What is the correct product to use when refilling battery cells?

Using distilled water to refill battery cells is essential because it helps maintain the proper electrolyte balance without introducing impurities. Distilled water is free from minerals and contaminants that can alter the chemical composition of the electrolyte solution, which is crucial for the optimal functioning and longevity of the battery.

In contrast, hydrochloric acid is not appropriate for this application, as it could significantly damage the battery and compromise its effectiveness. Mineral water contains minerals that could lead to the buildup of deposits inside the battery, hindering its performance. Tap water often contains chlorine and other substances that can also contaminate the electrolyte and negatively impact the battery’s function. Thus, distilled water is the only suitable option for maintaining the health of battery cells, as it preserves the integrity of the chemical reactions that occur within.