Dewalt 20v Battery won't charge - FIX

Dewalt DCB203 20v Battery unable to charge solution

[@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!!!

[@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!

[@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.

[@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!!!

[@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

[@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!!!

[@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!

[@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.

[@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

[@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.

[@Wowwwzaaa]

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!

[@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

[@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.

[@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!!

[@toddy5303]

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

[@percaesius7945]

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

[@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 !!

[@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!

[@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!

[@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!

[@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

[@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!

[@cherim3361]

I just discovered it doesn't necessarily even have to be a good battery that kick starts it again. I had two dead batteries. Both DCB201. One wouldn't show any lights at all when put on the charger, and the other would just give a solid red light a second after putting it on. It wouldn't charge, and was only registering 3.97 Volts with a multimeter. The one that wouldn't give any lights at all wouldn't even register on my multimeter. I linked them together like this video, and now both have fully charged, and neither would before.

[@keithfarnsworth6452]

Cheri M - 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

[@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

[@StephenPersky70]

Great video. Thanks for demonstrating with very good details of exactly what you did. I especially appreciate showing exactly how you connected the wires.

[@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!!

[@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.

[@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..

[@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!

[@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.

[@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.

[@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 !

[@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

[@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!

[@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

[@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

[@baycap10]

Incredible. Just before I was about to drop $79 for a replacement battery, I found your video. I was skeptical, but it worked perfectly! Thanks!

[@beyondthebirdhouse4796]

Baycap - glad I could help, I’m all about saving a few bucks

[@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.

[@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

[@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

[@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)

[@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.

[@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)

[@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...

[@seacoast6351]

I’ve been having some bad luck with youtube tutorials recently till your video! It worked! Now I need to find out how to get my desalt brushless impact to stop lighting up whenever there is a battery in it. I took it apart enough to find a mess of glued together switch/circuit board nonsense. I blew as much debris out with 200psi of compressed air. Still won’t turn off.

[@MrSchrig]

Friggin' brilliant...3 completely dead batteries on my shelf all brought back to life--including a flex-volt. Wires did get very hot in just a few seconds but it worked perfectly.

[@3dstairs562]

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

[@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

[@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!

[@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!

[@stanleyarczvnski1449]

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

[@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

[@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

[@philthomas7485]

What a great video! I was stumped. Your easy fix saved the day. I was ready to buy new batteries.

[@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!

[@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

[@rodmoniz3339]

Wow it worked! You just saved me buying a new battery. The battery that wasn’t charging was only used a handful of times and was my spare. Thank you for this great video, much appreciated! 👍🏼

[@wilkcm]

Another thanks here. I had actually just called Dewalt to get a warranty replacement (which was super easy by the way) on a 5AH battery what was less than a month old. Then found your video and got the the original working. The battery was in my cordless air compressor with a flashlight. Pretty sure the flashlight was left on, and drained it completely.

[@bryanfurniss4669]

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

[@kylesmietanski2527]

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

[@keithfarnsworth6452]

Kyle Smietanski - glad I could help

[@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

[@satwatchers]

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

[@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

[@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

[@JL-ur4uj]

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

[@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!

[@wesleyfellows8111]

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

[@donaldelliott6774]

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

[@beyondthebirdhouse4796]

Donald - glad I could help

[@thomasmoxham1242]

Thank you for sharing your knowledge. You saved me from replacing my battery needlessly.

[@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.

[@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 !

[@JasonLefevers]

Amazing. I had the same issue with a practically brand new battery and this worked perfectly. I wonder what causes these batteries to do this.

[@beyondthebirdhouse4796]

Jason Lefevers - I’ve found it can be a tool that will drain the battery if left in tool for storage - On one of my batteries it had a damaged cell, that would drain the other cells (if that’s the case, then the only solution is to rebuild the battery cell pack).

[@JensRoland]

It’ll happen if the battery fully discharges, for example if it’s left in a tool that’s on (like a flashlight) or attached to one of those adapters that lets you use the new style batteries with the older DeWalt tools. The battery has a built in protection circuit that shuts itself off if the battery is overdischarged. Connecting the other battery resets this circuit.

[@someguylostintime]

Thanks for the great tip. I was slightly dubious about trying this because every once in a while you run across videos with bad advice or purposely false information but this worked great my battery is charging now. Thanks for the great tip!

[@beyondthebirdhouse4796]

Jason Ford - happy to help - I'm all about saving $$ and 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 $$

[@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/$$

[@mrtndnwntr]

Thank you, I thought I needed a new battery. Worked great!

[@keithfarnsworth6452]

Martin - glad it helped

[@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.

[@jebediahjack]

I was just about to go get new batteries and came across this video. It worked just as described and all my batteries are back in operating condition. Thanks!

[@keithfarnsworth6452]

jebediah jack - glad I could help !!

[@richardsisto7515]

You are the man!!! Jump started the other battery right up. Thanks

[@beyondthebirdhouse4796]

Richard - just happy I could assist, save you some time of replacement and some change in your pocket !

[@jonbonnstetter636]

I'm about to try it right now. Hope it works. Thanks in advance!

[@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!!

[@bobbertels959]

Just did this procedure on a year old DCB204 and worked like a charm...thanks!!!

[@kennyseed1156]

Thanks, this helped me fix my battery!

[@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!

[@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!

[@raymond1001]

It works! Thanks so much for video. I had my battery not charged for a year and glad I can revive it and save myself some money. Also save the environment too. Thanks So much!!

[@beyondthebirdhouse4796]

Raymond - glad you found my video helpful, happy to help!

[@user-kl9mc8ey9f]

СПАСИБО!!!Реально съэкономил мне кучу денег!:)))

[@beyondthebirdhouse4796]

Дмитрий Чилиец - great, glad it was helpful !!

[@zayedb11]

Love and peace from Dubai you saved again

[@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.

[@Benjamtart]

Worked on my 18v 2Ah Dewalt battery from the UK that was delivered completely flat, saved me having to send it back! Many thanks!

[@beyondthebirdhouse4796]

Ben Tipton - glad it helped you get up and running - avoiding the time, expense and headache of exchanging via the Dewalt warranty process

[@tonycirino286]

Worked like a charm for me!! Thanks for saving me some money!

[@beyondthebirdhouse4796]

Tony Cirino, glad it helped you save a battery and some cash - thanks for watching, please subscribe and I hope to bringing some more ideas, tool reviews and projects soon!

[@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 .

[@denislefebvre2852]

Thank you so very much! This worked like charm, and on an 18v type pack that has been discontinued no less. You’re a gentleman!

[@beyondthebirdhouse4796]

Glad I could help!

[@deejay4922]

Excellent safe hack. Thank you. In my case the problem was with an 18/54 Flex Volt battery. I had left it in an older "post" type adapter (adapts slide type batteries to the old post type tools). Amazon's feedback has comments about these adapters discharging batteries even while not in use so that's what happened. Thanks again for saving DeWalt owners money & grief.

[@beyondthebirdhouse4796]

Glad I could help!

[@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

[@advilyum]

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

[@keithfarnsworth6452]

advilyum awesome - glad I could help

[@mchristopher]

Omg. Thank you! My batteries would sometimes charge and sometimes not. Just got two new ones and they wouldn’t charge at all. This worked like a charm. I’ve had these tools for many years an not know why they sometimes wouldn’t charge. Thank you!

[@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

[@bgbii5794]

Much appreciated... just did the same to my battery and it's now charging

[@beyondthebirdhouse4796]

Gabriel - Happy to assist !!