... is designed for iPhone, portable back-up battery pack, lightwei Cold Light Battery Pack and AC Adaptor for iPhoneIntroduction:This product is ... ,bluetooth earphone and so on)Built-in rechargeable lithium-ion battery(1200mAh), battery power sustainable for the iPhone.With 1PCS ... , or cut with a sharp object, designated battery pack.2. Keep the battery pack away from heat, fire place, and avoid direct ...