Battery Cell

the simplest operating unit in a storage battery. It consists of one or more positive electrodes or plates, an electrolyte that permits ionic conduction, one or more negative electrodes or plates, separators between plates of opposite polarity, and a container for all the above. A lead acid cell produces about 2.12 volts and a 12-volt battery uses six of these cells and fully charged measures about 12.72 volts.