Patent ID: 7974795

Claim:
An electronic apparatus comprising: a discharge current detecting unit configured to detect a discharge current value of a battery; a battery voltage detecting unit configured to detect a voltage value of the battery when the battery is discharged; a temperature detecting unit configured to detect a temperature of the battery; a discharge power calculation unit configured to calculate a discharge power value on the basis of the discharge current value detected by the discharge current detecting unit and the voltage value detected by the battery voltage detecting unit; a determination unit configured to determine whether or not the discharge power value calculated by the discharge power calculation unit is smaller than a predetermined specified power value; a discharge efficiency calculation unit configured to calculate a discharge efficiency from the specified power value and the temperature detected by the temperature detecting unit when the determination unit determines that the calculated discharge power value is smaller than the specified power value, and to calculate a discharge efficiency from the calculated discharge power value and the temperature detected by the temperature detecting unit when the determination unit determines that the calculated discharge power value is greater than the specified power value; and a remaining capacity calculation unit configured to calculate a remaining capacity of the battery on the basis of the discharge efficiency calculated by the discharge efficiency calculation unit.