| 摘要 |
There is provided a battery system having a plurality of storage batteries capable of charging and discharging, and at least two or more of the storage batteries are connected in series. The battery system includes a connecting terminal capable of connecting a storage battery in parallel with any one of the other storage batteries. The battery system is capable of replacing the storage battery without restricting the configuration to be serial connection or parallel connection, while avoiding decline of the output power.
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