Two years ago, in one of our earliest posts, we blogged about a new kind of rechargeable battery available from a company in the United Kingdom.

We still love this product in theory. After two years, we finally saw it being sold at the counter at our local Microcenter. We’re still charging them, which takes 5-7 hours, as we speak, and the product is everything we expected. It is small, easy to recharge, and is perfect as emergency batteries for the peripherals we carry in our bag with our laptop.

However, despite our high hopes, their website two years later has not changed much. The AAA, C/D, 9V and various other batteries have not yet been released for sale. Maybe thre are problems with the longevity of the products.

We checked out what people were saying about these batteries..Here’s a review from one blog. It notes that the shipping process should you buy direct from the manufacturer is efficient, and that the batteries have half the charge of a standard rechargeable battery. They have 1300mAh, but bear in mind the charger is built in so that likely takes space in the form factor.

We haven’t had much to say in a while…something we intend to rectify soon. But we saw this recently, and thought it might be of some help. Venturebeat reports that Retrevo, a search engine for gadgets, is attempting to simplify the information overload that comes when you try to make a gadget purchase.

When you make a search, each resulting device/gadget is ranked by a combination of “value” (the number of desirable features at the price point) and community sentiment (the combined wisdom of experts and consumers). The results pages offer the product’s model number, a picture of the product, its price range and two cartoon thumbs. One thumb represents value, the other represents community sentiment. They can point up, sideways, or down. The top ten results contain a reasonable mix of high value, low cost products with good buzz around them and medium and high-cost products that deliver what you would hope to get at those price points.

The site lets you choose between the expert and consumer opinions.

The company says its product index doesn’t contain out-of-date products or those that aren’t widely available in stores. This compares favorably with CNET, where I often find myself reading positive reviews for last year’s technology. It’s also more simple and elegant than Buzzillions, which requires more input to find devices you might like.

So check out Retrevo at www.retrevo.com. We did some random searches, and intend to try this product a bit more.

• Major League Baseball claims that Slingbox, the device that allows people to watch their home TV feed remotely over the internet, is illegal. Legal experts say users are not breaking any laws by using the device. The Slingbox, essentially…allows people to watch cable they’ve already paid for from another location. Cable or satellite prices can be high enough, especially when we have to buy 800 channels to get the three we actually want…now we have to pay because we want to see it when we aren’t at home?
• This spring, the XPower Powerpack Solar, a 10-amp battery with a 5-watt solar panel will hit shelves. The $169 device can run a laptop for 3 hours and a TV for 45 minutes. It takes 40 hours of sunshine to charge it…so it may not take off as much as the company hopes…although they expect people will charge it at home and top it off on the road…Green is in…is that green?
• Scientists at the University of Utah have succeeded in building small devices to turn heat into sound and then electricity. The devices could be used to produce electricity from waste heat in various industries. For the home, it could cool electronics, specifically the cooling of computers…it would also make them more energy efficient. A thermo-acoustic cooling device could cost about $100-200.
• The Free Software foundation has launched Playogg.com to promote awareness of the open-source multimedia format OGG as an alternative to MP3 and AAC, which are proprietary. Support for OGG on desktops is fully mature, with a variety of programs….hardware players are limited, although various ones do and several others can be hacked. We use OGG on some of our systems…

U3, as we said…is gone. Sandisk, which owns the product…has decided to discontinue the product. We always had a problem with it. It tended to take too long to load…was much too slow.

We had recommended the menu launcher and accompanying open-source software from www.portableapps.com. The menu takes very little in terms of system resources and it is optional…the programs there can run without it.

Sandisk, however, has announced it will replace U3 with a new software and hardware solution. For this, they have joined forces with Microsoft. The new offering is expected to be commercially available in the second half of 2008. It will include TrustedFlash security technology. TrustedFlash embeds digital rights management software on the card instead of the player. We are not about to embark on another diatribe against the inconvenience of DRM…but having it on the media instead of the player can be an advantage.

GigaOm directed us to another product…MojoPac…which we hadn’t previously noticed. MojoPac allows you to install almost any application to a USB 2.0 compliant storage device, including iPods, USB hard drives, USB flash memory drives, etc. One downside is that the current version requires administrative privileges on the Host PC. U3 did not, nor do the PortableApps menu launcher. MojoPac is working on the issue for future versions though…although most solutions require the cooperation of the administrator.

We’ve been experimenting with bootable USB drives that can either act using the PortableApps series of open source portable applications or boot a complete Linux or Windows based operating system…We’ll have more on this later.