... is designed for iPhone, portable back-up battery pack, lightwei Cold Light Battery Pack and AC Adaptor for iPhoneIntroduction:This ... battery pack can be used independently.With 1pcs USB output interface, you can switch to cable for charging external devices ... .(such as iPod,iPhone,iPad,DSi,PSP,MP4,cellphone,bluetooth earphone and so on)Built-in rechargeable lithium-ion battery(1200mAh), battery ...