2A Charger Included: Recharge to full capacity in 10 hour with RAVPower 2A USB charging adapter included Impressive 16750mAh Capacity: Housing enough power to provide 5.5 charges for iPhone 7, 3.5 charges for Samsung S7, or 1 charge for iPad Air, the battery back is the must have for your next party or journey. Stay powered, stay in the game. Powerful 4.5A Output and 2A Input: Dual iSmart 2.0 USB ports charge your phone and tablet simultaneously at an optimized charging speed. And benefit from the twice as fast 2A input to cut your recharging time by half. A full recharge takes about 9 to 10 hours with a DC 5V/2A charger, while 16 to 17 hours via a 1A charger. Designed for Accessibility: Press the Power Button once to check the battery status with 4 intuitive LED indicators, click twice to conveniently light up the dark with the built-in flashlight eliable A+ Lithium-Ion Battery: Durable A+ 18650 battery endures over 500 charge cycles guarded with voltage surge and overload protections