Does Pouring Coke on a Car Battery Really Work?

When it comes to tackling battery corrosion, many DIY enthusiasts swear by using Coca-Cola (or other fizzy drinks) as a quick and easy solution. But does it really work? This article explores the effectiveness of using Coke on car batteries and provides detailed steps to safely address terminal corrosion.

Introduction to Coke and Battery Corrosion

The concept of using Coke to remove battery corrosion gained considerable attention after the popular TV show Mythbusters tested the feasibility of this myth. According to the show, Coke is effective due to its acidic properties. However, while it can be a useful temporary fix, it's important to understand its limitations and potential hazards.

Why Does Coke Work?

Coca-Cola, like many other fizzy drinks, contains phosphoric acid. This acid has the ability to break down the corrosive build-up on battery terminals. The process involves neutralizing the acidic or alkaline compounds that cause corrosion, ultimately making the battery terminals appear cleaner.

Using Coke to Clean Battery Terminals

Here’s a detailed guide on how to use Coke to clean your car battery:

Step 1: Safety First

Protect yourself: Before proceeding, ensure you wear gloves and protective eyewear to safeguard against any potential exposure to acids or debris.

Step 2: Disconnect the Battery

Prevent accidents: Always start by disconnecting the negative terminal followed by the positive terminal. This step is crucial to avoid any short circuits that could damage your car’s electrical system.

Step 3: Apply Coke

Direct application: Pour a small amount of Coke directly onto the corroded areas. You can also use a brush to scrub the corrosion gently for a more thorough cleaning.

Step 4: Rinse Thoroughly

Remove residue: After applying Coke and letting it sit for a few minutes, rinse the area with water. This step removes any sticky residue left behind by the Coke, ensuring a clean terminal.

Step 5: Reconnect the Battery

Restore power: Now that the terminals are clean, reconnect the positive terminal first, then the negative terminal. This final step ensures that your car’s battery is ready for use.

Limitations and Alternatives

While Coke is a convenient and affordable solution, it's not a substitute for regular battery maintenance. Proper care and cleaning with commercial battery cleaners designed specifically for this purpose may be more effective and reliable.

Mythbuster's Findings

Back when Mythbusters was still on the air, they tested this myth and found that while Coke can remove some corrosion, it does so temporarily. For sustained results, a more robust cleaning process is recommended.

Conclusion

In summary, while Coca-Cola can help remove minor battery corrosion in a pinch, it's essential to use it with caution and consider the potential hazards. Regular maintenance and using specialized cleaning products will ensure that your car's battery stays functioning optimally.