A battery degradation degree estimation device includes a total degradation degree detection unit 110 configured to detect a present total degradation degree of a battery, a cycle degradation estimation unit 120 configured to estimate a future cycle degradation degree due to charge/discharge of the battery, a storage degradation estimation unit 130 configured to estimate a future storage degradation degree over time inside the battery, and a battery degradation estimation unit 140 configured to estimate a future battery degradation degree on the basis of the present total degradation degree, the future cycle degradation degree and the future storage degradation degree.
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