What''s the Best Water to Acid Ratio for a Lead-Acid Battery?
Adding too much water can dilute the acid, while too little water can damage the battery. The ideal water-to-acid ratio is typically between 1.2 and 2.4 liters of water per liter of battery capacity. The most common ratio is 1.5 liters of water per liter of battery capacity. However, the ratio may vary based on the battery type and usage.