Battery control system

A battery that supplies power to an electrical load mounted on a vehicle, an information acquisition device that acquires the number of times a specific discharge has occurred from the battery and the time the vehicle has been used, and a specific discharge of the battery acquired by the information acquisition device. This battery control system includes a battery deterioration determination device that determines whether the battery is in a deterioration state due to grid corrosion or in a deterioration state due to active material softening based on the number of times and vehicle usage time.