Can you regenerate a dead power tool battery?

I have seen this on youtube but didn't believe it. As I have two dead batteries I thought I would give it a go, nothing to loose! As it turned out, after the video the second one died again so both were still dead! Conclusion: It might work for some but not for me. #GaryHuston #Blacksmithing #Farrier #ASMR #Horseshoeing #Fabrication #Ironwork #Hoofcare #welder #repairs #horse #farriery #engineering

[@davidlang1125]

I don’t understand why there are so many angry, negative and abusive comments here! This guy is testing whether old batteries can be revived using a solution posted on KZbin. What’s so wrong about that? This was helpful. And I appreciate this guy’s effort and generosity. There are some very angry, stupid people out there who do nothing but abuse others.

[@davidlang1125]

@uporn.commAndy White did you try this method? What happened?

[@davidlang1125]

@uporn.commAndy White but how do you know it doesn’t work? Direct experience or based on understanding how batteries function and decay? Im president of my own business but that doesn’t substantiate my opinions.

[@greasydot]

Pull the old batteries apart and go to a hobby shop that sells RC cars and planes and by new batteries put them back in yourself. I have been doing that for many moons

[@patthaugen7511]

Nothing ventured nothing gained. WAY TO GO!!!

[@gweedomurray9923]

Worth a try. Thank you for doing the experiment.

[@usaaudit5051]

Wear eye protection.

[@jamesstanlake4064]

This illustrates why I have a special love for cordless tools. The tool companies now have this racket where you buy the tool and it doesn't even come with batteries, why? They want you to buy all their brand of tools and ALL of the batteries never seem to last nearly long enough to seem worth it to me. I live in the US in the desert and the heat in the summer kills a battery in no time. Corded tools are harder to find but when you do find them they run for many years; now that IS value! My rant is now over.

[@theelectricmonk3909]

It does work, as Griffon points out, you need to give it a significantly higher voltage than it needs, for a brief period (10 seconds sounds good). Most welders (including arc) are fairly low voltage, very high current.... I used exactly this technique using my TIG welder, which puts out about 36 volts, on a 9.6v NiCad battery. I wouldn't say it rejuvenated it... but it did give it a few more charge cycles before it died again. Note that this will ONLY work on NiCad batteries (and maybe NiMH? Not sure about that one) - Whatever you do, don't try it on a Lithium battery, unless you like fires... Also, just a quick comment; right at the end there, the flashing red light was the over-temperature warning, not the "your battery is broken" warning. Blasting it with high voltage will cause it to heat up noticably (the longer you blast, the hotter it gets); so maybe it just needed some time to cool off before you charged it? Last comment: If you want to test one to destruction, do it outdoors & downwind... Cadmium is extremely poisonous, and Nickel isn't much better...

[@mitsuoo1012]

I did tbis about 15 years ago to my drill batteries. This makes batteries like new holding charge for a while!

[@dongletreehenley9744]

I too had 2 of these type of battery's that had a similar problem,so I got my 20 watt solar panel that had a connector that I could use the full power of the panel and charged it up until it read around 16volts..then placed it in the charger and this seemed to work!...also used this technique with a bosh strimmer battery that was dead and would not charge..it brought it back to live too!...so try it and see if it works for you!

[@peem1244]

'You can't trust anything you see on the internet...', yet here you are!

[@roythersby3442]

i recovered old tool batteries by taking them apart and finding the 1 or 2 dead cells, replacing these cells make the battery fuction again, if you take your initially fried battery a part there will be good cells in there, use them to replace the dead cells in the other battery. these cells can be found by removing them from the circuit and testing replacement cells are available from Ebay at a nominal charge my friend next door from Andy Tool Hire replaces his dead cells this way and as he said extra working time is cash in the pocket. but for working guys less expenditure is a return on the investment.

[@vetterfellow]

I can appreciate this how to vid. I'm looking at two dead batteries that I have here. I may still try this method with a 12volt battery. Thanks Bud. Cheers !!***.

[@rogerferris3720]

Wow! I just watched this and then went on to read some of the comments, why so much hostility? people. The guy just decided to attempt to rejuvenate his batteries, and give us the benefit of wether his method works or not. Chill!

[@justnoted2995]

blah

[@alanwaggett862]

the reason the batter will not charge is because the voltage drop to low, the way to fit it is to take apart and connect a good battery in parallel for 15 sec

[@mechtech8066]

Good video Gary I can tell your a proper old school engineer like me.. if these so called fixers on here actually took the time to strip a Makita 1.3amp battery they would realise you can’t get the cells out to replace and solder on the top side without destroying the positive and negative connecting tracks.. they were designed that way. Otherwise Makita would of sold the cells as replacements but they don’t cos they wanted you to buy a new battery. Simple economics gentlemen and ladies and all the other genders.

[@GianfrancoFronzi]

I have used this method and it works but I just tapped quickly with the welder not held it for any length of time. I think he might have fried his batteries by holding it too long.

[@stevebright6992]

Youll blow any battery with an arc welder held on it for 1 second never mind 6 or 10 seconds your supposed to just spark it 6 to 8 times and it works

[@johnsutcliffe4148]

I did my Ryobi batt. With a 12 volt car charger both now work.

[@G-gnome]

Picked up a spot welder for less than 100, bought the replacement cells (Read reviews and seller feedback). I didn’t have to change any tco’s. Way cheaper than OEM and now I have better mah. Did both li and nicd. The only batteries that were a pita were the milwaukee 2.4v and making 9.6 bar type. It has to be carefully broken open because it’s a sealed/clamshell type. I used a resin glue to hold it back together.

[@tambell6270]

You could try opening the battery holder and replacing all the individual batteries !

[@JamieTransNyc]

Another option..... you CAN buy replacement batteries for inside the battery pack. There are many tutorials online about how to test each cell inside, and then replace the defective ones.

[@alankopitko1611]

Back in the 80s as a model aircraft flyer we used Nicads ...so we had a talk from a top battery scientist he showed us how to revive a nicad ..... use a 12 volt battery and put negative too negative and positive to the positive on the nicad ...just flash it like a second at a time, now apparently this burns the crystal build up on the nicad. you can do this on a battery pack by shorting each cell. it worked for me on an amature radio battery that would not charge.

[@99marilena]

Worth a try

[@yuvgotubekidding]

After watching this I'm knackered.

[@ronaldtrisler8251]

N

[@stevewyatt3339]

I call this CHAOS CONDITIONING, I use household juice most of the time

[@tinkeringinthailand8147]

It can work if you pulse the charge on the charger. It worked on my old De walt, I plugged it into a socket with a switch and repeatedly turned it on and off for around 30-40 seconds. This method rejuvenated my batteries for around 3 months. However, it is only a short term fix. power tools do not (intentionally) last forever :)

[@samcentini9942]

OK here's my two cents worth, (Im American, don't know yours unless a quid or pence), anyway I had read an article that used the same method as this guy and I tried it, I had 8 old NiCd batteries to try it on, I took my 200 amp hobby welder on low voltage and did not hold it on the positive constantly as this guy did, I held it on negative constantly but brushed across the positive 10 to 15 times, I had luck on recharging 3 and no luck at all on 5 of the batteries, again my batteries sat a while before I tried this but I'm still satisfied with my results, If you only have one or two batteries to try it on don't count on a happy experience, thanks you all.

They are not 'old' tech here in Canada - I just found 2 basically seldom used Makita's PA12's with 2 batteries in each case, in the recycling.. they were sitting right on top in the Makita Cases... ready to be taken back home.. people have so much borrowed money here in Canada.. they buy up great tools, and then just junk them when they are done with their little project.. and you find this stuff.. the batteries don't flash as bad..but 2 of the 4 don't charge to capacity and run out in 3 minutes, so I'll be 'flashing' the whiskers out of them.. you can do it with a DC car charger as well.. the welder is overkill..but if you have one, use it. :) A DC digital PSU from a computer will work on smaller batteries.

[@smokin6951]

I just brought 2 20 year old 18v batteries back to life using a hobby charger Hitec x1 AC plus (discontinued but they have newer similar) using the charge/discharge function 5 times in a row

[@letrainavapeur]

I have successfully recovered NiCad cells with higher voltage burst across them, theory is that "whiskers form in the cells shorting them out and a splash of higher voltage blows these whiskers off. Only had success with dismantling the battery and dealing with each cell individually while still in circuit, normally only of them one shorts out. I built a rig with a few capacitors of several micro farads for a bit of current, charged this up to 24V and splashed it across the cell with a couple of needles made from TIG filler wire, it was successful most of the time. A 500V volt Megger has very low current and wont build up the voltage into a short.

[@edmundverwey617]

I put 18650 batteries in two of my old cordless drills, used them until drained and charged them with the regular charger. No problem, still using them. This was about 8 months ago.

[@krisgreenwood5173]

I pout a battery in the freezer over night and then put it in the charger the next day. At some point in the recharging process it liked the battery temperature and it recharged. It didn't last many days longer but it got me through for a few days. Our local batteries plus rebuilds the batteries. I have several batteries packs I have had rebuilt.

[@troyjackson9402]

I once tried the bit where I stuck a dead Ryobi battery in the charger and plugged and unplugged the charger about a dozen times. One battery came back to life but another one did not.

[@sinisamilisavljevic8833]

Couldn't find replacement battery (NiCd) for my old impact wrench, new model batteries didn't fit. So, I've bought the cheapest battery with the same cells inside and used them to rebuild my old one. :)

[@stephenarling1667]

There are also a few sources for high-current sub-C NiCd cells with solder tabs to build replacement batteries. Of course, the tool's battery shell should be of a design that can be opened and reused (like the superb older Panasonic 12v tools), rather than ultrasonically welded to make them unrepairable.

[@galja6889]

Great try! I have had good luck with off brand replacements

[@aldo9535]

NiCd batteries can form 'whiskers' of cadmium inside which shortens the battery life. By hooking up a higher voltage (=higher current) for a short time the heavy current melts the whiskers and gives some function back.

[@markh4926]

Hence, placing it in the freezer...thanks for your support.

[@BeachsideHank]

Thing of it is though, the drill itself tends to be capable of years more life. I've resurrected several found roadside, my favorite is an old 12 volt Makita, I run it from a Ryobi 21 volt Lithium battery, nearly twice the voltage and no problems- I haven't bought a battery drill in years, keep finding the orphans. ☺

[@Napflorida]

As Alan said below the NiCad type of battery develops small crystalline spikes which shorts out the battery and makes it nonchargeable from the standpoint of the charger. A short surge from the welder will vaporize these shorting spikes and the battery will be usable again. This makes these types of battery's reusable for a while. Good Luck

[@justiceprevail1552]

I have Worx lawn trimmers that use the type of battery in the video. I had a few that I was able to charge for 6 years, and now I'm lucky if a can get two seasons out of them.

[@rabwoody264]

Interesting!! I've done it with a few batteries but you need to just flash it do not leave it on or it overheats as yours did flix flix test flix flix test..

[@joegaynor438]

thank you v much ,I have set of var Makita tools , same problem , must try

[@singtracks]

I've bought a couple of knock of, s from ebay and they are working well

[@stephenjackson4392]

Safer way i found worked for mine was to take one good battery and run leads to from positive to neg to the bad one for 2 mins then charge the bad one It works

[@lt.ripley1590]

I can't ain't got a car but it gave me a good giggle. Pity I really could do with my strimmer battery charging. The worst part hardly bloody used it.

[@tripjet999]

...nor decent grammar.

[@carlosgaray3433]

hey gary nice video, nice try , I had an old drill with dead battery , so I bought another one with same battery charger , and try the old one onto the new charger and guess what is charging like new , you might or anyone for all I know can use this trick . so I have the old drill and battery from about 6 or 7 years working like new.

[@jacobbellwood6184]

One way is charge the good battery, then with that and one dead per time you connect both positives and negatives on to each other, not positive to negative, and give them at least 5 minutes for the dead one to get the volts up as the charger will only charge when the battery has volts in it. This Is more often the case as the battery doesn't hold the volts when it doesn't get used often enough. I did this the other day with my batteries cause one didn't charge or work and now its taking near full use and charge.

[@Uchiha409]

inside these type of power packs have lithium ion batteries that is similar to double A batteries 1 or 2 of these batteries are flat dead cuz it leaked out its acids. if you are a tech savvy person, replacing those defective batteries will definitely recharge the power pack to its full capacity again..

[@rodporter184]

1.05 new lithium ion nonsense rubbish . I love this man!

[@dondayton387]

I put jumpers on both batts to put some voltage in. It did take a charge because it balanced

[@tsimmons4730]

There are places you can send the old battery to they replace the cell and send it back, or try it yourself. Loads of videos on KZbin doing that. Sometimes you can hook a light bulb up to it, discharge it completely, charge it, and will take a charge. NiCa are known for taking what's call memory, and with get to where they will only charge as much as the charged or used last time.

[@tropifiori]

I still have a drill with a cord

[@StyXSISoriginal]

A what?.....

[@leongrubaugh2418]

Or you could just go old school and use a hand crank drill.

[@richardbarber4444]

No No No, my corded drill is 2HP, try that on batteries! Use it for winching cows.

[@andybell9245]

Please don’t take the piss

[@skakpedersen]

Myth bustted! Thanks for trying- and sharing.

[@TruAnRksT]

Thing is these cells develop dendrites that short the the cell out over time making them unable to charge. Providing a high current hi-voltage charge can destroy the microscopic dendrites allowing the battery to charge again. But it is only temporary. Like L said you would be better off opening the battery and defining the bad cell instead of shocking the entire pack. Then deal with that cell. But I have to say it may work with some battery packs. You don't need a "spot welder" just connect it quickly to the mains. Ps don't blow your circuit breaker. And it must be really quick.

[@PaganWizard]

This might be a good (bad idea) Band Aid type fix to get you through a job, but it won't last. There is good news though. Many tool manufacturers are making Lithium Ion conversion kits for their older tools that many of us are not yet ready to part with. These upgrades are much less expensive than replacing the entire tool, and they will last a very long time.

[@ulflyng4072]

It's prefectly safe - famous last words

[@garyhuston]

ulf lyng I don’t know which universe you live in but nothing is perfectly safe! But in this world it’s a buzz!

[@ulflyng4072]

@@garyhuston we most likely live in the same planet. But i might come from a place w a little more relaxed humor - just maybe... But dont worry, I wont come back and I erase my like. Sorry for your inconvenience

[@garyhuston]

ulf lyng I wasn’t belittling the comment, I like your comment, but, there are a lot of people who don’t! Personally, I’m glad I work on my own, if the health and safety man walked in my shop he would walk out with a black eye or worse!

[@robertgutheridge9672]

I've hit my 18 volt dealt battery with 28 volt actually for just a very quick second wait a minute and do again. Then charge as normal To get the capacity back it works to a point

[@Big_John_C]

I connect mine to a 12 volt car battery charger for a half hour, it brings it to 12 volts and charges just fine afterwards. That's a bit safer than an arc welder....

[@GSimon850]

Its only one or two of the cells that have failed if you open it up and check them with a multimeter swap them out they are as good as new like laptop batteries.

[@jamesmana5247]

What usually happens is one battery reverses polarity. All you do is open the unit find the one that reversed itself and triple the voltage on the one battery (1 1/2 volts and charge it with 5 or 6 volts using a meter and your probes) and if all is well if will be working for awhile again, However you have fried the protection boards on your batteries.

[@artman102]

I like Ryobi tools. The keep coming up with new tools but all tools work with their new Li-ion batteries or older NMhidride batteries. And they have lowered the price of their largest battery. Now they are 2 for $99 and seem to last and last. Even if a battery sits for a year, it will still take a full charge.

[@josephheiselmann8934]

I lilke the videos repair on Ryobi batteries

[@manelicvaltierrezsr3085]

Theres a guy on You Tube called Frugal Prepper. He explained why this works and saved 3 batteries. He said just touch it real quick and not to hold it cause it will blow up

[@Charles-lm7ls]

You arent supposed to hold it on there for a few seconds at all....just touch and let go a couple times at most. YOU should also have safety glasses on as well incase the batt pack explodes.

[@timothylongmore7325]

That's crazy mate. Just use a 12v charger. Throw a bit of a charge in it. The battery is flat and the charger won't recognize it. I gotta admit I haven't tried it myself.... but i saw a video and that guy made it work.

[@GOLDSMITHEXILE]

AWW a shame it didn't work! I was really hoping it would of. I have the exact same (18 volt?) ones for my well used well loved and very reliable drill drivers, which I really didn't want to replace because the batteries have gone all senile on me the last few weeks. Still I've had them around 8 or 10 years (screwfix deal) so maybe shouldn't complain

[@MarcMallary]

You might be able to replace the cells inside or maybe combine the best cells of the three battery packs, into one or two packs.

[@garyhuston]

Marc Mallary yes you can replace the dead cells but they are quite expensive so not really worth it. This is nearly a year old so they are long gone and replaced with a new set of Bosch li ion tools as I already have several so they all match now!

[@brianfretwell3886]

Just burns off threads of metal between plates in the cell, sometimes it works. Been doing it to AA ones for years.

[@gd515051]

All I have is this defibrillator that puts out 1000v. Let’s give it go!

[@landroveraddict2457]

I have a bunch of old 14.4v and 18v Elu gear with dead batteries. I got a pair of copies from ebay that claimed 3ah. They are not 3ah but they are as good as the original 2ah Iv'e been running them for 4 months, very pleased considering they were £15 each. At that price it's hardly worth breaking the originals to find the good cells.

[@dmoore5120]

My problem with DeWalt batt pack is that it will 'take a charge' but then runs out very quickly - not refuse to charge - suspect traditional NiCd problem of taking a 'set' if not fairly fully discharged before charging - my use is usually fairly short & far between. Different problem?

[@welshpete12]

I do not know if they are still available but you used to be able to buy D size NIMH batteries. Which were the same size as they used in series in these power drills . If so you could make up your own packs .

[@Old-DrO]

Works if you put the charger on the battery. Then pull plug out till off then immediately plug in again very quickly if shows red instead of the green orange it will charge. I have a ryobi battery that has lasted over 5 years and this works. its better to just charge the batteries up every once in a while if you dont use them so they dont fully drain!

[@oldmanfromscenetwentyfour8164]

I'd rather see someone convert cordless tools turned into corded tools. Some sort of plug-in adapter where the battery plugs into.

[@koitorob]

Cool cap!

[@beingsneaky]

i seen other vids. you have a higher volts then the battery. and only Tap the battery not hold it there. tap up to 10 times? well more if you want. tap not hold.

[@365geo]

You may have fried the circuits. I think the reason it didn’t work is you might have had the welder amperage on too high. It works for me and phone / camera batteries when I connect a 9v battery for 30-40 secs. It is a technique that is used to forcibly charge the battery when the peak charger won’t. Nickel cadmium batteries need to hold a slight charge in order for the peak charger to start charging them.

[@agona-piesie6604]

Good education, am watching from Ghana

[@garyhuston]

Thanks for watching

[@hvacworkshop4791]

I did almost same as Dave Rogers commented below. It worked pretty well. I guess you have already damaged cells. You may take out the cells and buy new cell from ebay and weld them back.

[@davenelson9253]

I have my batters replaced with new celes!

[@nasiraltahir5068]

Thank you, but did'not check the second battery to show it not working, before apply welding machine power

[@garyhuston]

Why are you so stupid? It failed! Why would I wreck a good battery to show it doesn't work?

[@lincolnthinking]

at least you gave them a try. (O:

[@JohnDoe-bd5sz]

If they are NiCD batteries, chances are you can revive them, but it takes a bit more work than what you did. I worked in a place where most of the instruments had battery backup for obvious reasons if you knew where. Problem was that these were usually plugged in most of the time and only ran on batteries if attached and set up and the power failed. This means that the batteries were essentially never discharged and recharged. We took the faulty packs out and replaced them, as the instruments were vital and could not have revived batteries in them. Most of the time one or more cells had totally shorted out and the way we revived them was to take a DC power supply, crank it up to the maximum 60 Volts it would do and then we would connect minus to minus and then put plus on for at short time, remove and put it on again. After some time, most of these cell's would have the internal short, burned so that the battery would not be shorted. As soon as this happened we had a battery conditioner unit that did a 40 hour cycle where it slowly charged the battery, discharged it to minimum voltage and recharged again. It did this a few times and on the last charge it measured the capacity of the battery, and 99/100 of these were over 90% of the capacity, printed on the battery. Your NiCD batteries are probably the same, but since you try to shock the one or 2 cells that are shorted thru the rest of the "good" batteries in series, it will not work. If possible take the packs apart, measure the voltage across each cell, and on the ones that read 0.0, measure ohms. If it says shorted, apply the welder for short bursts to that individual cell and it might revive it. When it does, use the charger to charge the pack. The reason it blinks is probably because the battery voltage is too low. When one or more cell's are shorted, the maximum voltage that you will get will be lowered with 1.2 Volts and the charger can detect that the voltage is never going to what it expected it to do.

[@williamoneill7693]

D

[@killingoldgrowthsince]

LOL

[@HorizonsleatherBlogspot2012]

I've had far too many Lithiums go dead on me and they won't charge, so I went back to the old NiCads that I've used for decades. Cheaper, and a bit heavier, but worth it.

[@markh4926]

An easier way to do this 'resurrection' is to first discharge the old battery. Then put it in the freezer over night. Place your charger upside down beneath a shelf or whatever and tape the battery in upside down. Next take a strong magnet and fix it under the battery, then plug it in until charged. This will change the poles inside the battery and it will be like new. I tried jacking the last battery with 120 volts like the guy did with his welder and the f'er just blew up in my face. I had a ski mask on so I'm ok.

[@mitsuoo1012]

Yes you can! Use jumper cables connected to car battery and jump the power tool battery

[@markoneill9346]

Bloody genius, all my old tools are working again, even the tools which I bought to replace the ones that weren't working, what the he'll am I going to do with all of these tools now 🤣

[@clarkkent7821]

It might be me but was there proof that the welder was on.

[@shortwavesinpoland8368]

Nice video. Greetings from Poland.

[@cassidypilcher9657]

How to star my 99 gmc and unlock the steering

[@Cornz38]

All you do is blow the protection circuitry. The myth is that it destroys the "tendrils" that cause Nicad to fails. This DOESN'T work. All you do is risk having batteries explode in your face.

[@smythie08]

Lucky to still have 2 hands

[@brianjones4387]

You should only need to flash it and try it with pos and neg the other way round. I have revived my dewalt nickel metal batteries, they are 24 v

[@stuartsjalund6912]

Regenerate a power tool battery? Yes. The "secret" that is not told about batteries is they have internal resistance! As time is put on the battery, internal resistance rises for ALL batteries. As all (as far as I know) the OEM highly regulated chargers given with your spanking new battery tool will not compensate for rising internal battery resistance. Soon the charger current to the battery will be so low or non existant that owners will buy a new battery. Mission accomplished! And your OEM charger will recharge your new battery! All rechargeable batteries should be charged with DC voltage directly off the power rectifiers. No filters. Use a variable resistance in series with the rectifiers to adjust charging current. Use a dedicated amp meter to monitor current at all times. Did I tell you? Output voltage should be about 20% higher than battery voltage, but can be higher if you have the resistors to reduce battery charge current to acceptable limits. It is always satisfactory to limit charge current to 10% of the battery A/Hr rating. It can be higher if you know what you are doing. Battery heating is normal and indicates that the battery is fully charged. Battery voltage does NOT indicate a full charge. Only heat. And to bust your bubble, batteries are nothing more than a variable resistor and a capacitor across the terminals. For example a 12 volt battery should have 14 or more volts to recharge, about 20% higher than battery terminal rating, and CAN be higher if current is too low for satisfactory recharge. We used to charge 48 volt lead acid batteries at 68 volts, no problem, just don't get sloppy with current flow! Happy Motoring...

[@roymalvitz5581]

No

[@NeverSuspects]

unfiltered dc from the transformer supply right off a bridge rectifier would be pulsing as the filter caps smooth the gaps out where the positive voltage drops as when you convert AC or alternating current that is a sine wave of the voltage from positive to negative to dc over a diode bridge rectifier you are using the diodes to direct the positive and negative periods of that AC sine wave either negative or positive and this leaves the gap where the negative was on the positive DC source. Rechargeable batteries are chemical reactions where you reverse the chemistry that takes place that stores energy when you charge them.. They are not resistors with capacitors. Resistors will limit current through them, capacitors store current. You use Constant current and constant voltage power circuits to charge battery that will be set to over time change those rate and values depending on the battery chemistry and capacity. So I agree with Roy and will also tell you "No."

[@cheyennedimarco3227]

what he said...

[@15thstreet60]

I have been informed by a specialist battery store source that if the battery has an overcharging safety feature incorporated in the design what can happen if the battery sits on the shelf for too long and the voltage drops below that required for the safety circuit to function the battery will never charge from that point as the safety circuit needs to be operational for the battery to charge. This happened to a camcorder I own that was stored for about 5 years. This is disappointing news as a perfectly good battery otherwise has to be discarded just because the safety circuit cannot be reactivated.

[@JohnHill-qo3hb]

Spring for the LiPO system, Ryobi, their tools and charger will work with Lipo and NiCad.

[@Hockeyfan9884]

Without any Personnal Protective Equipment, if the battery blows up in your face , is there a possibility of injury ??

[@frrapp2366]

we have a company that is called (Allpac)(central us) that carries all different types of battery(cells) that you can buy to rebuild your battery pac or they will do it for you at about 1/2 to 1/3 the cost of a new pac

[@davidvincent1093]

Believe it or not you can take them to Batteries and Bulbs Plus and the can rebuild them! I did not know about that until the other day when I was in the store to pick up a specialty bulb I ordered and a woman brought in hers to exchange it for a new one. Of course they did not carry it (OK so it was a Harbor Freight 12 volt OLD!) but told her they would rebuild it and guarantee it as new. The cost would only be $49.99 and she agreed to have them do it. After she left I asked the sales staff about it considering she could have likely found a new one at Harbor for $20. He told me that it is quite common for people to trust their rebuild over a new one. So I guess you personally have to weigh out the value to you to replace, rebuild or upgrade all the way around

[@ralitodiestro4510]

N

[@davidvincent1093]

@Preston McDonald agreed

[@johnmetson7950]

Dismantle the battery you will find their is a dry joint on one of the links between the battery cells use a medium sized soldering iron toresolder the broken joint

[@johnti8603]

a buddy of mine had to be taken to the hospital yesterday after trying this. Hi fortunately only had a cornea abrasion on his left eye and will be fine. but the battery imploded!

[@garyhuston]

John lol! Idiot..

[@majwor3763]

Did it implode (fall into itself) or maybe explode!!!

[@justmedontknowdoyou7860]

As far as taking a battery to BATTARY PLUS for a rebuild. From my experience it cost as much to rebuild as buying a new. And it doesn't last very long

[@kiesesoza]

Brilliant buddy :-) I have a SENCO dry lining drill&auto feed driver set and my charger says its faulty fashing similar red to green as your duff batts but if i leave it to charge for 4 hours (of course not convenient) she charges up like brand new! Ive seen same videos on youtube but no one ever considers there chargers are faulty right? So anyway anyway has the battery got a new lease of life and keepin on keepin on or was it a 1 time thing mate? Cheers

[@Appregator]

You have got to turn the current down to minimum otherwise you destroy the batteries forever. The idea is that the NiCads develop a memory which one breaks up with a higher impulsed current. But too much current and it kills the battery. I would turn welder current down to minimum and tap electrodes 2 to 3 times on the terminals. + to + and - to - if that is not obvious.

[@leonerbonne6251]

Appregator (

[@jamesbarratt593]

Weird to think that would work.