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Battery Construction: Notes

The battery used in the MINI is made of a plastic case containing alternating plates of Lead and Lead Dioxide (or Lead Oxide) separated by insulators.

These alternating plates are connected in series to produce a voltage of 12.6 volts, or about 2.1 volts for each set of Lead and Lead Dioxide plates. The negative terminal is connected to a Lead Dioxide plate and the positive terminal to a Lead plate.

Fig 1: Battery Series Voltage
G04730478Courtesy of BMW OF NORTH AMERICA, INC.
Fig 2: Section View Of Battery
G04730479Courtesy of BMW OF NORTH AMERICA, INC.
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