This vibrant battery backup will keep your mobile devices charged up. The 4000 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 micro USB 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. Available in11 exciting • Lithium ion battery. Capacity- 4000mAh : Cycle Life - = 500 cycles : Input current 5V/1A: Output current 5V/2.1A : Discharge time 2-3hrs: Recharge time: 4-5hrs. Safety: over voltage, over current, over load & short circuit protection • Aluminium & ABS: 9.8 ( l ) x 4 ( w ) x 2.1 ( h )