Repairing Two dead 18 volt Li-ion DeWalt Battery Packs - 899
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- čas přidán 21. 11. 2019
- I like messing with batteries,, and I like fixing stuff,, so trying to fix a broken battery,, is a win win :-)
My fix here is not optimal,, all the old cells in the first DeWalt battery is still all rusty and stuff. But I do believe the whole battery would be fine for some time, if nothing else happens.
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/ myplayhouse
Even just 1$ a month, comes out to the same as Binge-watching like 400+ of me Videos every month.
My PlayHouse is a channel where i will show, what i am working on. I have this house, it is 168 Square Meters / 1808.3ft² and it is full, of half-finished projects.
I love working with heating, insulation, Servers, computers, Datacenter, green power, alternative energy, solar, wind and more. It all costs, but I'm trying to get the most out of my money, and my time. - Věda a technologie
Best Dewalt battery video I have found. Just had a battery session. Thanks and best wishes.
Hi Sean Healy
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
Perfect timing for this video, I'm in the same boat. One of my batteries lasts like 1 minute before being fully depleted.
Hope part of this video, will help in some way 😁
interesting points ,if anyone else is searching for reconditioning a battery try Jons Mender Guide (Have a quick look on google cant remember the place now ) ? Ive heard some interesting things about it and my friend got amazing results with it.
You do realise we all just watching Morton in the basement sniffing acid... love your video dude keep up the good work :)
Hi navskin
Thank You very much! Ohh yes I do know that :-)
- glad you liked the video :-)
Thank you for watching! :-)
Ive just started getting the parts to build my own packs for my dewalt stuff an this has been the most useful video i've found. I now know which way + and - are!!
Awesome, thank you!
@@MyPlayHouse Check out my channel and you'll see my progression. cornz38
A small neodymium magnet on the end of the crocodile clip works as a good contact... I do it all the time and works a treat... 👍
Hi brooke robertson
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
Omg, that is such a stupid simple amazing trick I had never thought of! I work on emergency vehicle radios/lights etc. that would be so handy. Thanks!!!
@@MyPlayHouse bro you don t have to suck it up to her ! Just bcoz she made a comment , doesnt mean that she is gonna hook up with you😂😂😂
The DeWalt batteries are as expensive as the damn tool that uses them here in the U.S.A. So I don't know where you got your info. Hence the reason I was looking for a battery revival video. Thanx Chief!
Well you just about get two batteries for the price we pay for one,,, I drool when prices from amazone.com
I just bought some brand new 5Ah DeWALT batteries and I could very clearly see a dielectric grease on the contacts before ever inserting them into a tool or charger. It stands to reason that people should try some fresh bulb grease before assuming there is anything wrong.
Hi Emmett Turner
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
You know I got a few of tho's I need to fit mine. Thanks for the video sir. God Bless.
Hi Bobby's Solar Homestead
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
Looks like there's no BMS, meaning those other tabs are for the charger to see the cells, if you have one bad cell in both batteries, it may be worthwhile to get a new charger. Not for this case but just for someone else who may be watching. Whenever I see cells in this condition, it just proves to me how safe these Genuine cells are.
I believe the charger is the BMS, there was wires for that.
Hej Morten. Super video du har lavet :-) Jeg har selv fundet 2 battericeller som er defekte, ud fra din video. Hvor finder jeg nye celler? Hvad kalder man størrelsen. Det er det samme batteri som i din video.
HI Lars Rasmussen
My channel is English, and to make sure as many as possible, can also enjoy the comments, they are also English.
Please keep to English.
Thank you for watching! :-)
These batteries are essentially "dumb". The charger regulates them while charging and the tool regulates them and prevents over discharge. Dewalt sells an adapter that enables these batteries to be used with the older tools, which can result in the batteries over-discharging, then will not charge because they are too low. Ask me how I know, haha. A quick tickle with a power supply will bring them back enough to re-enable charging on the charger.
Hi Ein Felder
Thank You very much! I do not have any DeWalt tools myself :-/ did ask my nabo,, but he had the old ones.
Thank you for watching! :-)
Damn they must of dropped that pack in water rusted pretty bad, just repaired my 6 ah flex volt one of battery spot welds came un-done so I just soldered it back together and seems to be working fine now also cleaned the connectors with some rubbing alcohol and a toothbrush where you slide the battery in the charger should be bulletproof now!
Hi Christian Rosas
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
Nice informative video, thanks.
Hi Stephen Gordon
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
Thank you I believe this was very helpful indeed
Hi Jeffrey Hicks
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
Mixing high-current and normal cells might not give the result you're looking for. Tool batteries are usually low capacity but can deliver silly amounts of power (20-30C is common, so they'll deliver 40-60 amps), while laptop cells are higher capacity but can't deliver the amps.
Luckily the other old cells was old and beat up 🤕 with some luck, they can deliver the same now. But you are right.
It would be fine for a dewalt light or something but yeah in a drill it would become unbalanced after the first screw😅 good video though that first battery was really in bad shape
So what is your solution to a bad 20v Li battery
@@markhumannjr.5585 Replace all five / ten cells with new ones or find the same cells from a similar bad pack and cobble together one good pack. Note that Makita blows an electronic fuse somewhere when the pack goes bad, so you can't as easily repair those.
Sounds good. Somehow I've managed to ruin 6 of my 9 dewalt batteries so I'm hoping to get back 4 of them using the cells in The other 2.
On the first battery pack, maybe the leds were faulty. Could have used the diode test option on your multimeter to check them.
That is a possibility, I could not see where the leds went to.
I had the battery leds error too
I cleaned my little circuit board with alcohol and it now works fine. drip a bit down the switch, no idea why it works but it does
Hope the video helped. :-)
To clean them up you can use some distilled water and submerge them, then brush it's best to separate the electronics as it's not a good idea to get chips wet while passing any electricity though them, but the cells are ok (though the electrolyte that's leaked can cause the water to be conductive so i wouldn't leave there for long), cleaning it on a tap should also be ok they're bad anyway XD, alternatively you can use mineral oil or even after you clean them up just use a brush and some mineral/motor oil and that will surely stop the corrosion or at least preserve the battery as is for a little longer. Oh and i'm not sure what electrolyte is used on these cells but some baking soda or some citric acid even can help depending on what it is :D but i would look up online for the composition of that particular cell that will stop further corrosion.
Ahh I only got a few lines down,, before it is just a new battery 🔋 in my book 📖.
I wonder if the TH pin is for a thermal measurement, and the ID pin tells the charger that a battery is present and to what voltage to charge it to. I have no evidence of this, but it sounds good.
Good suggestions!
Try Ohm/Resistance ground and TH. Depending which type I think it’s something between 2k and 11k ohms
Th is the thermistor, the ID pin is just that, it tells the charger that this is a 2-5ah battery. This is because some of the xr range of cells can take different amounts of current. It's the reason why a 2ah battery charges in the roughly the same amount of time as a 5ah battery (charger depending)
Very interesting and informative video - I don't have the technical knowledge to understand all you said but I think I got my head around the basics so I can strip my batteries down and take some readings. I have 3 20v batteries for my Graco paint sprayer and they are all dead, or at least very, very ill. I try to charge them and it looks okay for a few minutes and then the green light stays on saying they are charged. Put them back in the gun and press the trigger and there is a few seconds of the pump working and that is it. I have not used the gun for two to three years and I know this is not good for lithium-ion batteries. Could you please tell me how I identify the batteries so that I can order some new one ? Many thanks. Just s a matter of interest the paint sprayer is about 6 years old and of course Graco have re-designed them and the new design uses DeWalt batteries. Replacements for mine where over 200 euros each !
Hope you manage to fix them!
Likely, the best course would be to replace all the cells in the device to new. A bummer, but much cheaper than replacing the pack.
Those yellow dewalt cordless batteries are the best and longest lasting. ( made in Japan) newer ones are made in Korea! I see by your tools you're into electronics techie work ? Like me. Nice!
Hi Dragan
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
enjoy this video having a go out repairing mine now :)
Best of luck! hope it works out for you.
@@MyPlayHouse Nope it never but I really enjoyed trying to fix it lol
quite funny to see that powersupply of yours, i made one on ats my self, some 30 years ago 🙂
Thank You,, mine has broke,, again,, and I have not fixed it for quit a while now,, need to do that.
@@MyPlayHouse well i never got the one i made, with me home, though now i would love to have it.
I opened a Dewalt battery to rebuild. The nickel strips are really thick and my spot welding machine could not weld them. But the wires going to each series of cells were very thin. The board is also too small. Strange arrangement. The bms is in the charger?
The thin wires are most likely the balancing from the BMS,, they mostly measure voltages,, they do not need to be thick.
When I individually test my batteries I get 4.00-4.05 volts per battery on 20v battery but when I test them all together Its 0.02? What’s wrong with it. My drill won’t work. It overheated when I was drilling a hole with a dull hole attachment.
I think you might have lost a connection,, batteries not in series anymore.
hvad hedder de røde batterier du udskifter og hvor kan de købes
HI Silas Eriksen
My channel is English, and to make sure as many as possible, can also enjoy the comments, they are also English.
Please keep to English.
Thank you for watching! :-)
if you dont have a security tork you can snap the pin in the middle with a small flat head screwdriver ans use a regular tork
Thank You,,Yes I have also had luck with that :-)
is it ok to replace the cells to make a 3Ah pack into a 6ah pack?
Yes if you have all new and better cells for it,, I would expect that to work.
What brand were the cells inside? Samsung? And item no plz? And max discharge rate? 20A or 30A?
Thanks
Sorry, I do not have the battery to look.
@@MyPlayHouse ok man thanks anyway
" it has a sweet smell to it!! Probably don't sniff it!!! 😆
Well it´s safer than tasting :-)
I Believe the TH is the thermal pin so the tool doesnt overheat the battery
Hi Razvan-Cristian Marian
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
Looking at the state of the cells just shows how they have been mistreated :-(.
Was your psu built on transistors or op amps?
Humm I build that in 1993,, I think op amp .. but I do for sure not want to set any money 💰 on that!
Not saying they don’t cost more where you are but DeWALT 5Ah batteries are ridiculously expensive in the USA too. Certainly not “next to nothing.” If you did a search that gave you that impression you probably saw fakes.
I do think the prices differences has gotten a bit smaller the last few years :-)
Hey Morten kind of off topic, but would you say a Dell R710 with dual xeon E5640 and 16 gigs of RAM for about. 100 euro shipped from Germany is a good deal? 😊
I got 2x R510s with 32GB of ram from a security company that wanted someone responsible to repurpose them (found them on marktplaats) here in the netherlands i paid 200 EUR for both, really good deal i think it's a good deal for your R710 specially if it's shipped, ram is cheap so. Make sure it's got all the bays drives and controllers though mine both had 12x 2TB SAS (24 drives total) and both power supplies only missing the rails.
@@dashtesla hey thanks i think so too, i will consider it for a nerd tinkering real server ar home :D
Yes the price is right! And like Dash says,, ask if they have the disk trays.
@@MyPlayHouse hey Morten, cool :D, yeah thats a good tip i will remember that
you could use your multimeter on diode test to check the "light emitting diodes" on the battery tester
Hi Colin Devaux
Thank You very much! yes,, or just put 1v over them :-)
Thank you for watching! :-)
why not remove all the rusted metal connectors and then weld new on them cells?
Time,, this was 2 hours of messing around ;-) and I did not get to keep them,, and have no tools 🛠 that are DeWALT.
Where do u get replacement battery cells from?
In these batteries there are 18650 cells ,,, and they are widely available,, just search for them.
In these batteries there are 18650 cells ,,, and they are widely available,, just search for them.
Did your mechanic ever try using one you swap cells ?
Yes,, they were non very good,, worked,, but not for long.
@@MyPlayHouse this tool comes in handy measuring internal resistance of those cells
easier than using the 1ohm resistor
SM8124A
i ordered from Aliexpress
m.aliexpress.com/item/33010929738.html?trace=wwwdetail2mobilesitedetail
I do not understand why you do not install new batteries with the defective battery right away?
and why did not you clean the whole thing right away?
Hi Natur Erleben
Time,, it's not worth the time really fixing a battery that is this fare gone,, If I was not filming it I would have just "retired" the first really bad battery :-) It can't really be trusted to last very long.
Thank you for watching! :-)
@@MyPlayHouse Okay, I can understand that. I once looked, a new battery costs about 100 euros. That's why I thought you were doing something more :D
Usually a couple of cells will be dead. ( it happens on my LIPO too, ive notice)
It's sort of a pain in the arss to resolder....I recycle , rebuild different packs for
other usage....Mostly for Kiddie's toys, R/C, powerwheels...ect.
I usually build 6s at 6600 mah...Try to keep all the good cell for best or good packs..I know I wont get 6600 mah out of them....but 1/2 hour of play time
on powerwheels at 24V is plenty fun for the kids....
I have 6 packs...i can run 6 powerwheels all at the same times.
i can take all my grand kids (3-ea) on a 2-3 mile drive or to the park.
1 hour drive time for each car.....I have multiple lithium r/c chargers.
I can recharge all the batteries within 2-3 hours,,,
Sometimes the kids drives there powerwheels 2-3 times p/day.lol
The grand kids loves it..i get use powerwheels for only $50...
Most of the time the acid batteries are missing...( I dont mind.lol)
I have over 10 powerwheels....i rather save my lipo for my R/C..
Powerwheels 12V batteries are $60.lol
The Lion Batteries are FREE...i got from the contractor working on our house.
He has better things to do than to save Lion batteries....Im retired.lol
It's hit and miss ...some pack...only 1 cell drop below 2.2...
Other times..the diaphram has to be reset...They'll simply come back up to
3.6 once the connection is made again.
other times 3-4 cells are dead.
I usually try to recharge the cells...see which one will hold charge.
i have couple of FAKE Imax chargers...they're STUPID,,
It'll let me recharge at .3 volts.lmao
My real Imax..is too damn smart to revive cells...hahaha
Sometimes they'll charge back up..but lose charge ( So I just toss them out)
I dont mix the C RATINGS or mah.
You'll have to look up the part # on the cells...
I also recycle laptops cells...they're only 10-15C..It's fine on the power wheels
at 6s...not as fast as 30c......but it's still faster than 18V-20V.
Definitely faster than 12V.lol
My 5s 50c lipo has about the same power. Those batteries are expensive.
Is there no bms on that?
Apparently it is in the charger..
funny note, black and decker is the same company as dewalt:P
Hi plasmar1
Thank You very much! Yes,, that is indeed weird,,
Thank you for watching! :-)
They make a lithium ion charger that brings back very low charge batterys I got it on e bay name of it is x tar vg4 it charges 4 batteries at once make sure u use the same battery but you already know that
Hi Jim Catanzaro
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
what cell are this red ?samsung?or lg?
Hi Tatăl Luptătorilor
Ahh sorry I did not look..
Thank you for watching! :-)
sanyo ur18650fx generally @ 20a max discharge
is it possible you can send me the dewalt housing please? really need them. I will pay for shipping thanks
No,, I was fixing these for someone else.
Th = thermistor?
Hi Rafał Gadomski
Thank You very much! Temperature nice :-)
Thank you for watching! :-)
If the battery is advertised as 18v why can you read a higher volatile of 20v?
Thanks
Voltage not volatile!
Yes,, there is 5 cells of Li-ion 18650 inside and they go from about 3 - 4.2 volt,, so from 15 - 21volt
the cells nominal voltages is 3,7volt and 5*3,7 is 18,5Volt witch is why we in EU buy a 18volt battery. The same battery in the US will say 20volt so that is probably what the battery shows fully charge.
Next to nothing my ass. Those dudes are $100 each here in USA at Lowes. And the more the amps the higher the price.
You get 2* 6.0AH on Amazon in the US for just $129,, that is about the prices we pay for one.
Throw that first pack out..it's toast!
Hi David Smith
I am not disagreeing with that,, it just became a bit of a challenge to try and fix it :-)
Thank you for watching! :-)
Can you fix my battery too?
Propoly not worth the shipping forth and back :-/
Did He Say Americans Pay next to Nothing for Dewalt batteries. Thats Crazy talk.
Well if you want to pay a lot more come here....
Probably don't sniff it🤣
I want tell, if you don't :-)
🖐🎓🏆🎓
Hi Kacper
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
that first pack should just be disposed of. Batteries are in bad shape with none safely salvageable, and the battery case was not very pretty either. If your pack isn't more than 4-5 years old and hasn't seen really heavy use, then many times changing a bad cell is worth it, or possibly salvaging some good cells from them to use in other projects. A good money maker if you have a spot welder, is to purchase dewalt plastic casings, and add in your own salvaged cells. Refurbished packs can make you a decent amount of money but I would suggest selling locally to avoid costly shipping.
Thank you very much.
$50 a battery in the US is not next to nothing. lol
Prices has gotten better,, you pay $73 for a DeWalt 18V 5Ah battery,, we pay $101 for the same.
@@MyPlayHouse It is expensive either way. :)
I look for clearance deals on different brands, 18-24 volt. I modded my rigid brushless drill to take any battery (which is flat without the neck). Packs mount with Velcro. I have 6 batteries, 18-24 volt and each battery cost less than $15. Some under $10. Just goes to show you how being locked into an ecosystem costs.
Guten tickle! Sayin hi from the states. Hey great vid!
How do I know the difference between a 4 amp hour and 5 amp hour battery? Meaning, what is the difference in the cells?
I bought some generic 20 volt batteries off Amazon and I’m trying to check to see if they’re pulling a fast one on the consumer.
Thank you 🙏
Yes,, from 4 to 5Ah,, it is only the quality of the cells that change. There are 10 cells in there but 5 cells in series and 2 parallel. So a 4Ah has 2x2000mAh cells and 5Ah has 2x2500mAh.
@@MyPlayHouseOhhhhhh okay I understand now. Thank you so much!
😛
🤔
Costs nothing in the US? 150 dollars for two batteries is nothing, to you?
It is not nothing,, but it is almost ½ prices.
@@MyPlayHouse I'll give you that point. =0) Still hurts the wallet.
you need a comb.
Hi Jr Rojas
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
first!!!!
Sorry I am on my phone 📱
STEVEN LONG IS STILL AWESOME 👏😁
You should allways replace all cells. Other cells will fail soon.
Hi kurbizza
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
They didn't die from old age or usage pattern. They were damaged from the rust shorting them. So why would the other cells all fail soon? Hmm?
You're a Ryobi guy SMH
Laughing all the way to the bank :-)
@@MyPlayHouse That`s what the guys at work say too but for every 2 or 3 tools they go thru i`m still using the same Dewalt tool. But often it`s the initial cost that has the final say.
You have FAKE batteries.
Why do you think so.
This video is totally insane. Don't be a cheapskate. It's better to buy a new battery pack than to replace your house when it burns down. These batteries are dangerous. You might succeed in getting the battery pack working again but the safety will be compromised.
From your comment, I am guessing that you are from the US,, and I would will agree with you,, that you should probably just get a new battery,, and you get good prices on replacement batteries in the US.
You completely missed the point of this video.
Keep in mind that the 18650 batts are offered with or without safety fuses the cost is the same for both so that leaves a little room for those that like to fiddle with things. The only draw back is that the Chinese cheapo ones sometimes pop the fuses but will work again if you remove the fuse.
You need the original charger to see IF they accept a charge.
Some protection PCB's will refuse to allow charging if it is removed from the pack voltage.
Any feedback from the mechanic ?
Good video otherwise.
Hi A6D6E6
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)