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

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

© Science Museum / Science & Society Picture Library


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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