... several major features.For iPhone 3G, iPhone 3GS, iPhone 4G, iPod,iPad1,iPad2.Battery head design with a car charger, battery ... USB output interface, you can switch to cable for charging external devices.(such as iPod,iPhone,iPad,DSi,PSP,MP4,cellphone,bluetooth ... of more security.With 1PCS USB to iPad/iPhone/iPod universal charge cable.Electrical parameters (car charger): Input Voltage: DC 12-24V ...