This external battery can charge three devices at the same time. It's big enough to charge a Mi 10 four and a half times.
Xiaomi Mi 50W 20000mAh Power Bank 3 Power Bank External Battery Charger 50W MAX flash charge, three-port output
Hbic Bankxiaomi Power Bank 3 30000mah - Quick Charge, Usb-c, 18w Max Output
Xiaomi Mi Power Bank 3 30000mAh announced with USB Type-C two-way fast charging
Mi Power Bank3 30000mAh - Global Telecom
Hbic Bankxiaomi Power Bank 3 30000mah - Quick Charge, Usb-c, 18w Max Output
Xiaomi launches Mi Power Bank 3 with 30,000 mAh battery; check price, other details - BusinessToday
Mi Power Bank 3: Xiaomi Mi Power bank 3 with 30,000 mAh battery launched - Times of India
Xiaomi Power Bank 3 30000mAh PB3018ZM 3 USB Type C 18W Fast Charging Portable Mi Fast
【High Capacity of 20000 mAh and 74Wh】High capacity of 20000 mAh; Enough capacity to fully charge four iPhones and still have power left. Built-in
Xiaomi 20000mAh Redmi Power Bank 74Wh 18W 3.6A Rapid Charging Dual USB Outputs for Two Devices at Once, microUSB & USB-C Input, Portable Travel
Xiaomi Mi Power Bank 3 - 30,000 mAh largest-ever powerbank released for $24
Hbic Bankxiaomi Power Bank 3 30000mah - Quick Charge, Usb-c, 18w Max Output
Mi Boost Pro Power Bank 30000mAh 18W, Mi Power bank 30000mah Unboxing And Review
Tegic Design Block 30 and Block 01 Power Banks Review (Hardware) - Official GBAtemp Review
Xiaomi launches the 30,000 mAh Mi Power Bank 3 for under US$25 - News