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Why is my car battery sticky?

Published in Car Battery Maintenance 2 mins read

The stickiness on your car battery is likely due to corrosion caused by a chemical reaction.

Understanding Battery Corrosion

Battery corrosion manifests as a sticky or crusty substance, typically white, blue, or green, found around the battery terminals. This is not just dirt; it's a chemical byproduct.

The Chemistry Behind the Stickiness

  • Sulfuric Acid Reaction: The sulfuric acid inside your car battery reacts with the metal components of the terminals (Reference: 06-Oct-2024).
  • Hydrogen Gas Release: As the battery heats and cools, it releases hydrogen gas. This gas interacts with the surrounding materials, forming the corrosive residue. (Reference: 06-Oct-2024).

Identifying the Sticky Substance

Feature Description
Color Typically white, blue, or green.
Texture Can be crusty, powdery, or sticky depending on the severity and environmental conditions.
Location Primarily found on and around the battery terminals, but can spread to nearby components in severe cases.

Steps to Take

  1. Clean the Terminals: Use a wire brush and a solution of baking soda and water to neutralize the acid.
  2. Wear Protective Gear: Always wear gloves and eye protection when dealing with battery corrosion.
  3. Proper Ventilation: Ensure good ventilation while cleaning to avoid inhaling harmful fumes.
  4. Regular Inspection: Check your battery terminals regularly for signs of corrosion.
  5. Apply Terminal Protectant: After cleaning, apply a battery terminal protectant spray or grease to prevent future corrosion.

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