The Mi Power Bank 20000mAh 50W is the fastest and most versatile power bank to date. This power bank can charge laptops that support Power Delivery at 45W, charge mobile devices with a maximum output of 50W, and fully recharge its high-capacity 20000mAh battery in just 3 hours and 50 minutes at a maximum of 45W. The power bank features a triple output port and a Type-C input port with two-way fast charging, without compromising the number of devices that can be charged.