POWER SUPPLY CONTROL SYSTEM AND INDUSTRIAL VEHICLE

A power supply control system includes: a vehicle control device including a reception unit, an electrical connector, and a communication connector; connection determination units; and supply control units. The supply control units determine that the battery is the first battery and permits the power supply to the reception unit in a case where it is determined that the communication connector is connected and there is no power supply to the reception unit, determine that the battery is unknown and prohibits the power supply to the reception unit in a case where it is determined that the communication connector is not connected and there is no power supply to the reception unit, and determine that the battery is the second battery in a case where it is determined that the communication connector is not connected and there is power supply to the reception unit.