The function of these tools can be replicated with what you’ve got around the house. Small wire brushes, old tooth brushes, steel wool and maybe a little bit of sandpaper will generally do the trick.
That said, if you see a deal on these tools, it doesn’t hurt to have them around. They are designed to clean your terminals a little more efficiently and thoroughly.
Typical Battery Terminal and Connector Cleaner
There a cap at the end, which when removed, reveals a brush that allows you to clean the connector at the end of your battery cable.
This one is made by Proto and will set you back $15.00.
It can be purchased HERE.
3 Way Terminal and Post Cleaner
Instead, this a basically scrapes the corrosion off with a blade. There are two ends sized for the positive and negative battery terminal.
The third end is a ream that will scrape the corrosion from the inside of the connectors on your battery cables.
The cost for this tool is about $9.00. It can be purchased online.