A battery consists of one or more electrochemical cells, electrically connected in an appropriate series/parallel arrangement to provide the required operating voltage and current levels, including, if any, monitors, controls and other ancillary components (e.g. fuses, diodes), case, terminals and markings. (Although much less popular, in some publications, the term "battery" is considered to contain two or more cells.) Popular usage considers the "battery" and not the "cell" to be the product that is sold or provided to the "user."

The term " cell" will be used when describing the cell component of the battery and its chemistry. The term " battery" will be used when presenting performance characteristics, etc. of the product. Most often, the electrical data is presented on the basis of a single-cell battery. The performance of a multicell battery will usually be different than the performance of the individual cells or a single-cell battery

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