System, apparatus, and method of performing charging operation in host mode

A system, an apparatus, and a method of performing a charging operation in a host mode, which can perform a charging operation in a host mode of a terminal. The system includes a terminal for simultaneously receiving a function of performing communication with a peripheral device and a charging function from an external accessory connected in the host mode. The external accessory simultaneously provides the charging function while performing the communication with the peripheral device to the terminal in a client mode.