How to recover a cell on a lipo battery

How to recover a specific cell on a lipo battery. Do this at your own risk. Please be VERY CAREFUL with the polarities.

[@BisMaxx]

a most necessary video for Lipos on KZbin, thanks for the details and close-up. made all the difference!

[@Eden_M]

Even 7 years later, your video was great. Helpful and informative thank you!

[@tonyu2298]

this guy a lipo genius. worked great.

[@SAMYAHBENSHEMUEL]

Thanks Brotha, you just saved a brand new 4s battery I left plugged into a fpv camera system overnight.

[@lmontanez]

Sergio, Very good tutorial, you saved me 20 $ thanks buddy.

[@TheHandsOnGang561]

Much better video in general then the others. Thank you

[@LilianGudumac]

Best tutorial for battery recover ! I even recover 0 volts cell with iPhone charger :)

[@victortroska463]

i charge mi 5500mah 14.8v 35c from 0.0v using Nimh at 1.0v for about a minute each cell till i get to 3.5v each cell and now is working. thanks you very much.

[@smithmichael4737]

Victor Troska I do the same and no problems be there when you doing it

[@TerrorswellFPV]

Thank you for this excellent tutorial. You saved my brand new Turningy Lipo.

[@Juary70]

Glad to know. :) Best regards.

[@TheSkyPod]

Great explanation of which cells are which.

[@Juary70]

The Sky Pod Just go ahead and follow the wires. It's not that hard.

[@armenvegas]

just saved me 150 bucks. thanks

[@anmwolfrc159]

This video is very helpful thanks......HAVE A BLESS ONE

[@SonnetGomes]

This is an excellent tip. Thank you for making this instructional video.

[@Juary70]

Sonnet Gomes Thank you very much. Cheers.

[@Superfandangoo]

Thank you

[@nitro2037]

so one of my cells is dead..son got his quadcopter in a tree and it slowly drained the battery for 7 hours... one of the cells had 1 volt and the two others ahd 2.2 or so...but i went to jump it to life again the one cell went dead as i charged it..so its a gonner..the other two are ok i think..but my question is if i removed one cell of 3s 1500mah would it be a 2s 1000mah battery then..or still a 1500mah..

[@shankarrathod9914]

If u only get smoke you are lucky..haha...nice explanation sir

[@freespirit3152]

Awesome Advise excellent tutorial Saving $$$$$$$$$$$$$

[@mojowoykin]

thank you

[@rcairplanesvictor9866]

Very nice explanation!. Thanks a lot Sergio.

[@bencrawshaw1227]

Where do you get charging boards.

[@booshveg]

Sir , you are the sole savior of thousands and thousands of dead cells . all hail master Sergio

[@Juary70]

thank you. :)

[@B3RG3RS0N]

Hear! Hear!

[@EnglishTurbines]

Yes, good video, but the Lipo in your video is not what I would call imbalanced....?...Putting it on a normal charge would bring all 3 cells into line anyway. I get the bit where you are using a 1S setting though because it's effectively a dumb unmonitored charge rate. I have a big 3S Lipo and one cell wont go above 3.76Vs...So maybe I will try it your way, but I think this Lipo is done for.

[@ljpotential2ba1st]

sergio you are thorough and a good teacher so I pose a few questions if you are willing? I want to remove a cell from a 8s and make it a 7s safely to parallel with my other packs on my DIY e-bike can you help? I also wonder if packs of different capacity can be paralleled if I use a one way current blocking diode on the positive pole of the lesser capacity pack? ie. ESC 48-60v w 7s 5.8Ah & 5s 8Ah

[@Juary70]

lanell jackson 1st of all sorry for the late answer. Regarding you issue you can use different capacity packs in parallel but it's not advisable, unless you have an over-discharging protection circuit for every pack. As a whole, 2 different capacity packs will be discharged on a different rate, which means you can over-discharge the lesser capacity one. At least for my knowledge. Hope that helped. Best Regards

[@ljpotential2ba1st]

Thanks Sergio packs are to expensive to risk. Keep doing a great job because I appreciate you. Regards, Lanell

[@Juary70]

lanell jackson Thank you.

[@NOTHINGbutGOAT]

Can we revive without charge balancer

[@steveedwards3217]

my 5 cell onbo lipo has all black and one red lead i presume that is the equivalent of your black lead?

[@johnnygeejr500]

Thank you so much, it is very clear to me now ! cheers

[@XXTechMoXXNew]

My middle cell reads 0.00v I confermed this by opening up my battery and checking it manually and it reads 0.00 What do I do? I can only charge to a max of 8.--v. My quad needs 9 to 12

[@bhaibolte8052]

Bro, can we use 3s batteries if one cell is not working. My batteries is showing 8.4V. instead of 11.1. is it save to use it

[@justinhollingsworth3831]

Unfortunately this did not work for me. The bad cell I have is showing 1v. When I try to charge it, it just says low voltage. I even tried charging at .5

[@jackarsenault2216]

Great tip, saved me!

[@jstump1972]

I have 4 black wires and 1 red do I assume red on red and black on black in my 4s lipo?

[@fpvdreams8190]

Doing this method with 2 of the cells on my 3 cell lipo. I’m unclear on the wire position in the middle or 2nd cell. Does it also need the negative lead to go to negative ?

[@yannmasoch]

Thank you for this very useful video Sergio! My "dead" cell is about 0V, do you think I can use your method in this case?

[@Juary70]

Thank you for your comment. When a cell reaches that low voltage, usually it's beyond the point of recovery but you can always try. Charge it to the same voltage as the others and make some charge/discharge cycles to the entire pack to see if it holds up. Even if it holds the voltage you need to stress test it to see if it doesn't goes flat when in working conditions. Best of luck.

[@yannmasoch]

Sergio Pereira Thanks for your answer. I'll try it this week and I'll share the result.

[@yannmasoch]

+Sergio Pereira so, finally my wrong cell was dead - it doesn't go over 3.7V, it doesn't hold the charge and it starts to be hot when charging. That too bad in my case, but your tip is great and very useful for a beginner like me. Thank again for this video!!

[@Juary70]

+Yann Masoch Sorry to hear that. Thanks for your comments.

[@thercadventurer4422]

What if you do this and you get the low cell up to 4.20v but then you take it off the charger test it again and that cell says 4.10v or 4.09v and the other is staying at 4.19-4.20v does this mean the cell is bad?

[@madforit9661]

Hi I have a new 3 cell 11.1 volt lipo Only used a few times For some reason it is reading 0 on my charger and each time it fails and the charger will not charge it There is no bulging of the battery So how can i use my charger if it always reads with a low error and stops the charge

[@harvejk.6406]

thank you for the tip. you saved me 50$ :)

[@Juary70]

Hrvoje Kolarovic Glad to know. Thanks

[@AlexisPaques]

+Hrvoje Kolarovic If you had to recover a dead battery, do not forget the battery HAS BEEN damaged anyway ! Keep in mind that this one is more "dangerous" than others

[@Juary70]

+Alexis Paques you're talking about the battery right? If you are that is correct. If a cell goes that low, it's chemestry will be afected. Then again I've been working with LIPO's for more than 10 years now and never had a accident with them. As long you're carefull you should be ok.

[@ananyamore8746]

*So they will make a truck... That's good. For some time now I've been figuring "If Tesla really wants to make money, they'll make a viable ( **lovy.biz/44oi** )1/2-ton LUV fleet-truck.". And they plan to make Class-8 semi-tractors & buses as well? Makes me look forward to the first luxury EV motor-home, built with fixed roof-top & retractable solar panels, all powering the EM-induction cook-top, water-heater & washer/clothes-dryer. Add a water collection system with reverse-osmosis treatment & UV-sterilizing, and you'll be set to survive anywhere, anytime!*

[@lakufoekdm4237]

Thank you, very-very much...(obrigado) . 👍👏🏼🇹🇱

[@peterbrady2165]

Why didnt you try a cell with 0 volts.

[@FIRST-x4h]

I have a 4s battery and the first cell says 0.0 volts.. while the others are at 4.0 volts. Do you think it still can be saved?

[@Juary70]

Sorry for the late answer. Probably not. When a cell goes that low the chemistry of that cell goes past the point of recovery.

[@rolo9570]

Im trying to save a lip battery using this method. First cell doe snot charge more than 3.94, any suggestion???

[@Juary70]

If the cell doesn't charge beyond that point, it means the cell went bad past the point of recovery. Sorry mate.

[@rolo9570]

Sergio Pereira Im still working on it ... I charged 1 by 1 , so far I got 1st /4.20 2nd/4.18 3rd/4.18. I just started balancing ....

[@rolo9570]

Sergio Pereira I really want to recover this battery because it looks like new, it is not puffed up or anything like that ....

[@Juary70]

Nic Holas That's a good sign. Next thing you should do is discharge them to storage voltage. 3.8v per cell. After that balance charge them to see if they go up equally. Best of luck.

[@ervinwee7063]

I have a 3 cell LiPo battery that shows 2.4 3.7 3.7 (voltage respectively) I went to the shop to test it out and they said i cant use the battery anymore Is the cell (2.4) to low to do anything to recover it?

[@Juary70]

Ervin Wee Hi. You may try charging the battery as a NIMH till it reaches 9V or so. At that point the cell that appears with 2.4V should be higher and you can then try and charge it using this method to match the others. Once you do that you can balance charge the entire pack.

[@ervinwee7063]

If i tried charging the entire battery as NIMH will the voltages of the other two 3.7V cells also increase? Will there be a risk of overcharging the 2 working cells?

[@Juary70]

Ervin Wee Not really. As long the pack voltage won't exceed 9.5V you'll be fine.

[@ervinwee7063]

Alright thanks for your help!!

[@captainart3000]

It works :)

[@Juary70]

captainart3000 Glad to know :)

[@auxpower13]

How did you manage to make a VIDEO where most of the important parts are not visible?

[@Juary70]

Are you blind, sir? If you didn't understand the video, I'm sad to inform you that this video is not for you.

[@johnnygeejr500]

shane try again slowly !

[@Phrancis5]

So is a puffy cell safe to attempt this?

[@Juary70]

NO. Puffy cells have past the point of recovery.

[@Phrancis5]

Ok thanks. Guess I'll be finding a recycler for this toxic brick...

[@Sam-gr8pl]

Thank you in 2024:-)

[@xiongproductions7445]

i accidentally reverse the polarity, RIP my left index finger :(