How to Clean a Car Battery

by | Mar 1, 2023 | Car Care | 0 comments

Now that you’ve determined your cause, let’s get to work. Battery acid is involved in this simple process, so you should take the proper precautions for your safety. This includes wearing appropriate rubber gloves and eye protection.

Here’s What You Need to Clean Your Battery:

  • Baking soda
  • Petroleum jelly
  • Anti-rust pad
  • A stiff bristle brush, wire brush, or professional tool
  • Water
  • Protective gear
  • Shop towels

Once you have gathered your materials, you are ready to begin. 

If your car battery is in need of a good cleaning, the following steps will guide you so you can do the job yourself and ensure it is spotless!

  • The first and foremost thing you should do to avoid any injury and eliminate any risk is to turn off your engine. The engine must be completely shut off so you can work safely with peace of mind. You don’t want to take any chances, no matter how straightforward the task is.
  • Once that step is complete, you will need to use a wrench to loosen the nut that holds your negative cable in place, allowing you to separate the cable from its pole. Follow the exact same steps to loosen the positive cable.
  • At this stage, you should stop and inspect your car battery for cracks. If you notice any, it’s a sign that your car battery has a bigger problem, and cleaning alone won’t solve it. A complete replacement will most likely be needed.
  • Also, inspect the cables and clamps. If you see wear and tear, that’s also a sign that replacement is needed.
  • Once you have completed a thorough visual inspection and confirmed that there are no signs of damage, you can begin mixing your cleaning solution by adding one teaspoon of baking soda to one cup of water.
  • Take a toothbrush and use it to scrub off any visible corrosion on the battery terminals. Get in there and scrub as much as necessary to get it completely clean. You may need to dip and soak your toothbrush in the mixture several times throughout the process.
  • Once the scrubbing is done, use a spray bottle with cool water to wash off any residue. You want to make sure all the baking soda is washed away and no rust remains. Once you’ve confirmed that there’s no residue left, take an old towel and pat the battery down until it’s completely dry.
  • The last step is to use a small portion of petroleum jelly to help lubricate the terminal before reconnecting the terminal.


Keeping a car battery free of corrosion is important to keep the car in good working condition. Thankfully, the process of cleaning car battery corrosion is very easy. It only needs a few simple steps and a little care.

Did this blog help you deal with your car battery corrosion problem? If so, maybe you can also share this article to help other car owners. If you have queries in mind, feel free to post them in the comments.

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