The Xiaomi Power bank??most of customers choice??more than 55??000??000 sold in the past three years.</br>Ultra-compact??14.1mm thin only??more comfortable and portable.Up to 93% conversion rate??optimized charging/discharging efficiency.</br>High-density lithium polymer batteries??high-speed two-way charging.With up to 18W fast charging?? it intelligently adjusts power output to safely charge each conne