CELL CONTROL SYSTEM, CELL CONTROL DEVICE, CELL CONTROL METHOD, AND RECORDING MEDIUM

A battery control system for controlling operation of a part of a plurality of batteries connected to an electric power system includes: detection means that detects a battery characteristic of each of the plurality of batteries; selection means that selects, as candidates for an adjustment battery used to adjust power of the power system, batteries, each having a characteristic within a predetermined range of the battery characteristic, from the plurality of batteries, and selects the adjustment battery on the basis of a predetermined condition from the candidates for the adjustment battery; and control means that outputs, to the adjustment battery, an operation instruction instructing a charge or discharge operation.