Battery Terminal Corrosion

[OUTFXD]

The other day I noticed a fair amount of corrosion on my battery terminals. I tore everything down. Cleaned the terminals with a wire-brush terminal thing. Painted them with Baking soda water. cleaned everything off and put it back together.  The starter spun like gang busters!

 

Couple of days later(Literally like three), Starter is dragging again. Out of curiosity I took the battery cables back off and had a good look. There was rust stain on the parts and the battery cable ends where glazed.  I cleaned everything up and put it back together.  Starter turns like gang busters again.

 

What am I doing wrong and how can I prevent Corrosion and the like in the future?

[Sniper]

Those red and green felt washers that you can buy at this parts store actually work good.

[Los_Control]

I heard this on the internet so we know it is true 🙄

Story is the post that come through the battery case do not seal and the fumes leak out ... the trick is to apply some dielectric grease around the post to seal them.

 

My truck does not count because the cable been disconnected for a few months, I have the grease around the post and no scrunge around them.

 

The caravan I just had the cables off a week or two ago and same story ... no scrunge around them.

If this theory is true, I imagine some batteries will leak worse then others .... for some reason GM side post batteries do not have this issue .... no grease on my chebby and no scrunge.

 

[Doug&Deb]

Dielectric grease and the felt washers should remedy the problem.

[Ivan_B]

Yes, dielectric grease and washers (they are black, these days) 😁