KAYSCASE Power2500 Battery Cover Case for Apple new iPhone 5 / iPhone 5S Charge and Sync with Lightning Port One Year Warranty (White) Fully enclosed protective and rechargeable battery case for Apple iPhone 5. Input: 5V/500mAh max - charging of the battery pack, Output: 5V/500mA - charging the phone from the battery pack, Capacity: 2500mAh 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. One year manufacturer's warranty provided by Kay's Technology.