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A type of voltaic cell or battery that can be recharged by passing a current through it from an external d.c. supply. The charging current, which is passed in the opposite direction to that in which the cell supplies current, reverses the chemical reactions in the cell. The common types are the lead-acid accumulator and the nickel-iron and nickel-cadmium accumulators. See also sodium-sulphur cell.

Subjects: Chemistry — Physics.

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