The process of recovering Tesla modules from Zero Volt to useable!
ฝัง
- เผยแพร่เมื่อ 2 เม.ย. 2021
- A few weeks ago I had the pleasure to open up a Tesla Powerwall to see how it was built [ video: • Tesla Powerwall Teardo... ] Unfortunately it had discharged the batteries to zero volts. In the previous recovery video, I tried to use the low and slow method to bring the cells back to life, unfortunately, this was unsuccessful [ video: • Tesla Module repair | ... ]. This is now the second attempt to recover this Tesla Powerwall battery using a much higher charge current over 12 hours. Check out the video to see how I went!
Key Components used in this video -
🔵 FLIR Thermal Camera - ebay.us/6kGlbl
🔵 iCharger X6 - s.click.aliexpress.com/e/_A4AxAG
🔵 Tesla cells - ebay.us/KbF1U2
🔵 Bench power supply - ebay.us/hgb5y5
💻💡DIYPowerwalls Community Facebook Group 💡💻
► / diypowerwalls
Second Life Storage Cell Finder -
🔋 Lithium Power - Australia - bit.ly/lithium_power
🔋 Paolo Italy ebay.to/38xPUhT
🔋 Battery Hookup USA bit.ly/batteryhookup (10% coupon 'Powerwalls')
🔋 BigBattery USA bit.ly/big_battery (10% coupon 'Powerwalls')
🔋 Tim De Groot NL ebay.to/2OX9koS
🔋 Power 2 Spare USA ebay.to/2SuJWsr
🔋 Pro-LOX Netherlands ebay.to/2HsyPKr
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Cheap BMS - s.click.aliexpress.com/e/eX4NpXsc
Quality BMS - www.batrium.com
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Learning resources -
🔖 DIY Lithium Batteries- amzn.to/2MC4BaM
🔖 Mobile Solar Power Made Easy - amzn.to/2Tzk6TA
🔖 DIY Solar Power - amzn.to/2IgxfMa
Recommended Gear -
🔵 Clamp AMP Tester -- goo.gl/z8b4uJ
🔵 iCharger X6 - goo.gl/GtBtW9
🔵 Thermal Camera - bit.ly/35qWwgh
Affiliate Stores -
💸 Kit web store - kit.co/HBPowerwall
💸 Amazon Store - www.amazon.com/shop/hbpowerwall
💸 eBay - goo.gl/tk6Qdd
💸 Banggood - goo.gl/1PWhni
Social Media -
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Music -
Thanks for tuning in as always!
Pete
#diypowerwalls #hbpowerwall #18650ed #diypowerwall
![ภาพนี้ก็ฮาเหมือนกันนะเนี้ย #1 SS8 [ พากย์นรก MEME.EXE ] | easy boy](http://i.ytimg.com/vi/Ytc50m91QK8/mqdefault.jpg)
For all that commented Mini - you have a special place in my heart :P
Therefor Love you...
God bless you keep it up
Love from Pakistan
It's cool how you can see the individual hot cells on the thermal. Makes sorting out the junk ones easier.
It sure helps!
@@HBPowerwall Now what we need is a "hacking a dead PowerWall pack with shorted cells so it can be used again" tutorial. I would expect that from the thermal image only the ones that lit up are actually stuffed, so it should be possible to cut them out of circuit from both sides and use the pack for something else with a simple bypass.
For those insisting there’s a way to revive these, it’s important to understand that when lithium batteries are at a low charge state, they form copper shunts that lead to self discharge and possibly a short. The heat exhibited when not charging is clear evidence that this has occurred. Continued efforts to charge could have catastrophic results.
Great demonstration. Thanks
Not quite. The short only happens when reverse charged. An individual cell can go to 0V no problem. In a pack though there is always one that is drained first. That one is reverse charged by the others then.
I loved the analog water temp rig. Awesome!
it's just gota work lol
Great job, your thermal camera now shows you which single cell need some special treatment ;)
All of them lol
Great stuff fella. Very surprising. We’ve lost packs in similar circumstances - namely our Delorean build.
HBPowerwall - Thank you again for another great Video. It is such a shame to see this and know that it will be a boat anchor at most., my power supply turned up last week and my pack with the voltage of over 10v has been charging and is at 22v. I have a security camera on it and multimeter connected so I am monitoring all day. I have rigged it up outside and well away from anything, just encase. I am running 4 amps into it only and it will still take time. I have an IP based 240 volt switch so if it starts to smoke etc i can turn the power of remotely. This pack seems to be ok, no discharge from when I last measured a couple of weeks ago. The other pack was the low voltage one, which I got to 8 volts and has sat there as well. Hoping it will take a charge. Will be putting it on tonight to start to get it up there. I dont have the BMS boards or a icharger yet so I wont push full voltage until I get something in place for that. All going well it might be useable. Keep posting when you do stuff with yours.
Love the thermometer.
Wasn't my idea - but was super simple to see temps at a glance
Time to disassemble. Only takes 1 cell to bring the whole gang down. There could be some good cells left. Enjoy your videos and Thanks for sharing.
Lovely little mini, as a Capri owner with a tiny 1.6 engine of course I want to see you work on the mini.
Start Tomorrow morning, just have to work out the format - all in one video or bits and pieces as i get it done.
Nice work
Thank you! Cheers!
MIIIINIIIIII!!!!!!!!! I came for the powerwall video, subbed for mini! :D
Awesome! Thank you!
Yes mate!!! Lets see the Mini!!
excellent... will do
Cool video. That self discharge is serious !
You got that right! Glad i could water cool it.
@@HBPowerwall
What is wrong with you, have you grown old? Did you accept bad /failed lap top cells inside laptop battery packs defeat you??
It looks to me that the thermal gun might be able to isolate indicate any shorted/damaged/failed cells. That Tesla pack surely has a boat load of useful cells in it.
Are you going to give them up with a few bad ones? Fight, fight, fight for those good cells.
sailingsolar I guess you need to watch the previous video before you conclude
Damn, was looking rather promising until the end :( Good tests though!
Honestly I'm like THIS IS GOING TO WORK 4-6 hours in.... but the water cooling really put me off the fact that there is a really issue there.
Dell laptop power supplies are awesome. Built a 12v buck convertor power supply that uses the 120w/180w dell power supplies, and works a treat.
It does the job nicely - XBOX bricks also work well
You can save good cells from the package but it's a lot of work you will have to disassemble everything and check cell after cell but you decide it could be a great video 👍
Very true! Might yet do it ..
Interesting results. Knew it was very unlikely to wake from the dead, but didn't expect it to act like it was charging.
It accepted a charge - just didn't hold onto it
@@HBPowerwall Most likely to be a handful of bad cells. Now if you could locate which ones then the existing fuses could be leveraged to effectively isolate them.
I'm glad too see you did it I'm impressed the cooling method was on point good work keep it up man....
The cooling loop was bloody awesome!
Full discharge does irreversible electrolyte? separation. That fully charged video where the lady went to the battery factory. They had a quick explain. Pretty cool. Worthy test tho!
It was fun, I like learning this way..
I had this happen also , after getting to the point where you are I then took the battery apart and was surprised that's some of the cells would individually charged up and stay charged While others self drained. U might try snipping the fuse wires on all the hot cells and see if they hold a charge. I think what you have is some of the cells in the group maybe discharging the others.
Might do that yet... Someone else said a short circuit testing the fuses.. I love that idea
@@HBPowerwall I would think you'd have to do it the other way buy fast charging maybe from another battery. Then the shorted cells would blow their fuses and might be more seeable from your heat detector.
Good memory 👍😊
Yes it was
Yeah! Please make a video about building the mini motor.
Done!
As dangerous as these cells are when they're in primo shape, why would anyone want to revive them once they're so far gone? They are a fire hazard waiting to be had. This gentleman did the right thing! Great video!
In a third world country and this is the one chance you had of storing energy? There are reasons for everything and not just the obvious - it was a fun experiment tho and I STILL have it on charge at 0.5amps :P
They're only a danger if you abuse them and don't respect their charge/discharge rate specs.
(For example, a 5000mAh 21700 cell with a 15A discharge continuous and 1C charge rate, stay within those specs)
Behaving similar to a drill battery I'm working on. Was 0 volt. Used some voltage to start the battery cells one group at a time (so 1s2p in a 5s2p pack). one dual group was dead, 2 dual groups had one shorted cell that discharged the other one, one group was heavily corroded so didn't put in the effort. Things I did discover though, is that the "good?" cells would appear to discharge overnight when not on the charger, but would take charge again the next morning. However, each morning I repeated this and several times during the day the batteries kept loosing less and less energy, and started staying at a higher voltage. these are LiIon 3.6v cells. I suspect you have similar issues with that pack, and I'd probably suggest looking at the cells individually.
Besides, as interesting as the modules are, I want to see what the actual cells look like and maybe some of those are individually recoverable. :)
Good job, of course that worked, that's exactly how you recover bad cells. I'm surprised your Dell laptop charger did not explode. The batteries attempt to pull more than one amp for each cell, because there are not resistors. However, I am not certain you are charging that pack correctly with the correct voltage, especially since the battery charger is flashing "not 4.2" volts.
I'm in, build it!
Awesome! me to!
On the bright side, your effort proves conclusively and empirically that a completely discharged cell turns into a resistor. I wonder if you could "recover" a core charge from Tesla. Thanx for the experiment. :)
Great point! I'll tweet @elonmusk lol
Thank you for the video. I have also a problem with the bms kabel. I have teared it plus broke the plug 😲
So you know, where I can get a spare?
Mini build 👍🏽
Ooh I'm liking all the mini comments.. hehe
Just an observation: rain water tanks make great heat sinks. Often cycle water through them bottom to top
If I do another test I'm going to try to do a Thermo spyhen
looking at the floor and i see BCM exhaust header.. ;) i'm planning on putting a "speeduino" in a b-series. and ye si know you cant have port injection. you need a single port injection (even tho i'm going to use two injectors by the throttlebody)
That would be cool! But its carbie for this old girl
Some cells still good apparently; If only it was easier to replace the bad ones
Let's see the Mini!
deal!
Evening mate!
Yeh, she is a bit late! Grab a few comments then i'll go get a few hours shut eye
I would have done everything exactly the same, don’t give up
BTW did you check the output of your power supply? I've a very similar unit and what was on the LED readouts was way off. In fact I got a full refund and did not have the return the PS. I doubt it would make any difference to your results even if yours was the same as mine.
Tx for the great videos Cheers from Melbourne
Hi Pete, see if you can't find a server power supply for the icharger.
They can push 50-100A at 12V :D
I was about to ship you one, then I found at that shipping would be 135 AUD, and that's a bit higher than my budget. :D
But I'm looking forward to you trying the NiMH method I described on Facebook :P
But please do it somewhere in the dessert :D
I have a few different supplies, this one is quick and easy. didn't really want to push higher amps in to it
Wow that is a lot them batteries how long does it take to charge all of them up whenever they're all drained
I'm not sure if i covered it but here is a video I did testing a good Tesla modules
I used an x6 in power supply mode to recover a car battery. I set it to 14v at 20 amp power supply. The only thing is you turn on power supply before you connect it to the battery
Did you recover it or just charge it?
@@HBPowerwall I used it to raise the voltage to 9v on battery and then changed it to BP mode to finish charging at 5 amps, battery still works today.
Ooh cool... glad it worked well!
Man I get the feeling that you cannot sleep just by being so pumped by something this dodgy to actually work. THe same for me when messing with batteries :D
The learning curve is fun and hopefully someone else gets a entertainment from my efforts.
Would love to see some Mini love
Mini love it is! Not the weird kind tho....
You should be checking which cells are the hottest and cut them out so they are not in the circuit. Maybe it work after some cells (worst ones) are removed from the circuit.
Edit: OK, it’s dead, Jim.
Told him this last video just cut the strip
Might try cycle it a few times, before I tare it down
Could be a stupid question but is the module the same as the ones found in a Model S? could you get working ones from a crashed Model S and just plug and play? i have never seen one in real life or anything just going from what i see in videos.
Where are the eggs ?
great video ... and I guess you have hidden the eggs already for the kids to find those on easter sunday.
lol - Fired eggs
Oops. Depends how long its been left, if the cells have been at 0V for a long time then they are hopeless. The only good thing is any really stuffed cells are likely to blow their fuses resulting in lost capacity only.
I hated you right up to the mini reveal. That (I believe) IS a factory color!!!! Congrads. Your my new best Friend. I have a Sunbeam!! 64 and yes it is.
Awesome! Thank you! HAIRY LIME !
How about keeping the pack frame, carefully removing all of the cells, and replacing them with fresh ones ? Is this feasable ? The packs are a perfect fit for the powerwall enclosure and they are watercooled, so it would be cool to be able to reuse them, still.
Lets just say I've looked into it, and not ask any more questions for a few weeks lol
@@HBPowerwall Haha, awesome. Looking forward to seeing your upcoming videos, then :)
we will see how it play out
Tesla don't want you to open these packs. They are that well glued and epoxied together you have to break the battery apart with hammer and chisel to remove single cells.
I have broken down one of these packs to recover cells for my 18650 powerwall and its a 8-10hour excercise plus you loose a few cells in the process. Plus you are left with glue residue on the cells to try clean off also.
@@smdindustries3699
i am sure tesla did not engineer the power wall primarily for do it yourselfers to dismantle it
A Mini!! Yahhhh.
I can see a hybrid coming up?
nar, just a fume producer
Amazing, thanks for these youtubes. Of course I have not personal experience except a few 2nd hand cells at low v (.5v)... where maybe 20% seemed to recover... so I would have thought that after reaching 3.6v at least some of the S(s) would hang there. But as you've shown - no way. Amazing. Just to recap - these packs were simply drained (slowly) to zero volts which destroyed them? Leads to the conclusion that allowing a design that drains to 0v is not a good design :)
Yep a slow painful death, Maybe they fixed this issue in the PW2
Hey you can use those batteries,
For thermal storage! Haha!
I had a similar fieasco with lifepo4 cells that died to death on the shelf, but they all wasn't at 0v. But we're close, the 3.2ah cells were tested to about 30-60 mAh a few were at 1-1.5 ah, but some acted more like capacitors, they would go to 0v nearly didn't get hot until over 3.5v I could discharge, let sit, it would go up to 3.5v, discharge again, about 60 mah, about 4-6 times, without recharge! Luckally I only had about 10cent per cell in them, and the few that were at 1/2 capacity were kinda worth it! I'm going to use them in landscape solar lights! Maybe! Haha,
lol - that's a different take on it
Mini update yes please
Deal !
Not sure how your watercooling setup was, but unless the tubes are free of air you can get some hot spots. Not related to your issues, but putting a trickle through causes one side to be hot/cooler and eventually it will crack and leak. :(
All the air was bled from the loop first.. Clear pipe helps with that a-lot :P
How much effort would it take to build new cells for the tesla powerwall?
Would like to see mini video aswell :)
It will take a lot but i'm already looking into it.. Stay tuned! and MINI will come first!
@@HBPowerwall I have absolutely no doubt that it would, I would like to see it if you do but would completely understand if you decide it is to much work. Thanks for your videos, I enjoy watching them :)
Do the mini! I want to see it
Will do..
I have a suggestion reviving does., Recover them one by one i a assure you that there will be some will be revive properly
I'll have to choose my next step - i don't think recovery is an option..
heya lol yes putting in the elektric cable will help.oke that much have bean a bummer
Give rich rebuilds a shout.
Heck yeah, check out David Visard! He builds racing mini engines, he has a load of experience building mini engines, the mini heads need porting and a scatter pattern cam with a good valve job multiple angle valve job, the valves are too small for the engine to make real power! Being a odd fire engine, with siamesed intake ports it needs the scatter pattern cam, also boring the lifter bored for larger lifters is a good upgrade, but. I don't think you are building a racing mini! But more power is better right!!
Fast road cam, 80' over, mild port job, bigger valves, double springs - all the basic stuff to keep it drivable but fun.
From what I've seen, second series of the battery is the one that seems to be draining all of the electricity... How about you just chopping, one by one, of the second series untill voltage stabilizes? either that or if you follow the hot spots on your thermal camera from minute 4:05 there might still be some salvation for this battery.
There is no salvation - she gone!
This is why i like life po4 batteries they dont get hurt as easy as li ions . I drained my life po4 to 0.02 v and they came good after puting a fully charged life po4 on the dead ones so my charger would switch on . They are only ment to be drained to 2v but i stuffed up with some and drained them to far . Not having a bms does that . I used my charger to balance charge them equally but they are all diffent in resistance but charge and dont get hot . They arnt perfect but not throw away though . The life po4 batteries im using are 38120 cells capable of 200amps short burst or 100 amps cont . Its sad that all those cells are junk . Can you replace all of them with your other cells using all the tesla parts and cooling to make a new power wall . Or is it all to hard to pull apart to put your cells in place of the tesla cells .
Yeh, LiFe batteries are the way foward...
the recommended low voltage cut off for lifepo4's is 2.5V and i personally would not go under 2.8V
Yes, FePO4 are a lot more robust but cheap ones less so. I once tried a "fix" for completely dead cells and actually got some working, turns out a small amount of heat does the trick. So does slow charging, like others have mentioned once they show reverse voltage ie -V where it should be +V then they are damaged beyond repair. Another method is charging just the weakest cell through the balance connector with a 4V 0.3A solar panel.
The tests you did show that these batteries cant be charged but I would still like to understand exactly why they did this or exactly why they were producing so much internal heat? Is it because plate separating layers broke down or could dendrites have formed when the cells completely discharged. I am some what puzzled with these results because many times over the years I have been asked to repair various cordless power tools powered with lithium ion cells which should be of lower quality then the cells in these batteries and in most of those power tools some of which were completely discharged for many years would come back if slowly charged and in some cases, they needed a higher current booster charge to initiate the charging process but then they would fully recover. Its puzzling to me that cells that are apparently so advanced fail so miserably.
Actually the lower quality makes them tougher against this because what happens is they have a thicker separator and or are less compacted into the cylinder because they don't require 3200mah per cell they mostly hover around 2500mah. So what happens with these they are mutch more compacted and way thinner separator it's easier to perforated said membrane hence why they can fail easier based of dendrides 😊
I think if you were to break the packs apart and focus on Packs 1, 3, and 5, you may find that the majority are fine and there's only a few SD's. Obviously Pack 2 has a lot of SD's and I wouldn't even be bothered doing anything with that one. Packs 4 and 6 will be highly suspect.
So, if you were to do another test run, I would charge each pack individually "outside" of the housing (if you can, not sure how easy they are to dismantle) and then use the Flir to see which one are heating up. Test current would be about 1A/cell if you can manage it. That should make the heaters show up quickly and leak the heat into neighboring cells too fast.
I think I need to do more tests but not sure how much more I can milk from these batteries for content with out boring people
@@HBPowerwall Haha true. Well, you could pump them full of amps till they 💥 😜
I read somewhere your not supposed to use a bench top power supply with the Icharger is that correct cause your obviously doing it????
maybe it's to power it? not sure never heard of that
@@HBPowerwall Right on that is great to know because I have the exact same power supply as you.... Brand and all and what sucks is I spent $80 on a server power supply to power my icharger x8 ... So I spent $80 for nothing but that's OK it's still a nice power supply
Old 19v laptop charger, xbox charger, old car battery all work well
@@HBPowerwall Right on thank you very much for the info I am just about ready to start putting up my Powerball I have almost all the big tron stuff just got done finish testing my battery's they all Tested at 190 ah to 194
something positive out of all this:
you have found a weakness in the tesla packs, in that the bms does not shut down its own drain current when cells reach a certain voltage.
There is no 'save the cells' mode present.......bit of a design flaw I would think.
Good cells will last years or even decades if good quality, self discharge is so low in a good cell, that 5 years would not be a concern.
Pete could you not mark the really hot one via the fler, then try and disconnect those cell welds, then try and charge again?
They all look hot.. remember the Nickel plate skues the thermal reading..
@@HBPowerwall ok it must spread the heat to other cells, rather than tip the lot can you strip out some cells and try to charge them, or is it not worth it
I just don't think it's worth it
@@HBPowerwall are you kidding? How many cells is that? If you are declaring it dean then ripping it apart some more should come next. I would use a pair of flush cutters to remove the Nickle plate and once you have some single cells either make a small pack like 4s maybe and use a car charger that charges to 14.4 volts. I would want to see if they are all shot or what?
Just need to keep cycling it, in my experience this is what could save it. With the cooling, obviously.
Also, absolutely need to see a Mini video.
yes, you cycle it 5000 times, you might just have a slight chance
I don't think all the cycles in the world will help! But MINI VIDEO! lol
hi Pete .. glad you still HERE!!! please don't do it again.. life is short enough. ok . butt you have taught the community. it is not worth a light . time or money. to go there. .. please STAY SAFE AN WELL . looking forword to super cap. and kweld info.??? tone uk.
Just once more? Over charge and watch go thermal? and what kWeld info do you need? I don't even know who has the Community Spotwelder at the moment..
@@HBPowerwall you were going to do one on kweld with super cap.?? i did get one . and because of something you said.( nice an informative. ) i spoke with good friends who know more than i. and come up with..no caps.. butt use 4 gel type batts ( but 18650 in side ) as power supply but keep them close as in a cross. it seems to work well. no bms to restrict amps. also up the size of cable both in and out. all seems to do very well.
You've got a decent paperweight right there!.... On a happier note.... I'm thinking TESLA BATTERY RESIN OR GLASS COFFEE TABLE!!!
Ehmmm... Did you ever get to ask the provider of the battery if it was shipped from the US? If so, shouldn't you try a reverse polarity charge, you being in Austria and all? I mean, even playing the video backwards gives out half of a full charge 🙃
@@cameraman2505 THIS!!!! You’ve been charging it the wrong way
@@cameraman2505 BAHAHAHAH
Resin coffee table, that would be awesome..
I had a completely dead cell, and my power supply has both current and voltage limits. At first I set current limit to about 10 ma and the voltage fairly high, around 20 V. The cell started to slowly charge and was at voltage limit. I was watching the temp, At some point the voltage started dropping because of the current limit. I let it charge until the voltage reached cell rated voltage, and then started increasing current limit and dropped voltage down to right above rated voltage. I then let it charge at the normal rate while watching temp. The cell charged fully and has been working well since then. Of course this was only one cell.
That was the last video :)
I tot its gonna end like most Hollywood movies, heroes win and everyone happy. But arrghhhh, Pete anyway you could twist the plot to end better?
I could have lied and swapped in a good battery lol
Yep not good enough to sleep at night so a few cycles may define the dead ones a little better but a dismantle is in the future.
Yeh, I think dismantle is the only way to go at this point.. milk a few extra hours of watch time from this battery 😀
@@HBPowerwall You know we will watch it
lol
Well, there was hope. And definitely after seeing the heaters. I would dispose of the miniature nuclear plant before it decides to run away.
Meltdown
Sell it to Russia?
Mini, Mini, Mini!
YES, YES, Yes!
You should pull it apart and charge the cells individually I think you will be surprised at the results. Out of 444 cell on a tesla model S battery that was reading no voltage I have recovered 380 cells.
i think i'll try this!
stagmites few these cells are dead shorting the other ones out highly surprised this didn't explode
They vent not explode... ... ................then turn into rockets..
Again you need to get all the cells above 4 volts and it will stay, i actually ran into a cell like that last week, wouldn't hold a charge because it went to 0v and until I got it full charged to 4.2 it kept dropping back to 0 over a week. Now I fully charge it and checked yesterday and it still at 4.18
I think that is a lot of heat to get them over 4 volts this is a huge battery and went back to zero after only a few days.. I think it would be dangerous to continue
@@HBPowerwall You can lower the current, and until it gets over 55c you have nothing to worry about. In fact if you Google '18650 max temp' you will see 60-65c being acceptable... Also try disconnecting the PCB from the battery. That maybe the problem
that is the temp i can see from the outside, with water cooling in some shots under all the plastic etc cell time inside would be much higher than I can read with thermal camera i'd say
@@HBPowerwall lower your current until the heat is acceptable to you and wait days for it to get full charged. Not sure what the balance board is doing when the cells aren't balanced, you tried bypassing it?
Yea is it just me that's thinking why not fully charge it to at least the nominal voltage? If it's not holding a charge once you take it off the charger then why not turn on an inverter at that point and see if you can run a load for however long.
yes mini update please
DEAL!
Could you explain to me why the cells are getting hot even tho your not charging them and the pack has been sitting out all night? Cheers
Internal shorting within the batteries causing them to heat up. This is how thermal runaway occurs
@@HBPowerwall ah ok, so what does the battery cells short to?
Do they short internally and then burn out damaging the cell next to them and so on?
Can you reuse the tesla powerwall's BMS and inverter to work with your own battery pack from laptop cells?
I would like to try
some cells appear dead , as the voltage rise was significant on providing power , i guess one of these cells in series has gone bad.
heat looks even spread, id say they are all gone
@11:42 that is crazy, but at least you can stay warm by them. rofl
Once they start getting hot, I just over charge burn them out and recycle.
Won't be over charging these (unless I can do it safely lol )
@@HBPowerwall I have found old metal buckets work get for that, unless they get so hot they melt the bucket lol
I think if this many fully charged cells go thermal i'm in all sorts of trouble
@@HBPowerwall No doubt Hiroshima lmoao
@@HBPowerwall th-cam.com/video/WdDi1haA71Q/w-d-xo.html yes do not do it. They will go off and burn anything down in sight, and water will not stop it, it'll react more. And CO2 wont stop it.
Will you now rip it apart to salvage the good cells?
Won't be any good cells there but I think it's the next logical step
Now we should ask our selves, why is this battery dead? Did it discharge it purposely e.g. after a fault? I recovered hundreds to thousands dead cells from ebike packs. Some were at 0 Volts for years. Maybe the powerwall had a high amount of cycles. Is there any chance to read that out?
Thanks for these interesting videos anyway!
I think you'd need some Tesla Magic to get that info out - battery was ment to be used but it has clearly been installed - just don't know how long or why it was removed
If you tear it down, it might be a cool test to see how many of the individual cells are actually bad and how many were ok if any.
I'm leaning towards doing so more videos on trying to recover, I was thinking I was done but the community seem to need more and more information on 'how' bad it really is.
Is worth it to buy Tesla modules then make a power wall or is way cheaper to start scavenging used cells and testing them then use them to make the same set up ? I know I’m going to flamed for the is lol
Tongue in cheek - you must be a bugger for punishment ! Maintaining a mini and now a disabled Tesla powerwall. Factcheck - On Quora, a used car business owner was detailing the worst of the worst brands of used cars and he lumped Mini in with Landrover, Rover and Jaguar. Always buy 2 of them was his advice. You thinking of buying a second Powerwall ??
Anyway, good video. Always wanted to see what was in one of them
👍
Did you Try a freezer
oh! shocking! yes it is gone !! The first time I see zero volt cells not holding a charge at least two days !! Maybe it is because it spent so much time at zero vold. Most of the cells I recover from zero volt end up being good. (I discard about 11% of those) the ones I can keep loose only 0,1V or les IN A MONTH.
That settles it, i need a thermal camera.
Hard to find a better tool, useful for so many reasons.. Even entertains my grandchild for hours lol
Hey Pete! I would try one more time or at least revive to a level when you can put it back so the internal charger/bms can do it's thing. If it's still a no go then try isolate the heaters with quick high power charging(not my first choice for sure) or an esr meter or maybe a high(5.5/6.5) digit multimeter. Anyways a frankentesla powerwall with recycled cells would be funny 🤓😬
It's not that funny. That's what mine is and I'm really impressed by it.
Take your time and oil everything as you go back together and it should be fine.
Built 100's more concerned with end float and not having the right tool to check it.. lol
@@HBPowerwall I know that is right, that is what keeps me from even fooling with anything past 96. Need to much stuff to make them right, don't even get me started on flawed metal.
I've had many people get mad over me touching none of this new crap, can't get sum to understand, that some manufacturers use computers to turn stuff on and off through negative while others use positive. It is a royal pain since they done that mess, I miss points and distributors. rofl
That is funny how adding more ah on 3.7 volts can sustain anything, if I have learnt anything dealing with Li-po or Li-ion is they don't play fair when charging. lol
YEs to all the above!!!!!
Its a shame you can't push enough Amps into the pack in order to break the fuses on the heater cells
Cell level fusing doesn't break fuses in my experience - however it might trip the CID if the cell had one
Damn
Sums it up
the tesla preheat on cold batteries to 40c for fast charging btw
REALLY? - But cells would have been 60deg or hotter in my case hard to see under the nickel plate & the battery is now at zero volts again so might not help.
@@HBPowerwall sorry i put that comment b4 i watched ya video through. ya right its dud.
tesla preheats the battery for super charging. like 160kw. you need not heat it if above 0 C but the charging is much slower.
humm strip the pack down then possibly rebuild using the water cooling and chareger inside the tesla powerwall
I love this idea
doing a gas and a ev mini?
In time
keep trying, more amps, pulsing, whatever it takes, it must live! haha
I like your style , but you honestly think i can milk another video from this lol ?
@@HBPowerwall you could do a video to find out at what temperature the meltdown starts?
But of course that is not very wise thing to do!
I would charge it to about full and cycle a few times before even thinking of total loss.
@@HBPowerwall PASS THE MILK, or send it to me? i'll happily poke at it for a few months, i have lab power supplies, big BMS units and multi chargers.
also i think you gave up a little early, from my experience, the heat comes from the overcoming of the resistance of the low voltage in the cell, once it reaches 4V again, in theory, amperage should decrease, as the resistance is lower. (as long as the cells aren't like 200 deg, lol)
MINI MOTOR viewer ... for sure
NICE!