The all-new Mi power bank 3i 20000mAh is a portable powerhouse that comes with 18W fast charging that ensures that your devices charge quickly and you can be on the move. The Power bank features Triple port output and Dual port input (Micro-USB/Type-C) with two-way fast charging without compromising on the size and quality. Mi Power Bank 3i 20000mAh supports Power Delivery and offers advanced 12 layers of chip protection. It also comes with smart power management which allows you to safely charge low power devices such as Bluetooth headsets, Fitness bands, etc. All you need to do is simply double press the power button to enter 2-hour low power charging mode.