Storage battery state grasping method, state grasping system, and computer program

摘要

The stationary storage battery state grasping method includes (a1) storing the operation history data of the storage battery, and (a2) completely discharging the storage battery and charging the amount of charge until full charge every predetermined period. A step of updating data of the full charge amount of the storage battery by measuring with the measurement device; and (a3) from the operation history data and the updated charge amount data of the storage battery, And estimating a chargeable capacity.