How to Clean Battery Corrosion





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Cleaning battery corrosion is an important maintenance task that helps prolong the life and performance of our electronic devices. When faced with this pesky problem, I always make sure to tackle it promptly and safely.

First, I gather the necessary materials: a pair of gloves, safety glasses, baking soda, an old toothbrush, and some cotton swabs. To begin the cleaning process, I carefully remove the corroded batteries from the device, taking care not to touch the corrosion with my bare hands.

Then, I mix a small amount of baking soda with water to create a paste-like consistency.

Using the toothbrush, I gently scrub away the corrosion, making sure to cover every nook and cranny. After that, I dip the cotton swabs in the baking soda solution and thoroughly clean the battery compartment, removing any remaining residue.

Finally, I dry everything off with a clean cloth and ensure the area is completely dry before inserting new batteries. By following these steps, I can bid farewell to battery corrosion, ensuring optimal performance and increasing the lifespan of my electronic devices.




  • Wear protective gloves and safety glasses
  • Disconnect the battery and remove it from the device
  • Mix a solution of baking soda and water
  • Use a toothbrush or small brush to scrub away the corrosion
  • Clean the battery terminals and connectors with the baking soda solution





  • Don’t touch the corrosion with bare hands
  • Don’t use excessive force when scrubbing
  • Don’t allow the baking soda solution to enter the battery
  • Don’t use metal objects to clean the battery
  • Don’t reconnect the battery without ensuring it is completely dry


Step 1



Clean the affected area with a mixture of baking soda and water. Use a toothbrush to scrub off the corrosion gently.




Step 2



Rinse the area with clean water to remove any remaining residue from the baking soda mixture.




Step 3



Create a paste using equal parts water and baking soda. Apply the paste to the affected areas and scrub gently with a toothbrush.




Step 4



Wipe off the paste with a clean cloth or paper towel. Ensure that all residue is removed.




Step 5



Apply a corrosion inhibitor or petroleum jelly to the cleaned battery terminals to prevent future corrosion.




Final thoughts 💭

If you notice battery corrosion, it’s important to take action to prevent further damage and ensure the proper functioning of your electronic devices. To clean battery corrosion, start by removing the corroded batteries from the device and wearing protective gloves. Mix a solution of baking soda and water, dip a clean cloth or cotton swab in the mixture, and gently scrub the corroded area. Use a toothbrush or another small brush to clean hard-to-reach spots. Afterward, use a damp cloth to remove any residue and dry the area thoroughly. Finally, insert fresh batteries into the device and check for proper functioning. Remember to dispose of the old batteries properly. Regularly checking and cleaning battery contacts can help extend the lifespan of your electronic devices.


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