... external battery for Iphone 1apply for: tablet iPhone,iPad,mobile phone, 2capacity:11000mA 1,Capacity:2000mah~12000mAh/3.7V(lithium polymer battery)2 ... products charging interface. Multi-Function,widely used for electronic applications.2. Long battery lifespan, more than 500-800 times ... safety.4.Auto power off, make better use of battery energy.5. unique high-technology, provide overcharge protection, ...