Well, My Good Friends and Awesome Subscribers, You asked us how we renew maintenance-FREE batteries, well here you go..share this video with everyone you Know! Quote of The Week: *We have more Facets of government than is necessary, and too many parasites living on the labor of the industrious* Thomas Jefferson

Hey Mike. I finally had the chance to do this for the first time, a few weeks ago. Because my own batteries are AGM's I had to wait for a dead lead acid battery. My father-in-law's one died and I used your method. And it works again. It's a great tip. Have a great week. Dutch regards, Nico.

I remember de-gassing lead acid batteries back in HS in auto shop (that's what we called it). I never knew the maintenance-free batteries could be opened up like that. Thanks. 👍

Excellent video. And, it is ALWAYS a good day when we hear from Hoolio!

Merry Christmas!!! Thank you for posting your recipe for cleaning carpets. The NAD said car worth 1500 we sold it for 4200. Appreciate your channel!!!

Thank you good man, your tips are always good as gold!

Thanks Mike this is fantastic

My VW touran's been cranking slow this week and the battery's down to 12.3-12.4V. Saw your other video using a 200A charger & jump starter and was likewise checking out expensive chargers but today I saw this vid and my brain lit up in an eureka moment because I do have a welder in the house, thanks for saving my wallet!

I got the Amico welder you suggest. I’ve had about 25% success with discarded batteries on our farm. I got a meat thermometer at Walmart & put in one of the cells while it’s “boiling”. It’s December & about 40 degrees, but the temp only goes up 10-15 degrees while the battery is bubbling. So the bubbles are not from boiling, but from hydrogen gas being released. (My assumption). However one battery did get hot; thermometer read 160, so I discontinued the process on that battery. I removed the working batteries from several vehicles & did the 5 minutes x 3. So far it seems to improve those batteries. I rekin we have more than 75 batteries on the farm & in family vehicles, so I gotta get this restoration process to work. I’ve tried to restore several big group 31 batteries to put in our Kawasaki wheel loader. I got one up to 13+volts & 1200 CCA, but wouldn’t crank the big diesel, (which takes 2 in series….24v.) So I had to buy a new NAPA $300 battery yesterday & the other battery in the loader is a basic car battery that did recover. That’s in there temporarily until I can get some bigger battery restored. I’ve tried 3 truck batteries (with threaded posts). One seems to have a bad cell that barely bubbles….it reads 10.5v. I’ve cooked it at least 10 times & up to 200 Amps. The Amico welder exceeds its duty cycle often & it takes an hour for it to reboot itself. So I only go above 100 amps momentarily. The other 2 truck batteries will show 13+ volts, but weak on the load meter. I’m getting weak readings on the hydrometer on most of these batteries I’m trying to restore. So I rekin I’m going to drain & rinse them then add fresh acid/water. I get different info about the acid/water ratio….20% acid to 35% acid. I will NEVER do this trick with the battery in the vehicle. Acid usually bubbles out. As you mentioned many times, MAKE SURE THE WELDER IS OFF BEFORE DISCONNECTING THE LEADS. This welder is putting out current even if the amps are set at zero. I already blew up one battery. Now my Salvation Army jacket has holes…. And don’t turn the Amico welder off until the cooling fan stops running. And this: you guys quit asking the same questions that have already been answered….like can I use my AC welder? If that’s where you’re at, just go buy a new batt & watch boring World Cup.

As long as it works saves you time and $$. Thanks

Awesome man im going to try this 👍

Jump start battery charger also works 225 amp shocks the cells an gets them moving again great video most people don't know about this they just go buy a new battery an their getting more expensive especially in this economy.

Remember to wear safety goggles or preferably a face shield..I'll grind with safety squints but boiling batteries scare the heck out of me....come to think of it I'll retire my squints and just buy a good face shield for grinding too...and thanks for the video.

Yep, not all maintenance-free batteries are completely sealed, but you won't know until you check. This is a good one you showed. Takes more effort, but sometimes all it needs is some water and a charge, and you are back in business! Glad you brought out to use distilled water! I keep a couple gallons at work specifically for filling up batteries. 🐺🔧 I've done something similar with the scissor aerial lift at work; the operators kept trying to charge the lift. But it wouldn't work once the charger was unplugged. Batteries would have to be ordered, about two weeks out. The inspector that they scheduled was slated to come in the next day. Honestly, they had tried to charge the batteries so much that they were very hot when I got it, I'm sure their lifespan had been compromised, but I figured I give it a go anyway. Either it would work or not, right? I pulled out all four batteries, refilled the batteries, and was able to get three out of the four batteries amperage back up using the large battery charger. The fourth battery was a little on the low side for CCA, but the voltage returned. Put all four batteries back in after the initial charge on each one, then I let the onboard charger finish the battery charging overnight. Facilities were happy the lift was operational when the inspector came to do the bay doors the following day. As far as I know, those batteries are still in the lift! 😆

Thanks for the video 😊

Can you provide what features of the stick welders that you're recommending are responsible working with a deep cycle battery vs. a regular battery? For example, is there a certain type of mode that works best for a deep cycle?....and same question for the regular battery. Also, some of these welders can function at 110V vs 220V......is 220V connection required? Your instructing to turn up the amps until the electrolyte boils....but what is the common/typical maximum setting that you've used?

Hi there Mike. Can I use a flux core welder to do this?

Ive done this many times to a bunch of batteries with great success but im curious will this work on a glass mat style battery

Good video , thanks for sharing , God bless !

Great video and information.

Yeah some of our lead acid don't have those holes, have a big square top that looks removable. But with some prying seems tight.

Great stuff man! Any ideas to revive an MK deep cycle sealed gel battery on my power wheelchair? Thanks!

Thanks for the heads-up. my question is what if it is a bigger battery like a tubular. will it still require 5mins or a bit longer? and how will the adjustment on the welder be?

It would be great if you could explain what the concern is with needing separate welders for reg/deep cycle batteries. Especially when many of us already have welders and will probably try it anyway. Maybe at least explain the concern with deep cycle. Thanks!

Hey Mike I didn't see where or what increments you turn up the welder. I heard the beginning at 50. But where do you end at on the 3rd cycle? Thanks. Good work!!! How you come up with all this, must've been a lot of trial and error.

Suuuuuuuuuulfer!!!🤣HEY Hammer👋!!! I remember the video that you did with the car batteries, let me ask you a question, the battery in my Honda ATV has the holes for acid, ik coz I filled them, will this work on that battery it's been dead probably two years now. It's a smaller battery but is 12v just wondering. Hammer and Mrs. Hammer, y'all have a marvelous week my good friends!!! Much Love and Respect Brother 🙏 Be Safe and Be Blessed! 🕊🕊🕊 Jay.

Thank you 🙃

Interesting video, I always thought that fast charging a battery decreases it's life span and it's best to trickle charge it. I use a Pulsetech PowerPulse passive desulfator on my BMW battery, I have used it three years and have no issue's with starting the car even though I drive about 25 miles a week. I'd like to see you test one long term on one of your sulfated batteries, and make a video on it.

I got a new mower battery last year but,before I bought it I charged the old one until it could no longer take a charge,I mean after it sit through the winter,and then I used my jumper to jump it,I should have done that with the first 2 batteries.

Great video!!!! Tried it on my truck battery and worked great. I want to do it to my bmw batteries but I can’t figure out how to remove the cell caps. They won’t come out using a screw driver. Not sure if they are twist if so I will need a tool to remove them.

So awesome. I do not have a welder but would a battery charger work in the highest setting (engine start)? If so, should I go longer than 5 minutes with 10 min rest periods in between?

Some don't have caps and you have to drill the holes. Just be careful to put a depth stop on the drill, otherwise you'll drill through plates and ruin the battery. You can then tape the holes over with some rubber glove material and duct tape.

Thanks so much friendo! The welder was cheaper than a battery, so why not? I've got one cell that's being slow to come up. It boils. but slower to start than all the rest. I've got a thermal imager and I can see that the bottom of the one cell is colder than the rest of the battery, but I think I'm getting it, the cool spot is gradually getting smaller

Since I don't have a welder, I use the other method you have a video on using a charger set on "start" which makes the battery boil also. However, not quite as good a a welder will do but I figure it's better than nothing. Have you ever used the welder method on a battery that tested bad and then tested the battery again, and if so what was the outcome?

Hey, Mike. Can you do this procedure as a preventative measure too, let´s say for year or two years old battery?

Mike you positive there is no need to ensure one cell in a battery isn't shorted? Cause if it is....and we crank up amperage (I know there's a short protection 🙂)

If i have both deep start and standard batteries is there one welder i can buy for both ?

I have done this to a bunch of batteries and it definetly works if there's no short or bad plates!

Many thanks!

honda atv 2000 foreman with sealed battery always kept a charge if used. If sat a long while a jump and driving it made it good or trickle charging. Parents sold in 2016 when moving and it had 2400 miles on it and original battery and tires. Never de-solfed the battery.

Are you putting 90amp in it?

what if doing this with battery in an ultrasonic cleaner?

Excellent, i have a 200AH deep cycle battery.so please guide me how much current settings like how many times and minutes , time gape between them i am waiting for your reply thanks

Hi there I was just wondering if doing that with a welder is better than doing it with a battery charger that you showed in one of your previous videos?

Can you use a mig welder or just a stick welder. Thanks for the info.

Have you ever had one that boiled real good on two of the six holes and barely bubbled into the others and not at all and two of the other holes if so was the battery worth trying to save his battery was working fine six months ago and it has set for 6 months now sudden it won't take

only lead acid batteries with standard water as electrolite can be revived this way or even agm/gel batteries? But these dont have holes to maintain fluid inisde

Does this work better than the high amp battery charger method you showed us awhile back?

I've looked cheapest I've found is 120 I need to try it on my big cat batteries to replace them it costs 140 $ I've got 4 of them

Hi Mike, how do you know which welders will work?

Does it need to be a modern switchmode welder? Can I use an older mains frequency (larger heavier coil) type stick welder?

Can this be done with a non inverter welder? I have one and a battery to try. Thanks

Hello Mike. Wishing you a happy new year from Bulgaria. The contents of your battery vids have seriously impressed me, so much so that I think that this could be a business idea for Bulgaria. A population with relatively little disposable income, inflation, energy crisis and more issues than I would care to mention, this is something that the country could really use! The obvious environmental benefits are the icing on the cake. I do have one very important question. If this was done on a commercial basis then I would very much like to give the clients a guarantee on the reconditioned product. With how many months would you feel comfortable giving? 6, 12 or 18 Months? Please keep the great work going and hoping to hear from you soon. Thanks.

Great information. You said you turned up the welder to 50. Fifty wha5? amps?

I have a 200 amp charger really good one its this one Associated Equipment US20 6/12 Volt works good

Wonder if this would help golf cart deep cycle battery. Mine seem to tire out after a couple of years.😢

Question for anyone: Is the only difference between the "CHARGER" & "Welder" method the time interval? I have a six year old COSTCO battery that's just starting to show signs of replacement (slow cranking if the car isn't driven or charged in two days, longer than two days it needs a jump). I would love to try one of these methods to hopefully renew the battery. I don't have a welder but I do have a good charger so if the only difference is time I'll just use my charger.

in one of you other videos you where using a 200amp engine start charger with a car battery can you use this welder with a bigger battery and you where letting it set a hour. so do smaller sit less and bigger battery longer rest in between

I have a Hobart transformer type welder. Will it work for this, or is it necessary to use an inverter type, like you show in the "tools" section?

So aside from the 40 amp difference between the welders, why are you using the 160 for deep cycles and the 200 for car batteries?

My suv battery is a i think its called a agm a really heavy strong battery but i used it in my boat for a summer and now it wont take a full charge, i tried as hard as i could to open the top and cant find any way does that mean its the type i cant fix

Hello how are thanks for your great videos what kind of welders are they ok thanks have a great day take care cheers

I don't have a welder but I have lots of other things. What voltage and what amperage do I need to do this?

Can you hook more than one battery on the battery maintainer at a time? I do t want to buy a bunch but wanted take care of a few batteries at a time. Is that possible?

Does this work on a battery that is completely dead?

Hi dear frend, tell me can welding machine go overheat ? How is the best to do 5 min end rest? 10 min or more? I try with my welding machine end she is litlle heated...what to do?

So you must increase step by step curent. Or 5min. on max amperage. Mybwelder has 300Amp output.

Dose it work if i connect battery charger instead of a welder?

Good information! Can you use Epsom salt with this process?

So I know this is a old video but does anyone know what it means if I have one cell that doesn't bubble? Is that a short?

Can i use my old little 110 volt stick welder

Do you charge it after with a normal battery charger

Does any of this work for AGM or Gel batteries?

I see you have changed welders from a couple of years ago. Are the new welders better than the old ones or easier to use. Also what was the condition of this battery and what should shelf life be after charging. Here in Canada we only get to use them for 6 months and wait another 6 for winter to get over to be able to use again in spring. Thanks as I seen this tip from you before but it was for regular automotive batteries.

Will this method work on AGM car batteries?

Welder machine can be use battery charge?

I've followed the procedure for cleaning the inside the battery twice so far but every time I tip the mix out there is more to be cleaned am I wasting my time with this battery

Do you have to have a wilder. can I use a battery charger

As soon as I clamped negative to the battery post my stick welder began smoking. It wasn't even plugged in. Now I'm afraid to even turn it on. What did I do wrong?

My welder doesn't have a continuous dial. Is 55 = amps?

Can this damage my welder? Was that 55 amps or volts?

Can one make this work with a mig welder?

I don't have one of those inverter welders just an AC buzz box. Maybe it would be worth buying a cheap inverter welder now that batteries have gotten so expensive.

Will this work with a MIG welder?

What if the caps are all one piece sonic welded plastic? hackit up?

Will this work on deep cycle lead acid batteries

Will a Mig welder work for this?

Didn't you do this before? Someone did. Long time ago.

Why a welder, versus one of those shop heavy duty battery charger? Thanks in advance

What if you don't have a welder what do you do with a battery charger?

Can u do this to all batteries like 4 wheeler battery all lead acid batteries

Why do you need a different welder for deep cycle battery's?

Does it work on agm batteries?

Does this work for AGM?

how about Agm can they be revived

Good day sir, what type of welder do you recommend AC or DC and what should I be concerned with regards to safety? T.l.A

Great idea but probably null in void when it comes to insurance here in Australia

Your battery maintenance / rejuvenation procedure is definitely a money saver. Probably worth it if you just buy the welder for that only and never do any welding.

Would this work on a 24 volt battery?

How many volts does the welder put out