Dewalt 20v Battery won't charge - FIX

[@slimvice9002]

You're a lifesaver because I just brought a weed eater hedger that came with a b16-2025 battery that didn't take a charge. So I followed your instructions and the battery is now charging. Now I got 2 working batteries. Thank you very much!!!

[@melissafleming4972]

After 2 years of my husband trying to get his 2nd battery to light up on the charger...u saved the day by ur video! Thanks!

[@keithfarnsworth6452]

Melissa - glad we could help, 2 years is too long to go with out a backup battery

[@ezequielfuentes1823]

Tell him to buy a new one and stop being cheap

[@DFWJon]

@@ezequielfuentes1823 You're a fucking moron. Two batteries at my local Lowes are $149.99 for the pair, as you cannot buy just one, and you telling him to quit being cheap and throw away his brand new battery that should've worked ”out of the box” is outlandish, at best!!! GTFOH!!!

[@jayfroman3257]

So glad for your husband! No guy is happy when his battery won't light up the charger. (Including me!)

[@andrela7349]

Awesome!! After watching a few worthless videos, I was about to throw the battery away. But then I watched this one! Worked like a charm and it’s back to normal! Thank you!!!

[@charlesstone8262]

It Worked!!!!! Thank you sooo much for the tip. This battery had been used for a year with no problem, then just like that, it lost it's memory. Back in business.

[@BigGuyReviews]

Worked like a charm on dcb207 also. Ty so much for making this video. 2 minutes saved me 90 bux. Really grateful to u.

[@katojim1]

Sir, THANK YOU SO MUCH! I went to use my Dewalt 20V sander with a 2 year old Dewalt battery that was attached and it was dead. I tried to charge and it wouldn't, I found your video and did exactly what you said and, PRESTO! New battery that charges!! Thank you, those batteries are $75 here in Palm Springs, CA

[@John-ih7gp]

Crazy! Wow! I gave up on Dewalt and switched to Milwaukee because I had 6 or 7 dead batteries. Turns out all but one actually still work because of this!

[@MrBalloonfoot]

I tried you jumper cable fix on an almost new battery that came with my DeWalt lug gun that would not take a charge. Your solution worked like a champ! Many thanks!!!

[@andrewjuengel676]

Cleaned out garage, and was just about ready to throw out battery pack. Did quick internet search found your video and tried it out. Battery pack now works fine. Thanks. The battery is a dewalt 20v dcb201.

[@beyondthebirdhouse4796]

Andrew Juengel - awesome, glad I could help!

[@greggerstner5599]

Excellent fix. Saved a 20v, 4.0Ah triton battery that now costs $100. Pay close attention to the "just a second." I did it longer and nearly overheated the battery. Looked at other fixes; don't have a 20v controlled power supply. Using the other battery (carefully) is just one of those head-slapping, why-didn't-I-think-of-that ideas. Careful with the polarity, just a second, and don't let your batteries get completely drained. Thanks, BTB!

[@beyondthebirdhouse4796]

Glad I could help

[@daver6640]

It worked! All four Dewalt batteries were dead but I had a charged Ryobi battery and that did the trick. Same concept as positive to positive and negative to negative.

[@claybone799]

I just got two of the 20v batteries about 6 months ago and went to charge one and this exact thing happened. If I didn't find your video I would've ended up going through some warranty bs. This worked like a charm! Thank you!!!

[@username1000006]

Worked for me! Just got a Dewalt DCF888D2 20V MAX XR --- w/ (2) 2ah batteries. one battery came with a bit of a charge, the other nothing, no lights, no action in charger. Called Dewalt, they sent a new one no problem. Thought I remembered seeing something like this before...found it.. tried it.. it work.. now I have a 3rd battery!

[@davidflosi6540]

THANK YOU!! I just purchased a DeWalt impact driver that had an extra battery. One would charge, one would not... I contacted the seller on Amazon and they said to contact warranty service. After trying your "Fix", the battery now charges. You saved me a trip and a couple of hours out of my already busy day.

[@beyondthebirdhouse4796]

David - glad I could help !!

[@WcSuka]

I know this video is old as hell but it works and saved me the cost of a new battery cheers

[@pathikpatel3373]

You sir, are the man! Fixed my issue. Had not used my battery since 2013 (currently 2021) and your trick brought the battery right back to life & is charging as I type this! Thank you!

[@SludgeFuZZ]

Worked like a charm.. Took me a minute to scramble around for some wire (had to beat the exposed ends with a hammer because it was too thick to reach the terminals on the batteries) and voilá.. jumped the dead battery and it's charging now.. Thanks..

[@SludgeFuZZ]

And it wasn't even my battery.. Haha.. Damn.. Well... Where has my extra 'dead' battery gone off to then..

[@robyaggie5797]

Wow, fantastic! My 5AH battery is only 6 months old so I was searching for the warranty process when I found this. You have probably saved me a ton of time and aggravation. My battery is now charging and suspect will work fine later today. Thank you.

[@dwightlembke3930]

It seems like a scam but the battery is charging now.

[@davidscott9097]

@@dwightlembke3930 yeah on Dewalt's part definitely a scam I got a flexfuel battery used like 5 times that stopped working.

[@reelmccoyfx]

Bought a two pack of 20V Dewalts. Placed them on the charger and one was charging. The other indicated one bar of charge but the chargers I put it in (3 different chargers) all indicated it was fully charged. Found this video and gave it a shot. Woot! The battery is now charging. Thank you!

[@PATRICKCASTILLO]

Thank you so much! The battery was totally dead and nothing happened when I tried to charge. I did exactly what you showed in the video and the charger has the battery in it and finally it’s flashing!

[@beyondthebirdhouse4796]

Patrick Castillo - glad I could help

[@timothycook9844]

Just had my rarely used 12v dewalt battery do this. Decided to hook it up to a 20v porter cable battery as 20v was my only option and it worked. My 12v dewalt battery is taking a charge. Thanks.

[@keithfarnsworth6452]

Timothy Cook - glad i could help !!

[@andrewclark5772]

Just tried it on my dead battery and its now charging! Amazing fix. Thanks a million for your expertise.

[@keithfarnsworth6452]

Andrew - glad we could help!

[@RetiredHRGuy]

I'm a retried US expat living in Cebu, Philippines. Just bought a DeWalt 36V drill with 2 batteries. One works fine, the other was dead right out of the box. Applied your fix and it worked like a charm! Saved me endless hassles of trying to return and get replacement by mail. Salamat sir for your video!

[@beyondthebirdhouse4796]

Glad I could help - watch that battery for an internal short, if it runs down quickly, return / exchange while still under warranty - also don’t leave batteries clipped into tools,, as some tools will cause a drain and bleed the battery down below the threshold allowing charging - good luck and enjoy Cebu!!

[@cpmaverick]

Thanks for posting this! When I realised just a tiny power boost might trigger the battery enough, I tried this- I put it on my 3/8 impact driver and spun it by hand for about 10 seconds. In theory this would put charge into the battery. It worked! Put it on the charger and the light came right on.

[@grocknroll165]

Success!!! After hooking up the wires I pressed the battery indicator button on the “Bad” battery and got One bar. So I knew I had a positive connection. Also... i used an old 1.5 amp LI to fix a 6 amp XR And I can also confirm that the battery went “bad” after being left in a tool for 10 days. Now we have all left batteries in tools for months and never had a problem, haven’t we? In this case it was a Dewalt Leaf Blower that caused the issue. So I will know not to leave batteries in that tool Thanks for your video!!!

[@beyondthebirdhouse4796]

Paul B - glad I could help!!

[@draftking3435]

Worked like a charm! I had the same problem with two 20v 5AH batteries that would not even charge on the charging dock... Charging dock would not even blink red or nothing! Was about to contact Dewalt, but found this fix and now it’s charging again! Thanks!

[@keithfarnsworth6452]

GT-BMX-RIDER - awesome, glad I could be of assistance !

[@spudweg]

Thanks. I don’t have a second DeWalt battery so I hooked up two 9v alkaline batteries in series and jumped it with that and it worked.

[@panthrosan]

You saved the day my friend. I picked up a Dewalt DCD795 open box from Lowe's with 2 dead 203BT batteries....hence the cheap price. Hooked them both up to my good battery from my other Dewalt driver and now I have 2 functioning batteries.

[@beyondthebirdhouse4796]

panthrosan - great score on the open box, and glad it helped 1) to get them working 2) to save some cash

[@russ320]

Worked for me as well. I had a virtually brand new 2018 DCB203 battery that went dead because my LED light stayed on for some reason (don't know why) and when I stored it drained the battery down. Battery would not come back to life. After this video I must say it is now charging. Thanks!

[@keithfarnsworth6452]

C R - awesome, glad I could help!! The failure to charge is the result of an overly discharged battery pack - this results from: 1) The charge drops too low for the dewalt charger to recognize the battery pack, which my video helps show you how to solve I’ve found through trial and error: A) keep my batteries charged before storage, and B) separate the battery from the tool when storing or transporting - ever since I’ve done that I haven’t had a battery fully discharge and refusing to charge 2) the second reason a battery drains below charger recognition is due to a failed cell(s) within the battery pack that then drains the other cells - unfortunately my video won’t correct this issue (it might temporally, but the battery pack will discharge rapidly again) ~ if this occurs, obviously use your warranty if available - if you don’t have a warranty option then, athough it’s not my video, here’s a video I recommend that shows you how to rebuild the battery pack (thereby replacing a damaged/failed cell/cells) : kzbin.info/www/bejne/aavLgKOdj7Wir5o

[@JustBeYouooh]

You're the only one that made it simple! I was looking everywhere for a charger you plug into the wall. All u need are wires!

[@shawnmurphy7979]

Why wouldn't dewalt let customers know about this? Oh ya cause there batteries are $150 a piece! You just saved me some $$$ bro. Thank you! Didn't work the first or second try, but did work the 3rd attempt. If it doesn't work make sure you keep discharging it then try again.

[@stephenroach4021]

Awesome vid. I had 3 dead batteries and I thought it was because of my cordless skill saw. I was getting ready to call DeWalt and give them an earful. Tried it on the first dead battery and now charging perfectly. Thank you.

[@beyondthebirdhouse4796]

Stephen - glad it helped - I now store and transport my batteries disconnected from my tools

[@jsperryphoto]

Son of a...! I only have one battery right now. I had just bought it in January but hadn’t really had a chance to use it. The store wouldn’t do anything and I called DeWalt, they quickly with very few questions asked sent me a new charging station. So, now I’ve got two chargers and one battery that won’t charge on either one. I was looking to pick up a couple more 20V batts, I might just do that to be able to recover my original one. Thank you for the video, it was short, to the point, and I liked the continuous shots to show that you weren’t pulling a fast one on us.

[@beyondthebirdhouse4796]

Justin Sperry - first call dewalt back, they’ll replace the batter under warranty - then use that new one to jump then charge this one - for future reference, don’t store or transport tools w/ batteries attached

[@BlueJaysvsThem]

Thank you so much for this. I had the same issue with a brand new tool , came with 2 batteries. One charged, one did not. This fix absolutely did work.

[@seahawksforever9504]

I bought a second-hand battery on offer up that is brand new and a few months old. It wouldn't light up from the power indicator and it wouldn't even light up on the charger. I use speaker wires as you did and jump-start for 10 seconds and it works! I am very impressed with whoever thought about this.

[@nazahmed4660]

I just tried this and it worked for me!!!! Dude im so happy that this worked. You Sir are my new Hero!!! Thank you for sharing this information

[@beyondthebirdhouse4796]

Naz - glad I could help

[@rarodrigueztorres]

I was having this issue with a brand new tool I bought. One battery worked fine and the other didn't wanted to take any charge. I was about to invest more than $100 in a new battery. I followed your instructions and now I have two working batteries. Thanks my friend.

[@beyondthebirdhouse4796]

Glad I could help - The failure to charge is the result of an overly discharged battery pack - this results from: 1) The charge drops too low for the dewalt charger to recognize the battery pack, which my video helps show you how to solve I’ve found through trial and error: A) keep my batteries charged before storage, and B) separate the battery from the tool when storing or transporting - ever since I’ve done that I haven’t had a battery fully discharge and refusing to charge 2) the second reason a battery drains below charger recognition is due to a failed cell(s) within the battery pack that then drains the other cells - unfortunately my video won’t correct this issue (it might temporally, but the battery pack will discharge rapidly again) ~ if this occurs, obviously use your warranty if available - if you don’t have a warranty option then, athough it’s not my video, here’s a video I recommend that shows you how to rebuild the battery pack (thereby replacing a damaged/failed cell/cells) : kzbin.info/www/bejne/aavLgKOdj7Wir5o

[@ItsTim335]

Some perspective from someone who flies large scale RC helicopters and has been working with high performance, high capacity LiPo batteries for several years. The DeWalt batteries have an over discharge protection circuit built in. If the battery is discharged beyond a certain voltage, the DeWalt system will not allow you to charge the battery. Your fix is circumventing that circuit by directly adding charge to the battery, lifting the charge above the low charge threshold. You really are jump starting the damaged battery, and it really does work. The reason the battery is warm to the touch when charging is because the battery is damaged; Discharging a LiPo battery too much damages the battery. In a car battery (lead acid), after 2-3 discharges, the battery will no longer have the amps (torque) needed to start the car. In damaged LiPo batteries, the batteries get hot and puff (literally get bigger) when charged and discharged. The battery will not have as many amps (torque), the individual battery cells will have a higher internal resistance, and the battery pack will get hot when you use it. For batteries in hard cases, this puffing could lead to a battery puncture and fire. This is why the protection circuit exists in these batteries. I'm not saying "don't do this" (we all want to save money); I'm saying 1) Do not over discharge your batteries, 2) if you do this, be extra careful with the batteries you have done this to, because they will be prone to puffing and eventual rupture and fire, and 3) batteries that are over-discharged will not have the same punch as batteries that have not been abused. Reminder this is the same battery type used in Sony laptops, Samsung phones, and the Boeing 787 Dreamliner; these batteries absolutely will catch fire if abused. Do not over-discharge your batteries. It's the internet; believe what you want. I'm not product bashing, I have no incentive to mislead you, and my message is caution and safety and please don't burn your house down. Good luck! :o) Related searches: - "Tareq Alsaadi Goblin" for big LiPo batteries in high performance RC heli flight - "lipo nail" for what a LiPo fire looks like - "lipo fire house" for the worst case scenario Nerdy stuff: - LiPo batteries are made up of individual LiPo cells - Based on the number of connectors (main + x1, main - x1, balance - x1, balance + x5 = 8 leads), this is a 5 cell LiPo pack (if you opened up the battery, you would find 5 individual cells) - Those extra leads are for balance charging. The charger will (or "should") charge or discharge each LiPo cell independently - When fully charged, each LiPo cell should read 4.20v, and the whole battery pack will read 21v - Storage voltage for optimal battery life is 3.86v per cell, or 19.3v for the whole pack - Really don't want to go beyond 3.74v per cell when discharging, or battery life will be shortened, the battery will lose punch (amps), and the battery will start to puff and get hot when used - LiPo batteries absolutely do not last forever, even in optimal use circumstances

[@beyondthebirdhouse4796]

ImTimay2 - love your comments - and totally agree on almost every point, My complaint lies in the design from the Dewalt system - excessive battery discharge does occur in some of their tools (by design or rather lack of design) and the circuitry designed to prevent the excessive discharging fails to preform effectively, thereby rendering the battery useless - I’m proposing a potential bridge solution, vs just discarding and replacing the battery - I agree with you that that there are potential negative side effects, I also believe we shouldn’t have excessive waste, disposing of batteries that still have plenty of use left in them

[@zack9912000]

ImTimay2 way too many people who are doing this don’t understand what they are doing and are just asking for trouble and have a ticking time bomb. They have these safeties for a reason people like this make upset because they clearly don’t have a understanding what they are doing. Wait till he gets sued because someone burns their home down

[@dustinshaw6985]

zack9912000 if u do this once you will not have an issue. My battery was dead from the start, I been busy working and never took it back. Yea I should have but at time couldn't and before knew it, was to late to even consider taking back. I don't ever totally discharge my batteries, I'm an rc guy myself, 4s summit all day!!

[@code_red7744]

These batteries are not LiPo (lithium polymer) these have 5 lithium ion 18650 cells inside the packs.

[@mblake-87]

shhhh

[@stevenchappell8983]

I didn’t have a spare battery so I “jumped” mine with a 9v. 45 seconds later put it on the charger and it’s working. One of the best videos on KZbin. Thanks for your help!!

[@skylerroth6378]

Great informational video! I almost sent back my new finish nailer until I saw your video. Side note from experience: be sure to use at least 16 gauge wire and don't leave hooked up more than 15-20 seconds. Wires will get extremely hot extremely fast.

[@beyondthebirdhouse4796]

Glad it helped - sorry, I should have mentioned wire gauge, and in the video it was only. connected for a few seconds to charge it enough to be recognized by the Dewalt charger - thanks for the comments !

[@dvang81]

Using 16gauge from insulated wire??

[@beyondthebirdhouse4796]

dee gee - I used 16ga multi-strand speaker wire (scraps from my home theatre), connected for just a few seconds - the time you saw the wires connected between the batteries in the video was in real time.

[@ideaprojector]

Thank you very much. I had experienced this problem with two previous batteries, and was about to call DeWalt AGAIN, when I found your video. It solved my problem, saving me money and aggravation. Very grateful.

[@beyondthebirdhouse4796]

Bob Petrucci - awesome, glad I saved you some time and $$

[@stanleyarczvnski1449]

Gosh! Just fixed 5 genuine batteries! I was very sceptical, but thought I'll try. Genius!! Thanks :)

[@joshuameade2505]

Thank you!! Had a battery laying around too long unused and this hack worked for me got it going again in just a couple minutes thanks so much

[@bernardmiler3106]

Thanks for that video, I am so glad that I didn't throw out my old battery, though it is the Lithium tower type, the process still worked a treat. I was amazed at just how easy it was to bring the "dead" battery back to life.

[@beyondthebirdhouse4796]

Glad I could help! The problem is when the battery is below a min voltage the charger fails to see/recognize it - I now disconnect my batteries from all tools at the end of the day as some tools have a slight drain and can discharge the batteries over time - good luck!

[@iancole85]

Just saved my 20V MAX 5AH, fully discharged while gone for 2 weeks and flat dead. Hooked up to a 1.6AH 20V MAX for 10 seconds and that was enough to get her charging. You rock man thank you!

[@beyondthebirdhouse4796]

Ian - glad I could help, those 5AH’s can get a little expensive . . .

[@iancole85]

Absolutely they can. This is something battery makers should share with customers, if they had scruples haha

[@xichle]

This is a very helpful video! I followed your tips and my battery is now back as normal after an hour of charging. Glad that I did not throw it away. Again Thanks and greatly appreciated!

[@TrungNguyen-pw5wr]

My Dewalt batt issue DBC201(only after used 2 times) is different. The led on charger is steady, not blinking but batt isn't fully charged, or not charging. I used your great tips and it really charged again. Many thanks!

[@beyondthebirdhouse4796]

Trung Nguyen - glad it helped

[@percaesius7945]

Unbelievable! And so simple. A time saver and money saver. Thanks for sharing your knowledge.

[@bigslacker666]

I had a dewalt brush trimmer I used for trailwork. I had used it about 10 times and it died. The battery and the trimmer. Trimmer dewalt refunded me for, but I kept the battery just in case. Just did this 'jump start' shown in the vid and sure enough it started charging. Thanks bud, I owe you a beer if we ever meet in person!

[@toddy5303]

Great tip. Worked perfectly on two new batteries which had totally discharged and I thought were faulty. Thank you

[@JerryPatterson-eo8zj]

Thank you. I had a battery I bought several months ago but had not used or charged, and it would not charge. This fixed it.

[@HighRail62]

Long past since you made this video but the solution to the problem is ,new. Thanks so much for your video instruction. I can't believe something works as advertised from You Tube. You the Man,Bro. Thanks again!

[@lepepe1602]

Just bought a new combo pack today and one battery barely had any power in it and the other was completely dead. They were on sale from 2018 in Home Depot, but anyway I charged the one with barely any power and it’s fine.. then the dead one was doing what you had said. After watching this, I must say thanks because you saved me 30 min one way to the store and some BS returning. Thank you!!

[@beyondthebirdhouse4796]

Rusty Crowe - glad I could help - note: keep your receipt in case it ends up being a failed cell within the battery (you’ll know because it won’t hold a charge over a few days)

[@BigRedUS]

Great tip! Thank! I just "fixed" one of my dead batteries and save myself a bunch of money not having to buy a new battery..

[@perper17]

November 2020: SUCCESS! I had a small DCB201 1.5Ah battery that hadn’t been used in years. Thought it was shot, but also thought “its been in a controlled environment, no corrosion inside, nothing indicating its bad”, it just won’t register with charger to work. Came to KZbin looking for ideas and found this solution that absolutely worked for me. I can’t confirm whether the battery is still as good as it was new, but its a small battery I keep on hand as a spare or to run in my oscillating multi-tool for short spurts. Always good to have another spare on hand, and appreciate the time it took to put this video together. Good stuff! Thank you!

[@draftking3435]

Awesome! My only two 20v 5AH batteries had same issue. So I had to use a 12v Milwaukee and it worked! Thanks!

[@keithfarnsworth6452]

GT-BMX-RIDER - awesome, glad it worked for you - salve some $$ and time

[@elkhunter8664]

I was online looking to buy a replacement and stumbled across this video. Dead battery shows charging as I type this. Fingers crossed, I'll know in about an hour. Much thanks.

[@elkhunter8664]

Follow up: Battery works just fine. Been dead for almost 2 years and now back in business. Saved me some $$$. Thanks again.

[@petergenzer474]

Thanks so much for this clear and concise video! I was able to revive two relatively new Dewalt batteries that had died on me, saving me probably $120.

[@beyondthebirdhouse4796]

Glad I could help! The failure to charge is the result of an overly discharged battery pack - this results from: 1) The charge drops too low for the dewalt charger to recognize the battery pack, which my video helps show you how to solve I’ve found through trial and error: A) keep my batteries charged before storage, and B) separate the battery from the tool when storing or transporting - ever since I’ve done that I haven’t had a battery fully discharge and refusing to charge 2) the second reason a battery drains below charger recognition is due to a failed cell(s) within the battery pack that then drains the other cells - unfortunately my video won’t correct this issue (it might temporally, but the battery pack will discharge rapidly again) ~ if this occurs, obviously use your warranty if available - if you don’t have a warranty option then, athough it’s not my video, here’s a video I recommend that shows you how to rebuild the battery pack (thereby replacing a damaged/failed cell/cells) : kzbin.info/www/bejne/aavLgKOdj7Wir5o

[@dongibbs9761]

Another THANK YOU, this time from Abbotsford BC Canada. I left a 5AH battery in my blower, and a week or so later it was totally discharged and would not take a charge. Your fix worked perfectly and saved me from having to purchase a new battery. So again, thank you very much for a very helpful video.

[@SvoBrianRobles]

Man I just bought a 5ah refurbished and it wouldn’t even turn on the bars and I did this trick and it worked!! Thanks bro

[@beyondthebirdhouse4796]

Brian - glad it worked - happy to help!

[@thomasvandiver1689]

WORKED!! I had a battery that was pretty much new and was having these problems. Now my battery has come alive again. Thank you!

[@KeshPatel]

Wow no joke. I seriously thought they had to be sent back. Both of my batteries started to charge... awesome!!

[@beyondthebirdhouse4796]

Kesh Patel - glad it helped ! Note - 2 of my tools drain the battery if left in the tool during storage, so now I always disconnect the battery when done - also if a cell in the battery pack goes bad it can/will drain the other cells, requiring you to rebuild the battery pack or replace it - thanks for the feedback

[@sanjivsohal6435]

It worked!! Thank you, saved myself a decent chunk of change. Let's see how long it lasts now

[@johnmathews1864]

That you so much! I was pissed my brand new 5AH battery would do anything. I am still very disappointed with DeWalt for not making a fix for this before putting it to market. They knew about this problem for sure, two of my batteries had this same problem. The fix would have been easy to integrate into the changer.

[@frankjackson2439]

It’s not a Dewalt problem. The problem is with your supplier keeping there Dewalt tools stocked for way too long. Batteries self discharge if left on a shelf for too long, to the point that the charger doesn’t recognize when a battery is out on.

[@echochildus2441]

@@frankjackson2439 that would directly be a dewalt problem then if the charger (The dewalt charger) doesn't recognize the battery for a known issue such as this.

[@didscodan]

@@frankjackson2439 I just got done using mine on a dewalt pole saw and now they won't charge. Not sure what that has to do with suppliers...

[@satwatchers]

Buddy! I did exactly as you showed for 10 seconds and now my battery is sitting in the charger charging up. Thanks!!! 👍🏻

[@CosmicKittyCamp]

Thank you very much from NC! I was going nuts trying to figure out why a fairly new 5 AH (and those puppies are expensive!) battery wouldn't charge. Your trick solved it in 5 seconds. :-) Much appreciated!

[@beyondthebirdhouse4796]

Chris Coffey - awesome, glad I could help - I’m now taking my batteries out of all of my tools - and I don’t get the Bluetooth batteries anymore

[@birdman858]

This absolutely worked for me just now. Had a 1.0Ah that would do nothing when put onto the charger. No lights when the test button was pushed. Did exactly as in this video. After charging, the battery works as new. Thank you for this.

[@kylesmietanski2527]

Worked for 2 of my batteries I thought were garbage. Thanks!

[@keithfarnsworth6452]

Kyle Smietanski - glad I could help

[@adambaumgardner1126]

Did it with two batteries that weren’t working. Worked for both! You saved me a bunch of money. Subscribed!

[@beyondthebirdhouse4796]

Adam - fantastic, glad I could help!!

[@jimmytate7587]

these lithium batteries chargers will not charge a battery that has been fully discharged. This because when the lithium batteries get below a certain charge level they become unstable . by lifting the charge above that level you fooled the battery charger into thinking the battery had not been fully discharged.

[@larryroberson4640]

Thanks for the battery tips...

[@jennyjenny44]

so then it will work>? I heard it can be dangerous

[@tatebraboy336]

Problem?🤣

[@donowens5883]

Be careful with that battery sometimes they can explode

[@jamesbosma3205]

Brilliant. Just received two replacement batteries from deWalt and one stopped charging after a week. I pulled the two originals out of the garbage, did this procedure, and now have 4 working batteries.

[@carlzirk]

Awesome. I will try now. Yep works! Thanks! I've done a similar thing with golf carts since the relay needs a minimum voltage to turn on the charger.

[@beyondthebirdhouse4796]

Carl Zirk - glad this video helped - good luck (hope it’s just over discharged and not due to a failed cell)

[@lifewiththehamptons2191]

Thanks man. I have a 40v DEWALT trimmer battery that wouldn’t charge after the winter. This is a $150 battery but thankfully DEWALT sent me one under warranty. I had only charged this battery 3 times since bought new. So I knew the battery wasn’t bad, so while searching for ways to possibly fix it I saw your video. Worked perfectly. It’s charging as I speak. Now I have 2 batteries for 2 1/2 hours of solid mowing time. Thank you again.

[@beyondthebirdhouse4796]

Paul - glad to hear it, if the battery was over discharged this tip/trick will boost it enough for the charger to recognize it - I now store and transport my batteries off of the tool to minimize this issue But on rare occasions it can also be caused by a failed internal cell (one of the single cells within the battery fails and the short drains the other cells) - in this instance it will charge and then rapidly discharge (watch for excessive heat during charging) - if this happens you have to warranty out the battery, or after warranty, replace the internal battery cells

[@lifewiththehamptons2191]

Beyond the Birdhouse I used the battery that refused to charge before “ jumping it off” to mow with once it fully charged. Mowed about 20 minutes before dark and checked the usage. It was still showing full charge. It stayed cool during the entire charging cycle. It appears all is good. Thanks again!!

[@bashintosh]

You my friend are a life saver!!! I used 16 gauge wire I had lying around that did the trick if anyone is wondering what gauge works

[@billbog25]

Didn't work at all for me. Had to buy a new battery

[@EliteDronesAZ]

Saved me some cash! Seems to have done the trick on my 4a 20v battery! Thank you sir

[@sohailali5312]

Thank you so much for the tip, really appreciate the info. I ran into the same issue and got it fixed by watching your video. Thanks again for sharing this information. You are a rock star.

[@jwhite0105]

Dude you just saved me a hundred bucks. Work for a electrical company and we have HUNDREDS of batteries that are wrecked over this same issue. Going to see if I can get a few of them back online. FYI guys solid 12 awg is a bit too large to get into the holes. Yet I was able to take my Dykes and trim the end pieces long way to make it fit. If I was going to do it, I’d deft go with some solid 14 awg. Obviously if you have stranded you can make it work, just be careful with the small strands. It can deft shock you or dead short in another hole on the battery if you’re not careful. Thanks again man!

[@bryanfurniss4669]

Abolutely brilliant. So glad I stumbled upon your video. Saved me a lot of money. Thanks a million.

[@B0N3ZNP3WZ]

Thank you! Thank you very much!!! This worked on my 20v Max lithium ion DeWalt battery just as you described. One battery wasn't being recognized by the charger, so i followed your suggestion, ten seconds later the battery that wasn't cooperating, succumbed to my will and the light started blinking. Thanks again, I'm eternally grateful for the $60 you saved me, I'll sing at your next wedding.

[@dylanwood6243]

wow this worked like a champ for me. couldn't find any loose speaker wire so I used foil and I'll be damned if it didn't work. thanks bro.

[@beyondthebirdhouse4796]

Dylan Wood - glad it helped, I used speaker wire but any wire would work that is a moderate gauge - (I wouldn't do this with ultra thin gauge) great MacGyver quick solution using the foil !

[@Foxxie55]

Just ran across your video.. The same thing happened to me about 4-5 years ago.. Bought a 20v DeWalt hammer/drill and one bad battery.. I did the same thing you just did, and the bad battery charged up... BUT after a few months just sitting there not being used or charged it died again... I don't use my tools to much so I didn't recharge it.. I would think if a person uses this that it would keep charging though... A good video to those that needs help with this...

[@beyondthebirdhouse4796]

Foxxie55 - The failure to charge is the result of an overly discharged battery pack - this results from: 1) The charge drops too low for the dewalt charger to recognize the battery pack, which my video helps show you how to solve I’ve found through trial and error: A) keep my batteries charged before storage, and B) separate the battery from the tool when storing or transporting - ever since I’ve done that I haven’t had a battery fully discharge and refusing to charge 2) the second reason a battery drains below charger recognition is due to a failed cell(s) within the battery pack that then drains the other cells - unfortunately my video won’t correct this issue (it might temporally, but the battery pack will discharge rapidly again) ~ if this occurs, obviously use your warranty if available - if you don’t have a warranty option then, athough it’s not my video, here’s a video I recommend that shows you how to rebuild the battery pack (thereby replacing a damaged/failed cell/cells) : kzbin.info/www/bejne/aavLgKOdj7Wir5o

[@cindyworkman3531]

this worked great! thanks so much for making this video. this process worked on all 4 of my batteries. I saved lots of dollars. It was so simple. I told a male friend about this and he thought I was crazy. :)

[@beyondthebirdhouse4796]

Cindy - Happy to help, glad I could save you some time/$$

[@rodgervanausdal5400]

Thanks. First video I clicked on worked! I was pissed when my battery wouldn't charge. I was so happy when you helped me fix it.

[@KeithMegalodonSuperior2Std]

Thank you! This just helped me recover a battery that I thought was broken.

[@keithfarnsworth6452]

Keith - glad I could help!! The failure to charge is the result of an overly discharged battery pack - this results from: 1) The charge drops too low for the dewalt charger to recognize the battery pack, which my video helps show you how to solve I’ve found through trial and error: A) keep my batteries charged before storage, and B) separate the battery from the tool when storing or transporting - ever since I’ve done that I haven’t had a battery fully discharge and refusing to charge 2) the second reason a battery drains below charger recognition is due to a failed cell(s) within the battery pack that then drains the other cells - unfortunately my video won’t correct this issue (it might temporally, but the battery pack will discharge rapidly again) ~ if this occurs, obviously use your warranty if available - if you don’t have a warranty option then, athough it’s not my video, here’s a video I recommend that shows you how to rebuild the battery pack (thereby replacing a damaged/failed cell/cells) : kzbin.info/www/bejne/aavLgKOdj7Wir5o

[@praveenalackal]

You are a life saver. THANK YOU. I just revived my dead battery this way. Was planning to buy a new one. You saved me $70.

[@keithfarnsworth6452]

Praveen - glad I could help, thanks for the feedback

[@beyondthebirdhouse4796]

Praveen - Happy to assist - time and $$ - it’s not just what we make, it’s also what we keep

[@3dstairs562]

Amazing, the hack is still working 2019 !! Thanks man !

[@JL-ur4uj]

I just used your method on my DCB207 battery and my battery is now charging again! Brilliant, thanks for posting this.

[@wesleyfellows8111]

I did it. It works! I believe my battery was flat for to long, a tool I rarely use.

[@antiricergt]

I honestly had my doubts that something this simple would fix my Dewalt battery. It honest to god worked! I done it with this blue wire I have a couple rolls of and after doing it a couple seconds I stuck it on my charger and sure enough it’s blinking, charging. It wasn’t doing anything before before I done this. Thanks for the info I appreciate it.

[@donaldelliott6774]

Thanks!!! Fixed my problem in less than 5 minutes.

[@beyondthebirdhouse4796]

Donald - glad I could help

[@repoman7804]

Thanks for the tip. Your video made me realize that this problem with Li-ion batteries is probably the same issue I have with NiMh rechargeable batteries -- I have a "smart" NiMH charger (one that does some pre-tests prior to charging) that sometimes refuses to charge low quality NiMHs. If I briefly put those batteries on a "dumb" charger (one that applies a charging voltage without any safety checks), then I can move them to the smart charger, and all is well. Your tip to jumpstart the dead battery with a charged one is creating the same effect. I bet there are some Chinese knock offs of the Dewalt charger that skip the tests that are causing the Dewalt to ignore the bad batteries which would be more convenient than using jumper wires.

[@jayburnaby]

Thank you , one battery died after my wife totally drained it, saw your video before I send the battery to the recyle center thanks again

[@Chunkypumpkinhead]

Worked like a charm. Saved me approximately one million hours on the phone with various customer service departments. Super easy. Who knew you could jump a drill battery like a car! I mean, I guess it makes sense, it just didn't occur to me. Thanks for the help!

[@robertkortbein2737]

Thank you so much! Second time I’ve use this technique. Worked both times!

[@keithfarnsworth6452]

Robert Kortbein - glad I could help - The failure to charge is the result of an overly discharged battery pack - this results from: 1) The charge drops too low for the dewalt charger to recognize the battery pack, which my video helps show you how to solve I’ve found through trial and error: A) keep my batteries charged before storage, and B) separate the battery from the tool when storing or transporting - ever since I’ve done that I haven’t had a battery fully discharge and refusing to charge 2) the second reason a battery drains below charger recognition is due to a failed cell(s) within the battery pack that then drains the other cells - unfortunately my video won’t correct this issue ~ if this occurs, obviously italics your warranty if available - if you don’t have a warranty option then, athough it’s not my video, here’s a video I recommend that shows you how to rebuild the battery pack (thereby replacing a damaged/failed cell) : kzbin.info/www/bejne/aavLgKOdj7Wir5o

[@TheOfficialZelus]

thanks a lot dude. reallllllly saved me on this, im using an aftermarket inverter with these and it just killed a new battery. but yup sure enough its charging

[@advilyum]

Unbelievable! Just had the same issue and it worked!! Thanks dude!

[@keithfarnsworth6452]

advilyum awesome - glad I could help

[@mergsTM]

I bought some knock off LED light/USB charger adapter from Amazon and I left it on my DeWalt 20v battery for about a month. The light was off and nothing was plugged into the USB. The adapter drained the battery and it would not charge, exactly as this video showed. I did the jumper trick and then boomsauce! the battery started to charge. Nice trick!

[@michaelbranning8826]

Worked on all 3 batteries! Awesome video thank you!

[@keithfarnsworth6452]

Michael Branning - excellent glad I could help - FYI: I had one of my DeWalt tools that was draining my battery’s so now I disconnect the tools from the battery when I’m done using them

[@alexandrucorchis7532]

Hi need to be same ah battery when you give power .

[@matthewmurphy7525]

You rock bro Im a maintenance supervisor for a change Apartments go to the batteries quite often and they're expensive thank you so much you just saved us some money

[@wilrsjasac]

No freaking way! I'm so glad I looked before buying new! They're so expensive. Thank you thank you thank you! 127 Dewalt resellers disliked

[@smcm8467]

Did the same to mine and it worked! Thanks a lot. Now I have 2 good batteries and that’s what paid for.

[@beyondthebirdhouse4796]

Valleywest Landscaping - glad I could help!!