| 摘要 |
PROBLEM TO BE SOLVED: To dissolve a risk of bringing a secondary battery into dangerous condition and also to raise the utilization factor and availability factor of a facility enough. SOLUTION: It is judged whether the capacity drop of a secondary battery is caused by the abnormality of the secondary battery or not, and if it is caused by the abnormality of the secondary battery, only the imperfect charge is performed to check the occurrence of danger.
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