Battery Terminal Anti-Corrosive

[Clarkbug]

I use the NOCO oil based protectant. Not sure it's anything other than a flowable grease, but the one little can sure lasts for a lot of batteries. It does warm up and will eventually make a mess, but there isn't a lot of crustyness happening on my batteries.

https://batteryoutfitters.com/noco-4oz-ncp2-battery-corrosion-preventative/

 

[50yr Street Mech]

I use the felt washers, then smear the posts & battery clamps with NOCO anti-corrosion grease. Messy, but works great.

 

[SOUNDMAN5000]

I have not had a issue with Battery Terminals in many years, I do use a tiny bit if Vaseline on my Golf Cart batteries and a tiny bit of Deoxit or Deoxit Pro Gold on my car and motorcycle batteries and have not seen any corrosion on anything in over 20+ years.

 

[Selmorides]

Maybe time to replace the battery. I was getting heavy corrosion on the negative post on a 6 year old Interstate. Corrosion came back. After another cleaning I pulled the battery and saw a little bulge on one side. Replaced with Farm & Fleet/East Penn Platinum. No more corrosion. No felt washers or grease. Interstate was a 6 year battery so I got what I paid for.

 

[SOUNDMAN5000]

Maybe time to replace the battery. I was getting heavy corrosion on the negative post on a 6 year old Interstate. Corrosion came back. After another cleaning I pulled the battery and saw a little bulge on one side. Replaced with Farm & Fleet/East Penn Platinum. No more corrosion. No felt washers or grease. Interstate was a 6 year battery so I got what I paid for.

Yes, any sign of a troubled battery, I would replace it, I have found 4-5 years is what I expect, the bulge would suggest something is wrong.
I'm no expert but my guess is running a old battery IF its damaged may hard the charging system and if the charging system is damaged from a bad battery it will cost lots more than a new battery.

FREE battery testing at ANY auto parts store is a big help...

 

[football]

Remove that 11 year old battery now, keep it as a core, and buy a new battery in the spring. That battery is toast. Baking soda and water paste to clean the corrosion. Then dielectric grease all over the terminal.

 

[oil pan 4]

We figured this out.
Clear gorilla glue brand epoxy can reseal leaky battery posts for at least several months and will probably last years.

O

Thread 'Any way to fix leaky battery post?'

Jul 19, 2025

Usually I just replace the leaker with an AGM, problem solved -$200 or more.
Usually when they leak this bad they're near end of their useful life any....
I've got a flooded group 65 (bigger and expensiver) battery in my ford that tests pretty good but it just leaks. I can probably get another year or 2 out of it aside from the leaking.
As far as achieving the means to an end I'm not afraid of electricity, battery acid or melting lead, more afraid of spending $269 not including tax to replace a serviceable but messy battery with a sweet AGM.
The way I figure it I'm probably in it for a...

• oil pan 4
• Replies: 34
• Forum: Automotive Electrical

 

[Donald]

Avoid Exide batteries and you avoid the leakers.

Although with manufacturing moving around (global supply chain) its hard to tell if you will get a well manufactured battery.

At this point I will try and buy East Penn manufactured AGM batteries at Walmart or NAPA.

 

[JHZR2]

Usually I’d use dielectric grease no issues. In more recent years I’ve started using no-ox-id grease because it’s conductive.

https://www.sanchem.com/electrical-contact-lubricant.html

 

[Randol]

I never had this issue before. Then I bought a new JD 3025E tractor in 2020. That battery crusted up and leaked really bad, almost to the point of needing a new cable. Ran down the frame and corroded the ground lug. Replaced the battery, neutralized everything, and put in a new battery. I used the felt washers and slathered it up good with dielectric grease. Did that 2 years ago, looks fine so far. It was a shame since the OEM battery was still strong.

 

[MParr]

Petroleum jelly AKA Vaseline

 

[Kira]

Sears battery installers used a colored (red?) spray (CRC) which lasted YEARS.
When I install a battery, I spray the posts, make the connections then spray the clamps' exteriors.
The stuff works and lasts. I'm sure other coatings do too.

Obviously, if the connections are corroded, I clean diligently with baking soda and water and make sure to clean-out all the corrosion.

BONUS: The product's color differs with each production run.
I've had red, green and purple.