Restore a 12v dead lead-acid battery, YES IT WORKS

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[Niku]

This will work for a small amount of time cuz inside battery the cells r oxidated if u really do a good job u need to desulfate the battery with high current like welding machine and switch a few times the liquid inside till the oxidation on plates r gone

[alexpg]

if there is zero sulphuric acid and only distilled water you will get nada Volts..not even 1.. Se3cond point. Acid will take a while time to cause damage to yourself (skin), but it does stuff you. I've worked with hydrochloric acid for over 40 years on a daily basis without using any safety gear. I can no longer live in a cold climate as my skin absorbed the vapours and now my finger tips go black in the cold and hurt. My lungs are also fkd (never wore a mask) and the fumes burnt my insides. I'm old school thought it was tough not to wear ppe or safety gear and now I'm suffering, yes it took a long time, but you only need to get caught in a vapour cloud once and damage is done.. Sorry about the long winded comment but im just trying to explain how important it is to wear safety gear. BE CAREFUL HANDELING ACID

[christopherleubner]

My technique is super simple. I open it up to get to the cells. Then make a boiling hot solution of potassium aluminum sulfate AKA alum. Then while still piping hot inject 1 or 2CCs per cell. Next I add distilled water to top them up over the plates. Then wait 24 hours. Next apply AC through a 100W light bulb to the battery till the bulb lights brightly. Next add a diode and give the battery DC for 15 minutes and charge normally. If it goes to high voltage very quick or fails to light the bulb the battery is dead. Helps to put the battery in a glass pie dish when doing the initial sulfation breaking and charge with the lightbulb. You can scale up to do bigger batteries the same way

[trapsta]

It wont stay charged. Ive never had one fully recover.

[nometalgearr]

Did u check under load performance of the revived battery?

[MrJerrybnapao]

Do you advise to use this revived battery together ( in series or parallel) with newer batteries?

[jamesbeemer]

Do you want to restore a lead acid battery for sure ?
You must remove the old electrolyte, clean out all the old mineral deposits, some of which conduct electrons from between the plates, the. Reassemble the battery, and put back new electrolyte .

[lorddiablo]

I've tried the same method to my jump starter battery which has been dead for about one year. I used battery liquid bought from Auto Zone instead of distilled water or rain water. I also used the harbor freight charger like yours, but even leave it charged for 3+ hours, the voltage only stayed about 7 volts. Afterward, I also charged it over night but there is no gain of voltage .... So, I wonder if this method really works ???

[SFitzy-msvs]

Does this reduce the capacity of the battery? If I used a battery acid solution instead of water, would it retain it's original capacity?

[a.g]

So i have a similar battery, from a ups, 12v 7.2AH/20HR . So the story goes, i had an old ups i wanted to use, i left it to charge for 8hours roughly, The ups didnt get charged at all and it also heated, ALot . I took it apart to find the battery really hot and not holding charg at all . even after 8 hours of charging it had only 1.6 V . So i watched this video followed everystep. I used distill water i got from the hardware store . i put water in the battery waited about an hour before charging, while charging, i connected it back to the ups board because i dont have a battery charge. and like he said while charging i didnt put the caps vback on yet because of the gas build . so i connected it to the ups and it started charging, and very soon the water started bubling, very hot and started to overflow and flow out of the batter hole and this is being done in a well ventilated area but i ca definetly smell some sort of chemical in the air, a tiny hint

[jj-ttgl]

THANK YOU, your video how to .I have hope now my 12 v battery jump starter

[chimwemwemartin]

Can we use rain water.. and I have a gel battery are they the same?

[strtkempo]

What do I do if it is heating up? 12v 4ah. I'm running another 12v POS to POS and neg to neg.

[Rehobothrabbitfarmloveu]

Please, what is the name of the charger you used in charge ir sir?

[FlyMeAirplane]

I notice the gloves you don't have on!

[ahmedtounsi]

this kind of batteries doesn't require acid or water like you did

[russchadwell]

Almost worked.

Went from 3 volts to 11 volts.

The Simonini starter needs 12 or slightly more volts. Starter sort of moved, but no full starter engagement.

One cell is totally dead. A short down in the bottom somewhere, apparently.

Saw a video on cutting apart the battery to rebuild the cell, but that seems to require welders, plastic reforming, fresh battery acid, new plate separators, stuff like that since you'd basically be rebuilding part of the battery after completely draining and cleaning it.

Looks like, if there is nothing else I could do instead of all that, I'd be better off just buying a new battery.

I am such a "consumer"... not a genuine technician at all, apparently!

Lol.

[chrisnothnagel]

You can't....trust waste your time...

[petruse]

A snake oil promoting clip. If Pb battery is old and half dead/dead the plates will be irreversibly sulfated and no charging in the world is going to bring it back to life.All magic procedures using MgSO4 are BS and replenishing missing volume of electrolyte does nothing.Yes, you might reach 12V or slightly below.However it is about VOLTAGE and CAPACITY and a "recovered" battery will die within minutes.All warnings about H2SO4 at 33-34% are greatly exaggerated .One can stop one's finger into battery acid for a couple of seconds, rinse it and observe no damage

[renec]

What i see in the messages, is not worth it to do this process,