'Exide double life' car battery, c 1920s.

'Exide double life' car battery, c 1920s.
3 4 c m
actual image size: 32cm x 26cm


These rechargeable, lead-acid batteries are known as accumulators. Each cell consists of two lead plates, or electrodes, separated by sulphuric acid. As the battery is charged, lead oxide forms on one of the plates, storing the incoming electrical energy in chemical form. Part sectioned.

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© Science Museum / Science & Society Picture Library

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