Xiaomi 20000mAh Power Bank with Quick Charge 3.0 Price Specification. Xiaomi has unveiled a whooping new version of its 20000mAh Power Bank with two-way Quick Charge 3.0 Technology being the unique feature of the former model. The new 20000mAh Power Bank goes for around $21 or CNY 149, about 9000 Naira when paying in Dollar or […]