... 1,Capacity:2000mah~5000mAh/3.7V(lithium polymer battery)2, input voltage:5.5V>=0.5V; ... 500times6. color:white & black Feature:1.Long battery lifespan, more than 500-800 times recharge cycles.2 ... Auto power off, make better use of battery energy.4.Unique high-technology, provide overcharge protection, over-discharge ... is welcome.Welcome to our factory!! high quality for ipad 4 power bank from factory