... input is 5v/1a SpecificationsBattery:Li-polymerCapacity: 5200mAh/3.7vInput:5.3v+0.2/1.0AOutput: 5. ... 18(T)mmWeight:135gFeature:1.External battery for IPhone,IPod,ipad,high capacity.2.Compatible with all mobile ... to use ,high performance at reasonable cost 4.3 Led indicators shows the real-time capacity.one indicator ... usable fashion travelling external battery for IPhone,IPod,ipad,high capacity 5200mAh ...