Americans use around 2 Billion disposable batteries a year, one of those numbers that’s big enough for most of us to have no actual concept of it, but it’s a lot. If you find yourself being a larger than normal part of this statistic the obvious solution would be to use a rechargeable battery.

One of the more popular items for the holiday season this year will no doubt be the smartphone. Probably the most well known example of this is the iPhone 3G, the Motorola Droid is a fairly recent comer to the scene and has some very nice features