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black discharge on battery

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Old 08-06-2011, 10:31 PM
jdm5630 jdm5630 is offline
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black discharge on battery

i noticed that there is black discharge all over my battery. Does this mean the battery is going bad?
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Old 08-06-2011, 11:32 PM
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Never seen any black discharge on a battery acid would turn to a white powder with a green tint on metal parts. Is it maybe battery cleaner or anti corrosion gel?
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Old 08-07-2011, 12:14 AM
jdm5630 jdm5630 is offline
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well it looks like dirty dired up oil.
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Old 08-07-2011, 07:49 AM
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my autozone yellow tops did that right before they died
I had never seen black residue on a battery before either maybe thats why most batteries are in black cases lol
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Old 08-07-2011, 10:13 AM
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Aren't these sealed batteries? I can't check mine as I replaced it a couple of years ago with a high capacity, deep discharge type usually used in public safety vehicles.

-- Chuck
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Old 08-07-2011, 10:33 AM
jdm5630 jdm5630 is offline
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maybe time for a new one then. what would be better, autozone redtop or yellowtop?
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Old 08-07-2011, 11:42 AM
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i always get the best warranty most cranking voltage myself

I think at Autozone their yellow top is the best (not to be confused with Optima yellow tops)
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Old 08-07-2011, 09:20 PM
jdm5630 jdm5630 is offline
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well i cleaned it off, the terminals were full of that white powdery stuff. But it seems to be cranking fine. but ill get a new one before its too late
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Old 08-08-2011, 01:46 AM
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just take it in and get it tested
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Old 08-08-2011, 12:09 PM
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Mine has the same thing. Many batteries do this. Wipe it off with a rag and some simple green.

If the battery is swelling up then replace it.
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