... protection for overcharge, over discharge, overloading Universal mobile phone laptop external battery pack Feature:1. High capacity: With high capacity ... , over discharge, overloading, and short circuit.Specification:Internal Battery type: Li-ion Capacity: 20000mAh(3.7V)/6600mAh(11 ... USB socket of the powerbank: iPad, iPhone, iPod, mobile phone, Bluetooth headset, MP3/MP4, video games consoles...3) ...