Clean Corroded Car Battery Terminals With Coke

If you ever find yourself with a car that won't start because of corroded battery terminals, you can get yourself going again with just a can of Coca-Cola.

I'm from the US south, where we know that Coke is magical stuff, and I've used this trick several times myself over the years without scrubbing the terminals afterwards. Perhaps it's the acidity level, but more likely it's just the foaming action. I have also tried water and it didn't so so well if you didn't also use a brush to scrub the corrosion away. Other soft drinks, or soft drinks that have gone flat, also don't seem to work as well.

If your terminals continue to corrode easily, you should probably get that checked out. It may be time for a new battery or you may be able to protect those terminals against corrosion. But if you're stuck somewhere, a can of Coke may just get you back on the road.

How to Clean Battery Terminals With Coke [HowToDoYourself]


    Don't use Coke. Use bicarbonate of soda (baking powder) in water. It neutralises the battery acid and dissolves corrosion instantly.

    Last edited 18/05/15 7:30 am

      Yeah I agree. Coke is really not good idea. If you have access to boiling water at the time use that to tip over the terminals.
      Pick up some battery terminal spray next time you are near an auto shop. Do the boiling water again then apply the spray.

    or you can buy one of these

    Yep... Coke only work as it is a liquid. Water will work just the same.

    Bi carb with warm water is what I was taught to use (as a mechanic).

    i believe in the first or second episode of mythbusters the guys actually covered this and busted it.

    Oh that's right I forgot, anything that was done 10+ years ago doesn't count these days!

    we used to use this when i worked at Battery World.
    followed up by boiling water to wash it off. and then followed up by the brush mentioned above.
    we used to tell people if they wanted to do it them selves to make a paste out of bicarb soda and smear that on and let it sit for a few minutes then was of with boiling water.

    then before we would put the terminal on, we would put these on (should only be about $3 a pair)

    they were a felt like washer with a neutralising agent in them that would barrier the terminal from the base of the post where it came out of the battery, which is usually where corrosion would originate from in the seam of the plastic battery casing and the lead battery post.

    the anti corrosion sprays you see about arent that great because
    a) it can seep down between the terminal and the post before setting hard causing a not so good connection.
    b) ive seen countless cases of where corrosion would be built up even though the spray was used.

    I just don't see how a white powder will clean the terminals.... It's also not an cost efficient option... but only the best for my Civic.

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