How to clean heavy battery corrosion and acid buildup
Vehicle battery corrosion is caused by a chemical reaction between battery acid and the terminal metal, often exacerbated by moisture and age. This buildup creates a barrier that blocks electrical current, preventing the car from starting or properly charging.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Clean with baking soda and water
- 2Use commercial battery cleaner and water
- 3Apply white lithium grease or corrosion inhibitor
- 4Use felt washers on battery posts
- 5clean the terminals and cable ends really well with a wire brush or some baking soda paste
In their words
Unedited, most upvoted first, each linked to the thread it came from.
Where this came up
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