... ipad,ipad2 Description:It is a rechargeable backup battery build in 3000mAh Polymer Lithium-ion battery. It offers you the full protection of ... light-weight, low-profile design.Specification:1) Battery capacity: 4500mA/3.7V (Polyma Lithium-ion battery)2) Compatible with all generations Apple 4G ... the button to indicate real power in battery case from 25%,50%,75%,100%7) Press the button for about two ...