Specification Battery Type: Lithium-Ion Battery Capacity: 2800mAh USB Input: 5V 1A (Built-in) Micro-USB 5-Pin Output: 5V 1A (Built-in) Compact design with build-in Micro-USB output plug, frees you from carrying any extra cable when you"re on the go; build-in USB input allows you recharge the battery directly from your PC/notebook. Build-in capacity 2800mAh external battery.LED power level indicator. Integrated microchip prevents overcharging Warranty All EZOPower(TM) items are covered by one-year limited warranty that guarantees all products to be free of defects in material and workmanship for a period of one year from the date of purchase.