A buildup of white or green powdery corrosion on your battery terminals will restrict current flow, leading to hard starts or a dead battery. A battery terminal brush is a simple two-in-one tool designed to solve this. The top cap unscrews to reveal a female wire brush that fits over the battery posts to scrub them clean. The bottom end features a male wire brush designed to slide inside the cable clamps to clean the inner contact surfaces. Use it with a baking soda and water mixture to neutralize the battery acid corrosion.
Mechanic Glossary
Battery Terminal Brush
A small wire brush tool designed to clean corrosion and dirt from battery posts and cable clamps.
Frequently Asked Questions
Acid vapors escape from the battery casing and react with the metal terminals and clamps, creating lead sulfate or copper sulfate crystals that block current.
Always disconnect the negative (black) terminal first. If your wrench touches the metal frame while loosening the positive terminal with the negative still connected, it will cause a massive spark and short circuit.
Clean the terminals thoroughly, tighten the clamps, and apply a thin layer of dielectric grease or install felt battery terminal washers soaked in corrosion inhibitor.