How To Get Out A Corroded Battery. This is the way Id do it. It may take several applications of the cleaning agent along with scrubbing efforts on your part to clean heavily corroded.
I opened it to change the batteries. There are special terminal cleaner brushes available at auto stores too. For an easy DIY.
Corrosion on battery terminals.
Once all the scrubbing and dipping is. How to Clean Corroded Car Battery Terminals by Rose Kivi. This is the way Id do it. In photo 1 you can see the exposed copper trace above the slots is corroded at least 10cm.
