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Open Roads Forum  >  Tow Vehicles

 > Battery acid crud on top of battery

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BenK

SF BayArea

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Posted: 08/21/19 07:37am Link  |  Quote  |  Print  |  Notify Moderator

Common and many time exacerbated by the age old carry strap that clamps on both terminals and/or rough handling while tightening the cable clamps


Recently tossed my decades old post clamp battery handle after noodling this exact topic. Saw how it places high stress on both posts that messes up the post to case seal

Still see shops using that old style and think most of their customers will have compromised battery post to case seals

Bought a new carry handle from NAPA that looks like the old world ice block carry. This tool clamps on the side of the battery case and does not involve the post

I've always used dialectric grease on the post/case. Then a felt washer (they are next the batteries at parts stores) and the soak the felt with battery spray (also next to the batteries)....then the cable clamp, which I do not horse around so as to not mess up the new battery post seal

If the cable clamp has become stretched, either replace with new...or use copper tape wound on the post to increase it's dia


This is the tool. walmart


-Ben Picture of my rig
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BenK

SF BayArea

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Posted: 08/21/19 07:56am Link  |  Quote  |  Print  |  Notify Moderator

PS...

Charging lead acid batteries can have the acid vaporize, more so if high speed and/or over charge

If the battery gets very warm to hot, your charging to fast or too long and boiling the acid


There should be a vent somewhere on top, but the vapor pressure can force acid vapor out through the post seal

Those felt washers are treated with antacids and I spray/soak on even more

rhagfo

Portland, OR

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Posted: 08/21/19 08:05am Link  |  Quote  |  Print  |  Notify Moderator

Most new batteries have built in carrying handles, they all seem to work well.


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2oldman

Ca

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Posted: 08/21/19 08:44am Link  |  Quote  |  Print  |  Notify Moderator

I think you should get AGM batteries.

BenK

SF BayArea

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Posted: 08/21/19 10:38am Link  |  Quote  |  Print  |  Notify Moderator

Yes...until recently...Costco's no longer has them and they why I had to search for my old post carry strap...and why ended up noodling it while looking for it...found it after buying the new carry mechanism mentioned above


rhagfo wrote:

Most new batteries have built in carrying handles, they all seem to work well.



AMG batteries are cool, but after my red top died, thought about the cost vs just changing them out for Costco lead acid...about a wash in my case, but the year or so dealing with the red top losing power isn't worth it...and yes, I'm cheap and pinch the penny hard on most things...

Wild Bill 888

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Posted: 08/21/19 11:01am Link  |  Quote  |  Print  |  Notify Moderator

Instead of grease get a longer lasting seal with100 % silicon rtv.

Wait several hours for the battery to depressurize.
Gently wash with a low velocity flow of water to avoid splashing.
Remove cable, wash again, use high speed water to clean out cracks.
Allow to dry completely, use compressed air if available.
Apply a bead of silicone around the terminal. Wearing a rubber glove press the rtv into the plastic around the terminal to fill cracks. Apply another bead around the terminal and reinstall the cable.
Allow to cure overnight before starting engine.

Grit dog

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Posted: 08/21/19 11:02am Link  |  Quote  |  Print  |  Notify Moderator

After cleaning up the batteries, I’ve used RTV gasket sealant around the base of the battery post. That worked decent too.


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FishOnOne

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Posted: 08/21/19 05:01pm Link  |  Quote  |  Print  |  Notify Moderator

dodge guy wrote:

That type of buildup is from a leaking battery. There is a small crack around the battery post that is allowing the gasses to escape and the resulting crud buildup. Tell them the battery is leaking. They have a failure code for that and can replace a leaking battery even though the battery may test good. And tell them to replace both so the system functions properly.


I actually replaced my wifes Motorcraft battery this morning. I took it to the Ford parts dept. and that's when I noticed the plastic delaminated from the negative terminal. I did receive a free replacement.


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thomasmnile

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Posted: 08/21/19 06:43pm Link  |  Quote  |  Print  |  Notify Moderator

Boy batteries in general just ain't what they used to be. Just returned home from taking my son in law to get a replacement battery for his 2018 Rav 4. Deader than h*LL and they haven't had it 2 years. Nope, they're not what they used to be and the price? OMG!

FishOnOne

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Posted: 08/22/19 08:20am Link  |  Quote  |  Print  |  Notify Moderator

thomasmnile wrote:

Boy batteries in general just ain't what they used to be. Just returned home from taking my son in law to get a replacement battery for his 2018 Rav 4. Deader than h*LL and they haven't had it 2 years. Nope, they're not what they used to be and the price? OMG!


I've always had good luck with motorcraft batteries but that may not be the case anymore

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