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Do your Battery Caps leak ?

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Posted by Evad Remlu on October 7, 2008, 8:27 pm
 
Do the caps on your lead acid batteries leak acid ?

I found the cause of these leaks to be a mold release defect in the caps
that can be easily removed.

See this short video to see what I am talking about:




I also keep the level of acid in my batteries fairly low and add water
monthly. The tops of my batteries stay clean and dry and I don't need to do
the baking soda cleanup business anymore.


Enjoy your batteries!

ER






Posted by Russ in San Diego on October 8, 2008, 11:25 pm
 

Don't your battery cell caps have a gasket? I somehow doubt that a
0.25 mm bead is going to interfere with the operation of the 4-5 mm
thick gasket.  If it's leaking, I suspect it will continue to leak,
even after you shave that bead down.  Have you seen any reduction in
leakage after having shaved down these beads?  How long has it been
since you tried this?

Posted by Evad Remlu on October 9, 2008, 12:32 pm
 

Don't your battery cell caps have a gasket? I somehow doubt that a
0.25 mm bead is going to interfere with the operation of the 4-5 mm
thick gasket.  If it's leaking, I suspect it will continue to leak,
even after you shave that bead down.  Have you seen any reduction in
leakage after having shaved down these beads?  How long has it been
since you tried this?

It actually took me about a year to figure this problem out. First I tried
putting grease on the gaskets and that would actually stop them from leaking
for a month or two. Then a few months ago when I noticed two caps that were
leaking especially bad and I looked closer. The gaskets actually had a small
crease in them right where the leak was. I changed gaskets and added grease
and the leaks stopped. Then a month or so later other caps started leaking
again and I went to put new grease on all gaskets. This time I accidently
noticed the plastic mold bead that was causing the crease in the gaskets.
DAMN ! That was it! I cut off the plastic and smoothed all the caps. Cleaned
the gaskets and used no grease. Now for over two months there have been no
leaks.

ER




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