How to Clean a Car Battery Cable

Corrosion can build up on the battery cable of your car or light truck. You'll see this as a greenish material that resembles dried foam. Typically, this corrosion is from sulfuric acid that comes from your battery. This corrosion can build up a coating on your battery cable that will interfere with power being transmitted between the car's battery and its electrical components.

Tools and Materials

  • Baking soda
  • Clean water
  • Turkey baster
  • Rubber gloves
  • Safety glasses

Step 1 – Identify and Uncover Your Corroded Battery Cable

After putting on your rubber gloves and safety glasses, open the hood of your vehicle and locate your car's battery. Remove its protective cover. You may not see corrosion where the cable fits over the battery terminal, but it may be there under the cover.

Step 2 – Apply Baking Soda-Water Solution

In a small container, add 4 or 5 tablespoons of baking soda into a quart of water, and stir until the soda is dissolved. Use a turkey baster to slowly and carefully apply some of this solution to the area around your corroded battery cable and terminal. Continue adding the solution until it stops bubbling. Then rinse the solution and debris off the battery using clean water.