| 摘要 |
The battery pack that recognizes operation voltage of a corresponding device according to a unique resistance of the connected device and sensed through a third external terminal of the battery pack, the battery pack having a plurality of cells that can be coupled in series or in parallel to be suitable for an operation voltage of the corresponding device. The battery pack can be sold to a consumer to enable the consumer to power a variety of different electrical appliances. Alternatively, the battery pack can be incorporated into a chassis of an electrical apparatus so that the battery pack can be sold to many different manufacturers of electrical appliances.
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