configuration, you can remap keys, create layers, add macros and change how individual keys behave.

Are mechanical keyboards good for work?

Yes. Mechanical keyboards are useful far beyond gaming. Writers, programmers and other heavy computer users can benefit from having more control over typing feel, layout and key behavior.

What is the best mechanical keyboard size?

There is no universal answer. TKL is an easy transition from a full-size keyboard if you do not need a number pad. A 75% board is a good compact compromise because it usually retains the function row and arrow keys.

Are low-profile mechanical keyboards worth it?

They can be particularly attractive for laptop users and travelers because they reduce the height and bulk associated with traditional mechanical keyboards while retaining individual mechanical switches.

You Spend Too Much Time Typing on a Bad Keyboard

That is ultimately my argument.

A keyboard is not an obscure computer component buried inside a case.

Your hands are on it all day.

Mechanical keyboards used to require enough money or enthusiasm that most people could reasonably ignore them.

They don’t anymore.

You can buy a competent one inexpensively. You can make it quiet. You can buy it wireless. You can get a low-profile model. You can change the switches. You can reprogram the keys. You can choose almost any size imaginable.

If you spend hours every day typing and have never tried a decent mechanical keyboard, I think you should.

Start inexpensively.

Find out what kind of switches you like.

Then try very hard not to discover custom keycaps.

That is where things start getting expensive.

Published on September 6, 2026

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Smoke Detector Failed the Test? How to Tell If the Battery or Alarm Is Bad

You press the TEST button on your smoke detector.

Nothing happens.

Or perhaps it makes a weak noise that sounds nothing like the ear-piercing alarm you expected.

Do not ignore that.

A smoke alarm that does not respond normally when tested needs to be investigated immediately.

The problem might be simple:

a dead battery;
a battery installed incorrectly;
a battery activation tab that was never removed;
or a hardwired alarm that is not receiving power.

But there is another common possibility:

The smoke detector itself may be finished.

Smoke alarms do not last forever. The U.S. Fire Administration recommends replacing smoke alarms 10 years from their manufacture date, and manufacturers similarly warn that a unit that still fails its test after basic troubleshooting may need replacement. It is why you should write the install date on the detector itself.

Here is how I would figure out which problem you have.

Quick Answer: What Should You Do If a Smoke Detector Fails the Test?

Make sure you are using the test button correctly. Some alarms require you to hold it for several seconds.
If the alarm has a replaceable battery, install a fresh battery in the correct orientation.
Test it again.
If it is hardwired, confirm that the unit is properly connected and receiving power according to the manufacturer’s instructions.
Check the manufacture date on the back of the alarm.
If the alarm is around 10 years old—or still will not sound after correcting the battery or power problem—replace the alarm.

If there is actual smoke, a burning smell or any reason to believe there may be a fire, do not spend time troubleshooting the detector. Get everyone out and treat it as an emergency.

First: Make Sure You Are Actually Testing It Correctly

The TEST button is the manufacturer’s built-in functional test.

Depending on the model, you may need to hold the button for several seconds before the alarm sounds.

Kidde, for example, instructs users of many smoke alarms to hold the test button for at least five seconds.

A normal test should produce a loud alarm pattern.

If your alarms are interconnected, the test may also cause the other connected alarms in the house to sound.

If you pushed the button very briefly and nothing happened, try again using the procedure in the manual for your specific model.

If it still remains silent or sounds weak, continue troubleshooting.

A Status Light Does Not Prove the Alarm Is Working

This is an easy mistake to make with a hardwired alarm.

You see a green power light and assume everything is fine.

Not necessarily.

The light can tell you that the unit is receiving power. It does not replace a functional test of the alarm.

Kidde specifically warns that the status indicator alone does not prove the alarm is working and recommends using the test button.

If the light is on but the alarm will not respond normally to the TEST button, investigate the problem rather than trusting the light.

If the Smoke Detector Has a Replaceable Battery

This is the easiest version to troubleshoot.

1. Check the Battery Orientation

Remove the battery and make sure the positive and negative terminals are installed exactly as indicated inside the battery compartment.

This sounds embarrassingly obvious.

It is still worth checking.

Some alarms also have battery-retaining tabs or mechanisms that prevent the compartment from closing correctly when the battery is not seated properly.

2. Install a Known Fresh Battery

If there is any question about the battery, replace it with a fresh battery of the type specified by the alarm manufacturer.

Then test the alarm again.

If the alarm now sounds normally, the old battery was probably the problem.

3. Test the Removed Battery Separately

If you want to know whether the old battery was actually dead, a simple household battery tester is useful.

I like this better than trying to infer battery condition from how long the battery has been installed.

The Gardner Bender GBT-500A is a simple analog tester that handles common household batteries from 1.5V through 22.5V, including:

AAA;
AA;
C;
D;
9V rectangular batteries;
button cells;
3V lithium cells;
and several less common battery types.

It has dedicated contacts for quick 9V testing and a simple color-coded Good/Replace scale rather than requiring you to interpret a raw voltage reading.

Check the Gardner Bender GBT-500A battery tester on Amazon

A battery tester is useful for the drawer full of AA, AAA and 9V batteries that somehow accumulates in every house too.

But for smoke-alarm safety, I would not try to squeeze another few months out of a questionable inexpensive battery.

If you are unsure, replace it.

What If a Fresh Battery Does Not Fix It?

This is the important fork in the road.

If you install a fresh battery correctly and the smoke alarm still will not make a proper test sound, the problem may be the alarm rather than the battery.

Before replacing it, check:

whether the battery contacts appear damaged or corroded;
whether the battery compartment is closing completely;
whether the alarm requires a reset procedure;
and how old the alarm is.

Follow the troubleshooting procedure in the manual for your exact model.

If the unit still does not test correctly, replace it.

A smoke detector is not an appliance I would keep using while hoping it sorts itself out.

Check the Manufacture Date

Remove the alarm from its mounting plate far enough to read the label on the back.

You are looking for the manufacture date, not the date when you happened to move into the house.

The U.S. Fire Administration recommends replacing smoke alarms 10 years from the manufacture date.

So if the back of your detector says:

Manufactured: September 2016

and you are reading this in September 2026, I would not spend much time trying to revive it.

It has reached the end of the normal replacement interval.

Replace the alarm.

What If You Don’t Know How Old the Detector Is?

Check the label.

If there is no readable manufacture date and you cannot determine the age of the alarm, that is another reason to consider replacement—particularly if the unit is already failing a functional test.

A smoke alarm that came with the house may be much older than it looks from the outside.

What If It Has a Sealed 10-Year Battery?

Do not go hunting for a battery door that does not exist.

Many current smoke detectors have a sealed lithium battery intended to remain inside the alarm for its service life. In fact, in some places they no longer permit the older replaceable ones.

You cannot take that internal battery out and put it on the Gardner Bender tester.

You test the alarm itself.

If a sealed-battery alarm:

fails its test;
is giving an end-of-life warning;
or has reached the end of its specified service life;

the normal solution is replacement of the entire alarm.

This is also why changing the battery does not solve every chirping problem.

If that is the problem you are having, see our guide to why a smoke detector keeps chirping even after you replace the battery.

What If the Smoke Detector Is Hardwired?

A hardwired detector adds another layer because it can receive AC power from the house while also having some form of backup battery.

If the alarm will not test:

check the power indicator;
make sure the alarm’s wiring connector is fully seated if the manufacturer instructs you to inspect it;
check whether other alarms on the interconnected system are operating;
and follow the testing procedure for the exact model.

Some hardwired alarms have a conventional replaceable backup battery.

Others have a sealed backup battery.

Do not assume every hardwired alarm has a removable 9V battery hidden somewhere inside.

Does Pressing TEST Prove the Backup Battery Works?

Be careful here.

The test button is the correct functional test for the alarm, but the exact procedure matters when you specifically want to verify a hardwired alarm’s backup battery.

Some manufacturers instruct users of particular hardwired models with replaceable backup batteries to disconnect the alarm from AC power and test it while operating on battery before reinstalling it.

Follow the instructions for your exact model.

Do not alter household electrical wiring or improvise your own test procedure.

If you are unsure how a hardwired alarm should be tested or connected, consult the manufacturer or a qualified electrician.

What If the Alarm Makes a Weak Sound?

A weak, abnormal or intermittent test sound should not be treated as a pass.

Try a fresh replaceable battery if the unit uses one.

Then test again.

If the sound remains abnormal, check the alarm’s age and manufacturer troubleshooting instructions.

If the unit is old or still cannot produce its normal test alarm, replace it.

What If the Test Works but the Alarm Keeps Chirping?

A successful test and a chirping alarm can occur at the same time.

Chirping can indicate:

a low battery;
an incorrectly installed battery;
a power interruption;
a reset issue;
or an end-of-life warning.

With sealed 10-year alarms, an end-of-life chirp can mean that the entire detector needs replacement.

See our smoke-detector chirping troubleshooting guide if that is your problem.

What If the Test Button Works but the Detector Is 10 Years Old?

Replace it.

This is another common misconception.

A successful button test does not make an old smoke alarm immortal.

The U.S. Fire Administration recommends replacing smoke alarms every 10 years.

The test button tells you that the alarm can complete its built-in test at that moment.

It does not cancel the recommended service-life limit. Beyond that, do you really want to take the risk?

When I Would Stop Troubleshooting and Replace the Alarm

I would replace the detector if:

it is approximately 10 years old;
it still fails the test after installing a fresh battery correctly;
it has a sealed battery and is giving an end-of-life warning;
it produces an abnormal test sound after basic troubleshooting;
it is physically damaged;
or the manufacturer says its service life has ended.

If you have reached that point, see our current guide to the best smoke and carbon monoxide detectors.

There are now meaningful choices between:

hardwired and battery-only alarms;
replaceable and sealed batteries;
smoke-only and combination smoke/CO detectors;
voice alerts;
interconnected systems;
and smart alarms.

You do not necessarily need the most expensive detector.

You do need one you can trust.

Battery Bad or Smoke Detector Bad? A Quick Decision Table

What Happens	What I Would Check
No sound when TEST is pressed	Testing procedure, battery installation, power, age of alarm
Works after installing a fresh battery	Old battery was likely the problem
Still silent with a fresh battery	Alarm failure or other fault; follow manufacturer guidance and replace if unresolved
Green light is on but no test sound	Do not rely on the power light; troubleshoot the alarm
Sealed 10-year alarm fails test	Check age and manufacturer instructions; replacement may be required
New battery but still chirping	Reset procedure, age and end-of-life warning
Alarm is 10 years old	Replace the alarm
Several alarms fail or chirp together	Check their manufacture dates and interconnected system

Do Not Test a Smoke Alarm With an Open Flame

Do not hold a match, lighter or candle under a smoke detector to see whether it works.

Kidde specifically warns against testing a smoke alarm with an open flame because you can damage the alarm or start a fire.

Use the manufacturer’s test button and any other testing method specifically recommended for your model.

How Often Should You Test Smoke Alarms?

The U.S. Fire Administration recommends testing smoke alarms at least once a month using the test button.

That includes:

battery-operated alarms;
hardwired alarms;
and sealed long-life alarms.

You should also pay attention after:

changing a battery;
a power outage;
removing and reinstalling an alarm;
or any situation that gives you reason to question whether it is operating normally.

Frequently Asked Questions

Why doesn’t my smoke detector beep when I press the test button?

The battery may be dead or installed incorrectly, the alarm may not be receiving power, you may need to hold the test button longer, or the detector itself may have failed. Check the manufacturer’s instructions, install a fresh battery if applicable and check the age of the alarm.

What if I put in a new battery and the smoke detector still doesn’t work?

Confirm the battery is installed correctly and follow the manufacturer’s troubleshooting procedure. If the alarm still will not test normally, particularly if it is approaching 10 years old, replace it.

Can I test a smoke detector battery with a battery tester?

You can test a removable 9V, AA, AAA or other compatible battery separately with a battery tester. That does not replace testing the smoke alarm itself with its TEST button.

What battery tester can I use for a 9V smoke-detector battery?

The Gardner Bender GBT-500A has dedicated contacts for 9V batteries and also tests many other common household battery sizes.

Does a green light mean my hardwired smoke detector works?

No. The light can indicate that the alarm is receiving power, but you should still perform the manufacturer’s functional test using the TEST button.

Should I replace a smoke detector that still works after 10 years?

Yes. The U.S. Fire Administration recommends replacing smoke alarms 10 years after their manufacture date.

Can you replace the battery in a 10-year sealed smoke detector?

Normally no. The battery is designed to remain sealed inside the alarm. When the alarm reaches the end of its service life or fails, the entire alarm is replaced.

Why does my smoke detector still chirp after I put in a new battery?

The problem may be a reset issue, power problem or end-of-life warning rather than a low replaceable battery. Older and sealed-battery alarms frequently need the entire detector replaced once they reach end of life.

A Failed Smoke-Alarm Test Needs an Answer

If you press TEST and nothing happens, don’t shrug and walk away.

First determine whether the problem is the battery.

Install a fresh battery if the alarm uses one.

If you are curious about the removed battery, a simple battery tester can tell you whether it still has useful charge.

Then test the alarm again.

If it still does not work, check its age and the manufacturer’s troubleshooting instructions.

If the alarm is around 10 years old or still fails its functional test, replace it.

A dead battery costs a few dollars.

A failed smoke detector is not something worth gambling on.

If you are starting one step earlier, see our guide to how to test a smoke detector battery correctly. If your alarm is chirping rather than failing silently, see why a smoke detector can keep chirping after a new battery.

Published on September 6, 2026

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Best 2.5GbE Switches for a Home Network and NAS in 2026

For years, Gigabit Ethernet was fast enough that most people never had to think about the network switch sitting in a closet.

That is changing.

2.5GbE ports are now showing up on NAS devices, desktop motherboards, mini PCs, Wi-Fi access points and routers. If you have bought relatively recent networking or home-lab hardware, there is a decent chance you already own equipment capable of running faster than 1Gbps.

The switch in the middle may be the thing holding everything back.

For many home networks, 2.5GbE is now the sensible upgrade. It can run over existing Cat5e cabling in many installations, is substantially cheaper and easier to deploy than an all-10GbE network, and is fast enough to make a noticeable difference when moving large files to and from a NAS. There are very few places within a home where you might need 10GbE right now.

I would not overcomplicate the switch purchase.

For most homes, I would choose among three basic configurations:

Five 2.5GbE ports: inexpensive and enough for a small multi-gig network.
Eight 2.5GbE ports: better if you know five ports will disappear quickly.
2.5GbE ports plus a 10GbE uplink: the more interesting architecture if your NAS or network backbone can run at 10Gbps.

My 2.5GbE Switch Picks

Switch	Ports	Best For
TP-Link TL-SG105S-M2	5 × 2.5GbE	Small, simple 2.5G upgrade
TP-Link TL-SG108S-M2	8 × 2.5GbE	Larger home networks
TRENDnet TEG-S5061	5 × 2.5GbE + 1 × 10G SFP+	2.5G clients with a 10G NAS or backbone

All three are unmanaged and fanless. If you simply want faster Ethernet without configuring VLANs, management interfaces or enterprise networking features, that is a feature rather than a deficiency.

Best Simple 2.5GbE Switch: TP-Link TL-SG105S-M2

If you only need a few multi-gigabit connections, I would start with the TP-Link TL-SG105S-M2.

It provides five RJ-45 Ethernet ports, each capable of negotiating at:

100Mbps;
1Gbps;
or 2.5Gbps.

TP-Link rates the switch for 25Gbps of switching capacity, which is enough to run all five 2.5GbE ports at full duplex without deliberately creating an internal switch bottleneck.

It is also fanless.

That is something I care about for home networking hardware. A switch that sits in an office, bedroom, basement rack or networking closet should not add another tiny fan that eventually becomes the loudest thing in the room.

Check the TP-Link TL-SG105S-M2 on Amazon

I would buy this one if: you have a 2.5GbE NAS, desktop and router and simply need to connect them without rebuilding the entire network.

The Problem With Five Ports

Five ports sounds like plenty until you start using them.

Imagine:

one port to the router;
one to the NAS;
one to your desktop;
one to a Wi-Fi access point;
one to a second desktop or server.

You are done.

If you are already wondering what will occupy port six, buy the eight-port model instead.

Best 8-Port 2.5GbE Switch: TP-Link TL-SG108S-M2

The TP-Link TL-SG108S-M2 follows the same basic idea but gives you eight 2.5GbE RJ-45 ports.

TP-Link specifies:

8 × 100Mbps/1Gbps/2.5Gbps Ethernet ports;
40Gbps switching capacity;
fanless operation;
support for jumbo frames;
and a compact unmanaged design.

Check the TP-Link TL-SG108S-M2 on Amazon

This is probably the better default purchase if the price difference from the five-port version is reasonable.

Network ports have a tendency to get used.

An eight-port switch gives you room for:

a router;
NAS;
two desktops;
home server;
Wi-Fi access point;
mini PC;
and another switch or device;

without immediately reaching for another switch.

I would buy this one if: you want a straightforward 2.5GbE network and expect to connect more than three or four multi-gig devices.

Best 2.5GbE Switch With a 10G Uplink: TRENDnet TEG-S5061

The TRENDnet TEG-S5061 is the most interesting of these three switches.

It has:

5 × 2.5GBASE-T RJ-45 ports;
1 × 10G SFP+ port;
45Gbps switching capacity;
fanless operation;
and support for Cat5e or better cabling on the 2.5GbE ports.

Check the TRENDnet TEG-S5061 on Amazon

The 10G SFP+ port changes what you can do with it.

You can run ordinary computers and other devices at 2.5Gbps while giving the switch a much faster connection to:

a 10GbE NAS;
a larger core switch;
a server;
or another part of the network.

This hybrid approach makes a lot of sense to me.

Why Have a 10G Port on a 2.5G Switch?

Suppose you have four computers connected at 2.5Gbps and all of them access the same NAS.

If the NAS is also connected at 2.5Gbps, those computers are all sharing one 2.5Gbps path to the storage.

The NAS connection becomes the bottleneck.

Give the NAS a 10Gbps connection instead, and several 2.5GbE clients can transfer data simultaneously without immediately saturating that single upstream link.

This is one of the reasons I like a mixed network:

2.5GbE where it is cheap and convenient, 10GbE where aggregated traffic actually justifies it.

You do not need a 10GbE port on every television, printer and desktop simply because your NAS can move data quickly.

The other place a 10GbE port can make sense is in between switches as the backbone of your home. Sometimes, spending a little more on the connections between switches, where the individual devices branch off, can have a benefit to the overall stability of the network.

Our 2.5GbE vs. 10GbE home-network guide goes into that tradeoff in more detail.

2.5GbE Is Much Faster Than Gigabit for a NAS

A 1Gbps Ethernet connection has a raw theoretical limit of 125 megabytes per second.

Real file transfers are somewhat lower after protocol overhead and other limitations.

A 2.5Gbps connection raises the raw theoretical ceiling to 312.5 megabytes per second.

That is enough to make a significant difference when:

backing up a computer;
moving video files;
working directly from NAS storage;
copying large disk images;
or transferring large collections of photos.

A modern NAS with multiple hard drives or SSD storage can often exceed Gigabit Ethernet speeds without much difficulty.

If you recently bought one of the newer 2.5GbE-equipped NAS systems, leaving it connected to a 1Gbps switch can mean you are using only part of the networking capability you paid for.

See our best NAS for home use guide if you are building the storage side of the network too.

Do You Need 10GbE Instead?

Maybe, but I would not assume so.

10GbE is wonderful when you actually have hardware capable of feeding it.

It makes sense for:

fast SSD-based storage;
large NAS arrays;
video-production workstations;
servers moving lots of data;
and network backbones carrying traffic from multiple clients.

But an all-10G network costs more.

10GbE equipment can also consume more power and generate more heat, and some 10G switches require fans.

For a desktop that browses the web, streams video and occasionally accesses a NAS, 2.5GbE is already considerable bandwidth.

I would put 10G where it removes a real bottleneck instead of chasing a larger number on every port.

Will 2.5GbE Work Over Existing Cat5e Cable?

Often, yes.

One of the main attractions of 2.5GBASE-T is that it was designed to provide multi-gigabit networking over existing copper cabling.

Both TP-Link and TRENDnet specify Cat5e or better for 2.5GbE operation on these switches.

That makes 2.5GbE particularly attractive in a house where Cat5e is already installed inside walls.

You may be able to upgrade:

the switch;
network adapters;
and perhaps the router;

without pulling new cable through the building.

Actual performance still depends on cable quality, termination, distance and the condition of the installation.

Do You Need Cat6 for 2.5GbE?

No, not necessarily.

Cat6 is certainly fine, but properly installed Cat5e is specified for 2.5GBASE-T.

I would not replace functioning in-wall Cat5e simply because you want to move from 1Gbps to 2.5Gbps.

Try the existing wiring first. However, if you are installing new wire, you do want to go for Cat 6 at minimum. Outside of the wall, you may want to identify older cables and replace them during other work.

What About 5GbE?

5GbE exists and can be useful, but the home-networking market has largely made 2.5GbE the more common inexpensive step above Gigabit.

A lot of current consumer hardware arrives with:

1GbE;
2.5GbE;
or 10GbE.

That makes a 2.5G-access/10G-backbone design particularly convenient.

Unmanaged vs. Managed 2.5GbE Switches

All three switches here are unmanaged.

You connect the cables and they switch Ethernet traffic.

There is no web management interface to configure.

For many homes, that is exactly what I want.

A managed switch becomes worthwhile if you need features such as:

VLANs;
more detailed traffic control;
link aggregation;
port monitoring;
more sophisticated QoS;
or a managed home-lab environment.

If none of those phrases describes something you were already planning to use, I would hesitate to pay extra simply because “managed” sounds more capable.

Do You Need PoE?

None of these three switches is a PoE switch.

That is perfectly fine for:

desktops;
NAS devices;
servers;
routers;
and other equipment with its own power supply.

PoE becomes important when the Ethernet cable also needs to power something such as:

a Wi-Fi access point;
security camera;
VoIP phone;
or another powered network device.

If you plan to deploy several Wi-Fi 6E or Wi-Fi 7 access points with 2.5GbE interfaces, a 2.5GbE PoE switch may be a better purchase than one of the switches on this list. Depending on what you are powering with it, you may wire a section of your network with less expensive Gigabit POE. For example, security cameras are commonly powered by POE, but rarely support more than gigabit ethernet. I have a newer access point that does have a 2.5GbE port, but older ones did not. Consider the benefits here as well. You have to assess what is best for your needs.

You can also use a separate PoE injector for an occasional device, closer to the end of the drop.

Fanless Matters More Than It Sounds

All three of these switches are fanless.

I strongly prefer that in a home environment when the hardware can operate reliably without active cooling.

A switch may stay powered on for years.

A small inexpensive fan can:

collect dust;
develop bearing noise;
become annoying in a quiet room;
and eventually fail.

A silent switch in the networking closet is easy to forget about.

Networking hardware should aspire to being forgotten.

What About Jumbo Frames?

Jumbo frames can reduce packet-processing overhead in some high-speed LAN workloads, particularly large sequential transfers to a NAS.

They are not required to get useful 2.5GbE performance.

If you decide to use jumbo frames, configure the network carefully. Every relevant device along the path needs compatible settings.

I would much rather have a stable network using standard Ethernet frames than spend an afternoon debugging one device that does not agree with everyone else’s MTU.

How I Would Build a Small 2.5GbE Home Network

For a simple setup:

2.5GbE router;
TP-Link TL-SG105S-M2;
2.5GbE NAS;
2.5GbE desktop;
2.5GbE access point;
and one spare port.

That gives you a substantial improvement over Gigabit Ethernet without turning networking into a hobby.

How I Would Build a Larger 2.5GbE Home Network

Once you have multiple wired rooms or several computers:

2.5GbE router;
TP-Link TL-SG108S-M2;
NAS;
multiple desktops;
server;
access point;
and spare capacity.

The eight-port switch simply gives you more breathing room.

How I Would Build a 2.5G Network Around a 10G NAS

This is where the TRENDnet becomes attractive.

I would connect:

ordinary workstations to the five 2.5GbE ports;
the NAS or core network through the 10G SFP+ port;
and allow multiple 2.5G clients to share the faster upstream connection.

The SFP+ port requires an appropriate SFP+ connection, such as a compatible DAC cable or transceiver setup.

For a rack, server or NAS that already has SFP+, this can be a very economical architecture.

Which 2.5GbE Switch Should You Buy?

Buy the TP-Link TL-SG105S-M2 if:

you need only a handful of 2.5G ports;
you want something simple;
your NAS is 2.5GbE;
and you do not need a 10G backbone.

See the TP-Link TL-SG105S-M2 on Amazon

Buy the TP-Link TL-SG108S-M2 if:

five ports already sounds limiting;
you have several wired rooms or computers;
you want eight 2.5GbE ports without management complexity;
and you do not need 10GbE on this switch.

See the TP-Link TL-SG108S-M2 on Amazon

Buy the TRENDnet TEG-S5061 if:

your clients mostly use 2.5GbE;
your NAS, server or backbone can use 10GbE;
you want to avoid bottlenecking several 2.5G clients behind a single 2.5G uplink;
and an SFP+ connection fits your network.

See the TRENDnet TEG-S5061 on Amazon

Frequently Asked Questions

Is a 2.5GbE switch worth it?

If you have multiple devices with 2.5GbE ports—especially a NAS and desktop—the upgrade can be very worthwhile. The theoretical bandwidth is 2.5 times that of Gigabit Ethernet, while 2.5GBASE-T can often use existing Cat5e cabling.

Will a Gigabit device work on a 2.5GbE switch?

Yes. These switches auto-negotiate with slower Ethernet devices. A Gigabit device will simply connect at 1Gbps.

Will 2.5GbE work with Cat5e?

Yes. 2.5GBASE-T was designed to operate over Cat5e cabling. Poor terminations, damaged cable or unusual installations can still cause problems.

Do I need a 2.5GbE router too?

Not necessarily for local transfers. A desktop and NAS connected to the same 2.5GbE switch can communicate at 2.5GbE even if your internet connection or router is slower. A multi-gig router becomes important if you also want internet traffic above 1Gbps. If you are buying a new router for other reasons, you may want to future proof it.

Can a 2.5GbE switch make my internet faster?

Only if some other part of the network was limiting your internet connection. If you have 500Mbps internet service, replacing a Gigabit switch with a 2.5GbE switch will not turn it into 2.5Gbps service.

Is 2.5GbE fast enough for a NAS?

For many home users, yes. It provides a raw theoretical bandwidth of 312.5 MB/s, substantially above Gigabit Ethernet. High-performance NAS systems, SSD arrays and multiple simultaneous users can justify 10GbE.

Why would I want a 10G SFP+ uplink?

A 10G uplink lets several 2.5GbE clients share a faster connection to a NAS, server or core switch. It can prevent one 2.5G uplink from becoming the choke point for the entire group.

Do I need a managed 2.5GbE switch?

Not for a basic home network. Buy managed hardware when you have a reason to use its management features, such as VLANs or more advanced traffic control.

2.5GbE Has Become the Sensible Middle Ground

Gigabit Ethernet is still perfectly adequate for an enormous number of devices.

10GbE is significantly faster and absolutely worthwhile in the right places.

But 2.5GbE occupies a useful middle ground.

It is fast enough to noticeably improve NAS transfers, increasingly common on consumer hardware and often able to use the Ethernet cable already installed in your walls.

For a small network, I would buy the five-port TP-Link.

If I expected the network to grow, I would spend a little more on the eight-port TP-Link.

And if the NAS or backbone is already capable of 10GbE, the TRENDnet TEG-S5061 is the configuration I find most interesting: cheap 2.5GbE at the edge with a faster 10GbE path where the traffic converges.

Published on September 6, 2026

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What Do You Need for 3D Printing? The Complete Setup Guide for 2026

Disclosure: As an Amazon Associate I earn from qualifying purchases. Product links may earn a commission at no additional cost to you.

Buying a 3D printer is the obvious part of getting into 3D printing. It is also only the beginning.

Once you start printing regularly, you end up needing filament, somewhere to keep it dry, a few tools, cleaning supplies, replacement nozzles and eventually a collection of parts that seemed completely unnecessary when you first opened the printer box.

I have gone through this process myself. My current workhorse is an Elegoo Centauri Carbon, my first CoreXY printer. I have generally liked the printer, although my experience installing the CANVAS upgrade and replacing a damaged cable has also made me pay much more attention to replacement parts and long-term support than I did when I bought it.

If you are buying your first printer in 2026, here is what I would buy immediately, what I would consider useful, and what I would leave on the shelf until you actually need it.

Quick Answer: What Do You Need for 3D Printing?

For a basic FDM 3D-printing setup, you need:

A 3D printer
Filament
Slicer software
A solid place to put the printer
Flush cutters or small side cutters
A way to clean the build plate
A few basic hand tools

I would also strongly consider:

A filament dryer
Dry filament storage
Digital calipers
A deburring tool
An extra build plate
A spare nozzle or hotend
Some commonly replaced parts for your specific printer

You do not need to buy ten colors of filament, six nozzle sizes, a giant tool kit and every upgrade available before printing your first Benchy. Buy colors as you need them, or maybe when there is a good sale.

1. Start With the Right 3D Printer

Desktop FDM printers have improved dramatically. Automatic bed leveling, CoreXY motion systems, enclosed chambers, cameras and high-speed printing have moved down into much less expensive machines.

For most people buying a printer now, I would seriously consider an enclosed CoreXY machine. An enclosure gives you more flexibility with materials, contains some of the mechanical parts and makes the machine feel more like an appliance than the open-frame printers many of us started with.

There are still good reasons to buy an open printer, particularly if price is the priority and you expect to print almost entirely PLA and PETG. But the price gap has become surprisingly small.

Some Current 3D Printers I Would Compare in 2026

Printer	Why I Would Consider It	Main Tradeoff
Elegoo Centauri Carbon 2 Combo	Very aggressive price for an enclosed CoreXY printer with four-color CANVAS printing	Elegoo’s rapid product cycle and my own support experience make long-term OEM parts support something I would consider
Bambu Lab P2S	Polished ecosystem, enclosed design and an established multi-filament system	Costs considerably more than the Elegoo
QIDI Q2	Heated enclosed chamber, high-temperature hotend and a strong focus on more demanding materials	Smaller ecosystem than Bambu
Prusa CORE One+	Strong emphasis on repairability, upgrades and long-term ownership	Much more expensive

Elegoo Centauri Carbon 2 Combo: The Value Choice

The Elegoo Centauri Carbon 2 Combo is one of the more interesting values in the market right now.

It has a 256 × 256 × 256 mm build volume, enclosed chamber, CoreXY motion system, automatic calibration and a hardened 350°C nozzle. The Combo includes Elegoo’s CANVAS system for four-color printing.

Elegoo has recently been selling the Combo for roughly $379 to $399 depending on the promotion, which is an aggressive price for this much printer.

I own the original Centauri Carbon rather than the Carbon 2. Mine has generally been a good workhorse. I also had a frustrating experience when a damaged cable needed replacement, and previously wrote about Elegoo’s delayed CANVAS upgrade for the original Centauri Carbon.

That would not stop me from considering the newer model. It would make me think about parts availability and support alongside the feature list. To be fair, everything eventually goes out of support.

Check the Elegoo Centauri Carbon 2 Combo on Amazon

Bambu Lab P2S: The Easy Ecosystem Choice

The Bambu Lab P2S is the current successor to the P1S line and is worth comparing if you want a mature ecosystem and multi-filament printing without doing much tinkering.

The standalone printer currently starts around $549, while the P2S Combo with the AMS 2 Pro multi-filament system costs more.

I have not personally used a P2S, so I am not going to pretend this is a hands-on recommendation. On features and ecosystem, however, it belongs on a current buying list.

The Amazon listing below is for the P2S Combo with AMS 2 Pro, rather than the standalone printer.

Check the Bambu Lab P2S Combo on Amazon

QIDI Q2: Worth a Look for More Demanding Materials

The QIDI Q2 is particularly interesting if you expect to move beyond PLA and PETG.

It has a 270 × 270 × 256 mm build volume, a nozzle rated to 370°C, active chamber heating up to 65°C and a three-stage filtration system. It is also compatible with QIDI’s multi-color QIDI Box.

That combination makes it a particularly interesting choice for people who expect to experiment with more demanding materials rather than treating the enclosure mostly as a convenience.

The Amazon listing below is for the QIDI Q2 Combo, which includes the multi-color system.

Check the QIDI Q2 Combo on Amazon

Prusa CORE One+: Expensive, but Built Around Long-Term Ownership

The Prusa CORE One+ costs much more. The kit currently starts around $999, while the assembled printer is around $1,299.

Why include it?

Because Prusa takes a noticeably different approach to ownership. Parts, modifications and upgrade paths are a large part of the ecosystem. The CORE One+ is also designed to support Prusa’s INDX multi-material system.

After dealing with a damaged cable on my own printer and wondering about support for a model that was replaced unusually quickly, I understand the value of that approach better than I used to.

The cheapest printer on purchase day is not necessarily the cheapest machine to own for five years.

2. Buy Filament—but Don’t Build a Filament Warehouse Yet

Your printer is useless without filament, but this is an easy place to overspend.

I would start with two or three rolls:

PLA for most everyday printing
A second color of PLA
PETG if you want to experiment with stronger functional parts

Then add other materials when you have an actual reason to use them.

Material	Good For	Beginner?
PLA	Models, household items, organizers, prototypes and ordinary prints	Yes
PETG	Functional parts, brackets and items that need more toughness or heat resistance	Yes
TPU	Flexible feet, bumpers, cases and soft parts	After you learn the printer
ASA	Outdoor and higher-temperature applications	Requires an enclosure and appropriate ventilation
Nylon	Strong technical parts	More demanding, particularly about moisture
Carbon/glass-filled filament	Specialized functional parts	Requires the right printer setup and a hardened nozzle

PLA remains one of the easiest materials to print. PETG is also quite forgiving and is useful for functional parts. Materials such as ASA, nylon and composites introduce additional requirements.

What Filament Would I Buy First?

You do not need to match the brand of filament to the brand of your printer. For a first order, I would keep things simple rather than trying to identify the world’s greatest spool of PLA.

OVERTURE is one established option. If you already know you want a selection of colors, its Matte PLA bundle is an easy way to stock several at once.

I would not buy six kilograms of PLA merely because it comes in a bundle, however. The advice above still applies: starting with two or three rolls is enough for most people.

Check the OVERTURE Matte PLA bundle on Amazon

For functional parts, PETG is a useful second material. OVERTURE’s High-Speed PETG is intended for modern faster printers and is available in several quantities and colors.

Sponsored: OVERTURE is offering me an additional commission through Amazon Creator Connections on qualifying purchases made through the PETG link below.

Check OVERTURE High-Speed PETG on Amazon

3. A Filament Dryer Becomes More Useful Than You Expect

You can start printing PLA without immediately buying a filament dryer.

But filament absorbs moisture from the air, and some materials are far more sensitive to it than others. Wet filament can contribute to popping, stringing, rough surfaces and inconsistent extrusion.

How much this affects you depends partly on the filament and partly on where you live and store it.

If your printing area is humid, or you want to use PETG, TPU, nylon and other moisture-sensitive materials regularly, I would move a filament dryer fairly high on the accessory list.

For One Spool: SUNLU S2

The SUNLU S2 is the kind of dryer I would consider for a simple one-printer setup. It holds one standard spool, heats to as much as 70°C and can dry filament while it feeds to the printer.

Check the SUNLU S2 on Amazon

For Several Spools: SUNLU S4 Pro

If you have a multi-color setup, several printers or regularly keep multiple materials loaded, a larger dryer becomes much more interesting.

The SUNLU S4 Pro is more than simply a larger S2. It has two independently controlled drying chambers, holds four standard spools, reaches temperatures up to 85°C and includes an annealing mode aimed at engineering filaments.

That makes it considerably more capable than you need for a printer that spends its life working through one roll of PLA at a time.

I would not buy the S4 Pro just because it looks impressive. It takes up substantially more space and costs considerably more than a single-spool dryer. Buy it if you actually expect to use the capacity or its higher-temperature features.

Sponsored: SUNLU is offering me an additional commission through Amazon Creator Connections on qualifying purchases of the S4 Pro made through the link below.

Check the SUNLU S4 Pro on Amazon

4. Dry Storage Is Cheaper Than Re-Drying Everything

A filament dryer removes moisture. A dry box or sealed storage container helps prevent the filament from absorbing it again.

You do not need expensive purpose-built cabinets for ordinary PLA storage.

Airtight plastic containers or heavy reusable filament bags with desiccant can work well. Add inexpensive humidity indicators if you want to know whether your storage is actually staying dry.

I would rather spend money on decent sealed storage than repeatedly spend time and electricity drying the same spool because it was left sitting exposed on a shelf.

Browse filament storage bags and desiccant

5. Digital Calipers Are One of the Most Useful Tools You Can Buy

If you only download decorative models, you may not need calipers immediately.

Once you start designing your own parts, measuring replacement parts or trying to make two printed objects fit together, digital calipers become indispensable.

You can measure:

Screw and bolt diameters
Hole sizes
Existing parts you want to reproduce
Clearances
Wall thickness
Filament diameter
The dimensions of a failed print

A cheap pair is dramatically better than trying to design mechanical parts with a ruler.

You also do not need machinist-grade measuring equipment for ordinary 3D-printing projects. The NEIKO 01417A 6-inch digital caliper is an inexpensive plastic model that measures inside, outside and depth dimensions and switches between inches and millimeters. That is enough for most home 3D-printing work.

Check the NEIKO 01417A digital caliper on Amazon

6. Flush Cutters: Cheap and Constantly Useful

Many printers include cutters. If yours does not, buy a pair.

You will use them for trimming filament before feeding it, cutting supports and cleaning up small pieces of plastic.

They are inexpensive enough that I would keep a dedicated pair near the printer rather than constantly looking for the pair that migrated to another toolbox.

Browse flush cutters

7. Get a Deburring Tool

This is one of those tools that looks unnecessary until you use one.

A small deburring tool can clean up holes, remove sharp edges and make functional prints look much more finished.

It is particularly handy for boxes, brackets, pass-through holes and other practical parts.

Browse deburring tools

8. Keep the Build Plate Clean

A surprising number of first-layer problems are caused by the surface rather than the printer.

Finger oils, dust and old adhesive can interfere with bed adhesion.

Follow the recommendations for your particular build plate. Dish soap and water are useful for many removable plates, while isopropyl alcohol is convenient for routine cleaning on compatible surfaces.

Do not assume that one cleaning method or adhesive is correct for every plate and filament combination. Manufacturers use different surfaces, and some materials can stick too aggressively to particular plates.

Browse isopropyl alcohol

9. An Extra Build Plate Is a Convenience I Would Buy Again

You can absolutely own a printer with one build plate.

A second plate is still useful.

You can remove a finished print and put another plate into the printer immediately rather than waiting for everything to cool. You can also keep different surface types available for different prints.

Build plates are also consumable items. They eventually get scratched, damaged or worn.

Just make sure the plate you buy is designed for your exact printer dimensions and sensor system. You may also want to consider a cool plate, allowing you to print at lower bed temperatures.

For this particular accessory, I would buy a plate explicitly made for your printer rather than shop by dimensions alone.

10. You Probably Don’t Need a Box of Nozzles on Day One

Most people should start with the 0.4 mm nozzle supplied with the printer.

It is a good general-purpose size.

Once you know what you print, other sizes become useful:

0.2 mm for very fine detail
0.4 mm for general printing
0.6 mm for faster larger prints and some filled materials
0.8 mm and larger for big parts where speed matters more than fine detail

The more important purchase may be a spare nozzle or spare hotend in the size you already use.

A clogged or damaged hotend can turn a working printer into a very expensive shelf ornament while you wait for parts.

Hardened Nozzles and Abrasive Filament

Carbon fiber, glass fiber, glow-in-the-dark and some other filled filaments are abrasive.

Do not feed abrasive material through a standard soft brass nozzle indefinitely and expect it to stay the same size. Use a nozzle intended for abrasive filament.

Some current printers already include hardened nozzles. Check before buying another one.

11. Buy a Few Printer-Specific Spare Parts

This is one area where my opinion has evolved.

After dealing with a worn Centauri Carbon cable while I was in the middle of installing CANVAS, I am more inclined to keep a few inexpensive machine-specific parts around than previously.

I am not suggesting buying another printer in pieces.

I already kept spare hotends and nozzles on hand, as well as more than one build plate. But having some other parts seems to make sense as I’m currently waiting on another replacement part from Elegoo.

PTFE tubing if your printer uses it in replaceable sections
Filament cutters used by multi-color systems
Nozzle wipers
Silicone socks
Any inexpensive part known to wear regularly on your model

Before buying a printer, I would also check whether these parts are actually available.

That tells you something about what ownership may look like two years later.

12. Do You Need a Multi-Color System?

No.

Multi-color printing is fun. It is useful for signs, labels, decorative prints, board-game pieces and models where color changes would otherwise require painting or assembly.

It also adds complexity. Single-nozzle multi-color systems generally have to unload and reload filament during color changes, which can consume considerable extra filament as purge waste. Multi-nozzle and tool-changing designs can reduce that waste, but those systems still tend to cost more.

Filament-changing systems also add tubes, cutters, feeders and moving parts. If you know you want multi-color printing, buying the printer and color system as a bundle can make sense.

If you mainly want to make brackets, organizers and replacement parts, you may use it far less than you imagine.

13. What About Glue Sticks and Bed Adhesive?

Keep some available, but don’t assume every print needs glue.

Modern PEI build plates can provide excellent adhesion when they are clean and the printer is properly calibrated.

Depending on the filament and plate, glue can sometimes serve as a release layer rather than simply helping the print stick.

Use the recommendation for the combination of filament and build surface you are actually using.

Browse 3D printer bed adhesives

14. You Need Somewhere Solid to Put the Printer

High-speed printers move quickly.

Putting one on a wobbly folding table is a bad way to start.

You want a stable surface with enough room for:

The printer itself
The door or lid to open
Rear-mounted spool holders
Multi-color units
Filament dryers
Cable movement
Maintenance access

Measure the printer’s real operating footprint rather than only its outside dimensions.

A 256 mm build volume does not mean the printer occupies a 256 mm square.

15. Think About Ventilation Before You Start Printing Every Material

PLA is where I would start.

If you move into ABS, ASA and engineering materials, think about where the printer is located and how you are handling emissions.

An enclosed printer is useful, but an enclosure does not automatically mean everything produced during printing disappears.

Follow the filament and printer manufacturer’s guidance, particularly if the printer is in a bedroom, office or other occupied space.

16. The Software Can Be Free

You do not need to buy expensive software to start 3D printing.

Your slicer turns a 3D model into instructions the printer can follow. Major printer ecosystems provide free slicing software, and there are mature third-party options as well.

For designing your own objects, you can also start with free tools before paying for professional CAD software.

I would spend money on filament and tools before paying for software simply because you assume 3D printing requires it.

My Suggested Starter Shopping List

If I were buying my first printer today, this is roughly how I would approach the shopping cart.

Item	Buy Immediately?	Why
3D printer	Yes	Rather important
2-3 rolls of PLA/PETG	Yes	Enough variety to learn without hoarding filament
Flush cutters	Yes	Cheap and constantly useful
Build-plate cleaning supplies	Yes	Good first layers depend on a clean surface
Digital calipers	Yes, if you want to design parts	Essential for measuring real objects
Filament dryer	Soon	More useful as you add materials and open spools
Dry storage	Soon	Cheap way to protect filament
Deburring tool	Soon	Excellent for functional prints
Extra build plate	Optional	Convenient and eventually useful as a spare
Spare hotend/nozzle	Optional but sensible	Prevents downtime
Multi-color system	Only if you want it	Fun and useful, but adds cost, waste and complexity
Huge filament collection	No	You will discover what materials and colors you actually use

How Much Should You Budget Beyond the Printer?

You can start cheaply.

If the printer already includes basic tools, another $50 or so can buy a couple of rolls of filament and fill the most obvious gaps.

A more comfortable setup with filament, calipers, cutters, storage and a single-spool dryer can easily add another $100 to $200.

A multi-color setup with several filaments, a large dryer, spare plates and printer-specific parts can go well beyond that.

I would build the accessory collection gradually.

The tools you buy after fifty prints tend to be far more useful than the tools you imagined you needed before the first one.

What I Would Buy First

For a new setup, I would put the money into the printer, a few good rolls of filament, basic hand tools and a way to keep filament dry.

Then start printing.

You will quickly discover whether your next purchase should be a filament dryer, a 0.6 mm hardened nozzle, another build plate, a multi-color system or simply another roll of black PLA because somehow you have used all of it again.

The printer is what gets you into 3D printing. The collection of small tools, spare parts and materials that grows around it is what turns it into something you can use whenever you need it.

More 3D Printing on Gadget Wisdom

Published on August 30, 2026

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How to Test a Smoke Detector Battery: 5 Ways to Know If It’s Still Good

If you want to know whether a smoke detector battery is still good, the most useful test is surprisingly simple: press the alarm’s test button.

That tests more than the battery. It verifies that the battery has enough power to operate the alarm’s electronics and horn.

But smoke alarms have become more complicated. Some use replaceable 9-volt or AA batteries. Others are hardwired with backup batteries. Many newer alarms contain sealed 10-year batteries that cannot be removed at all.

So how you test the battery depends on what kind of smoke detector you have.

Quick Answer: How Do You Test a Smoke Detector Battery?

Press and hold the test button. A strong alarm sound is the most important basic test.
If the battery is removable, inspect and replace it if its age is uncertain.
Use a battery tester if you want to test a removable battery separately.
For a hardwired alarm, make sure the backup battery works rather than relying only on AC power.
For a sealed 10-year alarm, test the alarm itself and check its manufacture date. You cannot replace or separately test the internal battery.

The U.S. Fire Administration recommends testing smoke alarms at least once a month using the test button.

1. Use the Test Button First

The button on the front of the smoke alarm is not merely there to make an annoying noise.

It is the manufacturer’s built-in functional test.

For most alarms:

Tell anyone nearby that you are about to test the alarm.
Press and hold the TEST or TEST/HUSH button.
Wait for the alarm to sound.
If the alarms are interconnected, confirm that the other alarms also sound.

Kidde says the test button checks the alarm’s electronic circuitry, horn and battery. First Alert similarly recommends regularly testing alarms using the test button.

If the alarm produces a loud, normal test pattern, the battery is providing enough power for the alarm to complete that test.

If it makes a weak sound, no sound, or behaves abnormally, don’t assume everything is fine merely because a status light is illuminated.

A light can tell you the unit has power. It does not replace an actual alarm test.

2. Test a Removable Battery Separately

If your smoke detector uses a replaceable 9-volt, AA or other removable battery, you can also test the battery itself.

A simple household battery tester is the easiest tool.

Remove the battery, connect it to the appropriate contacts on the tester and look at the reading.

A tester that puts the battery under some load is more useful than simply checking its unloaded voltage. A weak battery can sometimes show a seemingly reasonable voltage when nothing is drawing power from it and then sag when the alarm actually needs current.

That is one reason the alarm’s own test button remains the more important test.

If you have any doubt about an inexpensive replaceable battery, I would replace it rather than spend much time trying to prove that it has a little life left.

Can You Test a Smoke Detector Battery With a Multimeter?

Yes, if the battery is removable.

A multimeter can measure the battery’s DC voltage, which can help identify a battery that is obviously depleted.

But I would not use a multimeter reading as proof that the smoke detector is working.

Voltage is only one part of the picture. You still need to reinstall the battery and use the smoke alarm’s test button.

Think of the multimeter as a battery diagnostic tool, not a smoke-alarm test.

3. Test the Backup Battery in a Hardwired Smoke Detector

A hardwired smoke detector usually gets its normal power from your home’s electrical system. Many models also contain a battery so the detector can continue operating during a power outage.

That creates an easy testing mistake.

You press the test button, the alarm sounds, and you conclude that the battery is fine.

But if the alarm is still connected to AC power, you may primarily be proving that the hardwired power supply works.

The exact procedure for testing backup power varies by model, so check the instructions for your alarm.

For some hardwired Kidde alarms with removable backup batteries, the manufacturer instructs users to disconnect the alarm from its wiring harness and press the test button while the alarm is operating on battery power before reinstalling it.

If you are testing a hardwired alarm:

Identify the exact model first.
Follow its manufacturer’s testing procedure.
Do not alter household wiring simply to test the battery.
After testing, make sure the alarm is fully reconnected and operating normally.

If you have interconnected alarms, test the interconnected system as well. Pressing the test button on one alarm should activate the others when the system is designed to work that way.

4. What If Your Smoke Detector Has a Sealed 10-Year Battery?

This is where a lot of current smoke-detector confusion comes from.

A sealed 10-year smoke alarm does not have a battery you are supposed to remove, put on a tester and reinstall.

The battery is built into the alarm.

You test the entire alarm using its test button.

First Alert describes its sealed 10-year alarms as having batteries that are not designed to be replaced. When the battery or alarm reaches the end of its useful life, you replace the alarm.

If you’re looking all over the detector for a battery door and cannot find one, check the label on the back. It may say something such as:

10-year battery
sealed battery
non-replaceable battery
replace alarm after 10 years

This was exactly the issue I ran into when one of my own alarms began chirping. I initially assumed I needed to change a backup battery, only to discover that the battery was permanently built into the alarm.

I wrote about that experience in Why Your Smoke Detector Keeps Chirping After You Change the Battery.

5. Check the Date on the Smoke Detector

A smoke detector can pass its button test and still be old enough that it should be replaced.

Smoke alarms are not lifetime appliances.

The U.S. Fire Administration recommends replacing smoke alarms every 10 years. NFPA guidance similarly calls for replacing smoke alarms at 10 years unless the manufacturer specifies otherwise.

Take the alarm down and look for the manufacturing date printed on the back.

Do not assume that the date you bought the house or remember installing the detector is the date that matters.

If the detector is approaching or beyond its rated service life, replace it even if pressing the test button still makes noise.

This is also why, when I install an alarm, I like to write the installation date where I can find it later.

Does a Green Light Mean the Smoke Detector Battery Is Good?

Not necessarily.

LED meanings vary by manufacturer and model.

On many hardwired alarms, a steady green light indicates that the unit is receiving AC power. That tells you something useful—but it does not necessarily tell you that the backup battery is healthy or that the entire alarm is functioning properly.

Kidde specifically notes that a power-status light is not a substitute for using the test button.

Consult the label or manual for your alarm before interpreting its LEDs.

What If the Test Button Does Nothing?

If you press the test button and the alarm does not sound, treat that as a problem that needs to be fixed now.

For a detector with a replaceable battery:

Make sure the battery is installed in the correct direction.
Make sure the battery contacts are making proper contact.
Install a fresh battery of the type specified by the manufacturer.
Test the alarm again.

If it still does not sound, replace the alarm.

For a sealed-battery detector, there generally is no battery replacement step. If the alarm fails its test after following the manufacturer’s troubleshooting instructions, replace the unit.

For a hardwired alarm, confirm that it has AC power and follow the manufacturer’s troubleshooting procedure. If the alarm itself has failed, replace it.

What If the Alarm Sounds Weak During the Test?

I would treat an unusually weak, distorted or intermittent test sound as a warning rather than declaring the alarm good.

Kidde advises that an erratic or low alarm sound can indicate a fault.

If the unit uses a replaceable battery, install a fresh battery and test it again.

If the sound remains abnormal—or if the alarm is near the end of its service life—replace the detector.

Should You Test a Smoke Detector With Real Smoke?

Do not use a match, candle, lighter or other open flame to test a smoke alarm.

Kidde specifically warns against igniting combustible material to test an alarm because you could damage the detector or start a fire.

For routine homeowner testing, use the alarm’s test button as directed by the manufacturer.

There are specialized aerosol products used for certain detector tests, but you should only use a testing method specifically permitted by the manufacturer of your particular alarm. Spraying random substances into a smoke detector is not a substitute for following its instructions.

How Often Should You Test a Smoke Detector Battery?

The better question is how often you should test the alarm.

The U.S. Fire Administration, CPSC and other fire-safety organizations recommend testing smoke alarms at least once a month.

I would also test an alarm after:

Replacing its battery
Installing a new alarm
A power outage if it is hardwired
Removing and reinstalling the unit
Renovation or heavy dust near the detector
Any situation where you have reason to wonder whether it is operating correctly

First Alert specifically recommends testing after battery changes and power outages in addition to regular monthly testing.

Do You Still Need to Replace Smoke Detector Batteries Every Year?

It depends entirely on the alarm.

Alarm Type	Battery Maintenance
Replaceable-battery smoke alarm	Replace the battery according to the manufacturer’s instructions; traditional guidance is at least annually.
Hardwired alarm with replaceable backup battery	Maintain and replace the backup battery according to the manufacturer’s instructions.
Sealed 10-year battery alarm	Do not replace the internal battery. Replace the entire alarm when it reaches end of life or fails.
Hardwired alarm with sealed backup battery	The backup battery is not intended for routine replacement; replace the alarm at end of life.

The old advice to change every smoke-detector battery when you change the clocks made sense when almost every alarm used a conventional replaceable battery.

That is no longer true.

Many current alarms use sealed batteries designed to last for the service life of the detector.

Battery Problem or Dead Smoke Detector?

These symptoms can help narrow it down:

Symptom	What to Check
Alarm does not sound during test	Battery installation, power source, alarm age; replace if it still fails
Alarm chirps periodically	Low battery, improperly installed battery or end-of-life warning
New battery but still chirping	Alarm age, sealed battery/end-of-life warning, reset procedure
Green light but no test alarm	Do not rely on the light; troubleshoot or replace the alarm
Alarm is 10 years old	Replace the alarm even if it still passes a basic test
Several alarms begin chirping around the same time	Check manufacture dates; they may all be reaching end of life together

If your problem is specifically a detector that keeps chirping after you’ve already changed the battery, see our smoke-detector chirping troubleshooting guide.

When Should You Replace the Whole Smoke Detector?

Replace the detector if:

It fails the manufacturer’s test procedure
A fresh battery does not restore normal operation
It has reached the manufacturer’s stated end of life
It is around 10 years old and due for replacement
A sealed battery has reached end of life
The unit is physically damaged or malfunctioning

If you need a replacement, I’ve also put together a guide to the best smoke and carbon monoxide detectors in 2026, including hardwired, battery-powered and smart options.

Frequently Asked Questions

How do I know if my smoke detector battery is low?

A periodic chirp often indicates a low battery, but chirp patterns vary by model and can also indicate that the entire alarm has reached end of life. Check the manufacturer’s instructions and the manufacture date rather than assuming every chirp means the battery needs replacement.

How do I test a 9-volt smoke detector battery?

You can use a battery tester or multimeter to check a removable 9-volt battery, but the more important test is to reinstall it in the alarm and press the smoke detector’s test button. That verifies that the battery can actually operate the alarm.

Can I test a smoke detector battery without removing it?

Yes. Pressing the alarm’s test button is the normal way to verify that the alarm and its power source are functioning. For a sealed-battery alarm, this is the appropriate method because the battery is not intended to be removed.

How do I test a 10-year smoke detector battery?

You generally do not test the sealed battery separately. Press the alarm’s test button according to the manufacturer’s instructions and check the detector’s age. If a sealed-battery alarm reaches end of life or fails its test, replace the entire unit.

Does pressing the test button really test the smoke detector?

It tests important parts of the alarm, including its power supply, electronics and horn. Manufacturers specifically recommend the test-button procedure for routine testing. It does not mean the detector should remain in service beyond its rated lifespan.

Why does my smoke detector still chirp with a new battery?

The battery may not be the problem. The detector may need to be reset, the battery may not be seated correctly, or the alarm may have reached the end of its service life. Many newer alarms contain sealed batteries and must be replaced when they reach end of life.

How often should I press the smoke detector test button?

At least once a month. The U.S. Fire Administration and CPSC both recommend monthly testing.

The Test Button Tells You More Than a Battery Meter

If all you want to know is whether your smoke detector’s battery is doing its job, start with the test button.

A battery tester or multimeter can be useful for diagnosing a removable battery, but a good voltage reading does not tell you that the smoke alarm itself works.

Press the test button monthly. Check the date on the detector. And if an alarm fails its test or has reached the end of its service life, replace it rather than trying to squeeze a little more life out of one of the most important safety devices in your house.

Published on August 27, 2026

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Will Your Internet Work During a Power Outage? Cable, Fiber, Satellite & 5G Explained

Your home internet may keep working during a power outage, but only if your own networking equipment has backup power and your internet provider’s network is still operating.

The first part is relatively easy to solve. Put the right equipment on a UPS and your modem, router, fiber terminal, satellite equipment or cellular gateway can stay powered when the lights go out.

The second part is outside your control. Your internet connection depends on infrastructure beyond your house, and some of that infrastructure may also depend on commercial power. That is why a UPS can keep one home’s internet working perfectly during an outage while another home’s connection disappears even though all of the networking equipment inside the house is still running.

The answer also varies depending on whether you have cable, fiber, satellite or cellular internet.

Does Wi-Fi Work During a Power Outage?

Without backup power, usually not. Your Wi-Fi router needs electricity. When it shuts off, your wireless network disappears with it.

A UPS solves that part of the problem. Keep the router powered and it can continue broadcasting Wi-Fi.

But Wi-Fi and internet access are not the same thing. Wi-Fi is the network connecting devices inside your home. Unlike an old copper telephone that could receive its operating power directly from the phone line, modern internet equipment generally needs local electricity. For your devices to reach the internet, every essential piece of equipment between them and your internet provider also needs to remain powered.

In a typical home that might mean:

Cable internet: cable modem or gateway + Wi-Fi router
Fiber internet: optical network terminal (ONT) + router or gateway
Satellite internet: satellite dish or terminal + router or gateway
Cellular or 5G home internet: cellular gateway or hotspot + any separate router or Wi-Fi equipment
Mesh Wi-Fi: internet equipment + main mesh router + any satellite nodes you actually need
Larger home network: internet equipment + router/firewall + Ethernet or PoE switches + Wi-Fi access points

If one essential device loses power, the connection can stop there.

Why Old Landline Phones Often Worked During a Power Outage

If you grew up with a traditional Bell System-style copper telephone line, you may remember that the phone often continued working even when the electricity in the house went out.

That was possible because traditional analog telephone service, usually called POTS (Plain Old Telephone Service), did not normally depend on power from an outlet in your house. The telephone company supplied low-voltage DC power over the same pair of copper wires that carried the voice signal.

A traditional telephone line was typically powered at roughly 48 volts DC from equipment at the telephone company’s central office. The central office itself was designed with large battery banks and often generators, allowing telephone service to continue through utility outages.

As long as the telephone company’s network remained operating, a simple corded telephone could therefore keep working even if the rest of your house was completely dark.

There was an important exception: cordless phones still required electricity for their base station. During an outage, the phone line might still be working while the cordless phone was useless. This is one reason many households kept a basic corded telephone around for emergencies.

Modern home internet is very different. Cable modems, fiber ONTs, Wi-Fi routers, switches and VoIP phone equipment all contain powered electronics at the customer’s home. If those devices lose electricity, the service usually stops unless you provide battery backup.

In a sense, a UPS for your modem, ONT and router recreates part of what the old telephone network provided automatically: keeping the communications equipment powered even when utility electricity disappears.

Will Cable Internet Work During a Power Outage?

It can, particularly during a short outage.

If you put your cable modem and router on a UPS, they can continue operating after your house loses power. Whether they can still reach the internet depends on the cable company’s network.

Cable networks can have powered equipment outside your home, including nodes, amplifiers and network power supplies. Providers use batteries and generators to keep that infrastructure operating during outages, but backup power is finite and equipment can also be damaged by the storm or other event that caused the blackout.

That leaves several possibilities:

A short outage occurs and your UPS keeps the internet working without interruption.
Your equipment stays powered, but something in the cable network loses power and your connection stops.
The connection works initially and fails later when upstream backup power is exhausted.
The outage also damages the network itself, making backup power irrelevant.

This is why installing a whole-house generator does not necessarily guarantee working cable internet. The generator can power everything inside your house. It cannot power the cable company’s equipment down the street.

Will Fiber Internet Work During a Power Outage?

Fiber can be particularly well suited to staying online during a blackout, but your equipment at home still needs electricity.

Many fiber-to-the-home systems use a Passive Optical Network, or PON. Passive optical splitters can distribute the signal through much of the path between the provider and your house without requiring the chain of powered amplifiers found in some other broadband networks.

That does not make fiber independent of electricity. Your provider still needs its network equipment operating, and your end of the connection needs power too.

The important device in many homes is the Optical Network Terminal, or ONT. It terminates the fiber connection at your house and provides the connection used by your home network.

If the ONT loses power, your fiber internet stops even if the Wi-Fi router is still running.

So if you have fiber, find the ONT and its power supply before deciding what belongs on your UPS.

AT&, for example, says customers with an external ONT need backup power for that equipment as well as their gateway. See AT&’s battery-backup guidance.

Will Satellite Internet Work During a Power Outage?

Satellite internet can continue working during a local power outage if you can keep the equipment at your house powered and the satellite network itself remains available.

This gives satellite an interesting advantage during some emergencies. Your connection is not dependent on a cable running through the neighborhood or the same chain of terrestrial equipment used by a local cable network.

If a storm knocks out neighborhood cable infrastructure while your satellite terminal still has a clear view of the sky, satellite service may remain available.

But the equipment at your house still needs electricity.

For a system such as Starlink, that means the satellite terminal and whatever router or networking equipment you use with it. Traditional satellite systems have the same basic requirement.

This makes backup power especially important for someone who relies on satellite internet at a rural property, vacation home or other location where outages may last longer than they do in a dense urban area.

Satellite Internet Can Require More Battery Capacity

There is one important consideration when comparing satellite with cable or fiber: a satellite terminal may consume more electricity than a simple cable modem or fiber ONT.

That affects runtime.

A UPS that can keep a low-power modem and router operating for a long time may run down considerably faster when powering satellite equipment.

If satellite internet is important during a long outage, I would pay close attention to the actual wattage of the equipment and the battery capacity available. A conventional UPS may still be useful for short interruptions, while a larger battery or generator becomes more attractive when outages routinely last for hours.

Will Cellular or 5G Home Internet Work During a Power Outage?

Often, yes, provided both your cellular gateway and the carrier’s network remain operating.

If you use T-Mobile, Verizon or another fixed-wireless home internet service, your gateway still needs electricity. Put it on a UPS or another battery source and it may continue providing internet even though utility power to your house has failed.

Cellular internet can also be useful during an outage because it provides a completely different path to the internet than your cable or fiber connection.

But cell towers and the networks behind them need power too. Carriers use batteries and generators at many sites, but backup power can eventually run out and physical damage can still take equipment offline.

There is another problem during widespread outages: congestion.

If cable and fiber connections fail across a neighborhood, large numbers of people suddenly move onto cellular networks. A cellular connection that is normally fast can become much slower just when everyone needs it.

Cellular Home Internet Can Be Easy to Back Up

One advantage of cellular home internet is that the equipment can be quite simple. A 5G gateway may combine the cellular modem, router and Wi-Fi access point in a single device.

In that case, you may only need to keep one device powered.

If you use a separate router, mesh system, Ethernet switch or access point, those devices also need backup power if you want to continue using them.

Your Phone Is Already a Battery-Powered Internet Connection

A smartphone has its own battery, which makes it one of the easiest emergency internet connections available.

If the cellular network is still operating, a phone may continue working even when every piece of networking equipment in your house is off.

You can also use the phone as a hotspot for a laptop or another device.

The limitations are battery life, signal strength, data-plan restrictions and network congestion. For occasional emergencies, that may be enough. If internet access is critical, a dedicated cellular connection or automatic cellular failover system is more robust.

A Fios Backup Battery May Not Back Up Your Internet

There is another easy mistake to make: seeing a battery installed by your internet provider and assuming it keeps everything running.

That is not necessarily what it was designed to do.

Verizon’s documentation for its traditional Fios Digital Voice battery backup says that backup power is intended for voice service rather than internet or television service.

See Verizon’s Fios battery-backup documentation.

If you want internet access during an outage, verify exactly what an existing provider-installed battery powers. You may still need your own UPS for the ONT, router and other network equipment.

What Internet Equipment Should You Put on a UPS?

Start at the internet connection coming into your house and follow the path to the devices you actually need.

For a simple cable setup, that usually means:

cable modem or gateway
Wi-Fi router, if it is separate

For fiber:

ONT and its power supply
router or ISP gateway

For satellite:

satellite terminal or dish power supply
router or gateway

For cellular home internet:

cellular gateway
any separate router, switch or Wi-Fi equipment you need

A larger home network may also require:

Ethernet switch
PoE switch
Wi-Fi access points
mesh Wi-Fi nodes
firewall or router appliance

You probably do not need every piece of network equipment running during a blackout. Every additional device consumes battery capacity.

For a simple network, see my guide to the best UPS battery backups for routers and modems.

If your network has grown into a rack or closet full of switches, access points, cameras and storage, I have a separate guide to choosing a UPS for a network closet, NAS, PoE switches and cameras.

Do You Need to Keep Your NAS Running?

Not necessarily.

I run both networking equipment and a NAS on backup power, but their priorities are different during a long outage.

The UPS gives a NAS time to ride through a brief interruption or shut down safely. If the outage is going to last for hours, keeping storage running may consume battery capacity that would be more useful keeping the router, ONT and Wi-Fi alive.

Ideally, a larger home network can shut down nonessential equipment while leaving the low-power networking devices running. With systems like a NAS, it is best to let them shut down gracefully than to abruptly stop.

That can turn a relatively modest UPS into a surprisingly useful source of internet runtime.

How Long Can a UPS Keep Your Internet Running?

Networking equipment is a good candidate for battery backup because its power consumption can be relatively low.

A modem, router and fiber ONT may together consume only a few dozen watts. Start adding switches, multiple access points, PoE cameras, a NAS or satellite equipment and the load can rise quickly.

This is why the VA number printed on a UPS does not tell you how long your internet will run. Runtime depends heavily on the actual wattage of the devices connected to it and the battery capacity of the UPS.

A UPS that provides only a short runtime for a desktop PC may be able to run a modem and router much longer.

If runtime matters, measure or estimate the equipment you actually intend to keep running rather than sizing the UPS around everything that happens to be plugged in nearby.

A UPS Helps Even If Your Outages Are Short

There is another benefit that has nothing to do with surviving an all-day blackout.

A very short power interruption can reboot your modem, router, switches and access points. Power may return almost immediately while you spend the next several minutes waiting for the network to reconnect.

A UPS prevents that.

For homes with reasonably reliable utility service, this may be the most common benefit. The UPS quietly handles flickers and short outages without the network going down at all.

The worse the power reliability at the equipment’s location, the more runtime becomes important. A house that sees an occasional five-minute outage has very different backup-power needs from a remote property that can lose power for several hours.

What Happens During a Long Power Outage?

Eventually a conventional UPS reaches its limit.

During a long outage, several things can end your connection:

your UPS battery runs out
your ISP’s backup power runs out
outside network equipment fails
storm damage interrupts the physical connection
cellular networks become congested

If outages where you live are regularly measured in hours rather than minutes, the next step is larger-scale backup power.

That might mean a portable power station, whole-house battery or generator.

These systems can keep your equipment operating far longer than a normal UPS. They still cannot guarantee that your internet provider remains online, but they solve the problem of running out of power inside the house.

Using Cellular as a Backup Internet Connection

Even if cellular is not your primary internet service, it can provide a valuable second path when cable, fiber or satellite service fails.

The simplest backup is the hotspot built into your phone.

More sophisticated home networks can automatically switch to a dedicated cellular connection when the primary ISP goes down.

Some providers also sell cellular failover services. These can protect against an ISP outage as well as a power outage, provided the cellular network remains available and the backup equipment itself has power.

I would treat cellular as another layer of resilience rather than a guarantee. During a widespread outage, cellular networks can become congested as thousands of people shift traffic onto them at the same time.

How to Test Whether Your Internet Will Work During an Outage

You do not have to wait for the next storm to test half of the system.

If your network is already connected to a UPS, safely disconnect the UPS from wall power and confirm that everything required for internet access stays online.

Check the modem, ONT, satellite terminal or cellular gateway as appropriate, along with the router and any switch or access point you need.

If the internet continues working, you have verified that your equipment and UPS are configured correctly.

The next real neighborhood outage tests the other half: your provider.

If all of your equipment remains powered and the internet still works, you know the provider’s local infrastructure survived that outage.

If your network stays powered but the internet connection disappears, check the ISP’s outage information. The failure may be upstream from your house.

This is worth learning before spending thousands of dollars on larger backup-power equipment under the assumption that powering the house automatically keeps the internet online.

What I Would Do If Internet During an Outage Matters

I would build backup connectivity in layers:

Put the modem, ONT, satellite terminal or cellular gateway and router on backup power.
Back up any switch or Wi-Fi access point you actually need.
Leave unnecessary high-draw equipment off the battery during a long outage.
Measure how long your network actually runs from the UPS.
See how your ISP behaves during a real local outage.
Keep a phone hotspot or other cellular option available.
If long outages are common, consider a larger battery system or generator.

This is particularly useful at a second home or other property you monitor remotely. Keeping the internet connection alive may also keep security cameras, leak sensors, thermostats and other connected devices reachable when the property loses utility power.

So, Will Your Internet Work When the Power Goes Out?

It may, and relatively inexpensive backup power can dramatically improve the odds during a short outage.

You need to keep every essential piece of networking equipment powered. For cable, that generally means the modem and router. For fiber, remember the ONT. Satellite users need to power the satellite equipment, while cellular users need to keep their gateway running.

After that, the provider’s network becomes the limiting factor.

If the network outside your house remains online, your own backup power may keep you connected long after everything else in the house goes dark. If the provider loses upstream infrastructure, no UPS inside your house can restore that connection.

For most homes, I would start with the inexpensive part of the problem: keep the essential networking equipment on battery backup. It prevents nuisance reboots during short outages and gives you a good chance of staying online during longer ones when your provider remains available.

To choose the right size, start with my guide to UPS battery backups for routers and modems.

Published on August 18, 2026

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Best NAS for Home Use in 2026: Synology, UGREEN, TerraMaster or DIY?

Disclosure: As an Amazon Associate I earn from qualifying purchases. Product links may earn a commission at no additional cost to you.

I built my own NAS. That does not mean I think you should.

My current NAS runs TrueNAS on a low-power Intel N100-based system. I like having complete control over the hardware and software, and I like knowing that if I want to change something later, I am not waiting for a NAS manufacturer to decide whether I am allowed to do it.

But building a NAS also means owning the problems. You choose the hardware. You install the operating system. You troubleshoot it. You decide how backups work. When something breaks, there is no single company responsible for the whole box.

If a friend asked me what NAS to buy for a house today, I would probably send them toward a prebuilt NAS instead. Pre-built means all you do is install hard drives.

The interesting part in 2026 is that Synology is no longer the only obvious answer. UGREEN and TerraMaster now sell boxes with considerably more aggressive hardware, faster networking and surprisingly capable processors. For a while, I owned a QNAP. Meanwhile, building your own NAS remains attractive if you actually want the flexibility rather than simply wanting somewhere safe to store your files.

Quick Answer: The Best Home NAS in 2026

NAS	Best For	Why I Like It	My Take
Synology DS925+	Most homes	4 bays, DSM, dual 2.5GbE, expandable memory	Safest recommendation
UGREEN DXP4800 Plus	Best hardware value	10GbE, 2.5GbE, Intel CPU, 8GB DDR5, 2 NVMe slots	Very compelling alternative to Synology
TerraMaster F4-425 Pro	Power users and media	Intel N350, 16GB RAM, dual 5GbE, 3 NVMe slots	A lot of hardware in a 4-bay box
Synology DS225+	Simple 2-bay NAS	DSM, 2.5GbE, compact and easy to manage	Good first NAS
Build Your Own + TrueNAS	Maximum control	Choose your own CPU, RAM, networking, case and drives	What I use

If I wanted the easiest recommendation for most people:

Check the Synology DS925+ diskless on Amazon

If I cared more about getting the most hardware for my money, I would look very closely at the UGREEN DXP4800 Plus.

Best NAS for Most People: Synology DS925+

Synology remains the easiest NAS company for me to recommend to someone who wants storage to behave like an appliance.

That is what I always wanted from my NAS. I enjoy building computers, but once storage is running, I want it to sit quietly in a corner and serve files.

The Synology DS925+ is a four-bay NAS built around an AMD Ryzen V1500B processor with four cores and eight threads. It comes with 4GB of ECC memory and can be expanded to 32GB.

There are two 2.5GbE Ethernet ports and two M.2 NVMe slots that can be used for caching or storage pools with compatible SSDs.

Four drive bays are also a sweet spot for a home NAS.

Two bays work, but they limit your choices. With four drives you can build an array that provides redundancy while retaining substantially more capacity. Four bays also give you room to grow without jumping into a large, expensive box.

The reason I would buy Synology, however, is DSM. DSM is Synology’s software platform.

The hardware specifications are no longer particularly exciting compared with UGREEN and TerraMaster. You are buying a mature storage platform with integrated backup, snapshots, file sharing, photo management, remote access and a large application ecosystem.

I would buy the DS925+ for: someone who wants a NAS to be reliable infrastructure rather than another hobby.

I would skip it for: someone who wants the most CPU, RAM and network bandwidth possible for the money, or someone who enjoys replacing the manufacturer’s software with their own.

Check the Synology DS925+ on Amazon

Synology Backed Away From Its Worst Hard-Drive Restriction

There is an important update if you followed the controversy around Synology’s 2025 NAS models.

Synology initially became much more restrictive about which drives could be used with its newer DiskStation Plus systems. That was a serious strike against the platform for me. A NAS is a box whose main purpose is holding hard drives. I do not want the manufacturer unnecessarily narrowing my choices.

With DSM 7.3, Synology loosened that policy.

Current 2025-model DiskStation Plus systems including the DS925+ can create storage pools using non-validated third-party 3.5-inch hard drives and 2.5-inch SATA SSDs. Synology still recommends checking its compatibility list, and restrictions remain around some features such as M.2 storage pools.

You can read Synology’s current drive compatibility policy here.

I still prefer completely open hardware, but this makes the DS925+ considerably easier to recommend.

Best Hardware for the Money: UGREEN NASync DXP4800 Plus

The UGREEN NASync DXP4800 Plus is the NAS that makes the Synology hardware look conservative.

It has:

Four SATA drive bays
Intel Pentium Gold 8505 processor with five cores and six threads
8GB DDR5 RAM, expandable to 64GB
One 10GbE Ethernet port
One 2.5GbE Ethernet port
Two M.2 NVMe slots
HDMI output
Intel Quick Sync support for compatible hardware transcoding

That is a remarkable amount of hardware for a four-bay NAS.

The 10GbE port is especially interesting if you regularly move large files. I recently wrote about 2.5GbE versus 10GbE for a home network, and a NAS is one of the places where 10GbE can actually make sense. Large backups, video files and bulk transfers can use bandwidth that ordinary web browsing never will.

You still need the rest of the network to keep up. A 10GbE port on a NAS does not magically make a gigabit switch or a slow hard drive ten times faster.

UGREEN also officially supports third-party drives from manufacturers including Western Digital, Seagate and Toshiba.

The tradeoff is software.

UGREEN has put substantial development into UGOS Pro, but Synology has been building DSM for a long time. If I were buying a NAS primarily because I wanted the most polished turnkey storage experience, I would still lean Synology.

If I were looking at the specifications and thinking about Docker, media serving, 10GbE and other home-lab uses, the DXP4800 Plus becomes extremely appealing.

I would buy it for: a technically comfortable home user who wants stronger hardware and 10GbE without building an entire NAS.

I would skip it for: someone whose highest priority is having the longest-established NAS software ecosystem.

Check the UGREEN DXP4800 Plus on Amazon

Best Power-User 4-Bay NAS: TerraMaster F4-425 Pro

The TerraMaster F4-425 Pro may be the most interesting hardware configuration in this group.

The N350 version comes with:

Intel N350 eight-core processor
16GB RAM
Four SATA drive bays
Three M.2 NVMe slots
Two 5GbE Ethernet ports
Hardware 4K transcoding support
HDMI output

Three NVMe slots in a four-bay NAS is unusually generous. So is shipping it with 16GB of memory.

The dual 5GbE ports are also an interesting compromise. Most houses do not have 10GbE everywhere, and 5GbE can provide considerably more bandwidth than 2.5GbE without pushing every component toward 10GbE.

TerraMaster runs its TOS operating system. TOS 7 has continued to add backup, security and application features, and the hardware provides enough resources for Docker and media workloads.

Again, my hesitation compared with Synology is not the box. It is whether I value the extra hardware more than Synology’s software ecosystem.

I would buy it for: someone who wants a prebuilt enclosure but thinks like a home-lab user.

I would skip it for: someone who wants the simplest possible NAS experience and does not care about 5GbE, extra RAM or multiple NVMe slots.

Check the TerraMaster F4-425 Pro on Amazon

Best Simple 2-Bay NAS: Synology DS225+

Some people do not need four drives.

If the goal is a central place for photos, documents, computer backups and a modest media collection, the Synology DS225+ is much easier to justify.

It has two drive bays, an Intel Celeron J4125 processor, 2GB of memory, one 2.5GbE port and one 1GbE port.

For a two-drive NAS, the obvious configuration is usually a mirror: two drives containing the same data. If one fails, the other remains.

The downside is capacity efficiency. Two 4TB drives mirrored together give you approximately one drive’s worth of usable capacity rather than 8TB of protected storage.

That is the price of redundancy.

If you already think you will eventually need more than one mirrored pair, I would spend the money on four bays at the beginning. Replacing the entire NAS later is usually more annoying than buying a little extra room today.

I would buy it for: backups, photos, documents and ordinary home storage where two bays are enough.

I would skip it for: anyone who is already thinking about a large Plex library, several users, surveillance storage or substantial future expansion.

Check the Synology DS225+ diskless on Amazon

Should You Buy a NAS With the Drives Already Installed?

Amazon also sells some of these systems bundled with drives.

That can be appealing. If part of the reason you are buying a Synology is that you do not want to build your own NAS, having someone else choose the drives is consistent with that goal.

But I would compare the numbers before clicking Buy, especially now with the price of hard drives having gone up in recent years.

For example, we found a DS925+ bundle with four 12TB Seagate IronWolf drives. That gives you 48TB of raw disk capacity without separately shopping for four drives.

A four-drive RAID configuration will not give you all 48TB as usable protected storage. With one drive’s capacity devoted to parity, you are looking at roughly 36TB before filesystem and formatting overhead. Using two-drive fault tolerance reduces usable capacity further.

The alternative is straightforward:

Buy the DS925+ diskless.
Buy four NAS hard drives yourself.
Compare the combined price with the preloaded bundle.

Installing hard drives in a NAS is not much of a build. You slide the drives into the trays, install them and let the NAS initialize the array.

So I would happily buy a preloaded bundle if the premium were small. I would not pay a huge premium merely to avoid putting four drives into four trays.

There is also a DS225+ bundle with two 4TB IronWolf drives for someone who wants a smaller ready-to-go system.

Which Hard Drives Would I Buy?

I would use NAS-rated CMR hard drives for the main storage array.

Two current choices I would consider are WD Red Plus and Seagate IronWolf Pro.

WD Red Plus 12TB: My Home NAS Choice

The WD Red Plus 12TB is the drive I would start with for an ordinary home NAS.

WD Red Plus drives use CMR recording and are designed specifically for RAID-equipped NAS systems. The line carries a three-year limited warranty.

Check the WD Red Plus 12TB on Amazon

Seagate IronWolf Pro 12TB: The Step-Up Drive

The Seagate IronWolf Pro 12TB is a higher-end option.

The ST12000NE0008 is a 7200RPM NAS drive with a five-year limited warranty. Seagate also includes its Rescue Data Recovery Services with the IronWolf Pro line.

For a normal household NAS, I would compare the current price against WD Red Plus before paying extra. For heavier workloads or where the longer warranty has value, the Pro is easier to justify.

Check the IronWolf Pro 12TB on Amazon

When Four Bays Aren’t Enough

Four bays are enough for a lot of households, including mine for many years.

If you already know you need more, buy the larger enclosure now. I went with 5 bays and am now looking to expand.

UGREEN’s DXP8800 Plus provides eight SATA bays, two M.2 NVMe slots, an Intel Core i5-1235U processor and dual 10GbE Ethernet ports.

That is the one I would look at for a serious home media archive, content-creation storage or a home lab where four drives already feel restrictive.

Check the UGREEN DXP8800 Plus on Amazon

And then there are systems like the TerraMaster T12-500 Pro.

This is a 12-bay NAS with an Intel Core i7-1255U, 16GB DDR5 memory, two 10GbE ports and two M.2 NVMe slots.

It is impressive hardware. It is also far beyond what I would recommend to someone who simply wants family backups and a photo library.

If you need twelve drives, you probably already know why.

Should You Build Your Own NAS?

I did.

I have built storage servers before, used commercial NAS products and eventually returned to a homebuilt system. My current machine runs TrueNAS on low-power Intel hardware.

I like the flexibility.

If the motherboard dies, I can replace it. If I want faster networking, I can change it. If I want more RAM, a different case or another operating system, I am not limited by what a NAS vendor decided to expose.

TrueNAS also gives me ZFS, snapshots and a storage-first operating system that fits how I want the machine to behave.

I wrote about that decision in TrueNAS vs. Unraid vs. OpenMediaVault.

There is a cost to all that freedom: your time.

If you enjoy choosing motherboards, SATA controllers, cases, power supplies and software, building a NAS can be rewarding.

If your real objective is to back up your family photos and stop worrying about storage, buying a Synology makes a great deal of sense.

Build your own if:

You enjoy maintaining hardware
You want complete control over the operating system
You need unusual drive or networking configurations
You want to reuse existing hardware
You care about avoiding vendor lock-in

Buy a prebuilt NAS if:

You want one company responsible for the hardware and operating system
You value simple updates and administration
You want storage to disappear into the background
You have better things to do than troubleshoot a storage server on Sunday afternoon

If you want to see how I got here, start with my Building My NAS series.

How Many NAS Bays Do You Need?

This may be the most important purchasing decision.

Two Bays

Best for simple household storage, backups and smaller photo or media collections.

A mirrored two-drive configuration is easy to understand, but expansion is limited. When you need more capacity, you usually replace the drives with larger ones.

Four Bays

This is where I would start for most serious home NAS purchases.

You get much better choices around redundancy, capacity and expansion without turning the NAS into a giant machine.

The DS925+, DXP4800 Plus and F4-425 Pro all live here for a reason.

Eight Bays

An eight-bay unit makes sense if you have a large media collection, video-production files, extensive backups or already know four drives will not be enough.

The DXP8800 Plus is the step-up option in this guide.

Twelve Bays

This is specialized territory for a home user. If you can explain exactly what you are going to put on twelve hard drives, great. Otherwise, I would rather buy fewer larger drives in a smaller NAS.

RAID Is Not a Backup

This is worth repeating every time I write about storage.

A RAID array can protect you from a hard-drive failure. It does not protect you from everything else.

If you accidentally delete a folder, ransomware encrypts your files, the NAS is stolen, the house floods or something destroys the entire machine, having another copy of the data matters much more than how clever your RAID configuration was.

I use redundant backups rather than trusting the primary NAS as the only copy.

I have even experimented with refurbished enterprise hard drives for secondary backup systems. I am more comfortable taking that risk on an additional redundant copy than on the primary storage array.

For anything you genuinely care about, I would aim for multiple copies with at least one copy physically separate from the NAS.

Don’t Forget the UPS

A NAS is one of the devices I care most about shutting down cleanly.

I have experienced an unsafe shutdown during a power outage, and I have also had a UPS battery fail when I expected it to protect my equipment.

That is why I would budget for a UPS as part of the NAS purchase rather than as an optional accessory sometime later.

If the NAS lives with your router, switches, PoE cameras and other network equipment, see my guide to the best UPS for a home network closet, NAS and PoE equipment.

If you are only protecting a smaller networking configuration, I also have a guide to the best UPS for a router and modem.

What NAS Would I Buy Today?

If I were buying for a family member who wanted a NAS and did not want a new hobby, I would buy the Synology DS925+.

Four bays provide enough flexibility for most homes, DSM is mature, 2.5GbE is appropriate for a modern home network, and Synology’s decision to restore broader third-party hard-drive support removed one of my biggest objections.

Check the DS925+ diskless on Amazon

If I were buying for myself and wanted a prebuilt unit, the decision becomes harder.

The UGREEN DXP4800 Plus gives me 10GbE, more RAM and an Intel processor with Quick Sync.

The TerraMaster F4-425 Pro goes further with 16GB of memory, dual 5GbE and three NVMe slots.

Both tempt me because I like hardware.

And then I remember why I built my own NAS in the first place.

For most people, though, that last sentence is probably a warning rather than a recommendation.

Frequently Asked Questions

What is the best NAS for home use in 2026?

For most people, I would choose the Synology DS925+. It provides four drive bays, dual 2.5GbE networking and Synology’s mature DSM software. Buyers who prioritize hardware specifications should also consider the UGREEN DXP4800 Plus and TerraMaster F4-425 Pro.

Is a 2-bay or 4-bay NAS better?

A two-bay NAS is sufficient for basic backups and storage. A four-bay NAS gives you much more flexibility for redundancy, capacity and future expansion. If you expect your storage needs to grow, I would start with four bays.

Is Synology still worth buying?

Yes. Synology hardware is often less aggressive than competing systems from UGREEN and TerraMaster, but DSM remains a major reason to buy a Synology NAS. DSM 7.3 also restored support for creating storage pools with many non-validated third-party hard drives on 2025 DiskStation models.

Is UGREEN NAS better than Synology?

UGREEN currently offers stronger hardware specifications at several price points, particularly around processors, memory and networking. Synology’s advantage is its mature DSM software ecosystem. Which is better depends on whether you value hardware capability or a more established turnkey NAS platform.

Should I build a TrueNAS server instead of buying a NAS?

Build a TrueNAS server if you want control over the hardware and software and are comfortable maintaining it yourself. Buy a prebuilt NAS if you want a simpler appliance with one vendor responsible for the platform. Even people who are capable of building and maintaining a server may opt to let someone else handle those details.

How much storage do I need in a home NAS?

Estimate how much data you have today, include the devices you plan to back up, then leave substantial room for growth. Remember that RAID redundancy reduces usable capacity. Four 12TB drives do not normally provide 48TB of protected usable storage.

Do I need NAS-specific hard drives?

I prefer NAS-rated CMR drives for a primary NAS because they are designed for continuous operation in multi-drive enclosures. WD Red Plus and Seagate IronWolf Pro are two current examples.

Published on August 16, 2026

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