In the case of a lead-acid battery, corrosion suggests some electrolyte leakage, and the lead cells or terminals are deteriorating. It is particularly concerning when white deposits accumulate on the battery’s negative terminal (cathode), as this is a result of sulfation, which is a more severe issue than corrosion.
The whitish/bluish powdery stuff in a car battery, particularly on the battery terminals and the area that surround them, is called corrosion. It is something that is commonly found on lead-acid batteries, the battery that is being used for most cars. What Causes Corrosion?
Use gloves. Lead salts are quite poisonous. You should also wear an air filtering mask and eye protection when cleaning it. You can put baking soda in some water and mix it. Pour it on the battery terminal and use a brush to clean it off. The water and baking soda will prevent you from breathing in any of the lead sulfate dust.
More than anything, corrosion is usually a sign of either normal wear and tear or user error, in terms of maintenance. This is common in lead-acid batteries used for deep cycles like boats, RVs, and golf carts. To prolong your battery’s use and to keep it from completely failing, follow the steps below.
Traditionally known as wet-cell batteries, lead-acid batteries are frequently used to start automobiles. The white, crusty substance on them is likely to be lead crystals, lead sulfate, and zinc sulfate. These substances are potentially dangerous and have been classified as probable carcinogens for human beings.
A thermal expansion could push the acid and water mixture out of the battery vents located on top of the battery. This spilled electrolyte could react with the metals in the battery connector that will generate corrosion.