Why is distilled water added to the electrolyte of lead accumulator?

Question: Why is distilled water added to the electrolyte of lead accumulator?

Distilled water is added to the electrolyte of lead-acid batteries because it helps to maintain the appropriate concentration of sulfuric acid in the electrolyte. The electrolyte is a mixture of sulfuric acid and water, and as the battery operates, the water in the electrolyte evaporates, causing the concentration of acid to increase. If the concentration of acid becomes too high, it can cause damage to the battery's internal components. By adding distilled water to the electrolyte, the concentration of acid can be kept within the appropriate range, ensuring optimal battery performance and longevity.

 

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