Revive a Dead 18650 Works For All Types Of Li ion Battery Cells
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- Опубліковано 22 кві 2023
- If you're an avid user of electronic devices, chances are you've encountered a dead 18650 battery at some point. But before you throw it away, why not try to revive it? In this video, we'll share some tips and tricks on how to bring your dead 18650 battery back to life.
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A cell showing less than 2.5v can often be brought back to life by passing a small current of 50 to 100ma until it reaches 2.5v, at which point normal charging can resume. By following this video a high and uncontrolled current will flow which is likely to reduce the future life of both cells. Do it properly or don't do it at all.
so just a standard power adaptor limited to 100ma? what i dont get is why the stuff in the video even works. why does current flow from - to minus...
@@wtfvids3472 A fully charged lithium 18650 will normally sit at 4.2 volts. A near dead cell at less than 2.5 volts, so there is a 1.7 volt or greater difference in voltage that will drive current from the good to the dead cell. Power tool cells might have internal resistance of 20 milliohms so a current of 1.7/0.02 or 85 amps could flow even though few cells are rated for more than 30 amps peak output current. A charging current will flow but both cells will likely see reduced performance from the heat caused by the excessive current.
@@wtfvids3472 The same exact way you jump start a car, but you just need to do it super slowly with Lithium chemistry. I don't recommend this unless you plan to baby that dead cell forever. The internal resistance has gone up, the capacity has been damage. Mark it and don't charge it when you are not present. Videos of Li-ions with thermal run away should strike more fear into people. This might be OK for low amp applications with cheap flashlights or something. But the cell is not reliable already at that low of a voltage. Saving $4-5 is not worth burning down your home.
The pen type tester you are using where can I get it to buy and the cost
I Appreciate This Video, And The AMPLE Warnings You Give.
I'm Not Certain Why So Many People Seem To Be Giving You A Hard Time... It's Like Safety Has Become Priority To Living Life These Days. Keep Building!
watch videos of e-bikes and cars burning up. Damaged Non-protected cells should not be messed with if you don't know what you are doing.
@DTrizzy there is always a risk
Who don’t want to risk just throw it away in recycle ♻️ bin
@@donmarkon Or save them for spot welding tests. Assume people are stupid and not listen to warnings.
While doing this will the healthy charger go down in voltage and the unhealthy battery go up
It worked.. Thank you man
You're welcome!
I do not advise doing this at all. Once a cell has failed, this means either the chemistry has altered or there has been a breakdown inside. Charging a faulty cell from such a depleted state of charge could be dangerous. Even more dangerous when you actually use it due to the heat build up created by the current draw.
Wow. Didn't think of this.
I had a cheap Chinese lamp running on this 18650 battery that won't charge. The problem is, I later figured, the cheap Chinese stuff doesn't have proper charge control and lets the battery discharge too much too often.
No matter what I did, i couldn't get a blue charging LED on!
After your clip, i got an idea, dismantled an old laptop battery (got the best out of 6 18650`s in there) and solved the problem with the lamp.
Thanks man!
Thanks a bunch, I had two Li ion batteries that wouldnt work and I knew that the batteries were charged. I didnt put the wires for 30 secs just like 5 secs and now they are back to life.
Glad to hear :)
This is a good way of doing it. But if you have two good working batteries. I find also just putting the positive to the positive with one battery in the negative with the negative of the other battery. And making like a little battery sandwich seems to work too. Of course is depending on how badly the battery is damaged
What dude? You literally described both parallel and series right there. You want to give people advice about messing with batteries that are risky to mess with, try to give good advice and word it clearly. For all you know some little kid will read your comment and think he knows what you said and burn himself or inhale some toxic smoke and even possibly burn part of his home. So what do you mean? Parallel or series?
@@simonlinser8286 Life is a risk. Playing with batteries at all like this is a risk. Especially lithium ion ones. I'm not responsible for some kid playing with batteries without supervision of parents. It's pretty obvious anytime you're doing stuff like this it's at your own risk. And if you don't have the mental faculties to understand that. Then you need to be already under supervision. Either by a parent Or a health care professional. What this video is meant to do is simply to help people. How many batteries say they're bad when they're not really bad. Let's stop the waste, too many batteries in landfills. Let's do renewable energy, re chargeable batteries, and get as many uses as we can out of them. Plus you want to talk about dangerous batteries to kids. Go check out a button battery being eaten by a small child. Now those batteries are a danger to children. Small, very easily swallowed, and once they hit your system they start to fry you.
Paralleling a low voltage cell with a good cell is exactly the wrong way to do it.
Does this operate on the concept that if you're using a voltage sensing charger unit, add some voltage to the battery in order for the charger to pick it up and charge it.
Is that all this is?
Nicely explained so it's simple.
What will be the capacity of a battery like this...will it remain the same or reduce by what about?
@shriddle_31 it depends on many factors
You should test it’s resting voltage and if that is ok later capacity
I put my batteries in the charger and they would not charge. The red light was flashing after about 30 seconds. I have an older charger that I bought years ago and i tried them in that one and they charged normally.
holy shit,...this worked
Hello mate. I have question to you. Lets say battery its 2400 mah 95w 3 amp. When you back to life how it will perform to original specs? Are will be similar or maybe 30 40 percent below original? What do you think? I have around 20 cells and I was thinking to recycle them but if I can back to life and they hold charge I will make one big power bank. Tnx
Proper testing is needed, you never know what amount of degradation will happen
I have powerwall and for every battery there is the process how i test it to see if its fit for use.
Charge the battery with a charger and leave it for some time, if its not losing voltage bellow 4.15v it is in good health
100% working - tested with Nitecore battery
Just had to charge my nephew's scooter battery with my lab-bench power supply. Each 18650 cell was down to 0.7 volts. It's sitting out in the press now charged up to 35.5 volts.. I hope it holds it's charge when I check in the morning.. (it's a 36v 10.4A 30 cell battery pack)
It's never been low before so fingers crossed.👍🇮🇪
What happened?
thankyou,. Maybe also try charging at lower voltages with an adjustable voltage regulator say 1v then 2v.
Great option if you have
@@donmarkon ok, and there are some inexpensive grid power plug in ones on eBay, with adjustable voltage , up to 24v, if the voltage does not go down to say 1v, a power diode or two can be used to reduce it before the load, here a battery
@@donmarkon Oh, I forgot to mention that a power resistor can be used to limit the charging current. You probably know much of this, but it's also a general comment for anyone to consider if they are willing. If the charging voltage is 3.8v , and say the charging current is 1A, the resistor should be R = V / A = 3.8v / 1A = 3.8 ohms , I guess 4 ohms will do. The current will be reduced as the battery is charged and it's voltage increases, and so this won't be a constant current circuit, but better than nothing, and a start at some better circuit. Power wasted in the resistor is P = A^2 R = about (1^2)(4) = 4w. The resistor(s) need to be rated at 4w or higher.
Hey bro i really need you. I paid $20 for my pair. So first question: will the revived battery have the same capacity? And 2nd: Can i use copper wire to revive or should it bee a special one? Please respond
The longer it stays discharged the more damaged it gets
Yes you can use cooper wire
Can I get a link to Aliexpress for a similar voltage reader model you're using in this video? I really like its compact feature.
Here s.click.aliexpress.com/e/_DeDipPR
is it possible to rebump the dead battery with the zero voltage, hope you notice my question and answer it may help me a lot thanks
You need to do this
ua-cam.com/video/oAdpzU6w3mE/v-deo.html
I like your multimeter where did you get it?
It is Parkside from Lidl
Gonna do a review of it at some point
Hi there, can do this with my hybrid
Battery to bring it back to life?
I ment my car hybrid Batteries.
Thanks
lol
i had revive 5 batteries AA rechargeable with this method...it works on me
Glad it helped 🥰
after charged i can see in your video that dead battery volt is going down..if that going down after few minutes or maybe few second it will same volt as like the begin...
The whole point is to bump voltage high enough so you can start charging it with charger.
Slow charge to full then leave it to rest for one day
After that slowly discharge and fully charge again. Leave to rest for a week - recheck voltage if stable above 4.15 it is keeper
The carpate is a nice region. My father had the same accent. V’s are not W’s. ❤. Слава Украини. Love the video. Nice work well made. Bravo.
Are we forgetting about how rapidly it was discharging after he tested it with the multimeter. Yeah it might be able to jump start the battery, but it'll probably never HOLD charge again. Kind of like the batteries in your PS4 controller. Once those batteries go yeah they might actually take a charge and you can use the controller while it's plugged in; but as soon as you remove it from a charging source and simply leave it there for a few hours it's completely dead even though it hasn't been used. I'd get that 18 650 batteries are expensive, but once they fail they fail. It's pretty simple. Just buy from a reputable company and if it fails before it's listed charge cycle, typically the company will replace it instead of having people do dangerous shit like this 🤦
You are pumping a story in your head too much
There is difference when battery is dead because it reached end of cycle and and when it is just got discharged
There are too much factors in play
The point is it can help there is zero risk involved if doing how I explained
@@donmarkon Maybe it is you that do not understand what happens to battery's when they are discharged ?
A battery can die in many ways, one is due to reached end of charging cycles, another is due to high internal resistant, yet another is due to high self-discharge.
The two last ones can happen way before the battery had reached end of charging cycles, and they make the battery unusable in some applications, high power and keeping the charge for an acceptable amount of time are in play here. This is called degrading and is often due to mishandling of the battery, as like storing the battery with to much charge, or store it with a to low charge. Too high or too low temperature during use/storage is also a degrading factor.
One more condition can occur with battery's that is unwanted and that is their efficiency, that is the fact that you need more and more energy (Wh) to fully charge the battery, and you get less and less energy out of them, example is that you put 105% of the battery stated capacity into it when it is new and you get 98% of the battery stated capacity out of the battery, as it get older you will end up having to charge it with 2-300% of the battery stated capacity into it, and you may get 5-20% out, that may end up being a very expensive battery to use, electricity is not free.
Just because you have revive a battery to an apparently working condition do not mean that it is a good battery you've got out of your efforts, sorry.
But in some cases it can be worth to revive battery's, but it is only a short time solution.
I have made a lot of money on rebuilding laptop battery's, not because it is a good idea from a economical point of view, but because my boss told me to do so because he was thinking that it was clever to try to get all capacity out of battery packs by "repairing" them. It was a waste of time to try to do so, to many battery packs died again shortly after the repair and the users was pissed. You can repack a battery pack with brand new cells, that gives sense, but trying to revive battery's are senseless.
I have power wall with 18650 with nearly 1000 of them
All salvaged from Bosch packs
I think I have enough of real world experience not behind keyboard theory :)
@@donmarkon Yes you have real world experience of salvage nearly 1000 18650 cells from Bosch packs, and you made a power wall, that is a good achievement, but it do not give you an understanding about what happens when 18650 cells degrade and the many ways they can do so. When looking at your other videos about salvaging/using/reviving 18650 it is clear that you do not know and/or understand this, sorry, but you are not alone most laymen and some professionals have the same ignorance regarding this, they often think that because they had made a dead battery into an apparently working battery then that had manage to make it as good as new or something close to that, when a n discharge way below its recommended level it is permanently degraded, how much is a open question, but damaged it is and nothing in this world can recover it. You can use a recovered battery for some applications, but as a drop-in replacement for a new battery, no. You can make a working powerwall, but it will not be as efficient as if it was made with new cells, the same goes for th capacity it will be lower than if made from same spec new battery's, the useful service life of the powerwall is a open question, it will not be the same as if it was made with new cells. A bit of real world experience often give people some knowledge that make them believe they know a lot, but as a professional in electronics I had often had to deal with laymen and amatures that think that are so clever and smart with strange theory that are way out of reality, I am not saying that you are there, but you are about to get close.
Looking forward to the video about your power wall build.
@@K2teknik.blah blah blah. Be quiet dude, u have no data to backup your opinion or data to refute his. Go cry on another post.
How to prevent this and preserve a 18650 for a long time without using it? It`s enough to charge it once every 6 months, and store it in dry and room temperature? Thank you !!
buy a good battery
If u dont uave wires. U could use metal butter knives as well.
Indeed
That is a good tip
Just be careful
I used to do this to revive dead battery bt sme battery thy live bt if we put after charging the power in it will be gone without using it
If battery doesn’t hold a charge it is for trash 🗑️
I tried to do this but when I put it in the charger it seamed to be charging however the voltage was going down🤔
Sadly you can just throw away that battery
I tried it on my lithium drill battery and it gave the battery some juice and the drill is running fine with it but it won't charge the charger just leave a green light that it's not charging
Maybe BMS is bad did you check it?
@@donmarkon
What is the bms ?
@@arabgamesandtech2272battery management system
Fixed my Xbox batteries 🎉
Doing this for 15sec it.bump to 4v but it goes down super fast, even my liito doesnt detect,.I guess they dead for sure?
That cell is dead, or CID is activated check that
Dead shorting them can be unsafe and generates heat. It's an unnecessary risk. I put a 100 ohm resistor in series (Can use smaller value down to about 30 ohm but may need to be higher wattage rating if you go below 50ohm. 100 ohm was just what I happened to have.) Neither battery gets hot and the dead cell, if it can be revived, comes up to a power lever recognized by my 18650 charger in about two hours. 18650 cells have an interesting chemistry if you're used to lead acid. They gain almost all of their voltage very quickly, and then have to sit near full charge for several hours on the 18650 charger to go from 3.6v to 4.2v. I check them again the next day and, if they're still holding charge, I use them. I should run loaded discharge testing but I'm just not that sophisticated.
He wasn't dead shorting them, he was parallelling them.
@@garrett69 If one of the batteries is at or near 0v the current on initial connection, if not regulated, is near enough to being a dead short for there to be no practical difference between paralleling batteries and a dead short. That's why the batteries get extremely hot. At least they do unless internal cell resistance is extremely high. And if internal cell resistance is that high the battery isn't salvageable anyway. I stand by my statement. It also bears mentioning that 18650 cells have a maximum rated current, which this method will exceed substantially. The main reason this youtuber can do it is because, I suspect, he's demoing it using the same broken down power tool battery pack cells that he used to build his power wall. Power tool 18650s have a very high current rating. Most 18650s don't. Whether this method is a major fire and explosion hazard depends a lot not only on the condition of the batteries but on their current rating. Low current rating is going to be a greater risk. Power tool batteries have a current rating of around 20A. Tesla 18650 cells are about 5A and the random 18650s people have laying around are 1-3 depending on where they came from.
The battery needs to be load tested, more than likely this will achieve nothing.
The battery was drained fully and chargers will not charge a completely flat battery.
I would be very wary of any second hand lithium ion battery and never ever charge one as I like life, my family and my house.
These batteries are like bombs!
You have been warned!
Yeah this is the exact wrong way to do it. Exact definition of why we don't parallel cells at different voltages.
Holy shit you sent a low voltage cell from 0.87V to 2.87V
Insanely dangerous.
Edit: And then you throw it on the charger at 1000mA....Dude you are going to burn someone's house down with this video.
🤡
@@ericklein5097 What's Funny Is... Every Time I See Someone Raving On A Video "You're Dangerous" I Can Think Of NO Examples Of People Burning Their Homes Down With 18650's... But Electric Cars On The Other Hand.
Starfirereborn,
While you Can do this, it is probably the Worst way to do it. You NEVER want to take a dead lith cell and then pair it with a FULL Cell. In the very least, that cell used to jump start should have been reasonably discharged first. Or you could use a resistor to limit the speed of the transfer.
Just Surging a battery like this is again The Worst Way Possible to do it - even on the cheap. That’s what people are criticizing, it’s not just because he used a battery.
As someone who builds battery packs - I think I would know. But if you want to go on defending stupidity, go right ahead. Lol
The narrative of this content is rich with inspiration. A book with related themes deeply influenced my life. "A Life Unplugged: Reclaiming Reality in a Digital Age" by Theodore Blaze
I tried doing it but it didn't work
Further otpion are fire hazard
Really? Pumping whatever juice the good battery has into the "dead" one, seems like the worst possible idea to me and I am sure many people will agree. I actually wonder, why there is nobody screaming down in the comments. Using a power supply with setting for max current and voltage to do this is the "right" way, if there is any. You can't just put the batteries in parallel, it gives a totally uncontrolled current flow from the good battery into the "dead" one. In your example the "dead" battery even got warm after a few seconds, this is already a sign, that it's way to much power. You risk having problems with the "dead" AND with the good battery. You can do, like you have shown, but only with very short pulses, not 10-20 seconds long and only if you put some resistance in between, some long wire, a light bulb or a proper resistor. Using a medium charged battery also is more safe than using a 100% charged one. I hope you be safe and the people watching this as well.
What's worse is that the overall issue with very dead batteries is dendrite formation and that tends to be worse at higher voltages and amperages the best possible way to charge one of these is to have a continuous charger with very very low amperage and not a 18650 charger just voltage and low amperage to get the battery out of the danger zone anything under 2.5 I think the problem is under that voltage I think the cathode dissolves into the solution that's what's so dangerous. As you are increasing the voltage it comes out of solution and forms tendrils that are needle-like on the anode that pierce the laminate in between the anode and cathode causing a short. Best thing you can do is charge it so slowly that the formation of dendrites is minimal
@@Emmanuel-bw1wmthis is the information i was looking for. I drained a 60v battery to 3v and I’m nervous about recharging it. I want to forsure have lithium battery rated fire extinguisher ready smoke detectors fiberglass blanket to smother it. If it does charge i want to discharge and recharge to find capacity and it its under 80% of what it was before I’ll definitely have to recycle it battery ewaste.
@@Emmanuel-bw1wmRemember that in order for current to flow into the battery, the voltage applied must be at least greater than the battery.
@@EVO1087RI expect you will find most of the cells are unusable, unless there is a monitor circuit that disconnected the output. In that case, it might suffice to replace the weak cells but it's quite unlikely balance can be restored to satisfy the battery monitor.
הה⁰⁰
1 heure a regardé la batterie 😅
Xtar battery charger have this capability to revive dead batteries.
Which model?
looked like you did a trick and swapped the dead battery at 2.49
Why would i do that ?
What you do is nuts! Don't do this people! You are risking your life! 18650 batteries can be deadly. There is a reason there are safety measures in the design of 18550 batteries... I wonder does he have any idea he is risking people lives... If you are not professional engineer don't try to teach please!
I have power wall with 18650 with nearly 1000 of them
All salvaged from Bosch packs
I think I have enough of real world experience not behind keyboard theory :)
There is always a risk but not nuclear bomb magnitude
Always take care and go safe!
@@donmarkon Powerwall from incapacitated battery Really! You are more crazy than I thought at least write a warning about "do this at your will... this is dangerous!" at the start of video otherwise someone might get hurt. I really would like to see those powerwall you are talking about.
@@the-matrix-has-you It is 7s 24v modular design
Did you ever do a repair of lets say electric scooter battery? Do you realise how much time battery gets discharged too much (even it its a good battery) but BMS faulth
All of those batteryies are usually good but to charge them you need a charger like Litokalla 600 or manual way like i did show in the video so other chargers can properlly charge them.
I understand your risk concerns but magnitude is just to big
Story in general has too much layers to define it in one way
@@donmarkon yes I know batteries all type of them have over 20 years of professional experience. I have electronic engineer and electromechanical engineer diploma so yes I know more than you do about them and what you do is dangerous! Beware! When the pressure inside the battery rises, the gasket squeezes upward and deforms allowing the spike to penetrate the puncture film, thereby preventing the battery casing from bursting! In other words you are disabling the safety feature! during operation, especially under extreme conditions like your powerwall. Due to the continuously increasing pressure inside a battery, the safety vent was developed for this! allowing excessive gases to escape so you can understand that that battery is no longer safe to use! but you are disabling that safety feature! Which is not a logical at all!
@@the-matrix-has-you I doubt in your expirience and the factor that your argument is that you have diploma which dosent have touching point with battery development in the past 10 years tell me a lot. Everything you wrote is something which you can find on the internet by googling for 5 minutes
The video is related to bumping up battery voltage so it can be charged.
Giving arguments and calling up yourself a expert with diploma..
I'm electritian but i never mentioned it, i share my expirience and by comments from this video it helped to a lot of people.
And as i told in the video there is always some kind of risk... Like with everything in life, you can sit in the car and die today.
All thinks will die sometime. The batteries too. So even you manage to charge a dead battery the discharge time is very quick and you have nothing to gain of this except of wasting time in useless and maybe dangerous activities.
I agree with you
I only do this when battery is over discharged by faulty battery management system aka BMS
I know that battery was good but it got over discharged
it killed other battery too.
There is always a risk... I recovered many batteries like this and never happened to kill healthy battery.
It is always better when connect healthy to dead battery to do multiple times but shorter intervals than one long!
@@donmarkon Maybe you know this, but you didn't mention it in the video so I'll tell you in case you don't. 18650 cells made in China may not have any safety features. That's why they sometimes catch fire and explode. But cells made elsewhere, especially cells used in tool battery packs and US made EVs, except tesla, have two safety features that I know of (PTC and CID.) The PTC is a resetable internal fuse that breaks the circuit if two much current/amps flows all at once. If the power going out of the battery exceeds the amp rating of that fuse/PTC the fuse interrupts and the battery will read dead unless/until it self-resets, though note that multiple trips cause PTC failure and eventually make the battery more likely to explode in over-current situations.
If you try to parallel PTC protected batteries like shown in this video both batteries will usually trip the PTC. Easy fix is to use a resistor in series with either positive or negative side to make sure current stays below the rated charging voltage of the cell. It takes longer but is safe to do. I use 100 ohm resistor because that is what I had, but I think a lower resistor would also work, just look at the cell data sheet to get charging rate and then calculate the resistor needed to limit charge rate to half of what the data sheet specifies using e=i*r where e is the voltage of the charged cell and i is the half the charging current. If you get close to the max charging current you will need a resistor bigger that the standard 1/4 watt to dissipate all the heat and not fry the resistor.
Edit: Got PTC and CID confused. PTC is the resetting one. If CID goes then battery is useless unless some unsafe reset methods are used, and then it may work but is a lot more likely to explode.
Edit 2: Learned that Tesla actually strips safety protections out of all the cells in their packs and relies on foam instead, which won't work if the cell is dismantled.
This NOT going to recover a *really* dead cell ie one that has been either kept at 0V for too long, let alone one that has been subjected to a reversed polarity. So your video title is misleading. It should read something like "How to permit a badly discharge cell to charge normally" or something similar.