5200mah Portable Battery

5200 mAh Portable Battery Charger. Designed for Smartphones and Tablets. Built in 5200mAh rechargeable lithium ion battery. LED display to indicate exact battery level percentage. Auto turn on to charge and auto shut off to save battery life. 2.1 max output, quickly and fully charges all iPhone models twice. Compact design for maximum portability . Compatible with iPad/tablets, iPhone/smartphones and most USB powered devices.