How can battery corrosion be cleaned?

• A. With a battery cleaning solution and brush
• B. Wiping with a dry cloth only
• C. Using water alone
• D. Using soap and water with a sponge

Answer: (A)

When battery terminals corrode, the crusty deposits come from acid reacting with the metal and moisture, which insulates the connection and causes poor grounding. The best way to clean it is to use a battery cleaning solution and a brush. The cleaner is formulated to neutralize the acidic corrosion and dissolve the buildup, while the brush physically scrubs the deposits away from the terminals and clamps. After cleaning, wipe or rinse away any residue and dry the area thoroughly before reconnecting. Wiping with a dry cloth won’t remove the deposits or neutralize the acid, water alone won’t neutralize the acid and can worsen corrosion or create a short, and soap and water isn’t specialized for this purpose and may leave residues that encourage more corrosion.