Automotive and Marine battery posts carry a high amperage power to the starter and accessories such as the radio and lights. As a result of the electrical current there will be a tendency for molecular build up on the terminals and cables. When neglected this build up is visible and can even inhibit the current transmission from the battery, resulting in little or no current. The symptoms of a low or dead battery can often be attributed to this simple problem.
Tools & Technique:
To clean automotive and marine battery posts, use a wire brush or battery post cleaner. A mixture of water and baking soda will help neutralize any corrosive buildup. Once the posts are clean, a little petroleum jelly will prevent subsequent corrosion