BATTERY CONTROL SYSTEM AND SERVER

A battery control system includes: an acquisition unit configured to acquire either or both of reservation information indicating a reservation time for a charging facility configured to perform charging of a battery mounted on a vehicle and surrounding vehicle information indicating any surrounding vehicle located within a predetermined range including the charging facility; and a determination unit configured to determine, based on either or both of the reservation information and the surrounding vehicle information, whether a conflict of the charging is estimated to occur at the charging facility. The determination unit is configured to temporarily reduce a battery protection function when the conflict of the charging is estimated to occur. The battery protection function is a function to restrain degradation of the battery.