Mi 13 supports two fast Charge protocols, PD (Power Delivery) and QC (Quick Charge). PD protocol can realize the adjustment of voltage and current in the vertical direction, so that the device can be charged at high speed under different powers, while ensuring the safety of the battery. The QC protocol is able to charge devices quickly, but requires a relatively low battery life. Therefore, Mi 13 users can choose the right fast charge agreement according to their needs, in order to charge fast while guaranteeing battery life.