Can be charged with a regular Battery charger, or on Any fr4ee usb port on a PC, laptop, Xbox 360, or USB car charger.
The capacity of USBCELL is 1300mAH - this is greater than some ordinary NiCd and NiMH batteries. Some new high-capacity NiMH batteries can go up to 2500mAH.
The charge should take about 5 hours by USB and the light should go off when USBCELL is fully charged.
Most USB ports are 'powered' and capable of providing up to 500mA current at 5 volts (USBCELL should draw about half of this maximum current).
Cool battery idea. It looks pretty useful if you keep your computer on for long periods of time, or if you have a wireless mouse that uses AA batteries since when your out of power you just take the already charge battery out of the usb port and put them into your mouse, or other device.
I think it cost about 18 dollers more then a pack of regular 2 AA rechargable batteries pack that cost about 7 bucks, but you wouldnt need to buy a charger since it can charge by USB, so you save about 10 dollers.
I think these are good for Travellers since You wont have to carry along a charger in your luggage if you got a laptop thats connected to the wall, or u just steals the laptop's battery power from the usb port and move it to the the AA batteries.