ELECTRIC STORAGE DEVICE, ELECTRIC VEHICLE, AND ELECTRIC POWER SYSTEM

Provided is an electric storage device including: an electric storage unit; a temperature measurement unit that detects the temperature of the electric storage unit; a current measurement unit that measures the charge/discharge current of the electric storage unit; and a safety evaluation unit that calculates the safety evaluation value of the electric storage unit, where the safety evaluation unit determines a temperature range to which the temperature detected by the temperature measurement unit belongs among multiple temperature ranges, and calculates a safety evaluation value, based on the temperature range as a result of the determination and an accumulated value of a value related to the charge/discharge time of the electric storage unit.