... designed for iPhone, portable back-up battery pack, lightwei Cold Light Battery Pack and AC Adaptor for iPhoneIntroduction:This product is ... PSP,MP4,cellphone,bluetooth earphone and so on)Built-in rechargeable lithium-ion battery(1200mAh), battery power sustainable for the ... prevent overheating, ventilation and shade in the battery pack charged.5. If the battery pack began to swell, and send a strong ...