The Anti-Corrosion Disc

Once you've cleaned your battery posts and terminals, you want them to stay that way. Some people swear by these little furry terminal protectors for keeping the corrosion away. I've tried them and, to my surprise, they seemed to work to some degree. I still saw corrosion on cars that were prone to it, so don't rely on them entirely.

Using the discs is pretty self-explanatory. With the terminals removed, simply add the discs, installing the red disc on the positive post and the green on the negative.

Now re-install your battery terminals, positive first, and you're all set.