t's better to have a choiceThe 20,000-mAh Redmi Fast Charge Power Bank has two input ports, a USB-C and a Micro-USB port, making it fully compatible with standard Android device cables* and ensuring fast charging of the power bank itself.Lithium-ion polymer batterySuitable for charging various devicesThe high-density lithium-ion polymer battery provides lasting and reliable battery life for devices such as phones, tablets and digital cameras, so you can recharge wherever you are — in the office or on the go.High-quality IC chipAdded protection and enhanced safetyThe high-precision resistance, inductance and capacitance components and advanced circuit chips can easily withstand overcharging, over-discharging, overheating, short-circuits and other faults, offering reliable protection for both the power bank and devices. Multiple protective features mean enhanced safety for everyday use.