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10-04-2016, 04:54 PM | #1 |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Positive main battery post corrosion
Its the only place on my entire set of batteries (8 6volts in all) where any corrosion shows up. I can clean it, and it comes back within a week or two. Any ideas? Everything runs fine on the cart.
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10-04-2016, 05:31 PM | #2 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Positive main battery post corrosion
The white substance around battery terminal is either lead sulphate or copper sulphate.
Add a little water to the white substance, if it changes to a blueish color, it was copper sulphate. Copper sulphate indicates the corrosion is inside your copper cable and/or lug (under the cable jacket if open end lug or loose shrink tube). Make sure the cell cap near that terminal is sealing properly and there are no stress fractures near the battery post. |
10-07-2016, 11:17 AM | #3 |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Re: Positive main battery post corrosion
Will try this. Thanks.
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10-11-2016, 03:40 PM | #4 |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Re: Positive main battery post corrosion
Turns out it was the bluish stuff. Copper sulphate. Is there a way to repair one of those big battery cables, or should I just buy a new one?
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10-11-2016, 09:10 PM | #5 |
Gone Wild
Join Date: Jun 2014
Location: Sunset Bay, TN
Posts: 2,390
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Re: Positive main battery post corrosion
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10-11-2016, 09:40 PM | #6 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Positive main battery post corrosion
If the cable is swollen or crunchy near the terminal, there is nothing you can do but replace it.
My preference is a cable with a heavy walled, tinned, closed end lug, professionally crimped using a hex or diamond pattern die, protected with adhesive lined heat shrink tube. |
10-17-2016, 08:52 PM | #7 |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Re: Positive main battery post corrosion
Thanks.
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10-25-2016, 02:44 PM | #8 |
Gone Wild
Join Date: May 2010
Location: Houston, TX
Posts: 203
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What if the corrosion is a green slime
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10-25-2016, 02:56 PM | #9 |
Gone Wild
Join Date: Apr 2014
Location: Oregon City, Or
Posts: 1,977
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Re: Positive main battery post corrosion
Same thing. Copper oxidation (think green copper roofs). Some people are green-blue color blind (also depends on the light source when viewed).
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