Xiaomi Powerbank 20000. Over that it has 2 USB ports and power output of 51 V. In one sentence the bigger the better If you need battery lifego for the 20000 mah one.
The Mi QB822 is our favourite affordable power bank right now. The power bank that can charge your laptop. The ZMI PowerPack 20000 is a laptop friendly power bank with a USB hub function.
A 20000 mah one charges your phone more times then the other one.
It provides charging time of AC Adaptor Charging Charging time. 20000mAh Mi Power Bank 2C supports dual USB output without compromising on the size and performance. Xiaomi Powerbank 20000 mAh - 2 x Reversible USB Ports - Micro USB Charging Entry - 1 Quick Charge Port 30 - Xiaomi 20000 mAH portail battery. Now you can charge 2 devices simultaneously or extend your power with others in need.