Li-polymer wrist-strap battery keeps phone going

The QP1500A li-polymer battery is designed into a wristband to provide extra battery power for portable devices such as smart phones. The battery provides 1,500 mAh capacity with an input/output of 5 V and 0.5 A.

The wristband battery has four LEDs to indicate the charge level. It weighs 85 g, operates from 10° to 45°C, and can be charged 500 times. It is available in black, purple, blue and green.