tech e blog

What sets these batteries apart from the rechargeable batteries is that each one features a built-in USB connector, which lets you charge them directly from your computer. Available now from ThinkGeek -- priced at $19.95 (2). Video review after the break.

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