Battery terminal corrosion is a common issue that can cause poor electrical connections and lead to problems with starting your vehicle or reduced battery life.
Corrosion usually appears as a white, ashy substance around the battery terminals and is the result of the chemical reaction between the metal terminals and the acid in the battery. This reaction is accelerated by exposure to moisture, air, and temperature changes.
However, to prevent this corrosion, it’s important to create a barrier that blocks out moisture and air, which are the primary culprits for corrosion.
What to Put on Battery Terminals to Prevent Corrosion
Here is the list of things you can put on your car battery terminals to prevent corrosion:
1. Petroleum Jelly (Vaseline)
Petroleum jelly is a thick, non-conductive substance that repels moisture. When you apply it to your car battery terminals, it will form a protective layer that prevents air and moisture from reaching the metal.
To apply Vaseline to your car battery, you need to first make sure the battery terminals are clean and dry. Disconnect the battery cables, starting with the negative terminal, and clean any existing corrosion using a wire brush or a mixture of baking soda and water.
After cleaning, apply a thin, even layer of petroleum jelly to the terminals before reconnecting the cables. This simple method is effective and inexpensive, making it a popular choice. It did work. I’ve personally used this in the past and it works.
2. Battery Terminal Protectors
Battery terminal protectors are usually made from felt and are treated with a corrosion-resistant compound. These protectors are designed to sit directly around the battery posts to provide a physical barrier that prevents corrosion from forming.
To use this method, after cleaning the terminals, place the felt washers around each battery post before attaching the battery cables. These protectors are easy to install and provide long-lasting protection.
3. Anti-Corrosion Spray
Anti-corrosion sprays are specially formulated to protect metal surfaces from corrosion by forming a protective layer that seals out moisture and air.
These sprays usually contain chemicals that neutralize acid and inhibit the electrochemical reactions that cause corrosion.
Once the battery terminals are clean and dry, spray the anti-corrosion product directly onto the terminals and cable ends.
Allow the spray to dry before reconnecting the cables. This method is quick and provides comprehensive protection, especially in harsh environments.
4. Grease (Dielectric or Battery Terminal Grease)
Grease, like dielectric grease, is non-conductive and water-resistant, which makes it an excellent option for preventing corrosion. It works similarly to petroleum jelly by creating a moisture barrier, but it’s specially designed for electrical connections.
To apply Greece, you need to first clean the battery terminals thoroughly, then apply a small amount of grease to the terminals and the inside of the cable connectors. The grease will keep out moisture and prevent corrosion, while still allowing a good electrical connection.
These are the four things you can put on your battery terminals to prevent corrosion. However, you need to periodically check your battery terminals for signs of corrosion.
Early detection will allow you to clean and reapply protective measures before the corrosion causes serious damage.
Make sure your battery is securely mounted to prevent vibrations, which can cause the electrolyte to leak and contribute to corrosion. Also, make sure the battery is not overfilled with water, as overfilling can lead to acid leakage and terminal corrosion.
Loose connections can also cause sparking, which can accelerate corrosion. So, make sure the battery terminals are tightly secured.
Is it OK to Put Vaseline on Battery Terminals?
Yes, it’s okay to put Vaseline on battery terminals as it helps to prevent corrosion by creating a protective barrier against moisture and air. However, applying Vaseline to battery terminals does not harm the battery. It simply prevents corrosion and ensures a better connection.
What is the Best Lubricant for Battery Terminals?
The best lubricant for battery terminals is dielectric grease. It is specially designed for electrical connections that provide excellent protection against moisture and corrosion while maintaining good conductivity.
What Should You Never Use to Clean a Battery Terminal?
You should never use metal tools (like screwdrivers or pliers) to clean battery terminals while they are connected, as this can cause sparks and short-circuit the battery.
Also, strong acids or solvents should be avoided, as they can damage the terminals and surrounding components. Always use a soft brush, baking soda solution, or a dedicated battery terminal cleaner.
Conclusion
Having a battery terminal that is free from corrosion is the best way to ensure better electrical connectivity for your car. Therefore, you can use any of the methods explained in this article to put on your battery terminals to prevent corrosion. They’re all safe and work.
I recommend using petroleum jelly, I’ve used it in the past and it works. However, you can use anyone you prefer.
