good quality 5000mAh portable power bank for iphone/ipad high efficiency of power conversion long cycle life rapi super large capacity 20000mAh manual for power bank manual for power bank for iphone/ipad Specification: Cell type:polymer lithium ion batteryOutput voltage:5VOutput current:4400ma-5000maInput voltage:5VInput current:4400ma-5000maBattery capacity:5000mahProduct weight:160 kgProduct ...