What is the proper procedure for cleaning and reconnecting my golf carts battery cables and other electrical connectors?

by Dillon Winoker February 22, 2025

Cleaning and reconnecting battery cables and electrical connectors is an important part of maintaining your golf cart’s electrical system. Here's the proper procedure:

1. Turn Off Power and Disconnect Battery

Safety first: Ensure the key is off, and disconnect the negative (-) battery cable first to prevent sparks or electrical shorts.
Disconnect the positive (+) cable afterward.

2. Inspect the Battery and Connectors

Check for corrosion: Look for any signs of corrosion (white, green, or blue deposits) on the battery terminals and connectors.
Inspect cables: Ensure that the cables are in good condition without any fraying or exposed wires.

3. Clean the Battery Terminals

Use a cleaning solution: Mix a solution of baking soda and water (about 1 tablespoon of baking soda per cup of water). This will neutralize the acid buildup and clean the terminals.
Apply the solution: Dip a wire brush or a toothbrush into the solution and scrub the battery terminals and the cable connectors to remove corrosion. Be sure to scrub both the battery post and the inside of the cable connector.
Rinse: Use clean water to rinse off any remaining solution and corrosion.
Dry thoroughly: Wipe down the battery and terminals with a clean cloth to ensure everything is dry before reconnecting.

4. Clean the Battery Cables and Connectors

Check for corrosion or damage: If the cables have corrosion buildup, it can cause poor connections. Clean the connectors as you did with the battery terminals, using the baking soda solution.
Use a wire brush or abrasive pad to clean off any corrosion on the cable terminals and the battery posts.
For stubborn corrosion: If the corrosion is severe, you may need to use a terminal cleaning tool to clean the inside of the cable connectors.

5. Inspect and Clean Other Electrical Connectors

Examine all connectors: Look at all electrical connectors in the system, such as those to the solenoid, motor, and controller. These connectors can also corrode over time.
Clean with contact cleaner: Spray electrical contact cleaner or isopropyl alcohol on the connectors and wipe them clean with a lint-free cloth. This will help remove dirt, corrosion, and moisture.
Use a brush for difficult areas: A small brush can help clean tight spots around connectors, especially on the motor or controller connections.

6. Apply Protective Coating (Optional)

Anti-corrosion spray: After cleaning, you can apply a light coating of anti-corrosion spray (such as a battery terminal protector) to the battery terminals to prevent future corrosion.
Petroleum jelly or grease: Apply a small amount of petroleum jelly or dielectric grease to the battery terminals and cable connectors. This creates a protective barrier against moisture and corrosion.

7. Reconnect Battery Cables

Reconnect the positive (+) cable first: Start by reconnecting the positive cable to the positive terminal on the battery.
Reconnect the negative (-) cable: Attach the negative cable to the negative terminal on the battery. Tighten the connections securely but don’t over-tighten, which could damage the terminals or cables.

8. Test Connections

Check tightness: Ensure the connections are secure and that there is no movement when you tug gently on the cables.
Test the system: Turn the key on and test your golf cart to ensure everything is functioning properly.

9. Dispose of Waste Properly

Dispose of any materials (old rags, gloves, cleaning solution) safely and responsibly.

By following this procedure, you can maintain good electrical connections, reduce the risk of corrosion, and ensure your golf cart's electrical system runs smoothly.