Xiaomi has introduced the 20000mAh Mi Power Bank to join the 5000mAh, 10000mAh, 10400mAh and the 16000mAh ones. It will make its debut at the company’s “Double 11″ sales which will go down in China starting November 11th for a price tag CNY 149 ($24 / NGN 4668). The 20000mAh Mi Power Bank comes with […]