Does corrosion on car battery terminals mean the battery is bad Corrosion on car battery terminals does not necessarily mean the battery itself is bad, but it does indicate an issue that needs to be addressed. Corrosion can occur for a number of reasons: Electrolyte Leakage Causes Battery Terminal Corrosion Sometimes the battery can leak acid if there’s a gap between the plastic battery case and the battery post. The acid can cause corrosion on the terminals. Hydrogen Gas During Charging Can Cause Corrosion of Battery Terminals Batteries can release … Read More
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