Dewalt Battery Won't Charge / Charger Has No Lights Simple Fix

Dewalt 20v 60v Flex Volt Black Decker Ryobi

[@tomcatmcgillicutty6913]

I will NEVER but another Dewalt tool,,,Got a 500 tool sitting and they can't build a damn battery and charger that's works right,,,,WTFUCKKKKK...Extremely aggrivated

[@richarddavid6957]

Somewhat helpful but where did you tooked the power from your just showed to cables was it a car battery? Thanks for trying to help.

[@ricardorodriguez2607]

Yea I was wondering the same thing? Did he hook it up to the car battery?

[@DrengrMike]

I did it with 3 steak knives, no power source, just stick 2 in the slots according to the video and connect them with the third, it smokes a tiny bit and my knives did a little microscopic weld, then put it back on the charger and it worked like a charm, no longer than 2 seconds connected or else it might mess something up.

[@zay8452]

It works with another battery u can use speaker wire use a full 20v battery and put a wire in negative and positive then do same for the one that won’t work but only tap the negative wire to the not working one for like 3 seconds then put it on charger

[@fixinstuff4374]

Hi. Sorry for the confusion. I hooked it up to a 12 volt battery charger like a duralast.

[@rickfreeman9530]

@@DrengrMike I

[@josholander3943]

Just curious, what amp setting did you set the car battery charger to?

[@TheKezzla]

THIS WORKED FOR ME!! I didn't have a battery jump starter and read in the comments here someone tried a regular 9v battery...like the kind that goes in a smoke detector... So I also tried a 9v battery with the razer blades and my dcb203 battery is now charging! I threw away at least 4 relatively new batteries recently with the same issue.. I bet all of them could have been jump started like this. THANK YOU !!!

[@NabilSawaya-rl3kw]

just did it with a 9v battery: worked great. Thanks

[@kylereichstein7578]

Dude I am going to give this a go tomorrow. I’ve got about 12 - 60V batteries and 2 are dead. I’m sick of spending $200+ for these batteries just for them to bug up within a year. Dewalt needs to make some changes! Thanks for the tip man! 🔥

[@MWS67]

WOW!!! I can't believe that worked. I got 2 dewalt 20v (2ah) batteries from a store that was throwing them away. The customer brought them back because they were dead. I put them on my charger and got nothing. Then I found this video. I used some wire to connect them to one of my battries for about 3 seconds each and now they are charging just fine.I learn something new every day. Thank you 😁😁

[@GRIDMASTER6]

Wow, you've just saved me load of cash my friend. I jumped the battery using four blades, two in each of my batteries and it worked straight away. Thanks for the tip .

[@peterquaker9369]

just tried this with a 12v car battery charger and it works, my dewalt battery now charges. Thanks for the upload.

[@EireFirst2024]

Can I just put the other end of the blades into the donor battery?

[@chrisdarazsi6325]

You're right, it's amazing that this needs to be done. Both my 20v batteries stopped charging, no light on the charger. I contacted Dewalt and, to their credit, they were easy to deal with and sent me a new charger. When that didn't work, it was clear to me that it was the battery that was the problem, not the charger. I had even gone to Lowe's and bought another charger, that I was able to return when it didn't help. Thanks for the vid. The batteries are charging right now!

[@sa..0.0.7]

Thank you for this video! You saved me a lot of headaches and troubleshooting. I bought a brand new battery and charger kit, used the battery a few times, and then when it came time to recharge the battery for the first time, I was getting no lights on my charger. I was a bit skeptical trying this out. I tried with a 9V battery as some folks said, but that didn't work for me - possibly the battery was just a bit low. I also tried with my portable booster, but that didn't work either for some reason. My final attempt was using booster cables with my car battery. I saw a couple of sparks as you mentioned in the video, brought the battery back in and put it into the charger, and it started charging! (Charger is currently flashing red, which indicates that it is charging). Great trick, thank you!

[@Callawayo]

Fixed two 5h dewalt batteries with no light, thank you so much

[@pauls826]

Every dewalt I’ve ever bought flexvolt Come with the super fast charger especially the FLEXVOLT s

[@thebluedan]

My charger thinks my battery is full. Solid read light...dead battery. This jump trick almost works but then in charger I get on blinking light...the solid right after.

[@KingJPerez]

Mines doing the same any luck on a solution?

[@johnathantaylor1513]

It does work with other DeWalt batteries. I literally just jumped a DBC203 using another DBC203 and spare wire I had laying around

[@gnicevids]

It worked great for me I use the battery charger/Maintenance with prong or the circle things and place them in the same locations as you and voila it work once I place it on the dewalt charger.

[@davidf1877]

Great video showing what to do if you can’t jump start from another battery. My FLEXVOLT has a partial charge and works on tools, but when put in charger, light briefly comes on and then goes off. I’ve tried cleaning the terminals, but makes no difference. Even though the battery still has a charge, would a jump start result in a ‘reset’ which might allow it to charge?

[@VitorAlvimBarroso]

Are these cables connected in another power supply?

[@JayTroful]

Did this with a trickle charger, battery is on the charger and charging now. Thank you!

[@kellyklein2067]

It didn't work for me tried 12v 2a 12v12a 12v 50a no spark nothing tried on 3 batteries no luck

[@inco-gneito7543]

I just ran into this problem today. I just left the battery on the charger, the yellow one, and it just randomly started charging after about 7 mins sitting there.

[@JamesFrancis01]

Worked for me. Used a 12v car battery charger and sparked it a few times. Fyi ...initially I tried it at 2 volts but it didn't work. Wonder what the science behind this is?

[@stickfigure9662]

Tried a 12volt battery tender charger and 2 razor blades but got no spark. Put the blades in between another porter cable 20v and the Dewalt 20v and got spark. Back in business and working now.

[@donaldbarton3816]

Yup this work for me and I’m telling everyone of my friends about this !!

[@markdewolfe9364]

My DeWalt 20 V battery- the only 1 have- showed no lights in the charger. Followed this tip with a 6 volt lantern battery with no results. Got out my 12 V car charger and after a spark and 3 secs, all working perfectly. I too used the razor blades, they fit perfectly are eary to connect and readily available in your box knife. :)

[@miketexas4549]

I bought the 9.0ah exactly a year ago along with the DeWalt factory charger, now the battery barely holds a charge. Anybody else experienced this problem?

[@DarrenMcGovIRL]

Top drawer my man. Thank you so much from 🇮🇪

[@Ireland831]

I tried a few other ways to fix my battery but none work. I used my battery trickle charger and the blades from my razor knife as you demonstrate here. Battery took a full charge and back in business. Thanks so much for your vid!!

[@Isaiiahii]

What did you have the jumper cables hooked to? Maybe I missed when you said it. I'm in the same boat as you, I only have one DeWalt battery, but mine is the 60v 6amp Flexvolt. I have Bosch, Makita, and Ridgid batteries, but do not know if hooking to any of those would work; I'm assuming it would. I don't have a portable car battery charger. I have jumper cables though. Could I hook them to my car engine and jump the battery?

[@fixinstuff4374]

No. Don't do that. I didn't have jumper cables, it was a battery charger I was using. If you have other batteries (like makita) you can jump one battery to the other with speaker wire.

[@Isaiiahii]

@@fixinstuff4374 Okay, thanks for the reply. I'll try it out. I have 5 Makita batteries, so I'll try it out with one of those.

[@fixinstuff4374]

@@Isaiiahii just make sure to connect positive to positive negative to negative and just give it a tap. If you see a spark, you know you're getting good connection.

[@Isaiiahii]

@@fixinstuff4374 Unfortunately this didn't work for me. It actually broke my Makita battery. I knew that was a risk going into it. This makes me never want to buy DeWalt again. I have a flexvolt skillsaw and flexvolt grinder that are useless unless DeWalt will replace the battery for me. I haven't heard back from them yet. I don't want to buy a new battery because it seems DeWalt has tons of issues with their batteries. I have 8 year old Bosch batteries that still work.

[@fixinstuff4374]

This shouldn't have broke your Makita unless you accidentally mixed up your pos/neg. But yes you shouldn't have to do this, and many Dewalt fans have swapped to Milwaukee.

[@tonymanchester9898]

It's crazy how much this works I have a 20v 6ah only used it about twice and it stopped working did this but I tapped it 3 times didint work tried charging it tried it again but this time I just held it on there till no more spark now it charging

[@daronbreinholt9798]

Ok what the hell are you jumping it from? You only show one end of the jumper cables.

[@dosdont]

That's great but you didn't make clear what the leads are connected to. Are they connected to a battery charger? Edit: Saw a comment about using a 9v to do the same thing so I tried it, holy crap, it work, just canceled my charger order. Thank you Thank you Thank you Disgusting of Dewalt to have not handled this, I've thrown out tons of batteries and even bought another charger in the past. This is the kind of crap that causes me to not feel sympathy for corporations when I hear of people stealing from them.

[@fixinstuff4374]

@@dosdont yes

[@charliemontiel6797]

Used my car to jump start my battery, worked perfectly thank you!

[@MADDFAC3]

I can’t tell you how much this helped me. I just purchased a DeWalt cordless screwdriver for $100 bucks. It came with two batteries, a charger and tool bag so obviously a deal only problem is, the batteries wouldn’t charge. I brought it home and attempted to charge them for three hours and nothing. I found this video and tried it with a battery from a drill I have that does work and presto... the batteries are both now charging. You are a genius. Thank you. I’ll let you know if I get a full charge and a general update.

[@MADDFAC3]

Quick update. I got both batteries fully charged and everything is working fine. Thanks again.

[@jessevincent6647]

I tried it on two of my flex volt batteries with no luck. One shows nothing on the charger and the other shows solid like full charge

[@fixinstuff4374]

@@jessevincent6647 on the battery that shows full charge take a volt reading and see what you get. On the one that shows nothing, how old is the battery?

[@TECsta76]

Is there anything official on this? Looks dodgy…

[@randydeskins9359]

18 volt and 20 batteries are the same inside. It is a marketing gimmick.

[@CbrF4i600cc]

Anything that will fill in the slots will work... tell that to my plastic shims

[@joseibarra5787]

Can i use my car batter and tap it like this or will it be to kuch power?

[@paullloyd-jones3282]

It worked! Thank you so much!

[@patrickjohnson7801]

What if the charger light is on and no light on the battery

[@spinnanz]

fyi, your 18v packs are actually 20v too. 18v is just their nominal charge.

[@walterzoomie]

I love you, man. Hooked my dead battery to my truck using jumper cables. Worked a treat! Thanks!

[@kevinchamberlain7928]

Just tried this and my flexvolt is now charging!!!! We'll se tomorrow if it works but it is definitely charging and refused to before.

[@lichromah6968]

You’re life saver. It will work any jump start from 6v-12v. Thanks for your video 🙏

[@anthonymilette9814]

I tried this with a battery on 2 bars out of 3. Didn't work. Think my charger is junk

[@fixinstuff4374]

@@anthonymilette9814 usually if you have a battery with 2 bars and it won't charge to 3 bars, that's the battery not the charger. That usually means one of the cells are out on the battery and so it can only charge the remaining cells.

[@rfgf-tv]

Hey I just tried it with a walmart battery charger and it worked. Friggin sweet man. a 20v 5ah and a 60v 6ah.

[@jeremylakenes6859]

I’ve tried to jump start mine 5 times... but I can’t get mine to come online.

[@rodt7803]

I've been trying to find out how can I charge my Porter Cable battery without the charger and I don't have another drill battery to charge it with and no one has given me an answer

[@rsharpe1985]

Spend $24 on Amazon and buy a charger that would be my logical choice

[@DidiMiller73]

I saw someone using pennies

[@lifer9883]

You're a lifesaver, my DeWalt charger would not light up, no led light on battery either, gave it a jumpstart with my portable AA charger, sorted 😊👍 battery now charging.

[@brucevonk9033]

Jumped my 60volt with a 20 volt and it is now charging..thank you!

[@ricardorodriguez2607]

Hey bud! What cable did you use? Was it regular speaker wires? I’m trying to jump my flex volt with a 20V battery but I can’t get it to charge lol

[@brucevonk9033]

I use 2 razor blades

[@ricardorodriguez2607]

Got it but what did you connect to the razors? Thanks!

[@Jose-ce4vq]

I tryied the same and didn’t work

[@veronicamiller3380]

I have a green works 60 volt lithium battery. Will this work for this battery and if so what do I set my car charger amps to?

[@kp-qr6hy]

C😂

[@RandyHulin]

What was the other end of the cables hooked to?

[@keithwolford2272]

What if that doesn’t work

[@joe198032]

Lol its a brandnew batrery

[@e77toe77]

Tried it exactly like the video, but this sucker is dead dead. Voltmeter says 0.0 Nd doesnt even flicker. I guess i tried 😢

[@fixinstuff4374]

If you tried this and you got spark, your voltmeter should have read something. Your battery sounds like it is dead and unrecoverable.

[@e77toe77]

there was one spark initially, but none after that.@@fixinstuff4374

[@bobby_au]

saved me 100's ty saved 4 battery's

[@sgiron3]

Thank you works for me

[@sportsfamilynorton8132]

Thank you for the advice - it worked great!

[@button-jeff]

Holy cow. It worked.

[@jimjim5257]

Did not work on my battery

[@goldman7267]

Wow it worked. I almost threw one away and was going to buy new ones. I used a 12v battery jump starter for about 5 seconds

[@the_visionvry6244]

I have 2 of the 60v 12AH batteries that won’t charge fully

[@fixinstuff4374]

This doesn't fix that unfortunately. Your batteries may have some bad cells, preventing it from fully charging.

[@MartinLast-r4l]

It worked😊🇬🇧

[@mrchopitup6832]

I use some washers

[@kevintregear2675]

This worked for me too! I used a jump pack, 12.8v. It sparked on the first touch, not so much on touch 2 & 3, but now it's charging! Thanks!

[@justinzabel88]

This worked for me…THANK YOU! 8 month old battery barely used. I suspect it does not like being completely drained, mine was powering the Dewalt inflator airing up an extremely low set of tires. Died while trying to air up the last one. I used my Schumacher battery charger set to 40a, just gave it a quick tap to get a tiny spark. Charging fine now.

[@rodriguezmontoya1127]

Wuaooo 👍👍👍

[@Andrew-Comi]

Didn't work for me... no spark no jump start. Guess I'm buying a new battery and charger since I don't know which doesn't work. Battery is a couple years old though, which Is a big difference

[@jasontheconner6120]

Wow, just wow! The 2 battery videos were all I could find too. Thank you!!!!

[@YanooshGakagoosh]

Thanks a lot for sharing this information. Had a Dewalt battery fail on second charge. Jumped it with a 12v motorcycle battery as you showed. Sparked and is now charing on charger. Excellent! Thanks again!!

[@MosaicHomestead]

The charger didn't work but the second battery trick did, Thanks a lot.

[@wayneramsey6703]

Thank You

[@robbenoit6065]

What are the jumper cables hooked up to?????

[@fixinstuff4374]

@@robbenoit6065 a Sears 12volt battery charger. But some people use jumper cables from their car (i wouldn't recommend but will work).

[@robbieanderson4674]

Watched this and circumstances identical new battery, charger, and just wasn’t used yet. Just went thru very cold weather here in Texas and battery was in truck. Did not really think it would work didn’t seem logical to have to jump start it. Used dimes and IT WORKED - started charging and took a full charge. Totally impressed! Thank You!

[@fixinstuff4374]

No problem. Glad it worked for you. I have friends in Texas and their power was out due to the snow storm.

[@Jesse-gv9tf]

I have the opposite problem. My 9AH flexvolt battery won't power my 20v tools. It only works on flexvolt tools. weird!!

[@normanchavez6736]

So, you need turn on your jumper? I have some troubles with my English

[@joncarbone]

Look up 'jumper cables.' They're using cables for car batteries to 'jump' the small battery.

[@Madkalibyr]

I have the same weed eater, the battery stopped charging (the charger works, just not the battery for this!) Ty for this video I can finally get to work on my crazily over grown yard

[@joshuageorge7758]

The old 18v batteries and new 20v are actually exactly the same on the inside. Just fyi.

[@doomman700]

Dewalt batteries are junk. I am seriously thinking about switching brands because they are that bad.

[@goldman7267]

Bad design on Dewalt’s part

[@garrettoliver4399]

What are your leads connected to and what voltage did you tap the battery with? I’m having the same problem you describe but I don’t wanna assume it’s a battery charger and if it is what setting is your box on. Thank you

[@IANFRANCISRubert-yi3ix]

Thanks for this as I was getting frustrated-great tip that worked well, just wondering why DeWalt don’t suggest a way to do this? Or even sell a gadget to send the 3 quick charging voltage into it.

[@barbarakavar4085]

THanks so much! Your right, no one else is doing it with one battery. Very Appreciative!!

[@skeetlybeet2584]

Old video but I just used this to fix my 60v battery. I appreciate you dude!!! Thanks alot

[@WolfTank-h7o]

Hello, thank you very much, because I regretted my $280 purchase because the battery does not charge. I followed your video and it worked. Great, thank you again

[@Simcore999]

My guess is, if you have to jumpstart the batteries, they won t last long before they will fail again

[@garrettoliver4399]

Never mind I read some of the other comments and took a stab at it hoping I didn’t fry my 250$ batteries. But it’s worked great. Finally some good info on KZbin that WORKS!!!! Nice thanks again.

[@michaelchan1998]

Ok so ive done this and the battery still won't charge. I even used another fully charged battery to battery with wires and it charged it with 2 green lights. Put it back on charger but still wont charge, any suggestions would be appreciated, cheers

[@gerrytaylor1505]

I can 100% confirm that this works. I've just tried this on a DCB185 battery that would not charge and its now charging! I used two Stanley knife blades and a battery charger set to boost.

[@paularussell3479]

You didnt indicate what your leads were attached to...

[@fixinstuff4374]

A 12v battery charger

[@hybridaquatics7593]

I literally just had this exact scenario happen to me with a 20-volt battery. It's like if you were speaking to me directly. I only had one battery. It worked perfectly. Thank you for making this video!

[@virginiaboyle6606]

Well SOB…it worked! Thank you. Btw: didn’t have jumper cables. Used 2 metal clips and let them touch once which created the spark.

[@beegrichard165]

THIS WORKED.......THANK YOU

[@peterbaldwin757]

This is a rare case if the battery was that low to be able to jump it. I would not recommend jumping the battery with a lead acid charger. You should use another battery of the same voltage or brand that is lithium ion underneath the 20 volts which that battery sits at 20 volts until it's activated in the tool at 60 volts. Also I would never ever charge that 64 battery of any type on the black 20 volt charger unless you don't want it to work on 60 volt tools. This was a huge flaw that you all did and their design so if you have 60 vtools and batteries only charge on their yellow charger otherwise eventually it will reprogram it and you will not be able to charge it on your 60 volt charger nor will it work on your 60v tools. Also I highly recommend using a voltmeter as you were tapping that battery because I'm not sure how you did that so easily because 12 volts or even 15 volts is not high enough to kick on the charger it typically needs to be 16.5 or higher.

[@mcg1909]

Strange but works who would have thought shorting it would make it charge but whatever easy fix

[@blackout7629]

What’s your power supply I jump box if so what’s the setting car battery

[@StephenMatney-dr7du]

What is the other end of jumper cables

[@fixinstuff4374]

A 12 volt battery charger that you use to charge up car/mower batteries.