Alternatively, you can also clean the car battery terminals using WD40. Scrub Away: Scrub the affected area with a wire brush until any signs of corrosion are gone.

Over time, car battery terminals can become corroded, which can cause electrical issues down the road. Don’t worry though, there are easy ways to clean them.

The battery terminal (post) cleaner brush shown is more than 50 years old. AutoZone sells the same exact Best Parts Inc. battery terminal cleaner brush with stainless-steel bristles for $2.99.

You can get both CRC battery cleaner and a set of LotFancy terminal cleaners on Amazon. Household products like WD-40 and a baking soda solution can also work in a pinch.