*4.5A Output: Highest output in the market, featuring a 4.5A total output capable of simultaneously charging 2 tablets, making it faster and more powerful than the rest.*iSmart Technology: Charge faster and smarter than others, automatically detects and delivers the optimal charging current for any connected device- ensuring the fastest and most efficient charge.*Huge capacity: 16000mAh charges an iPhone 6 almost 6 times, a Galaxy S6 almost 4 times or an iPad Air once.Safely recharges with a 2 amp or higher output charger (most phone chargers have only 1 amp).*Design: Smooth, ebony varnish allows you to power up in style, while 4 status LEDs keep you informed of remaining capacity. Built-in flashlight for dark or low-light environments.*Safety Protection: Ultra reliable A Lithium-Ion battery with over 500 battery charge cycles; Security protection design: short-circuit and over-current protection. This battery pack will automatic shutdown if a short circuit or overload output occurred while unit is charging.Product Description:*iSmart Charging Port: Compatibility maximized.Not all charging ports are created equal. Standard ports only communicate effectively with particular devices, like Apple OR Android, often limiting their recharge rate. But with iSmart technology, each port intelligently identifies your device to speak its unique charging language. So plug in any brand or model and enjoy compatibility that doesn't limit your charging speed*Full Speed ChargingOur 5V RAVPower battery charger has 2 USB ports (2.1A max and 2.4A max) to allow for multiple device charges. You can rapidly charge your two tablets at the same time.*DesignWe always strive to keep our battery packs looking sleek and made from the highest quality parts. Our RAVPower 16750mAh is offered with a black matte finish that is fingerprint and light scratch proof. And, lastly, it has a full functioning flashlight for those times when you are stumbling in the dark!Specification:Capacity: 16750mAhInput: DC 5V/2A (Standard Micro USB Port)USB A1:5V/2.4A max , USB A2:5V/2.1A maxProduct Dimensions:5 x 3.1 x 0.8 inches Package Included:- 1 RAVPower RP-PB19 PowerBank- 2 USB to Micro USB cables