... battery 2)Capacity: 2200mAh 3)Portable, rechargeable and universal power 4)Adopts advanced single-chip Specifications:Battery type: 18650 ... overcharge, over discharge, overloading, and short circuit. The mobile power pack fits for mobile phone, Mobile phone, MP3/MP4, PSP, ... over-charge, -current, short-circuit Adopts advanced single-chip Power bank could charge smartphone, Sony's PlayStation PSP, MP4 ...