Features & Functions: High capacity: 2200mAh, is equivalent to 3-5 times of the common digital batter Off-Line charging for your electric devices Compatible with the 5V cellphone adapter Rechargeable Lithium-Ion battery, up to more than 500 circles, after more than 500 circles, the power can still remain 80% Touch button for LED show the remain battery capacity Equipped with various connectors, applicable for the general cellphone, digital cemera,etc. Intellectual protection chip: protection for overcharge, overdischarge, overload and short circuit protection Specification: Dimension: 80*40*22 mm Weight: 70g Battery type: Lithium-ion battery Capacity: 2200mAh/8.1Wh Rated Input: USB-5V/1000mAh Rated output: USB-5V/700mAh Working Temperature: -10℃ - 50℃ Optional accessories: connecting cable, cellphone connectors, DC connectors, adaptor Charge Time: around 3hours Idle discharge: Less than 100uA