A draining battery on your cell phone surely irritates, especially when there is an important client on the line and no alternative power source handy. This Wrist Band Portable Battery is one way you can carry around some extra power. The device fits snugly around your wrist and contains a rechargeable lithium-ion battery for extra portable power. To use it, charge the battery up for 5 hours and take it along with you. It comes with eight different types of power connectors that will fit most major cells phones, the Nintendo DS, and the Sony PSP. When fully charged the battery will provide 3 hours of talk time on a cell phone and 8 hours of listening time on a MP3 player.

The Wrist Band Portable Battery is available from Chinavasion for $24.84 each.

Via - Gizmodiva