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Understanding and Addressing Car Battery Corrosion: A Guide to Prevention and Cleaning

Understanding and Addressing Car Battery Corrosion: A Guide to Prevention and Cleaning

Corroded battery terminals can cause significant issues, from preventing your car or vehicle from starting to damaging various components like the vehicle chassis, electrical wiring, and air conditioner lines. Safeguarding against battery corrosion is vital for maintaining a healthy car battery and ensuring the optimal performance of your vehicle.

What Exactly is Car Battery Corrosion?Identifying battery terminal corrosion is relatively straightforward. It manifests as a white, green, or bluish substance on your vehicle's battery posts, terminals, or cables. The white substance is usually lead sulfate or anhydrous copper sulfate, while the bluish material results from hydrated copper sulfate commonly found on corroded battery terminals. Battery corrosion acts as a poor conductor of electricity, increasing resistance within the circuit. Consequently, this heightened resistance can disrupt the current flow and result in your car failing to start.

Causes of Car Battery CorrosionBattery corrosion is primarily triggered by the release of hydrogen gas from the sulfuric acid inside the battery. As these gases interact with the surrounding atmosphere, they create a corrosive environment. Factors like moisture and salts further accelerate this process. Typically, battery terminal corrosion occurs on the negative battery terminal, indicating an undercharged battery. Undercharging is often caused by the alternator not having enough time to replenish the battery's capacity due to the electrical load demand and short vehicle usage. If corrosion appears on the positive battery terminal, it could be a sign of overcharging.

How to Clean Battery CorrosionWhile prevention is the key to proper battery maintenance, there are instances where you may encounter a battery with corroded terminals. In such cases, you can follow these eight simple steps to clean the corrosion. It's always advisable to wear eye protection and mechanic gloves when working with lead-acid batteries.

Have More Questions?If you have further inquiries regarding the "blue stuff" on your battery or any other concerns, don't hesitate to reach out to us at Automotive Super Center. Our team of trained technicians is here to assist you and provide the answers you need for optimal battery maintenance.