What is used of distal water?

Answer 1

Distilled water is the preferred liquid to refill automotive batteries that have been in service a while. While some batteries are sealed tops and cannot be serviced, there are still some batteries with accessible cells. Use distilled water in a proper battery service dispenser to avoid overfilling. Distilled water is preferred because it lacks the chemicals and impurities found in ordinary tap water that can shorten a battery's life. Sulphuric acid should never be added to a battery that has already been placed in service. The pH level of the acid is too high for anything other than a brand new virgin battery. And as always, safety first! Gloves, goggles and apron.