"Rechargeable batteries are great! They power all our favorite gadgets. Without them, we'd be tossing all these alkaline batteries and their caustic chemicals back into the environment, and that's a recipe for bad times.
The problem with rechargeables is the myriad plugs, ports, sockets and bays you need to have around to keep them filled with electrons. Oh, the battery's dead, but where's that dang recharger? Sound familiar? Then, one day, an enterprising geek built the charger into the battery. Not just any charger, mind you. They used a standard USB port built right into the battery.
Now, when your batteries are flatlining, pop the cap, and jam 'em into your nearest ubiquitous USB port. Whether it's on your computer, laptop, monitor or powered USB hub, all you need is 250mA of juice from your universal serial bus, and a little patience. In just a few hours, you'll have 1300mAH of power!"
So as you can see, very good stuff. Head on over and check them out yourselves!