battery case for iphone 3GS, case for iphone,protectional case for iphone 3G,Leather Case for iPhone 3GS battery case for iphone 3G, case for iphone,protectional case for iphone 3G,Leather Case for iPhone 3GS TECHNICAL DATA1. Input Voltage: DC4.5V ... 2000mAh Li-polymer battery, you can enjoy playing your IPHONE, IPHONE 3G, IPOD TOUCH.3.When you are answering the phone ,there is no need for ...