The majority of electric golf carts in the market operate on deep cycle battery systems. There are some exceptions to that as of late, but we’ll get into that later. Your batteries require periodic monitoring to ensure each one has plenty distilled water, and we recommend checking your water levels at least once every 3-4 weeks. The routine may vary depending on usage and time of year as warmer months tend to accelerate the evaporation process! Using anything other than distilled water will “contaminate” your batteries’ water. Foreign particles or minerals in other sources can attach to the metal plates inside your batteries. When this happens, it deteriorates battery health and reduces their effectiveness and life expectancy. Overfilling: It IS possible to overfill your batteries, and we advise our customers to fill batteries post-charge. During the charging process, the water inside the batteries boils, and if the reservoirs are full beforehand, it runs the risk of overflowing. This can cause your batteries to age prematurely, develop corrosion on and around the terminals and possibly damage the ground below the golf cart. Alternative Options: There are products available that regulate the water levels in your batteries, and it can make the process virtually hassle-free. Let us know if you would like more information, and we’ll be more than happy to help!