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Unread 10-04-2016, 05:54 PM   #1
Gone Wild
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Default 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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Unread 10-04-2016, 06:31 PM   #2
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Default 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.
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Unread 10-07-2016, 12:17 PM   #3
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Default Re: Positive main battery post corrosion

Will try this. Thanks.
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Unread 10-11-2016, 04:40 PM   #4
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Default 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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Unread 10-11-2016, 10:10 PM   #5
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Default Re: Positive main battery post corrosion

Quote:
Originally Posted by MyCousinVinnie View Post
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?
Corrosion is INSIDE the cable under the insulation... Best to replace...
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Unread 10-11-2016, 10:40 PM   #6
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Default 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.
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Unread 10-17-2016, 09:52 PM   #7
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Default Re: Positive main battery post corrosion

Thanks.
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Unread 10-25-2016, 03:44 PM   #8
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Default

What if the corrosion is a green slime


Sent from my iPhone using Tapatalk
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Unread 10-25-2016, 03:56 PM   #9
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Default 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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