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Old 01-02-2018, 12:03 AM   #26
Bobbyz
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A wires resistance goes up the hotter it gets.
Just saying.

Last edited by Bobbyz; 01-02-2018 at 12:17 AM..
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Old 01-02-2018, 12:36 AM   #27
Lando
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Quote:
Originally Posted by Bobbyz View Post
A wires resistance goes up the hotter it gets.
Just saying.
But the voltage provided by Gibbs free energy law also goes up.
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Old 01-02-2018, 01:33 AM   #28
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This weather sucks ! It was over (under?) 30 bellow this morning, -24 and dropping now.
Just to give you some idea what a pain in the ass that is on batteries. If you don't get a door shut all the way and the interior lights stay on and drain the battery, then it freezes and once they freeze good and solid they're junk.
After buying a few new batteries to replace one's that weren't very old I've gotten pretty good at making dammed sure the doors get closed.
I love Minnesota!
on some cars w/ sticky doors & mystry dome lights, removing the bulb was one solution.

" a battery drain at -20f(+/-?),may not be the same, again "
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Old 01-02-2018, 04:13 PM   #29
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Awesome write-up Lando! Subbed for later use.
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#mclovethesenuts

-My car: White 1991 244, 308k miles. B230F LH2.4, AW70, R134a retro. Thrush glasspack, anthracite refinished Coronas
-Wife's car: White 1990 244DL, T cam, 190k miles.B230F LH2.4, AW70 w/aux cooler, Duracool AC w/condenser fan, purple refinished Virgos, tow hitch, ipd wagon overload springs.
-PSM 2002 Subaru WRX wagon: 120k miles, Perrin TBE, Perrin turbo inlet, intake, and Y-pipe, GrimmSpeed cross pipe.
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Old 01-02-2018, 05:08 PM   #30
DMFWallace
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What's the ambient where the battery is located?

I've had good success bringing back flat-lined batteries using our OLD ass tester with a "load test" switch.. Read: "Fairly safe Dead-short switch"

I'd hit a warm battery with 60A for a while, then hit the load tester switch and rag the **** out of it. Rinse and repeat until it starts holding a charge overnight, then decrease charging amps, repeat, and finally a trickle charge to fully maximize voltage.
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Old 01-02-2018, 09:27 PM   #31
Lando
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Originally Posted by DMFWallace View Post
What's the ambient where the battery is located?

I've had good success bringing back flat-lined batteries using our OLD ass tester with a "load test" switch.. Read: "Fairly safe Dead-short switch"

I'd hit a warm battery with 60A for a while, then hit the load tester switch and rag the **** out of it. Rinse and repeat until it starts holding a charge overnight, then decrease charging amps, repeat, and finally a trickle charge to fully maximize voltage.
It died with a bulb on at around 20F as the low. The work was done at around 40F but charged over night in below freezing temps.
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Old 01-04-2018, 02:59 AM   #32
Lando
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Let it sit for six days and the voltage was at 13.3V. Drove it to work today and it cranked like a brand new battery in the summer. Ambient temperature was 23F.
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Old 01-04-2018, 05:22 AM   #33
Otto Mattik
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Please tell about Little Richard & Santa

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Old 01-07-2018, 12:57 AM   #34
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Quote:
Originally Posted by DMFWallace View Post
What's the ambient where the battery is located?

I've had good success bringing back flat-lined batteries using our OLD ass tester with a "load test" switch.. Read: "Fairly safe Dead-short switch"

I'd hit a warm battery with 60A for a while, then hit the load tester switch and rag the **** out of it. Rinse and repeat until it starts holding a charge overnight, then decrease charging amps, repeat, and finally a trickle charge to fully maximize voltage.
We did stuff like that at the motorcycle dealer.

Another odd tsb i remember (no clue what manufacturer) was dropping the battery on the floor from about a 1 foot height. I'll let you guess why.

Personally, i buy a battery at the first hint of trouble.
I also buy new tires at 3/32", and new snows at 5/32".
But i remember the used tires/battery days.
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Old 05-26-2018, 09:11 AM   #35
MistrThou
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About to try this with a motorcycle battery if it won't come back. 40% electrolyte mixture? 2 parts sulfuric acid, 3 parts distilled water sound correct?
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Old 05-26-2018, 11:39 AM   #36
Lando
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Originally Posted by MistrThou View Post
About to try this with a motorcycle battery if it won't come back. 40% electrolyte mixture? 2 parts sulfuric acid, 3 parts distilled water sound correct?
Not sure really, I just used the full quart for my battery. How much does a group 24 battery hold?
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Old 05-26-2018, 02:09 PM   #37
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Trickle charge for a couple of days.
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