We are offering mobile cell phone battery. Specifications:battery cell: polymer li-ion batterycapacity: 5, 000mahinput: 5v, 1a (mini usb)dual usb output:usb 1: 5v, 1ausb 2: 5v, 2adimensions: 115 x 76 x 14mmfeatures:portable, rechargeable and universal backup battery for phone and tabletdual usb outputs, it can charge two devices at same timerefined aesthetic shape with clear elementequipped with li-polymer battery protective circuit, which can avoid over-charge, over-discharge and short-circuit