The 2500 mAh internal battery has enough life to fully charge an iPhone, giving you about 8 hours of additional talk time. The 5V/1A USB output means that it charges at the same rate of most wall chargers. Includes a USB to Micro USB connecting cable which can recharge the battery backup or be used to charge up devices like Android Smartphones from Samsung, Motorola, HTC, Nokia, and others. Includes microfibre pouch & black window box for easy transportation and keeping your cables and charger together • lithium ion battery. Capacity- 2500mAh : Cycle Life - = 1000 cycles : Input current 5V/0.5A: Output current 5V/1A : Discharge time 2hrs: Recharge time: 5.5hrs. Safety: over voltage, over current, over load & short circuit protection • ABS: 10.6 ( l ) x 3.6 ( w ) x 1.2 ( h )