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#3183583 - 11/10/13 07:43 AM battery sulfation
Donald Offline


Registered: 03/21/04
Posts: 20472
Loc: Upstate NY
OK, I am trying to revive the battery in my pickup and have been reading some about battery sulfation and desulfation.

Some interesting videos on YouTube. One was the picture taken down the cell cap hole looking at the plates with one picture taken every other day for over a month. You could see the brown-tanish stuff disappear and the battery go back to normal plates and separators. However a comment was made that it takes about 1 day per pound of battery. Thats a long time.

BatteryMinder seems to have the best products to deal with sulfation. Other products mention desulfation but then complete the cycle in 8 hours or less.
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


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#3183586 - 11/10/13 07:45 AM Re: battery sulfation [Re: Donald]
bullwinkle Offline


Registered: 10/09/04
Posts: 7673
Loc: Cincinnati, OH, USA
My Battery Minder has paid for itself several times over-just leave it on for a minimum of a week, it'll bring 'em back!
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06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 15 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)

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#3183599 - 11/10/13 07:55 AM Re: battery sulfation [Re: Donald]
nitehawk55 Offline


Registered: 04/01/10
Posts: 1084
Loc: Ontario , Canada
It might work as long as there are no issues with any of the cells . Once a battery has been sulfated I'm not sure if it will have the capacity it should have , you may only have a smaller percentage .

Keep us posted , I've often thought of getting a battery minder or smart charger .


Edited by nitehawk55 (11/10/13 07:59 AM)
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#3183600 - 11/10/13 07:56 AM Re: battery sulfation [Re: Donald]
Donald Offline


Registered: 03/21/04
Posts: 20472
Loc: Upstate NY
Its often mentioned a "neglected" battery sulfates so I could see that for a boat, lawn tractor, generator, but would a vehicle battery sulfate that is used once or twice a week (30 min minimum drive) sulfate?
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#3183611 - 11/10/13 08:03 AM Re: battery sulfation [Re: Donald]
bullwinkle Offline


Registered: 10/09/04
Posts: 7673
Loc: Cincinnati, OH, USA
Usually I've seen sulfation on ones that are neglected, or ran dead due to vehicles not being driven. I just used it on my brother's battery out of his '94 Cobra that sat undriven for 2 months+, he had jumped it, driven it several miles, and it didn't charge enough to restart it when he got back. Left the Minder on for a week, and AAP load tested it at 580 CCA on a 610 CCA battery (2 1/2 year old JC built WM Everstart battery). It doesn't fix everything, but it definitely makes a difference.
_________________________
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#3183628 - 11/10/13 08:17 AM Re: battery sulfation [Re: Donald]
spasm3 Online   content


Registered: 05/30/10
Posts: 8665
Loc: North Carolina
+1 on the battery minder, My motorcycle battery goes on it every winter.
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#3183639 - 11/10/13 08:28 AM Re: battery sulfation [Re: Donald]
Chris142 Online   content


Registered: 06/05/03
Posts: 16844
Loc: Deplorable in apple valley, ca
I have a couple of chargers that are suppoeed to fix sulfated batteries and neither work. I've also tried Epson salt which didn't work either.

I think that a dead battery is just that...dead.
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#3183643 - 11/10/13 08:37 AM Re: battery sulfation [Re: Donald]
spasm3 Online   content


Registered: 05/30/10
Posts: 8665
Loc: North Carolina
Battery Minder has a new charger i have not seen before. Its a small 1.5amp desulfator that also has temperature compensation. Its the model 1500.

http://batteryminders.com/12-volt-maintenance-charger-desfulator-1500
_________________________
13 elantra 68k 5w30 QSUD
03 chevy avalanche76k synpwr 10w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 3900 miles m1 0w20/0w40 mix

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#3183743 - 11/10/13 10:50 AM Re: battery sulfation [Re: Donald]
JHZR2 Offline



Registered: 12/14/02
Posts: 41805
Loc: New Jersey
The right way to desulfation is higher than normal charge voltages. The battery will gas, and water will need to be replaced (recall the opening vent cap thread).

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#3183751 - 11/10/13 11:00 AM Re: battery sulfation [Re: spasm3]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6605
Loc: southeast US
Interesting, it also has a worldwide voltage support. Last time I was looking for a battery maintainer that would work in Europe, I had to go to ebay.
It's pricy though.

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#3183795 - 11/10/13 12:03 PM Re: battery sulfation [Re: Donald]
SubLGT Offline


Registered: 01/31/06
Posts: 2646
Loc: Idaho
Originally Posted By: Donald
…………….would a vehicle battery sulfate that is used once or twice a week (30 min minimum drive) sulfate?


Yes, a lead acid battery kept under less than 100% state of charge (SOC) is susceptible to sulfating. It takes a lot more time to get a battery from 70% SOC to 100% SOC, than from 40% SOC to 70% SOC. A 30 minute drive once or twice a week is unlikely to prevent sulfation.

http://batteryuniversity.com/learn/article/sulfation_and_how_to_prevent_it

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#3183882 - 11/10/13 02:04 PM Re: battery sulfation [Re: JHZR2]
Donald Offline


Registered: 03/21/04
Posts: 20472
Loc: Upstate NY
Originally Posted By: JHZR2
The right way to desulfation is higher than normal charge voltages. The battery will gas, and water will need to be replaced (recall the opening vent cap thread).


While that may be one way to do it, the BatteryMinder uses high frequency pulses.
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


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#3183920 - 11/10/13 02:38 PM Re: battery sulfation [Re: Donald]
SHOZ Offline


Registered: 06/28/03
Posts: 5751
Loc: Illinois
Back at the old battery factory where we made AGM industrial batteries we had the ability to run the cells into reverse or negative voltage with a discharge. Then a slow recharge. Brought many back from an initial test discharge failing.
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#3183935 - 11/10/13 02:51 PM Re: battery sulfation [Re: Donald]
SubLGT Offline


Registered: 01/31/06
Posts: 2646
Loc: Idaho
There is a ton of research data available about lead acid battery sulfation prevention, mechanisms, and reversal.

A google search for [sulfation "journal of power sources"] will turn it up.

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#3184032 - 11/10/13 05:07 PM Re: battery sulfation [Re: JHZR2]
wirelessF Offline


Registered: 10/04/07
Posts: 1606
Loc: Oahu, Hawaii
Originally Posted By: JHZR2
The right way to desulfation is higher than normal charge voltages. The battery will gas, and water will need to be replaced (recall the opening vent cap thread).


I've noticed on my Schumancher XCS15 battery charger that it would hit 15.56v at near completing charge. I'm guess the charger is desulfating the battery but I've been wondering why the % hangs at 100% then it enters desulfation mode.

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