Mi 10000mAH Li-Polymer Power Bank Best in quality, Low Price 10000mAH lithium-polymer battery, Mi Bluetooth Headset – 0.06 A and Mi Band – 0.025 A Dual USB Output, Two- way Quick Charge, Input limit:: 4.4V ; Working temperature: 0℃ ~ 45℃ ; Charging time: 4.2 hours ( 18W charger, standard USB cable ), 6.2 hours ( 10W charger, standard USB cable ) Compatible with 5V/2A, 9V/ 2A and 12V/1.5A charging, Mi Power Bank 2 intelligently adjusts power output up to 18W to deliver fast and efficient charging for each connected device Material: Aluminium Alloy + CNC Edge Lithium Polymer Battery makes it more durable and optimises charging efficiency Mi A1: 2.2 Full Charge and iPhone 7 : 3.5 Full Charge TO BUY CLICK HERE