10000mAh Li-Polymer Battery : Mi Power Bank comes with high-density advanced Li-polymer batteries that makes it more durable and optimizes charging efficiency. It can charge Redmi Go - 2 times, Redmi K20 - 1.4 times, iPhone 8 - 3.5 times & iPad Mini - 1 time 18W Fast Charging : The new Mi Power Bank 2i comes with a never heard before 18W Fast Charging. It supports 5V/2A, 9V/ 2A and 12V/1.5A charging outputs that ensures efficient and quick charging for your devices Stylish Aluminium Casing : Made using premium Aluminium Alloy with CNC Edge technology to give a perfect textured finish. The new 180° degree ergonomic design ensures a secure and comfortable hand-grip 9 Layers of Protection : Mi Power Bank comes with advanced level of chipset protection that ensures protection against short-circuit, over-current, over-voltage, over-charge & discharge, etc Dual USB Output with smart charging : Mi Power Bank 2i intelligently adjusts power output up to 18W to deliver fast and efficient charging for each connected device Two-way Quick Charge : The feature ensures faster charging for Power Bank and connected devices; Charging time: Approx 4.5 hours (18W charger, standard USB cable), Approx 6 hours ( 10W charger, standard USB cable) Universal Compatibility : Now charge not just mobiles but tablets, BT speakers, earphones, headsets, fitness bands etc