Fremo 20000mAh LCD Display Dual USB Port 3.5A External Power Bank Battery Pack for iPhone,Samsung Galaxy,Tablets Compatible with most smartphone,tablets and USB-charged devices,Built-in flashlight ABS and PC casing with Grade-A battery cell and premium microchip The LED screen indicates current status and offers information of voltage,current,consumed time and battery level Provides full-speed charges up to 5.1V/3.5A to all USB enabled devices,input is up to 5.1V/2.5A to have the fast recharing time Built-in short-circuit,over-charge,and temperature protection