Motorcycle battery terminals can corrode due to several factors, including:
Battery acid: Motorcycle batteries contain sulfuric acid, which can release small amounts of hydrogen gas during the charging process. This gas can combine with other elements in the atmosphere, such as oxygen and moisture, to form sulfuric acid crystals or corrosion on the battery terminals.
Moisture and humidity: Moisture in the air, especially in humid environments, can accelerate the corrosion process. If your motorcycle is stored or operated in areas with high humidity levels, the moisture can react with the battery acid and lead to terminal corrosion.
Electrolysis: Electrolysis can occur when there is an electrical current flowing between dissimilar metals. Motorcycle battery terminals are typically made of lead or lead alloy, while the connectors or cables attached to them may be made of copper or other metals. When these different metals come into contact, especially in the presence of moisture or electrolytes, it can create a galvanic reaction that promotes corrosion.
Improper maintenance: Neglecting battery maintenance can contribute to terminal corrosion. If the battery is not properly cleaned, and the terminals are not regularly inspected or protected, dirt, grime, and other contaminants can accumulate on the terminals and contribute to corrosion.
Overcharging: Overcharging the battery can lead to the production of excessive hydrogen gas, which can increase the chances of corrosion on the terminals. It's important to follow the manufacturer's instructions for charging and maintaining your motorcycle battery to prevent overcharging.
To minimize battery terminal corrosion, you can take the following preventive measures:
Regular cleaning: Clean the battery terminals periodically using a mixture of baking soda and water or a commercial terminal cleaner. Scrub the terminals gently with a wire brush to remove any corrosion or buildup.
Terminal protection: After cleaning, apply a thin layer of petroleum jelly, dielectric grease, or a specialized terminal protectant to the battery terminals. This coating helps repel moisture and inhibits the formation of corrosion.
Tighten connections: Ensure that the battery terminals are securely tightened to prevent loose connections, which can contribute to corrosion.
Insulate terminals: Consider using terminal covers or insulating washers to shield the terminals from exposure to moisture and other contaminants.
Proper storage: If you're storing your motorcycle for an extended period, disconnect the battery or use a battery maintainer to keep it charged. Additionally, store your motorcycle in a dry location with controlled humidity levels to minimize corrosion risks.
By implementing these preventive measures and maintaining regular battery maintenance, you can reduce the likelihood of terminal corrosion and extend the lifespan of your motorcycle battery.