CHARGE AND DISCHARGE CONTROL DEVICE AND CHARGE AND DISCHARGE CONTROL METHOD

A charge and discharge control device includes a storage charge level determining unit that selects one range from a first charge level range lower than a second charge level range and a third charge level range higher than the second charge level range, and determines a charge level at storage during which charge and discharge of a battery are not performed, the second charge level range being a range of charge level including a maximum value of storage degradation, the storage degradation being degradation of the battery over time; and a charge and discharge control unit that controls charge and discharge of the battery on the basis of the charge level at storage.