2200mah external battery charger for smart phone 1.Universal for all smartphones 2.Portable,power you on ... ultra slim Power tube exteral batterySpecification:1.Capacity:2200 2.Output: 0.8A Input:0.5A 3.Size:21*21*95mm ... smart cells,including HTC,SAMSUNG,SONY,IPHONE etc. Universal usb Portable Backup Battery Features1)High Quality , High Transfer Efficiency2)Over Current and ...