cheero Power Plus DANBOARD Version -Plate- 4200mAh - Retail Packaging - Light Brown The capacity equal to iPhone's 2 charges *. Fast charging from 2.1A output port. With an ultra-slim size, this charger still can charge iPhone fully up to 2 times, pretty enough when you are on the go. It can charge not only iPhones and smartphones, but also iPads and other tablets quickly from 2.1A output port. (* ) Based on iPhone 5s battery capacity = 1500mAh