FAST CHARGING METHOD, POWER ADAPTER AND MOBILE TERMINAL

The present disclosure provides a fast charging method, a power adapter, and a mobile terminal. The method includes: transmitting, by the power adapter, clock signal to the mobile terminal via a first data line of the USB interface during a process of that the power adapter is coupled to the mobile terminal, wherein the clock signal is used for indicating a communication sequence between the power adapter and the mobile terminal; conducting, by the power adapter, a bidirectional communication with the mobile terminal via a second data line of the USB interface under control of the communication sequence, so as to determine to charge the mobile terminal in the fast charging mode; and adjusting, by the power adapter, charging current to the charging current corresponding to the fast charging mode to charge the mobile terminal. The present disclosure enhances the security of the fast charging process.