Provided is a charge control system capable of reducing costs for reuse of a battery module. The charge control system includes a charger, a plurality of IPUs, and a CAN bus, and each IPU includes a battery, a contactor, and a battery ECU. Based on operation information provided via the CAN bus, the battery ECU causes the contactor of one IPU from among the plurality of IPUs to provide power supply to the battery belonging to the one IPU and causes the contactor of a rest of the IPUs to disconnect power supply to the battery belonging to the rest of the IPUs, thereby performing control such that the charger charges the battery belonging to the one IPU without concurrently charging the battery belonging to the rest of the IPUs.