Provided are a charge/discharge control circuit capable of using an FET having a low withstand voltage, and a battery device including the same. The charge/discharge control circuit is configured to control charging and discharging of a secondary cell, and includes: a positive power supply terminal and a negative power supply terminal for monitoring a voltage of the secondary cell; a charge control terminal configured to connect to a gate of a charge control FET, the charge control FET being connected to an external negative terminal to which a negative electrode of a load or a charger is connected; and a clamp circuit configured to clamp a signal at a high level for turning on the charge control FET to a voltage that is higher than a reference voltage by a predetermined voltage, with thereference voltage being a voltage at the external negative terminal, and the signal being output to the charge control terminal.