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Tool Talk Discussion Forum

rejuvenating lead acid batteries

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Farmerfred

12-05-2005 21:46:12




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I have quite a few batteries that are not fully charged because they sit most of the year (combine,trucks, tractors)and I seem to have to replace to many.Has anyone tried these "pulse revivers" that are supposed to desulfate the plates?




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buickanddeere

12-06-2005 15:42:08




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 Re: rejuvenating lead acid batteries in reply to Farmerfred, 12-05-2005 21:46:12  
A regular brisk charging reduces the sulphation problem compared to a trickle charger being used to re-charge a low battery. Trickle charge is just to top off the last 10% of the charge after bulk charging has been completed.



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tompepper

12-06-2005 05:09:26




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 Re: rejuvenating lead acid batteries in reply to Farmerfred, 12-05-2005 21:46:12  
My dad is 81.he emptys the acid out of them and fills them with white vinegar and lets them set a couple of days.then he emptys them again and rinces them with water then refills with new acid.he seems to have pretty god luck with it.



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Jon Hagen

12-06-2005 11:19:57




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 Re: rejuvenating lead acid batteries in reply to tompepper, 12-06-2005 05:09:26  
I use a couple of batteryMINDer charger/ desulphator sold by northern tool co. I Have had good luck using them to charge and desulphate batteries in long term storage. They are the only thing I have found that will restore full capacity to a battery that has been totally discharged and badly sulphated. Usually a full recharge,then about a week in the desulphator mode will bring them back to near 100% They tell you to charge and test a battery before trying to desulphate it. If the severe plate warping and sulphation caused by a total discharge has caused a short in any of the cells,then the desulphator ain't gonna fix it.

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msb

12-06-2005 17:38:15




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 Re: rejuvenating lead acid batteries in reply to Jon Hagen, 12-06-2005 11:19:57  
I agree with the battery Minder chargers.They will quickly pay for themselves, but the best thing is to replace old batteries with Optima spiral cell batteries.They are more expensive but commonly last for 15 years.Don't corrode or need water added,ever. Auto Zone has the best price on them()$109-$118 depending on the CCA ).Its the only battery I will buy now.



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NEsota

12-06-2005 11:19:14




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 Re: rejuvenating lead acid batteries in reply to tompepper, 12-06-2005 05:09:26  
Before trying anything else you could put them on a trickle charge and see if you gain anything, if so try to get some good out of them. If not try anything you want, if it is not a real fix it may have a placebo effect.



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