Explained for BEGINERS Lithium ion Battery not holding charge How to Diagnose and FIX

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[@Iwright81]

Finally a explanation a numpty like me understands. Good work mate

[@TheCrazyRomanian]

You are way above the average person , most people that watch my videos don't understand anything ..

[@minouminou2885]

@@TheCrazyRomanian can we rest one battery capacity with liitokala and chane the damaged one with a battery that same capacity ??

[@niacal4nia]

If cells are unbalanced. I connected some computer fans to discharge the higher cells to match the lower cells then charge the whole pack. A bms discharge bypass could solve the cut out however you need to monitor the LVC.

[@rhiantaylor3446]

Just as you can measure the voltage of individual blocks of 3 you can charge individual groups and I here would charge them to get the top bank to 3.94v each to match the lower bank. I would then put the battery on a shelf somewhere and wait a week and measure again. This will help work out if the low cells have a self-discharge problem or if they went flat because they have less capacity that the others which is terminal. The BMS will try to rebalance cells but, if you have not used the battery for a long while, self-discharge may have taken some cells so far out of balance the BMS can't fix things.Sometimes re-balancing all the cells to the same charged voltage will make the battery usable with improved range once more - for a while.

[@franklynnelson2285]

Ok. I understand that. But how do you do that? I bought a bike,and inherited a bad battery. 5 or 6 miles per charge,and that's it. How can that be fixed. I'm on a fixed income ,so I can't really afford a new battery.🤷🤷🤷

[@jimertzman6628]

good video. TY. Will you be making a video showing the actual battery replacement process?

[@richardwernst]

Very disappointing, advertised as "and FIX" and finally at the end, he says there really is no fix. Sheesh.

[@rontheoracle]

Thank you, god of batteries. This knowledge can save lives.

[@curtiswheeler2212]

You need to use eggs for examples and which one of the eggs is bad compared to the good ones, in Canada we learn about how batteries work and magnetism in Grade three science electronics are alright with me man.,PEACE!

[@rachidbaaira9869]

Hi, plz I have a question : can I run a Xiaomi (250 watt) with 36v hoverboard battery?? ( I make path just a 2km in day) , plz someone answer me. tnx

[@TheCrazyRomanian]

Depends how that controller works I can't say for sure

[@spikemcnock8310]

Hi. I have a lithium battery pack of 6 which puts out 7.2 volts, it charges but the charge doesn't last long only around 5 minutes,i have the same battery packs that last 20 minutes What would you suggest to do to get it back to a proper out put? Many thanks Spike.

[@IonelM]

That's quite a clear explanation! Congrats!

[@TheCrazyRomanian]

Thank you

[@serega4087]

@@TheCrazyRomanian how to test it under load with multi meter?

[@jaydux9733]

Thxs man for explain this but I tink u mixed it up at 2:22 whe u sed the battery is 3cells10pacs instead of 10s3P...

[@amansingh-ph7zz]

I can check individual cell in pack with the tester now

[@UniversalBabyKen144]

40 star 💫 VID 💥✔️🔥⚡️💯💯

[@OathKeeper1506]

So… are we just not gonna talk about that flash light sized sharpie marker? Lol That thing is huge!

[@garthbews4863]

use a hobby charger.no bms as charger balances every time,reads cells and uses larger BMS to even pack..mind you 48 volt not good product..36 volt or 24 volt great

[@dijanabrkic5167]

Is it safe open the battery like this and check it with a multimeter if its fully charged? As I noticed you said you need to discharge it. My ebike battery is fully charged but shows 0 voltage

[@MykeHawke-r9r]

Ty

[@chinthakasandamal8283]

Good work

[@noearias2006]

EXCELLENT VIDEO, THANK YOU FOR SHARING. 🇺🇸 IS ❤

[@danielvonbramserud4449]

King!

[@Seneslau07]

Do you consider problematic receiving new lithium ion cells at 3.44v? I received my new 21700 Samsung INR 40T3 4.000mA, 35A cells from well known european company NK.. with 3.44v. Is that too low? I've builded an 2.8 kw 24s8p battery for an electric paramotor and has a huge voltage drop at 10-17kw full throttle and it should handle it like other similar batteries. I'm trying to find out why. Thanks.

[@noobz5056]

3.4V charge per cell is too low for high output applications so it is normal for the voltage spike dipping too low.. Charge it up to at least 3.6V or greater per cell.

[@chefabrils5519]

Thanks a lot im a newbie about repair battery it can help for me this clear video Sir Hope next video the battery of Xiaomi mi365 how to diagnose it is the same process?

[@niacal4nia]

Some bypass the BMS output side but keep the BMS charging input. It would monitor the charge but not the discharge so you have to have a gauge to monitor the LVC yourself

[@TushhsuT]

nice way to blow out the battery, burn the house or whatever. Deeply discharged li-ion can grow a copper electrode or make a short cut because of dissolved copper ions in electrolite and blow up a single cell that is enough to start a chain reaction in neighbour cells. So it probably will work for a while, but then it can BOOM.

[@carlosspiceyweiner2993]

What's the quick fix?!

[@TheCrazyRomanian]

Replace cells

[@winstondavidson4754]

So maybe i missed the answer to my question, but if you can narrow it down to a single pack can i not just disable it for lack of a better term? And then have my battery working again even if at just 2/3 of the original potential?

[@TheCrazyRomanian]

No you can't disable it , also replacing is not a good idea because the packs need to be the same age and specs ...

[@rindo5291]

Very good explanation great video

[@Watch__This_]

on laptops if you change one cell the bms will cut the power and you have to reprogram it to fix the battery, in scooter doesent do that? you can change them with no problem?

[@TheCrazyRomanian]

Depends of the BMS but if you buy a laptop that is too smart then it might do that but usually the dumb stuff doesn't care and scooters have dumb BMSs

[@KenHarris-o2x]

My 48V ebike battery shows nothing on charge indicator on actual battery. When I connect battery to bike no power, when I connect wall charger to batter nothing just green light on wall charger indicator? Any suggestion to resolve this or is there a shop who works on these? I hate to toss battery as its only 2 yrs old with little run time very few hrs.

[@rod1cooper]

Not only does the BMS turn off the battery pack output if the batteries are out of balance, it also turns off the charging input so the battery will not take a charge. I had the same issue on a 48V pack. I did exactly what was shown here, measured the individual packs and found one that was very low. I charged the pack with a current limited bench power supply until the voltage was back in balance with the rest of the packs and the charger then started working again.

[@madanshah6596]

Please connection for bms 30 battery

[@janikenttala5670]

Does somebody know what IS wrong with My scooter battery. One cell is full 4.2v and every other is 3.6v. itse 42v battery

[@janikenttala5670]

And its says its full because one cell is full

[@minouminou2885]

I think the problem is the balancing in the bms system to discharge the 4.2v cell to 3.6 and looking at all the battery if it is the same problem. Change the bms system

[@buckyflex1]

Its not a REAL battery its just a clump of cells.

[@TheCrazyRomanian]

You are not a real person you are just a clump of cells

[@alienal8278]

If we know we have a problem why has it not been fixed

[@anandcp4927]

Good video sir, Thank you.. I have one query to ask you, i purchased some lithium ion battery that are measuring different voltages for example some of them 3.6V, 3.8 V and 4.0 can I mix all cells together in parallel connection?

[@TheCrazyRomanian]

They should be brought to the same voltage before connected together so you should either all charge them to the max or discharge them to bring them back to a level that is close in between

[@anandcp4927]

Thank you so much sir for your valuable feedback. It will help me a lot.. 🙏🙏🙏👍👍

[@tonystark341]

You need good electric knowledge to do this kind of operation or your batteries can burst in flame 🔥

[@noobz5056]

No it doesn't. Sorry, but no fire, no matter how badly you want it to burn.. Those fire catching battery videos are an organized crime by the high ranking elites around the world. They put something inside the battery pack to force the fire to scare the public cause they want you to stick with the heavily taxed gasoline to maximize profit. It's very evil....

[@w.w77]

What about a 52v samsung celled lipo battery thats not charging past 80%? Bad charger??🤔

[@TheCrazyRomanian]

Maybe bad BMS .. it reads wrong . How much power you got in it, This charger too as low as you can and then put it on a watt meter to charge and see how much power it can draw

[@w.w77]

@@TheCrazyRomanian changed the BMS and it didn't fully charge. Put the original one back on and it fully charged. I think its the charger. Don't have a watt meter

[@efdawahfan]

i need help i have a bms which had low batteries,i disconnected the bms and i charged them all up to 3.7 so they are all balanced the bms gives 48v at the charge connector and 1.6v at the power connector...is the bms dead ?? or does it need reset or something i dont have 52v charger.

[@mrtechie6810]

Reset. Connect a charger.

[@77777771955]

Excellent. Thanks.

[@biketothetop]

Nice video👍

[@TheCrazyRomanian]

I'm glad you liked it

[@bobravenscraft5376]

If you use average cells. They will fail. If you use a hobby charger you can stay ahead of the issue with bms DEAD IN WATER

[@gropot420]

No efix explained at all. No help.

[@TheCrazyRomanian]

A teacher doesn't explain to you how to fix things he gives you the knowledge to fix it yourself

[@SkateboarderPawan77]

Well explained😊

[@TheCrazyRomanian]

Thanks

[@gim8756]

thanks

[@Lai_n]

what happens if i remove the bms?

[@TheCrazyRomanian]

No more battery ..

[@Lai_n]

@@TheCrazyRomanian i thought if i removed it it would be fixed

[@niacal4nia]

Some bypass the BMS output side but keep the BMS charging input. It would monitor the charge but not the discharge so you have to have a gauge to monitor the LVC yourself

[@karenjones9435]

my battery is 37 volt battery. The actually volt is 34 charger wont kick on. Does this mean my battery needs replaced

[@TheCrazyRomanian]

You have dead cells in it

[@adamwilson4996]

How do u reset the bms

[@RobertAdams-ly5ku]

Disconnect it, then reconnect it

[@bobravenscraft5376]

Good batteries Run Naked

[@bobravenscraft5376]

Perfect example of Reason to NOT use bms

[@imho7250]

Nonsense. The BMS did its job.

[@orustusamunade8936]

Guess your house will burn down quickly with no BMS my friend 😂

[@hulkgqnissanpatrol6121]

It saved 29 cell's. Please explain your theory, I actually interested and not out looking to argue.

[@hulkgqnissanpatrol6121]

Another 🤡 on about ridiculous nonsense again it seems!

[@leopemberton5439]

How do you know how many volts are meant to be in each single battery when you test them .very helpful video thank you

[@xerejuneseve6333]

Difference between weak and strong one matters more.The cells voltages are from 3V to 4,2V at full charge.

[@ibreakkidslegs]

Can you just toss the bad cells and hook the remaining cells back together?