An electronic device includes a charging unit, a maintaining unit, and a control unit. The charging unit charges a battery device with power supplied from a power supply line of an external cable. The maintaining unit maintains a connected state to a predetermined voltage of a specific line of the external cable by using power supplied from the power supply line. The control unit controls the maintaining unit so that the connected state is maintained by the maintaining unit, in a case where the charging unit is charging the battery device with power supplied from the power supply line when the electronic device is set to a power-off state.