What's Inside a Dewalt 60v Battery That Won't Charge
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- Опубліковано 29 вер 2024
- For some reason I have a Dewalt 60v battery that doesn't like to charge properly. Started out claiming it was fully charge but then when I would go to use it, it would die instantly. So what do you do? Take it apart of course and see what there is to see! We found as I suspected one cell is completely out. Unfortunately getting the cell out looks like it would be a lot of work and Dewalt appears to offer a warranty so, going to try that first instead.
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The cells in these batteries should measure between 3.0 and 4.2 volts under normal circumstances. From my experience cells between 1-3 volts will charge back up and become useable again but most chargers won't charge them. You will need to use a dc power supply to charge them up to at least 3v before the regular charger will work. If the cell is below 1v it is dead and will not accept a charge so basically trash.
Correct even if they are 1-3v they are probably no good at that point, yes they may charge back up, but have probably lost most of their capacity at that point. I've worked with these types of batteries in the RC world and as such have a couple of special chargers, including one that has a special mode on it for discharged lithium cells.
I'm on warranty battery number two for a DCB609 battery. The original out of the box and both batteries dewalt sent as warranty batteries have been bad right out of the box. Ridiculous. At least they don't badger me when I've called about it, but I have yet to get a battery that will charge...
I've heard they have had problems with these batteries, the larger 60v 9 Amp ones are better apparently
@@radozeman I might have been prematre about my conclusion. The fact remains the original battery that came w/ the tool, wouldn't charge in the charger that came in the same box. Nor would the 9ah flexvolt charge in any other charger I had that was the same model as received in the tool kit. An off brand Amazon special charger WOULD charge the dewalt flexvolt. Wtf dewalt?!
Each cell is 4.2v .. that cell obviously died from being un balanced. Thank you.. just bought that pack and every month I'll check them and balance them with a Hobbie charger. My packs going on my ebike in parallel with the craftsman 60v 2.5 ah. .
Interesting adapting it to an e bike? That’s cool!
@@radozeman works great on the flat ground.. it hates big hills.
And thanks for showing me inside it! Much much appreciated 🙏
Switching from a 20v to a 60 v without charging in between prob not a good practice
For what they charge for these, that just BS.
Add up the coat for decent lithium cells they are not that far off!
The original 6ah/ "2ah @54v" have been very problematic for us. I always encourage flexvolt users to upgrade to atleast the 9ah/3ah or if they can swing it, the 12ah/4ah. Superior cells. 18650 cells are ok. But if you want the power, the 9ah and 12ah batteries both use 21700 cells. The difference in power alone is more than worth it. Same way with the fatter packs on the 18v line or 20v max as dewalt calls it. The 3ah, 6ah, and new 4ah and 8ah packs are 21700 cell batteries.
I'm a huge fan of the sexy flexy line. But I've had too much trouble with their 20v max batteries and tools, and the 6ah/2ah flexy batteries.
I've never had the same issues with milwaukee fuel tools and the m18 or m12 batteries for some reason. The warranty process is what pushed me from buying more dewalt for now. 7 months and 4 brand new dewalt 10 inch wet saws later just to get a proper working saw is crappy. And is why I pretty well run fuel everything except the bigger tools, like miter saws, big flexy grinders, table saws tile saws. Hopefully dewalt will update their warranty policy. I have sent in Milwaukee tools for little crap and the warranty is only 2nd to Hilti. Heck we found a 3 year old impact wrench that intermittently wouldn't impact, was damp, and in the back of a work truck we bought at auction. I sent it in (without a reciept or anything at that.) Got a brand spanking new one back in less than a week. No questions asked. Might not be a big deal for diy or weekend warriors, but it was a huge deal as a builder. @DeWalt hopefully you see these posts and can come up with more reasonable solutions for defective tools and batteries. We have a pretty fat stack of bad batteries at the shop, that have little use, and some didn't make it through a single charge cycle...but the 1 year warranty period is up. Nedless to say, i check the dates when buying new dewalt tools, tool kits, and batteries from anywhere now... Ok, off my soapbox, thanks for the video! 👍💯
And again....Come one dewalt, I want to proudly recommend you like back in the nicad tools days! When you dominated. Warranty is a make it or break it deal for us that spend a few thousand on tools each year! 🤙
Oh I agree, I like the 20/60v line, I like that I can use one battery for multiple tools. Milwaukee from what I've been told has the same problem with their batteries that use the same cells.
Yeah man, I've been with dewalt for over a decade and my enthusiasm has gone from "FUCKIN GREAT" to "pretty good" with hesitation. Similarly I have a stack of dead packs, as of today I've managed to revive a couple with just a dc power supply "boosting" the voltage back in to chargeable range...but I obviously shouldn't have to do that.
@@radozeman I do hear those stories. I've never personally had an issue with any of our Milwaukee batteries. But they do see constant use, so they're not sitting around on a charger fully charged for weeks or months on end. I think the technology in the pack and tool is what keeps the Milwaukee battery from killing itself. I've had a couple packs apart recently just to check 'em out, and there's alot more to it than just a bms. I'm pretty impressed with the packs and circuitry. I honestly think the dewalt packs that are burning up or randomly quitting is 100% related to heat and balancing. Or maybe lack of proper balancing. But not the cells themselves. I'm not a scientist so I'm not certain.
Just an observation 👍
Just had one of these 6ah packs less than a year old stop working on 60v tools, strangely still works for 20v.. I did contact Dewalt and surprisingly they are sending a new one, did not have to supply the receipt but they asked and I'm guessing if it happens again, they will.. I've got a bunch of Dewalt stuff and never had a problem till now. Not a pro, just a frequent home user with big projects.. Anyway, thanks for sharing, good info!
My 9 ah is down at the moment but 6 ah is up and running.
My 60 V battery got wet now won't charge what should I do
As you can see, the 9.0ah is a good bit bigger than the 6.0ah. that's because the 9.0ah uses larger 21700 (21mm across the top, 70mm tall) cells, where the 6.0ah uses 18650 (18mm across the ends, 65mm tall) cells. As for voltage, both of the different cell sizes should be right about 4v with a full charge and no load. Running voltage with a load should be in the 3.6v range. It's important to note that DeWalt's 20v and 60v batteries drop down to around 18v and 54v respectively under loads, so that's why they're called Max. A DeWalt 20v pack has the same cells and voltage under load as any other 18v lithium ion pack, but DeWalt markets the max voltage to make them sound better. The Flexvolt packs each have 15 cells in rows of 5, each row is in series making approx 18-20v. The rows are connected in parallel or series depending on what tool they're connected to. If you look at DeWalt's batteries in Europe, they actually rate the Flexvolt as 18v/54v, maybe because of some regulation or something. I've actually never seen a Flexvolt battery open before, looks very complex and very hard to fix without shorting something out. But that's the price to pay for a dual voltage battery. Thanks for teardown video!
Yes, those 9.0s are big! Thought about getting some of the 12s, but you can buy 2 9s for the price of one 12. If you could get the cell out without having to tear the entire battery apart it would not have been that hard.
Pushing the top cap from underworked for me on many batteries. It needed a sharp pin through one of the top holes and press down. Don't press it too much and not exactly on edge otherwise will hiss and the gases and the electrolyte can come out there. Happened to me and after hissing got back sealed and the pressure released. A small and hard screwdriver and enlarging the side holes all around worked for me many times. Usually can be tested if this is the safety cap with an ohmmeter. If It does not display any continuity in this issue. Most of the time will work after releasing the pressure or pushing it down all around for a while. The issue is that it can happen very often after this since probably that cell overheats. You can as well connect plus and minus with a wire for a lower voltage. Not sure how the BMS will respond but at least all the rest of the cells will be able to output their power. For sure the battery will be weaker and will need charging often. Any battery even not holding charge must let the charge pass through. Some batteries just got overheated and the gases push the safety cap in a position that disconnects the battery completely. The cells can be harvested for other projects. Will be a waste to just throw it in the bin. Most of them will be good for flashlights, e-cigarettes, and so many other applications. I built a power wall with these cells from laptop batteries with the same issues.
Jumper the positive and negative from a fully charged good battery to that one and then try it
Negative, probably also not safe, if a lithium battery is dead it is typically not safe to recharge.
There samsung lithium ion cells bro
we have 6 tools and now only 3 working batteries 2 60V 9ah failed and 2 20V 5AH failed really falling off the dewalt bandwagon quickly
Wow! Have you contacted DeWalt on them? That's what I did and they sent me a new one! I'd like to say it is a 2 or 3 year warrenty on the 60v!
@@radozeman havent heard back from them yet. went to one of the service centers on their website and found it was gone
2016 is the year the batteries were made means old stock
Well that’s about the time I bought it as well
These batteries are terrible, i know lots of people having same issues, mine just failed on me 😭
This is the only one I have had fail so far! If it is still under warranty DeWalt will replace it!
@@radozeman mine is 3 years old now, 🫣 looked after it still looks new
18650s should be 4.2 volt per battery
Until next time you waste my time
here is a tip
try using a cell and give it a few seconds jump to that cell, and measure again, if it drops like a rock, then cell is bad
jumping it too long might heat up and burn
so make sure when you do the jump
touch the cable and good cell, pull it out if it heats up too quick.
if it is good, try to slow charge it with .50 Amp to get it up to 3.2V then balance charge all cells, then discharge them all then bring them up evenly.
i use either icharger or skyrc q200 charger
Being 0 volts I doubt this cell would come back, I have a similar charger and it would not let me charge, said broken connection
That tip works well from my past experience. Obviously mine did not have a cell at zero.
They are 18650 batteries in the 6.0ah and 2.0ah flexvolt would love to see what's in the older vs of the 9.0ah and 3.0ah flexvolt battery
I'd like to say those are 22650s
@@radozeman what are 22650 the 6.0ah to 2.0ah or you referring to the 9.0ah to the 3.0ah battery which battery are you referring to power tool batteries normally only have eaither 18650 batteries or 21700 batteries they're isn't any lithium ion batteries cells in 22650 the 22650 cells are Lithium Phosphate (LiFePO4) cells
DeWalt uses 18650 HB4 batteries. This mean they are 4.2 Volts, 30 Ah batteries. On August 1, 2019 they can be bought online for $5 or less, if you buy case lots.
That’s what I ended up doing, I did end up fixing that battery pack with another cell.
It's always the same cell that breaks down. Dewalt designed this so that we end up in Home Depot to buy another one. There is really no feasible repair on these batteries.
They don't go off the date the battery was made they go off the date on your receipt
I bought a new battery in packaging from a guy who had some "contacts" if you will. The battery wouldnt hold a charge after 2 years. Emailed dewalt and all they asked for was the date on the battery and model number, not a receipt. I got a new battery in the mail within a week so you sir are dead wrong. I'm here to see if I can repair my 2017 battery
@@mikeantj I'm not wrong you just had a different experience then I have.. i was asked for my receipt so they asked you for the information on the battery instead of your receipt don't make me right or wrong don't make you right or wrong was just a different experience... have a good day
Hello there.. can you do a repair on a 9.0 ah the assembly is different and my battery needs a cell repair but the process is complicated. Thanks
Try putting a jumper wire to delete that one cell. ? Whats there to lose. I have a couple dead ones if you drop them they go bad instantly. I dropped one from about 18 inches off the ground and that was it.
Obviously the two batteries that have the black top came together in the two pack. They would have a yellow one in the same package as the black😂🤦♀️
hello, can you help me find a board for a flexvolt devalt 60volt battery, since the microcircuit is out, the board now does not take charge?
Need put cap to battery to shutdown for 1 each 3-batteries
My DCB609 died after a year of light use. Extremely disappointed in the quality of many modern tools.
Apparantely they have problem with these batteries
@@radozeman the only problem is that there are several expensive things like this failing all at the same time, it's very discouraging, no warranties.
@@radozemanthey are scamming people then i wouldn't buy DeWalt again batteries are too expensive and keep failing
Too bad we missed the secret charger action. Would have been interesting if you'd checked the continuity from the terminals to the actual leads to the tool and see if you had a simple fault from a drop etc.
Good, point I did not check the leads, only the battery, I hooked my charger straight to that cell. And by charger I mean a lithium capable charger for RC batteries.
@@radozeman
Do you still have the battery or did you rma it? I'm about to get my hands on the 1800w "power station" and attempt solar charging 4x 9ah batteries. Have you done anything like that?
Looks like your cells needs to be balanced, not replaced. You can use a balancer or you can charge each bank individually. You need to get each bank to nearly identical voltages so your charger can pick it up and properly charge the battery. I bought like 5 Milwaukee 12.0 and 8.0 batteries for less than $200 cuz they were sold as not working properly. Fixed them all... sold 1 12.0 and bought 3 more "bad batteries" ... now I have 5 of the 12.0s three 8.0 and a 9.0 and 6.0 all High Output. For less than $350
Nice! And yes, the remaining cells probably needed to be balanced (which it should automatically to my understanding), the cell that was bad though needed to be replaced, typically no saving it if it is 0 volts.
Exact same cell is reading 0 on mine too. Must be drawing more power from that one cell
Puedo cargar una bateria de 6 amperes con una cargador normal dewalt??
I find it funny that he took apart a drill batterie with a screw driver
The battery that came with my tool stopped working the same way. I'm thinking it's recall time.
Sounds like they have had problems with the 6 Ah size.
Had a 2017(out of warranty ) 6ah last week not taking a charge. This week another 2017 6ah took a dump.(They really dont get as much use as the 3-4&5AH's ) Tried jumping both(did not work)Disappointing since Im Heavily invested in Dewalt Flexvolt batteries (10, 6AH's ,6, 9ah's)
Still waiting for the recall 😮
The flexvolt batteries have a 2 to 3 year warranty
Three is what I was told by Dewalt
RDAllen you really have one year warranty on battery cells. Go to dewalt website and read the small print.
Its only 1 year in uk
Hi guys I found 2 dead batteries in my 6ah 54v xr dewalt battery.
Replaced them and tested. The all read about 3.5v.
Battery still won't charge any ideas
Check the contact prongs? I grabbed a returned one that won’t change and turns out the b+ prong was not contacting the charger as it was all mangleated.
I just fixed 1 of these and it had a 0.00 volt battery in the same spot, Dewalt may have a problem here
It sounds like they do yes!
No higher then 4.20 no lower then 2.10 or 3.00
The cell is a 18650
I have a question i have a 12 ah flexvolt one cell doesnt work what cell do i need to purchase will the one you bought work for the 12 ah
I don’t recall, if you look through the comments here I think someone left a comment on the different sizes
No receipt needed
That can be fixed
18650 cells
You can always jump start it by connecting the positives and negatives to another flexvolt battery
If it cant be fixed you can use those cells if you pry them out
That’s a good idea!
by my math each cell should have had about 3.5 volts
Depends on the charge state, 60v is probably the half way mark (or maybe 3/4)? Depends on how they market it.
Just got a 20v/60v 6AH flex volt today. Already having charging issues
As in not charging? If you continue to have problems contact DeWalt!
@@radozeman the charger says fully charged, but only 2 of the 3 LED lights go on
@@ricardovarajr try using it then recharge maybe?
@@radozeman didn’t even let me drain the battery. It stopped working. Still has 2 lights on. I’m thinking a bad cell.
I’ve got 3 of them that just goes from flashing on charger and bout second flash it fades off.,! Then try in impact and lights just flash a split second.
They are NOT under warranty after 90 days and must have The receipt as well ,I’d recommend taking those babies back now for the price they are . I’m stuck here with two of them around 8 months old and one tore apart and nowhere to go , except buy $200 worth them (2 pack) on sale right now on Amazon ... Can’t use my grinder because of this B.S.! Just never had any problems with any batteries before either.
Those are all 18650 lithium ion batteries high drain. Same as you would use in most vaporizers. Also, if you could get that bad cell/battery out, you could go to any vape/smoke shop and grab a battery to replace it with. Each battery should read up to 4.27ish volts as read when i charge them for my vaporizer.....also, thats how i fixed mine, and your right, alot of careful work
Actually just a did a video here a few weeks ago where I did fix it and replace the bad cell.
Money must grow on tree's for this guy, warranty is void if you try to repair and yourself.
Great vid, also watched your repair one. Just had the same problem, though mine is slightly different inside. I'll see what I find, hopefully it's just a cell but one of the bms main contacts is fried, guessing that's not good..
Uh no that is not good!
@@radozeman Nope.. I eventually de-soldered the flex circuit boards from either side so I could test the cells(Can't probe a few otherwise, by design no doubt).. All are good, though a couple read over 4v like in your vid, wondering if that caused the problem. Got a new one from Dewalt already so, the fun begins, gonna try reconnecting and resoldering everything once I balance the v
The $0.01 with my trimmer was defective I waited over a year for the new one went to charge the new one for this year's trimming and it won't take a damn charge DeWalt better give me my money
Did you have the battery setting around for a year without using or charging it? If so that definitely is not good for it!
@@radozeman no i only had it sit from january when my neighbor Brought it over since dewalt shipped to wrong address to april 10th I went ahead and told dewalt to just issue a refund since ive now had the trimmer for 2 years damn near and only got to use 3 times living in the midwest thats unacceptable fingera crossed i get my $280 back