... 2,Output: 5V/750mA 3,Certificate: CE,RoHs,FCC 4,Black/white color Producte detail: Specification of battery case Model lo-c50 Size 126mm*62mm ... Function Short Circuit,Over Current,Over Charging, Discharging Over Charging For For IPhone 4G Cycle Time Over 500 Times Working Temperature -20 to ... Degree Color Black/White/Colorful Frame 2011 hot sell/portable backup battery case for iPhone 4