MiPower Bank is a battery charger with a built-in external battery. The charger is built with an aluminium case, and includes batteries rated at 5200/10400/16000mAh. Through the use of a USB cable, it can be used to charge any device that supports USB charging, including Apple iPhones, iPads, Android smartphones/tablets and more. While the 5200/10400mAh comes with a single USB port, the 16000mAh comes with dual USB ports, Xiaomi also released silicone casings for the 10400mAh battery bank.