What to do if your battery terminals are corroded?

Corrosion on battery terminals — a common issue that can disrupt your car’s electrical system. It reduces conductivity and makes engine starting difficult. This article explains how to remove corrosion and prevent it from forming again. To make your car look more stylish and stand out in traffic, you can also use tuning accessories available in our wide product catalog.

Why does corrosion appear?

White or greenish buildup on terminals occurs due to:

• Oxidation: Contact between metal, air, and moisture causes corrosion.
• Electrolyte leakage: Acid vapors from the battery react with the terminals.
• Poor connections: Loose terminals accelerate oxidation.

How to remove corrosion?

Follow these steps to clean the terminals:

• Disconnect the battery: Remove the negative terminal first, then the positive.
• Prepare a solution: Mix baking soda with water (1 tbsp per glass).
• Cleaning: Apply the solution with a brush or sponge to remove the buildup.
• Rinsing: Wash off residue with clean water and dry thoroughly.
• Protection: Apply a thin layer of technical petroleum jelly to the terminals.

Safety precautions

• Wear gloves to avoid contact with acid.
• Do not allow water to enter the battery.
• Ensure the terminals are tightly secured after cleaning.

How to prevent corrosion?

• Check the terminals every 3–6 months.
• Use protective caps or terminal grease.
• Monitor electrolyte level and battery sealing.

When to visit a service center?

• If corrosion appears frequently, have the battery checked for leaks.
• If engine starting issues persist after cleaning, consult a specialist.

Timely cleaning of terminals ensures stable battery and electronics performance.