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Wear safety gloves and glasses. Unplug your golf cart and check the vent caps. Mix equal amounts of baking soda and water. Brush the mixture onto the battery terminals. Rinse and dry the batteries with clean cloths. Spray an anti-corrosive onto the battery terminals and clamps.

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Acid leaks out of batteries over time, collecting on the terminals. Take safety precautions to avoid coming into contact with it. Wear long clothing and put away any jewelry as well. You do not need to unhook the batteries, but you do need to make sure electricity isn’t flowing to them. Turn off the golf cart and unplug the charger. Then, push against the vent caps on the batteries to make sure they are tightly in place. Leave the vent caps in place to avoid letting any chemicals get into the batteries. Baking soda is a very effective natural cleaner that also happens to neutralize acid. Get a clean mixing container. Pour the 2 ingredients in, then stir them into a paste. For example, you can start by mixing 1 oz (28 g) of baking soda into 1  fl oz (30 mL) of water. Make more as needed. Dip a clean cloth into the mixture and wipe it over the acid. The type of cloth doesn’t matter. If you have an old toothbrush, you can also use it to spread the mixture and scrub it into the acid. The mixture is primarily meant to polish the terminals and connectors, but you can use it to wash off the rest of the battery. Lightly dampen a clean cloth in lukewarm water. Wipe down all of the areas coated with the baking soda mixture. Follow up by using another clean cloth to absorb any remaining water.  The metal components should look bright again. If they aren’t, you probably missed some of the corrosion. Repeat the steps to clean it off. Make sure you also get any water that has dripped or spilled around the batteries. You can purchase a battery anti-corrosive spray online or from auto parts stores. Coat the terminals and the metal connectors on the battery cables every time you clean off the batteries. A regular anti-corrosive application after cleaning ensures your battery lasts as long as possible.  If you need more space to work with, detach the cables from the terminals. This way, you can easily reach both parts. You can also use petroleum jelly or a silicone gel instead of the anti-corrosive spray. Ideally, clean the batteries off once a month. Doing this can make your batteries last up to 3 years longer than normal.