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Tractor Talk Discussion Forum

Bringing car batteries back to life.

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farmallwayne

12-06-2006 14:18:57
204.111.108.158



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Hello,

Does anyone have any hints on how to bring old car batteries back to life. I bought an old junker that has a dead battery with no charge. The battery looks new 1-2 year old. It will not attempt to take a charge. I took the caps off and it has plenyt of water/acid and the plates look good. I thought I read somwhere there is a special charger that Is kinkof like shock theropy. It delivers a higher voltage shock to bring batteries back to life???
This battery my have been hooked up in the car wrong also.

thanks

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farmall fred

12-07-2006 15:35:08
71.97.160.77



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 Re: Bringing car batteries back to life. in reply to farmallwayne, 12-06-2006 14:18:57  
another thing you can try is change the acid you can get new acid at local auto parts i have turned them over and dropped them about a foot to shake the debrise loose from the bottom of the cells then when you refill it put an uncoated asprin in each cell to help clean the plates



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idontno

12-07-2006 06:36:01
209.42.66.241



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 Re: Bringing car batteries back to life. in reply to farmallwayne, 12-06-2006 14:18:57  
Fill cells full....Put on charger for 24 hrs @10amps.It will either work or not.If it's sit uncharged for too long,it might not take a charge. ...idontno



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msb

12-06-2006 19:06:42
71.50.197.176



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 Re: Bringing car batteries back to life. in reply to farmallwayne, 12-06-2006 14:18:57  
Sometimes this will work.Add an ounce or two of ordinary hydrogen peroxide to each cell, then charge it after the fizzing stops and it sets for a while.
Personally I would just toss it and buy an Optima and be done with the problem.



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buickanddeere

12-06-2006 19:05:27
209.240.120.140



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 Re: Bringing car batteries back to life. in reply to farmallwayne, 12-06-2006 14:18:57  
Take the battery to the recycler's, melt down the plates, smelt out the impurities. Cast into new plates, insert into case, add acid and charge. Anything else is wishful thinking.



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matthies

12-06-2006 17:53:15
12.10.27.40



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 Re: Bringing car batteries back to life. in reply to farmallwayne, 12-06-2006 14:18:57  
I've had good luck hooking a good battery to the bad battery with jumper cables and then hooking the charger to the bad battery and charging. Got this trick from my college instructor. chris



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Blue3992 (N. Illinois)

12-06-2006 15:09:46
205.188.117.14



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 Re: Bringing car batteries back to life. in reply to farmallwayne, 12-06-2006 14:18:57  
I've got no idea how to bring it back to life.

But, if you can figure out where it was bought, they MIGHT give you some sort of pro-rated rebate, since it doesn't work. (probably don't mention that you think it was hooked up wrong).

My local junkyard sells used batteries, 15 bucks each. Always figured that would be a good source for a battery for something I didn't use too much.



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old

12-06-2006 15:03:57
4.244.186.66



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 Re: Bringing car batteries back to life. in reply to farmallwayne, 12-06-2006 14:18:57  
For the most part there is no way to fix a battery that has gotten that bad. And if it was hooked up wrong and the car has an alternator then the alternator will also be bad. When hooked up backward to an alternator it will fry the alternator and then fry the battery



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Dan-IA

12-06-2006 14:33:48
66.43.223.231



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 Re: Bringing car batteries back to life. in reply to farmallwayne, 12-06-2006 14:18:57  
Heard of zapping nicad flashlight batteries with a short 3-5second hit from a car battery, but not car batteries.

One of those 'weird science' websites did suggest a homemade charger that let out an intermittent 30v 'pulse' might work. Oversimplified, I think it was basically a 120-30v transformer with a half-wave rectifier bridge. But you wouldn't want to leave some gadget like that on a battery for very long, or you'll have a mess. Car batteries can explode and spray acid everywhere.

So, better to just replace it.

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Bob

12-06-2006 15:02:43
69.178.229.154



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 Re: Bringing car batteries back to life. in reply to Dan-IA, 12-06-2006 14:33:48  
"ZAPPING" is for Ni-Cads.

Folks CLAIM you can rejuvenate lead-acid batterys by charging them at a slow rate with a charger that combines high-frequency pulses along with the DC charging current.

GOOGLE

"rejuvenate lead-acid battery"

or:

"Lead Acid Battery Desulfator"



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Jon Hagen

12-06-2006 15:40:55
69.26.29.97



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 Re: Bringing car batteries back to life. in reply to Bob, 12-06-2006 15:02:43  
It depends on why the battery will not take a charge. If sulphation from setting around while discharged is the problem,then there is a chance you can revive it with a desulphator/charger like the Battery MINDer sold by Northern Tool co.
I have two of those that I use to maintain the batteries in my equipment that is only used in season and may set for 10 months unused. I once used it to salvage a large battery that had been drained of electrolyte in a rollover and let set for over a year. I refilled with new electrolyte and let the desulphator work on it for several weeks,that one came back to 90% capacity and worked for another couple years.
If the battery will not take a charge because a cell is shorted or a cell connector is broken,then it is scrap.
Below is a link to the desulphator/charger sold by northern tool called the Battery MINDer.

http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_197012_197012

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Bob

12-06-2006 16:53:38
69.178.229.154



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 OT for Jon Hagen in reply to Jon Hagen, 12-06-2006 15:40:55  
I talked to your buddy again, the other day, about the 261 engine, and will get together with him and pick it up in a few days.



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Jon Hagen

12-06-2006 17:02:24
69.26.30.34



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 Re: OT for Jon Hagen in reply to Bob, 12-06-2006 16:53:38  
I hope you can use it to make a good engine. I rebuilt it about 25 years ago and is bored OS,dont remember how much :( I think the crank is std.



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