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38 comments
Participant

Join Date: Jan 2009
Posts: 1

How to Recondition an Old Car Battery

01/01/2009 8:58 PM

How would someone go about reconditionig a old auto battery

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Anonymous Poster
#1

Re: How would I reconditon a 12 volt auto battery USA

01/01/2009 9:01 PM
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Active Contributor

Join Date: Dec 2008
Posts: 17
#2

Re: How would I reconditon a 12 volt auto battery USA

01/01/2009 10:19 PM

I am by no means an expert but I do know this much . If someone is selling you one then my advice is to not buy it!. If you are looking to do it yourself I'll need you to stop and think abou what your asking. A car battery works through chemical reaction on metals through the use of a powerful acid (hydrochloric acid) if I recall correctly. When a battery runs low it means one of two things. A) It is low on acid. You can replenish that by filling the individual cells with distilled water only. OR, B) It could be that the metal core that sits in each individual cell is disolved to the point that it can no longer create enough voltage to run your car. In this case the battery is permantly sealed and to open it up is to destroy it. Time to buy a new one. I can only hope you understand and don't do anything foolish. That acid is nasty stuff and it's gasses are explosive! You can get some thing called battery booster that is supposed to enhance or refresh the life in an old battery but I see that as more of a gimmic than anything else but again I can't say for sure. I hope I helped

Cjhils1950

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Anonymous Poster
#18
In reply to #2

Re: How would I reconditon a 12 volt auto battery USA

02/26/2010 5:21 PM

I think you have the wrong acid is Sulphuric acid

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Participant

Join Date: Aug 2011
Posts: 1
#33
In reply to #18

Re: How would I reconditon a 12 volt auto battery USA

08/27/2011 5:08 AM

Dear friend actualy a good profasional battery recover machine takes 7-8 hours to fully recondition a 200amp battery.

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Anonymous Poster
#32
In reply to #2

Re: How would I reconditon a 12 volt auto battery USA

11/12/2010 4:36 PM

The acid is sulfuric acid and NOT hydrochloric acid. Get facts correct BEFORE making these statements as I do not believe you know anything about lead acid batteries.

FAH

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Anonymous Poster
#3

Re: How would I recondition a 12 volt auto battery USA

01/02/2009 1:53 AM

cost of battery's over time to rebild don't add up. junk yards sell used battery's 1/2 cost of new or even less. and rebuilding one is not Essy. it can be done try giving it a good charge fist check cells see if filled you can get battery premix to put in batters but time is money, with that trade it in for a new one. you have lead aced safer in batters. unless your going to do this on hundreds of batteries time to learn not wheart the time. hope this helps

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Power-User

Join Date: Sep 2007
Location: Raleigh, NC
Posts: 149
Good Answers: 7
#4

Re: How would I reconditon a 12 volt auto battery USA

01/02/2009 8:32 AM

Easier said than done. If the battery has a bad cell, then you pretty much have to open up the case and replace the plates inside.

If the battery is simply weak, then you can attemp to remove the 'memory' from the battery by charging, discharging, recharging, discharging, etc. It may take several cycles to remove the memory from the battery and get good performance from the battery. It will never be like new, but you can bring these back by cycling them several times.

If it is not a matter of having to keep an original style battery in the car, such as in the case of the restoration of an old car for the purposes of show, then the cheapest way around this is to go to a junk yard and buy a used battery. These can be had for a fraction of the cost of a new battery and should still provide good life.

If you are trying to maintain the original battery, there are several suppliers of vintage batteries out there. Check Hemmings Motor News for their advertisements.

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Commentator

Join Date: Oct 2010
Posts: 61
Good Answers: 5
#38
In reply to #4

Re: How would I reconditon a 12 volt auto battery USA

01/30/2013 3:27 AM

Replace? No, my friend. I have a book on practical electricity from the 1800's (Believe it or not. It's called the "Audell's guide to practical electricity" and even featured a wooden- spoked hybrid vehicle! I kid you not. They say the solution to sulfated lead acid battery cells is actually scraping them with a knife whilst the top of the battery is removed from the case, something commonaly available back then. Today, not so much, and I wonder why! Battery companies have to make money too, right? Throw away old batteries and buy a new one. Back then, batteries were made to be disassembled and cleaned. Today, one must know how to "weld" plastic after opening the battery box. Scrape off the sulfates and the battery is new again, with a slightly diminished AH capacity (Usually not noticed).

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Guru
Safety - ESD - New Member India - Member - New Member Engineering Fields - Energy Engineering - New Member

Join Date: May 2007
Location: Pune , India
Posts: 824
Good Answers: 39
#5

Re: How to Recondition an Old Car Battery

01/07/2009 8:09 AM

Reconditioning of car battery depends the type of battery (Lead acid non sealed)and the amount of deterioration. If only the battery is dried up then add distilled water and charge it and discharge and charge again then if the charge retains it will continue to work for more time. If the charge does not retain, or it does not get charged at all it means one or more cells are damaged. In that case normally the battery needs replacement. In case if the plates can be removed with out damage with the help of gas torch then the damaged plates can be replaced and after cleaning and refilling with electrolyte the battery can be charged. It is not economical to recondition small batteries. It is worth reconditioning larger AH batteries used for forklifts and battery trucks. In India there are battery repair workshops who undertake reconditioning of battery commercially.

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Anonymous Poster
#6

Re: How to Recondition an Old Car Battery

01/17/2009 6:49 PM

wow you guys dont know anything. from what i just saw on youtube and read online, its alot cheeper to repair batterys then to replace them. by the way its due to sulfation which causes the lead to disolve into a crystal and adhear to the metal plates. simple chemicals which you can buy on ebay which will reverse the process and even turn completely dead batterys back to life again. another thing the acid doesnt go away or the plates dont corrode. you guys know nothing.

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Guru
Safety - ESD - New Member India - Member - New Member Engineering Fields - Energy Engineering - New Member

Join Date: May 2007
Location: Pune , India
Posts: 824
Good Answers: 39
#7
In reply to #6

Re: How to Recondition an Old Car Battery

02/03/2009 9:25 AM

Hi Guest

You read on u tube and decide that all others do not know any thing . Please do some reconditioning of batteries yourself and tell us how many batteries you salvaged and at what cost and what is the renewed life.We have salvaged batteries worth more than $100,000 annually ,avoiding costly replacement on traction batteries. It is not kids job .A whole department had to work very hard with proper planning.

Be more civilised in making comments. If you feel you have better knowledge try to impart it to others. Do not try to insult a complete society with your comments.Some of them might have even spent years researching on these subjects to save finance of their organisation but give only few facts relating to a thread. This is only a voluntary service by sharing experience when some one has little spare time to clear simple doubts raised by members and Guests and not a paid job.

Regards.

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Anonymous Poster
#8
In reply to #7

Re: How to Recondition an Old Car Battery

03/23/2009 1:07 AM

Hi everyone,

Some people just dont know the time and effort taken to do research on a subject that does the job properly. Please everyone just appreciate all the help that is given and remember that it is all free stuff and every job has a different method. I get very annoyed with people running down others idea instead of shedding more light on the subject.Learn to be a better person.-----thanks

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Active Contributor

Join Date: Oct 2011
Posts: 11
#34
In reply to #8

Re: How to Recondition an Old Car Battery

10/16/2011 2:48 PM

Top man and top advice, I've been trying to get an idea across, I'm not very litrate bur try, some of us some of us can't it's that simple, some are good at maths .......... Pink Floyd have covered it !!

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Anonymous Poster
#9
In reply to #6

Re: How to Recondition an Old Car Battery

04/12/2009 10:15 PM

what is the name of the chemical you use to reverse the sulfation process.

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Anonymous Poster
#10
In reply to #9

Re: How to Recondition an Old Car Battery

07/26/2009 5:26 AM

One site I saw said to first drain the liquid sulfuric acid from the battery, then boil 250g of epsom salts in 500ml of distilled water. Then add that to the cells (once it cools?) plug the holes and shake it up. Put the battery just like that on a trickle charger for 24 hours and it will be charged good enough to put in your car and start it!

Sounds like a neat science experiement to me.

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Anonymous Poster
#11
In reply to #10

Re: How to Recondition an Old Car Battery

08/20/2009 1:18 PM

That is very strange, i was reading all the comments telling the one person, that he should have more concideration for those who give there time, so forth and so on then i see the post that tells how to do it, i look down after that no more posts, ummm me thinks this might be the secret that those experts didn't want anyone else to know, I'm trying it, epson salt is very cheap, nothing ventured nothing lost

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Anonymous Poster
#28
In reply to #10

Re: How to Recondition an Old Car Battery

10/09/2010 6:16 PM

OK close but dont drain sulfuric acid it is needed for the chemical reaction! if you would like you could replace the acid it is sold at most auto parts stores im mot sue if its the shaking or the epson salts that do it but is does seem to work again SUFURIC ACID IS NEEDED TO MAKE THE BATTERY WORK!!! DONT DRAIN IT UNLESS YOU PLAN ON REPLACING IT!! also dont put it on the charger with plain distilled water and salt in it well not sure if it would hurt it but make sure the acid is in there

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Participant

Join Date: Jul 2012
Posts: 1
#36
In reply to #6

Re: How to Recondition an Old Car Battery

07/26/2012 8:45 PM

I cant tell how long it was since you posted this but thanks. I am looking for the ch on e-bay

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Anonymous Poster
#12

Re: How to Recondition an Old Car Battery

08/22/2009 6:08 PM

for a person with his time is worth $20.00 an hour, spent 4 hour on try fixing a battery, buy those chemical from ebay. remember there will be no warranty. you do the math.

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Anonymous Poster
#26
In reply to #12

Re: How to Recondition an Old Car Battery

06/27/2010 8:35 AM

Do it in your spare time, not on your working time

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Anonymous Poster
#13

Re: How to Recondition an Old Car Battery

08/26/2009 12:22 AM

1 dump out acid

2 run water in each cell then dump agian

3 fill with meridic acid 5 min max(you can see the plates they come very clean)

4 rinse each cell out very well (i use a small funnel so the clean water pushes out the dirty)

5 refill all cells with new acid .........i have saved a few batteries this way,good luck be careful.

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Anonymous Poster
#16
In reply to #13

Re: How to Recondition an Old Car Battery

11/21/2009 10:00 PM

There's no such thing as meridic acid

Are you trying to spell out muriatic acid or otherwise known as hydrochloric acid?

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Anonymous Poster
#14

Re: How to Recondition an Old Car Battery

10/22/2009 7:21 AM

Hi guys!

I stumbled across this forum when looking on how to restore car battery. I've a 220Ah battery and it loses charge pretty quickly, even with just the door open for 5 mins and battery doesn't have enough power to turn engine over.

I measured the battery terminals and it read 12.5 volt. Not convinced so I peeled off the cover off to reveal the big six plastic screws and opened them. I used multimeter to check each cells. All except one reads approx 2 volts (give or take 0.1 volt) and one cell appears dead - approx. 0.3 volt. It's the last cell i.e. between last hole and the negative terminal. It looks like I've a dead cell.

I have 5 amp power supply. I'm wondering if I force a current across the dead cell by sticking in a '+' wire from power supply into the last hole and the '-' wire to neg terminal - would that revive the dead cell?

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Anonymous Poster
#15
In reply to #14

Re: How to Recondition an Old Car Battery

11/21/2009 9:52 PM

From what I have read so far it would appear that a cell goes dead from excessive sulphation in that cell(lead breaking down or rusting). Probably due to the inconsistant lead density when it was manufactured.

Therefore electrically charging a sulphated cell would not revive it Only de-sulphating that cell chemically or with an electronic desulphator ( available on ebay) called a battery desulphator

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Anonymous Poster
#17

Re: How to Recondition an Old Car Battery

01/31/2010 2:13 AM

hi !

the cells which arent much damaged by shedded lead from plates, can be desulphated using a chemical called EDTA.

i did it to my 3 year old car batt and have used it for another 2.5 years and again am gonna do it soon to get a total life of 7-8 years from a normal automotive lead acid battery

thanks

sandeep kapoor (gurgaon)

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Participant

Join Date: Aug 2012
Posts: 2
#37
In reply to #17

Re: How to Recondition an Old Car Battery

08/09/2012 2:27 AM

I had a career in medical technology. EDTA is/was a type of anticoagulant used to keep blod from clotting that was to be tested using various methodologies on various components of said anticoagulated whole blood specimens. Is this the same type of EDTA or is it commercially available and in what form does it come in and where may it be purchased? Thanks

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Anonymous Poster
#19

Re: How to Recondition an Old Car Battery

03/11/2010 1:07 AM

The battery in my 02 F-150 just died. 8 years is not too bad for a stock Ford battery. I'll try using the procedure at http://www.ehow.com/how_4855050_recondition-car-battery-home.html.

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Participant

Join Date: Apr 2010
Posts: 1
#21
In reply to #19

Re: How to Recondition an Old Car Battery

04/19/2010 8:38 AM

Hello,

I just looked at the eHow link and am concerned that the information is incomplete. The "Battery Flush" sounds reasonable (I'm no chemist), but the link does not say to drain the Epsom salt solution after step (4). I wonder if the Epsom salt "Flush" should be drained then well rinsed and the proper solution and volume of sulfuric acid (battery acid) be replaced in the battery cells before recharging ???

I've tried to leave a comment on the eHow link/thread, but haven't yet figured out how to do it.

Gonna try some (Epsom salt) Flush and refill experiments both ways.

Hope to have some good results to post - geoff

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Anonymous Poster
#27
In reply to #21

Re: How to Recondition an Old Car Battery

09/14/2010 4:18 PM

I think that there is no need to put the acid back to the battery, because the magnesium sulfate turns into some kind of acid after the battery is recharged with the solution in it.

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Anonymous Poster
#20

Re: How to Recondition an Old Car Battery

04/07/2010 2:13 AM

Dear friends,

I have been looking up information related to auto battery revive . Because I have a guy here in Korea who invented "chemial solution, called -ECO2".I tired to find any other information related to liquid solution available from othe inventors. You may visit site. www.eco2.co.kr. for more details. ( Sorry that its site is in Korean language yet )I also saw sites like, www.batterydoctors.com. , and www.batteryequaliser.com .These products look very similar to ECO2 . But Korean inventor insists that his formular is better than any other inventiion. However I did not get any data or evidencing paper on the comparison yet.

Above sites show how to use chemicals to rejuvenate old batteries which are weak from sulfation of lead plates. When the lead plates are shedded,broken, or physically damaged in case or any terminal, above material does not help you. But if you have been using your batteries for long time( 2years or more),you may buy a small size bottle of chemicals and can extend the battery life. The ECO2 inventor also made some charger/discharger which shows digital data on its panel.

I visited one factory which is using Korean ECO2 solution in south part of Korea. They were reconditioning the waste batteries. They sell those reconditioned batteries at half of the new battery price.This factory has a site,www.powertech.or.kr. They may want to sell the reconditioned batteries instead of selling the liquids.

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Participant

Join Date: Apr 2010
Location: South Korea
Posts: 2
#22

Re: How to Recondition an Old Car Battery

05/05/2010 3:11 AM

I happen to visit this site and find useful information about the reconditioning an old car battery. I see basically two desulfating methods. One - pulse technology as noted already by above and another - chemicals. Here in Korea we have many desulfating conditioners of professional use from more than 6 reconditioner suppliers. Everyone claims his method better than others. Restoration rate is variable, from 10-20 percent upto 50%. Many merits such as (easy to use, simple, wide application,very quick in restoration like 6-20 hours depending on the type of desulfators. But some limits seen with this method. Chemical desulfation methods (,BATTERY EQUALISER, EDTA, BATTERY DOCTOR . ECO2 plus PROCHARGER) are available in Korea too. I experience, Chemical desulfation plus electrical desulfation seems very efficient. I saw chemical of 60cc in a small bottle put into my old battery. It was over 4 and half years old. It was completely discharged because of ignoring it long period. The repair shop put the chemical then he connect the battery terminals to the charger's terminals.The next day I had it installed. I ran my car about a month . My car runs good.It is good to learn that an old car battery can be revived either with electric pulser or a chemical. There may be a slight difference in performance or quality . But those methods are saving cost of buying expensive new battery. I was told that 70-80 percent of all waste batteries can be revived by chemical plus electrical desulfation.I paid 50,000won(approximate USD45 ) including installation . I might have to pay 90,000won(approximate usd82) for a new battery for the same brand.

__________________
Charles.KIM
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Anonymous Poster
#23

Re: How to Recondition an Old Car Battery

05/16/2010 2:28 AM

at least guest knows something more than some of the other people on here that have absolutely no idea about how to reco an old battery. anyone can reco an old or dead battery with a bit of common sence and a box of epsom salts or a product called batterylite

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Anonymous Poster
#24

Re: How to Recondition an Old Car Battery

05/18/2010 5:20 PM

My friend and I have tried the methid using epsom salt to recondition batteries,, we have done appx 25 - 30 batteries and have had about a 90% success rate. newer lighter weight batteries dont seem to respond as well as older heavier batteries...about 70% of the revived batteries have lasted one year so far, but are beginning to drop out....we did not ever empty the epsom solution out of the battery once it was put in...my understanding is that the magnesium sulfate helps by increasing the conductivity of the water/acid and by lowering the resistance as well....I dont know if it cleans the sulfation off the plates or not, but i assure you that it is a highly effective method of getting another year out of a battery...at very little effort or cost. it will not work if battery has a bad cell, but weve pulled batteries that were sitting for at least 2-3 years in the dirt and they have worked... thanks for all the info on this sight,,,=)

Mtdewcougar

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Participant

Join Date: May 2010
Posts: 1
#25
In reply to #24

Re: How to Recondition an Old Car Battery

05/28/2010 2:33 AM

Dear Sir, We are using UPS ( un-interrupted power supply) with two batteries 140AH as there is heavy power failure in our area. We use UPS for fans and lights in power failure time. My batteries got week as the UPS was not tripped and keep on charging. The full charging volts are 28 V at which the UPS shows that the batteries are full. But now the voltage is 26 and the UPS not showing the full condition and continuously charging the batteries. I followed your advice and put the Epsom Solution in one of the batteries as a trial but I did not get the results. still the volts are same as 26. Is it possible to get 28 volts. I am ready to change the current water by Epsom solution. Kindly advise

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Participant

Join Date: Apr 2010
Location: South Korea
Posts: 2
#29
In reply to #25

Re: How to Recondition an Old Car Battery

10/10/2010 12:51 AM

Dear Mr Ahmad,

Regarding the epsom salts,we understand that it is working as a desulfating chemical for a long time among the curious researchers.Epsom salts is working but less effective and taking a quite a long process. Our chemical is more effective than Epsom salts. Our checmical is a mixture of three different materials. We named it as ECO2.ECO2 was invented for the professional reconditioning industry. Now it is used for mass scale business in restoration of any lead acid abattery.

ECO2 is used as an additive for desulfation. After refilling distilled water( when it is short because of evaporation) you put our ECO2 to the cells. Proper dosage is 10cc for the cell of 2volt/100Ah. If you are using 140 Ah 28Volt, we recommend you to put 14cc to each cell. Total rrequirement will be 14 x14= 196cc for 14 cells.

ECO2 is good for SULFATED weak batteries of lead acid type. When the lead plate is sulfated heavily usually it does not "take charge" and its capacity seems very low and quick to discharge. Assuming that your battery has sulfation,we recommend you to use our ECO2 instead of epsom salts.You can find more information on www.eco2.co.kr or www.snpenergy.co.kr

If you need more details about our ECO2, you can send inquiry to my email. davd@chol.com or send fax to 082-2-543-2705 .I am working as a salesman for the producer of ECO2 and electrical desulfator.

Kim.

__________________
Charles.KIM
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Anonymous Poster
#30
In reply to #29

Re: How to Recondition an Old Car Battery

10/23/2010 11:16 AM

i have used plain baking powders not baking soda meny times and it works

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Participant

Join Date: Nov 2010
Posts: 1
#31

Re: How to Recondition an Old Car Battery

11/03/2010 11:23 AM

HI, ITS SHAHRUKHSAAB, epsom salt is ionized in mg and so4 ions .mg+ ions tend towards cathode and find sulfates ions attached with lead electrode. it reacts with so4 and again ionized thus on passing current,slowly sulfation is reversed and gravity of the battery is restored 1250-1300.

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Participant

Join Date: Dec 2011
Posts: 1
#35

Re: How to Recondition an Old Car Battery

12/03/2011 4:18 PM

thats great guys xd. But where can i find the old abandond batterys?

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