KAYSCASE PowerPack Apple new iPhone 5 / iPhone 5S Rechargeable External Battery Slim Fit Bumper Case 2200 mAh Super Pack- AT&T, Sprint, Verizon (12 Month Warranty)(Black) Fully enclosed protective and rechargeable battery case for Apple iPhone 5. Input: 5V/700mAh max - charging of the battery pack, Output: 5V/1A - charging the phone from the battery pack, Capacity: 2200mAh Simultaneously charges the phone and battery pack. LED power indicator for battery power level, on-off power to control when to use the extra power. 4 year manufacturer's warranty provided by Kay's Technology.