Powerchimp is the lightweight portable charger that fits in your pocket to power up your devices day to day or in an emergency. Supplied with two rechargeable AA batteries, powerchimp puts up to 48 hours of instant power at your fingertips, ready when you need it most.Powerchimp is developed with a safety feature to protect against overcharging. Easy to use, one button technology in a tough casing makes this the portable charger to take everywhere.Compatible with standard cellphones (including Nokia, LG, Samsung, Sony Ericsson and Motorola) and other digital devices.