How to get dead batteries working again: EASY HACK

[@hammerandhome]

For more of Brad's super-informative HOW-TOs, check out this playlist: kzbin.info/aero/PLdLHTvhRGVxYJU70Qh9ZCGBGSTdl4UQGP

[@melaniogarcia6308]

thank you so much sir to your time,,, I'm from manila sir,,,,GOD BLESS

[@savipv8491]

can i connect 20v good battery to 18v bad battery and fix it?

[@victorriga9814]

Thanks for your reply. Agree I think they are dead.

[@caltrask2008]

I was so frustrated because my relatively new Dewalt batteries had both gone dead, I used the same principal using a completely different battery, and it revived both of my Dewalt batteries, it’s not often that the hype lives up to the name, but this is the real deal, thank you so much!

[@DisgustedGenXr]

My newest battery dies not flash when charging. Just the “2/3” light is solid. This did nothing. Typical. None of this sht ever works in my stuff.

[@70skid67]

Eeaq

[@ahmadsuliman7739]

Even worked for my 1200 amp jumper pack. Used a 5amp dewalt battery and did it twice. First time for 10 sec and tried to see if it would charge but it didn’t . Then again for 5 seconds and it then it started accepting charge . Thanks a lot . Great video!

[@johnmaughan8359]

This was a last throw of the dice for me before I chucked the battery - and it worked perfectly with my Dewalt 18V FlexVolt XR battery - thanks Brad! 👏👏👏

[@craigtrousdale5023]

Just bought some brand new 'compatible'M18 batteries and they were dead out of the box and showing as faulty but followed your clear demo and it worked first time.Now to see how long they last when charged.Thank you this was very helpful

[@evalu8r481]

I have heard of this repair before but never done it. Well, it worked for me. Thank you. Now I have time to see what other things I can learn from your channel...

[@kamora75]

worked for a Stanley rotary hammer battery. The warranty had replaced one that stopped working and gave me another one that was just as dead. Thank you very much!

[@nicolasbusse]

One of the most important videos on our (all platforms for that matter) system.

[@wesleyperkins9121]

I have 7 batteries that would not charge after the winter. I got all of them working but 1. This is a great video and useful as ever. I bet many homeowners put batteries in the garbage that were still good. I have done 18,20, and 40 volt, it worked for them all.

[@wb6242]

I had 2 Porter Cable 18v batteries that were both quickly flashing red on the charger and would not charge. Took a weed whacker battery out of my Black and Decker unit and did what he said and it worked perfectly!!! Quick and easy. Thanks Brad!

[@hammerandhome]

Awesome! Happy it worked for ya 👍

[@cps2175]

Thanks, man. Quick, clear, and to the point. I had two 5ah batteries die in the last week. Was about to buy a couple more, then googled "revive dead DeWalt Battery" and found your video. Oddly enough, a battery marked "2014" jump started two batteries marked "2019." You just saved me $100+.

[@lotsanoisy69]

Got some knock off ones to save $100+ to upgrade the kids’ cars, but they don’t always hit the off switch and it over drained the battery. Did this for like a minute and the “dead” one is now charging. Thank you. Such an easy idea.

[@justincarter2103]

I was very skeptical that this would work. I have a 2ah Dewalt battery barely used and 2 years old. Was going to throw it away and remembered this video from the past. Couldn’t believe worked. Thanks a lot!

[@hammerandhome]

That’s great! Happy it helped.

[@SedExplorer]

WOW ... it worked! I just restored two dead batteries that have been sitting in my garage for years! Fantastic! All I had was lamp cord wire, but still only needed to me jumped for a minute and then returned to life.

[@hammerandhome]

Sweet!

[@henrymcdonald6173]

Load of shite it doesn't work

[@RoderickGI]

I had seen this tip before and was a little sceptical, though I understood the principle. I had completely forgotten about it when I discovered one of my two DCN185-XE batteries, the one that had been on the charger for some time, was dead. I spent a chunk of time looking at buying a new one or repairing the old battery. The cells are mostly zero volts or a small negative value, with only one showing 0.85 volts. Otherwise, the cells looked okay. A search found your tip. Ten seconds with batteries connected, and now the bad one appears to be charging, which it wouldn't before. I'll see if it fully charges. Thanks for sharing the tip​ @Hammer and Home.

[@johnbanks8065]

Excellent video, many thanks. I gambled on some Dewalt batteries at an auction, got them home and none of the 5 worked. Tried your tip, and 3 are working perfectly now thanks; what had been a waste of money has turned into a bargain 😊.

[@Matthewgarciaa]

I rarely comment on KZbin. But since you saved me a brand new battery it’s the least that I could do! I was so frustrated! Literally out of the pack, and it wouldn’t charge! Thank you so much!

[@hammerandhome]

You’re welcome 👍

[@tmk7573]

This trick worked on my large 40v battery for my dewalt hedge clippers. I used scrap 14/2 insulated electrical wire. A tiny spark woke it up and the battery level checker on the battery flashed green 3 times then i put it on the charger and it charged to full. Battery date 2014. Thanks man.

[@ChristopherMcCann-g4k]

Worked a treat reviving a relatively new battery that had been out in the cold. Thank you!

[@vanousbrown5499]

Total had no clue. Thanks for this video. Just had this issue of dead battery two days ago. Glad I haven’t tossed it yet.

[@videoformars]

THANKS! I just did this to a Dewalt battery that I knew was in great shape but would not charge. Few seconds and the jump then placed it on the charger and back to life!

[@hammerandhome]

awesome

[@bigfunky74]

Worked like a charm. Was skeptical but sure as hell.

[@barrydeel1066]

Jumped started my DeWALT 9AH battery, your hack worked Great, Thanks for saving me a lot of money

[@hirschmj]

Perfect result and a nice demo showing how long to leave them connected. Thanks for saving my battery!

[@hammerandhome]

Thanks and you’re welcome

[@andsowot]

Used it on a 6amp fexvolt that I drained charging phone at work today. Can't thank you enough matey worked perfectly.

[@hammerandhome]

Awesome, your very welcome!

[@UserWAian]

Thanks. It worked for me. Took me less than a minute to do that After charging the dead battery is revived.

[@rtrpylut]

Holy CARP! I had a Yardworks battery with no charge indicating. I didn't have any wire so I stripped the ends from some bread ties, connected them just like you said. There was a small spark and the bread tie started smoking after just 1-2 seconds. I pulled the ties out and voila, the battery is on the charger and charging! Thanks!

[@hammerandhome]

nice! you're welcome

[@jasonleclerc7331]

Thank you! I just had a newer 9ah battery that wouldn't take a charge and this saved my battery and my frustration level 🤘

[@alim515]

I am from Trinidad and Tobago a twin island state in the Caribbean Islands thanks for teaching us how to jump start our cordless battery it works

[@georgebalbino9929]

Can't wait to try this hack on some dead Ryobi batteries I have lying around. Thank you for this great video. You just got yourself another subscriber.

[@birdbath5]

It worked for my Greenworks 80V battery. Thank you so much for posting this. You helped save me $$$

[@briandriscoll9836]

GREAT HACK !! I have old 36 volt dewalt , new battery not available anywhere , and this worked great

[@hammerandhome]

Awesome!

[@whatamistilldoinghere]

Just tried this. Worked like a charm! Thank you!

[@gnidarada]

It works. In my case for 18V batteries just a couple of seconds was enough. Used power old cable from 110v desk lamp, no issues.

[@hammerandhome]

Nice! Good too hear

[@tianxiaozhang]

Worked like a charm on my dead batteries! Thank you!

[@HierarchyOfHavoc]

I've had an issue with the smaller 24v kobalt batteries randomly dying, I thought it was the 24v tire pump because of it being the last tool I used with them. Today I had one go out and I decided to use this trick - sparked like mad and the small wires I used got hot - but it went from all 4 bars flashing to just one! It's sitting on the quick charger right now charging just fine when it wouldn't even register it 5 minutes ago. Thanks!

[@hammerandhome]

Happy to have helped! Thanks for sharing

[@COMamaBear]

Thank you! In the last few months, we had a Dewalt and Hart 20V battery die. They were replaced under warranty, but both are now alive and well with this easy hack. Yay for spares! 😂

[@forgottenknowledge8917]

According to ADL antisemitism is alive a well, as well.

[@paradoxworkshop4659]

So, I have 20/60v flexvolt that will only charge to one bar after being drained. Do I have to jump different lugs on the battery? Should I try it in a 60v? Can I use a 20v batt to jump it!?!? Brand New used in 20v tool only but now need in 60v. Thanks!

[@chief2203]

Thanks for the video and quick restart of my Dewalt batteries. 🙂

[@k0z4k13]

works!! just ressurected dead TOPSHAK battery using other skrill 20v battery

[@shudongh]

Great trick! I have a barely used Bosch 18v which I think I had forgotten to charge after it ran out of juice. It looked dead. But I was able to fully charge after using this trick. Hopefully it'll be as good as it was before. Thanks!

[@hammerandhome]

Great to hear!

[@cq-fo7pm]

Does this trick restore the battery to its full capacity or just bring it back to a chargeable condition? Thanks

[@Mac-we3mq]

Even worked on hoover batteries. Thanks alot 🙏🏽

[@blaiserobitaille1940]

Just brought a little 1.3 back to life! Thanks!!

[@fijit2000]

I owe you a beer!!! My dead battery was moments away from being thrown away! It’s aliiiive! Thanks buddy 😊

[@benjamingoossen]

THANK YOU! This needs to be common knowledge. I had no idea this was possible.

[@hammerandhome]

You’re welcome👍

[@carmendeperignat2700]

What type of wires and gage are recommended for a DeWalt DCB107, 12v/20 v Lithium battery?

[@simonbassett7792]

Just saved me £100, works perfect, cheers for sharing!

[@TheMerc1118]

Saved me $73 bucks! Awesome, thanks so much!

[@200hit]

Thanks it worked for my Grandson Razon ATV 36V Battery.. He left the Battery on.. I was unable to recharge until I tried this.. ..

[@rcm19851]

Thanks! It worked on a dead Kobalt tool battery. I was about to drop it off for recycling!

[@hammerandhome]

Great!

[@jonandres6723]

Worked perfectly on three Dewalt 20v batteries - thank you!

[@hammerandhome]

Nice! You’re welcome

[@Paddy5988]

Brilliant! It works! Just saved me 50 quid on a new battery. Thank you

[@hammerandhome]

Sweet!!

[@blueliquid2001]

Awesome! This is exactly what my battery needed!

[@Iruleyou1]

Thanks I just used a Dewalt 20v to save a Craftsman 20v for my 1 tool that needs it.

[@flyfishingpiper4976]

Great tip brought my batteries right back, thank you!!!

[@grahamhorsham7456]

Fantastic hack - worked a treat for my dead battery

[@hammerandhome]

Nice!

[@salvadorcastillo1539]

Thank you so much i fixed my black and decker batteries with your video !!!

[@hammerandhome]

Nice!

[@Firehawk-205]

Thank you Brad. I was able to get my $450 -80V / 6.0ah Cobalt battery to work again 😁👊🏻.

[@JasonFarmer1966]

Very happy - just revived a battery thats been considered dead for a year...

[@Will_Powered]

I just tried it on my 'bad' ryobi 40v i've been hanging on to for no good reason for 3 years. The only difference is, I had to leave the wires connected for a few minutes until the battery gauge showed some life. Make sure to use decently thick wires. Thank buddy, i owe you a beer! got vemno?

[@hammerandhome]

Haha no worries, happy to help! But please consider subscribing if you haven’t already 😀

[@Will_Powered]

@@hammerandhome you got it brother, thanks again for a great video

[@michaelthompson7570]

Good hack! Especially when dealing with an out of warranty battery. Date for warranty is on the battery. If you bought tool new after date on battery you will need proof of purchase receipt.

[@hammerandhome]

thanks Michael

[@RolfeKolbe]

Super, thanks heaps! I had no luck with an 6Ah 18V (20V US) battery starting up a 9Ah 54V (60V US) battery but when I used a battery with the same voltage it worked! Whoohooo! I was nervous using my expensive battery to do it but it was a winner! Thanks again. I actually got ripped off on Facebook Marketplace after being sold a battery cheap and then getting home and it not charging and the bloke blocking me so I could not follow up! I felt pretty dumb but turns out I got 54V 9Ah battery for $90 Australian dollars. Whoohooo! Did I say thank you!!!!

[@hammerandhome]

That’s awesome bud, happy it worked out for ya! Thanks for watching. Happy holidays 🎄

[@TheYooToob2000]

I have two practically brand new DCB200s I’ll be trying this on. Also, Dewalt’s customer service is great and they will replace them.

[@davidrice4800]

You can also use a 6 Volt or 12 volt power supply for a couple of seconds, and it will charge. If you don't have an extra battery to jumpstart the dead one with

[@MrPenguin1990]

Worked perfect. Awesome

[@danarnold8765]

Thanks it work great was going to throw out my dewalt battery

[@ratwatkins]

What guage wire?

[@markniteguy]

Thanks Brad. I was just about to buy a new battery but i followed your tip & it worked right away. Awesome ❤😊

[@hammerandhome]

Happy it worked for ya. 👍

[@markniteguy]

@hammerandhome actually it started charging but when it finished and I tried to use it, it's dead n no action

[@stevesamson9775]

It worked!! Just saved me $100+, thanks!

[@hammerandhome]

You’re welcome 👍👍

[@butchlewis7338]

These gimmicks never work... Or so I thought. I have a DeWalt 2 amp 20 volt battery model DCB203. The charger is a DCB107. It's been a year since I've charged this battery. However it's brand new and goes to my wife's heated jacket. When I plug the battery up no lights. Found this video and I'm completely shocked. I used to razor blades like everyone else but I did not have a charger so I use jumper cables. Instead of tapping I clamp them both for about 3 seconds. I put the battery on the charger and I have the pack charging light flashing. Thank you so much for this video!!!!

[@hammerandhome]

Happy it worked for ya. 👍

[@deborhumphrey]

COULD THIS POSSIBLY RUIN MY GOOD BATTERY

[@TMm-ez2lf]

Holy.. I was about to throw it away even after watching the video thinking this was non sense and I'd just get electrocuted. Couldn't of been easier, thank you

[@blackbird35116]

Thanks..works like a charm! Going to save me a lot of money!

[@dhud4583]

thanks so much for this great tip, have two dead batteries, one is a 20 and the other is a 40 both the same brand. question for you - do I have to use the same brand and voltage as the ones I am charging? I didnt see this in the comments anywhere and I did look but maybe not hard enough. thanks

[@RT-wq8bd]

Trying that this morning!

[@RobertSunderland-g5l]

I was pleasantly surprised that this works

[@alydevine]

Worked like a charm! Thanks, Brad!

[@hammerandhome]

You're welcome!

[@nickmoore6727]

FYI Some batteries have current and thermal fuses in circuit as well. May be why some don't recharge. Can be a cause of battery problem if they've failed.

[@gsremn]

Thank you, just brought two batteries back to life.

[@Bundzkomornik]

This video saved me from throwing away 1 battery today, thanks so much!

[@hammerandhome]

awesome!

[@harryfriedlander2432]

I would be very appreciative of your help. I live in Costa Rica where getting a replacement tools isn’t easy. I have a black Dewalt 7.2V-14.4V NiCad Charger(DW9118) and a black 9.6V Battery Pack Type 1 (DW9061). The charger shows a red rapidly blinking light when the battery is inserted. However the battery appears dead and doesn’t charge. Where is the problem and what should I do to save the battery? Can this be fixed without buying a new one?

[@robertpickren4000]

Thanks for this video. It worked on one of my "bad" 20V batteries but I have another one that still will not charge. Do you know what the voltage needs to be for the Dewalt charger to "recognize" the battery and start charging? On my bad one, it read about 12v vs 20.2v on a good one. The jumper trick does not raise the voltage very much at all on the bad one even after trying it several times. Also, I see no spark when I connect the jumper wires. I'm thinking this may be a truly lost cause. I would appreciate any voltage reference points before and after the jumper trick. Thanks

[@GlenEleby]

Worked like a charm! Thanks!

[@hammerandhome]

Awesome!

[@larryrose476]

I have Porter Cable batteries would they work for my Hercules that's totally dead like the Dewalt you showed

[@adamratcliff8892]

Worked first try! Thanks buddy

[@hammerandhome]

Awesome!

[@vr20207]

Worked...just revive black and decker 18v battery.thx

[@larryturnertclan]

Some none brand accessories will totally discharge a battery. I have a worklight that has a USB charge port. Apparently the charge port isn't shut off with the power switch.

[@alejandroborque3126]

Thanks for the video, it works perfect on a battery that I have in storage for more that 4years sitting on my garage

[@hammerandhome]

Awesome!

[@maxtiger5396]

I have a warrior 18 volt lithium charger that will not charge unfortunately I didn't get anything from your video but good information

[@Perbalter]

This shit realy works!! Just did it!. Don't use to small wires though. Mine almost melted. But all you need is a few seconds.❤

[@wfillier]

this worked for me... i was using 2 dw 20vmax batteries. the failed one had only been charged 1 time. i tried this jumpstart trick and now it seems to be working just fine. it took no time at all.

[@twoweeledsoto6072]

I'm one of the lucky people who own a Craftsman V60 battery. This battery doesn't show any negative and positive. But I do have another V60 battery that still works (miraculously). Shouldn't i be able to just assume they are on the same side and at accordingly? It also has numerous slots, so I would use the outside slots like your Dewalt battery.

[@dnn0331]

I used good 60v batt to jump bad 60v just as shown and battery still not charging. Would this be a bad cell?

[@racerxr2]

Amazing thank you this worked perfectly!

[@andersmalmberg3106]

Omfg! Brilliant! You literally saved the day! Thanks a lot!!!

[@tylersineath]

This helped so much thank you

[@hammerandhome]

you are welcome!

[@victorriga9814]

Thanks for the great video. I have three dead DeWalt 20v Max batteries. Did the above using a good 20 volt DW Max battery measuring 26 volts on voltmeter and got three different results: one battery charged up fine, second battery showed 17 volts after jumping but will not charge up in the charger (just shows a solid red light as if fully charged), third battery can't get beyond 2.8 volts on the jump and shows no light whatsoever on the charger. So does this mean that the second and third batteries are beyond restoring?

[@hammerandhome]

I think they are done. The cells do die eventually, and no matter how much jumping you do they just don’t come back.

[@jeffbradford594]

Great hack worked like a dream

[@stephenireland6105]

Hi Brad can this work on a Ryobi 18v 6ah lithium battery.

[@AlexanderHebert-kc2vy]

I was lighting chrismas lights with one and it killed it. Did this for less then a sec and it charged again thanks