Why distilled water is periodically added to storage cells Why is distilled water used?

Distilled water is periodically added to storage cells, such as lead-acid batteries, to maintain the electrolyte level and ensure efficient operation. It is used because it is free from impurities and minerals that could contaminate the electrolyte, potentially affecting the battery's performance and lifespan. Using distilled water helps prevent corrosion and deposits that could hinder the chemical reactions necessary for the battery to function properly.