Xiaomi M365 Battery Issues - Diagnose And Repair

In this video I’ll show you - how to diagnose and repair Xiaomi M365 electric scooter faulty battery.
Found bad BMS - replaced with new one.
Found 9 dead LG LGGBM261865 cells - replaced with Panasonic NCR18650PF
For this repair I used equipment and products:
Xiaomi M365 BMS - shorturl.at/awCF0
Panasonic NCR18650PF 18650 cells - goo.gl/S75c3s
Imax B6 AC v2 charger - shorturl.at/cQWX9
Malectrics spot welder - malectrics.eu/
You could support me and my content creation by buying Well Done Tips official outfit: teespring.com/...
Due to factors beyond the control of WellDoneTips, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. WellDoneTips assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. WellDoneTips recommends safe practices when working with the tools or equipment seen or implied in this video. Due to factors beyond the control of WellDoneTips, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not WellDoneTips.

[@amazingmotivation1344]

This video really helps a lot. My scoot recently stop working and I brought it to the service center. The service center informed me that my scooter's warranty is voided due to liquid damage and was charging me for control board and battery replacement costing at around 250usd which is too expensive. After watching this I tried to diagnose the parts by myself and It was just only a bms error. I just reset the bms and it works. Thank you for sharing your knowledge

[@kevinsellsit5584]

You should name the specific service center and its location so they can have pride in the fact they are ripping people off. (Assuming you thoroughly tested the scooter and this was the only issue).

[@amazingmotivation1344]

@@kevinsellsit5584 I bought my scoot at technigent in Makati. Hinatid ko sa technigent mismo ung scoot na pinick up Ng "service center" which is grimalkin corp. Located along Quezon city. I still have our conversation (with the Xiaomi representative) via Viber 😉

[@amazingmotivation1344]

@@kevinsellsit5584 I bought my scooter at technigent in Makati Philippines. When it start to have problems I brought it to where I bought it and the service center pick it up which is grimalkin corp. Located in Quezon city Philippines.

[@dorilyngalicia180]

@@amazingmotivation1344 same prob din po sakin, bought it from shopee and I contacted the seller, sabi po nila i ship to manila at ipa service center nila (cebu po ako). Nagbayad lang po ako ng 800 for battery reactivation fee. Akin na din po yung SF. Skl keke

[@jirij391]

@@kevinsellsit5584 qq

[@N0N0111]

He makes it look so easy haha. He has so much knowledge and soldering skills and spotweldding and more needed equipment.

[@lancelotkillz]

Perfect video left nothing out. Extremely detailed and thorough explanation

[@hauikanamu9641]

Best video so far from someone who understands battery technology

[@3th3r10n]

This was the most informative video that I've found on the matter, thanks!

[@benji376]

Very high quality video. I really appreciate you speaking in English!

[@Mattle_lutra]

Yeah, he might have an accent but he's very easy to understand. :D

[@kentcyclist]

Matias Langaard You’re kidding he’s rubbish at English

[@Balldropper]

@@kentcyclist What part of the video did you have trouble understanding?

[@iwoo_3269]

Cult Watch then your literally deaf

[@joycecooijman1878]

,yj

[@maestrovso]

A very well made diagnostic video. Not many will put the time and effort into one. Thanks

[@ovi_4]

If you really want to fix anything you really need to spend time money and effort. Otherwise...forget it. When it comes to get anything repaired nothing is easy.

[@ciprianbeniuga5042]

Great Video and Good explication about troubleshooting a faulty battery . You can get the rest off the cells unbalanced gest beacouse it’s impossible to perfectly match used cells with new cells . But you can grab out a good cell and make a discharge test and see how many mAh you can get and after that you can put new ones or used ones as close in capacity possible .

[@vince_toth]

Best tutorial on youtube fr

[@svensporleder810]

Danke für die sehr gute Hilfe bei meiner Roller-Reparatur 💪👍

[@metatechnologist]

Good job on the spot welding, I was wondering if you would do that! It's difficult for me to suggest to anyone to attempt to solder these batteries. Too much heat is required and the solder is quite prone to mechanical failure. Really pro video. What would the final repair bill for a customer bringing this scooter in the shop??

[@pashko90]

He bought it.

[@Hermzkiii]

This tutorial is very accurate 🥰 my battery same there is 3 dead , it needs to replace new battery ❤️ thanks for the video

[@adamlonvideos4078]

Thanks, you helped me with that bsm modul reset button! Baterry showed on output 16v, but on the cells (before the bsm modul) showed 33v (discharged). I reseted the bsm modul and now flashing blue light and showin 33v on output. Many thanks

[@drgeeforce1129]

Great video, no useless small talk.

[@appleapple8138]

Hi, thanks for the excellent video. Quick questions, what is your spot welder? Full details would be greatly appreciated.

[@fermindanieles]

I watched the full videos it’s good sir nice tips now I have the idea to fixed may scooter too

[@bluemercure]

Very well made video. In-depth. Highly informative. Thank you for this well thought video

[@Overnity]

You are a very smart Guy... 10/10

[@pjbarron227]

Thanks for an excellent video, with good camera work and narration. I have to check out your channel.

[@helenrushful]

you, my friend, are the man !

[@JoaoRenatoMascarin]

Amazing video and tutorial. In case the voltage is good but battery won’t last long, does it mean batteries need to be changed? Thank you

[@Lee-haw]

Well done 👏 Covered every aspect i need Subscribed

[@DigBipper188]

Depending on how long the "bad" cells were totally discharged for it might be possible to recover them. I have had luck with using a lab bench power supply to bring them slowly up to around 2.9v and then using an intelligent charger set to 100mA to go to their storage charge voltage. By this point I'd strongly recommend if the cells do take charge at this point that you then sit them for a couple days and regularly test the cell voltage to ensure they are not internally shorted before then fully charging them at their rated charging current. These cells of course may not be quite as reliable as new cells due to the over-discharge but again, I have had super good luck recovering flat 18650 cells this way.

[@PumpkinOnWheels]

I have tried this but is seems that my imax charger refuses to start charging since it detects too low voltage... :(

[@xiaobai7060]

@@PumpkinOnWheels yeah, you have to revive the battery with another battery or a DC power supply with set voltage of the battery. There are tutorials online on how to do it. kzbin.info/www/bejne/e6bYpYuohMx5qNGcttps://kzbin.info/www/bejne/e6bYpYuohMx5qNE here is one, but there are many more.

[@bahicapardalian3082]

Ehsh Ehf@^@,$^$ ĺs,este de, r

[@umloginqualquer]

@@PumpkinOnWheels that's exactly why you gotta use a bench PSU with limitations on current and voltage. Dead cells should be charged veeeeery slowly up to 3v.

[@jordanjohnson4290]

Your video just helped me not have to spend 200 plus dollars on new battery

[@sand6601]

Shit, that looked easy, but I know is FAR FROM EASY IN 'REAL LIFE' 😂 you are a genius!

[@mashedpotatoes5323]

It's honestly not that hard you just have to be educated on lithium batteries

[@Propaganda81]

Not easy very hard for me better the bring service

[@rezna79]

Last time I got out of my depth was with a pioneer DJ nexus 2000.. If you are unsure bite the bullet and pay for a proper service by a qualified engineer..... better then being left with a 13 kg paperweight.. 🤬😱😱😱

[@obviouslytwo4u]

Its very easy. You just have to use your brain. And smoke a bob Marley

[@jegaad1]

Wow, super many thanks. Mine I not charging properly. I think I need to check the cells

[@bokiantic]

Thank you for enlightning video - keep up good work!

[@wendypgarland]

Well explained thank you best yet

[@symilarian8650]

Amazing video. You are a Pro for sure.

[@erikaigner4575]

You make an amazingly good video. Thank you. Hope to see more. 1 tip: your english is exceptional, but your accent is thick, maybe just slow down the speaking a little. I have a very similare issue with my ewheels scooter. When I get to trouble shooting it would it be possible to get some feed bcack from you directly?

[@Itsaminerahmani]

This is one of the best quality videos i've come across on this matter, thank you very much for the detailed explanations !

[@tarantulamadness6191]

Just bought a solder gun this morning to fix a few lose solder joints on my battery, I sure hope it's just the top solder joints so I don't have to take it too far apart.

[@تتةةعخكغعف]

عمل رائع وجميل انته عبقري 😍👍

[@SalimEttani]

Very useful information. Great thanks

[@htalay]

Amazing tutorial. Thank you!

[@cheshirecat1595]

Simply you are a genius

[@anzeahac523]

Do you maybe know what would be the problem with my battery. It has 36V but the scooter does not turn on, it does not even beep. If I connect battery from other scooter, it works normally. Nice video

[@criticalfrag6986]

Thank you from bottom of my hart it realy helped

[@ReTRoSPeCTz512]

Great video. Thank you for the information. It was most helpful.

[@ebhodaghe5431]

Thank you 🙏 man... I thought my controller was bad and I ordered another one only to discover your video

[@Vmaxfodder]

happy little scooter , very little . is it still running?

[@couldlearningbesosimple6667]

Hi Sir, I am very impressed by your video. My starter does not work. My battery is full but it doesn’t start. Any recommendations are appreciated

[@lucianmichaelbandi2889]

Hi .. with my happened the same !! And the wheel it's not spinning well !!!

[@lukakoritnik3950]

Check throttle signal or hall sensor in motor

[@icici100]

Hi Thanks for educating us. I have a scooter that looses charge quickly when climbing up the slopes. How to troubleshoot the problem?

[@daveroche6522]

Excellent. Thank you very much.

[@catalinchereches3058]

Awesome diagnosing work! 👏

[@MAXlMUS]

Is there a sealing on a battery compartment cover? I'm driving it under rain, wondering if I should do additional sealing ouside..

[@Aa-ron01]

It's sealed in plastic so will be fine in puddles , but don't submerge it obviously, if you're worried go check the screws to make sure they're all still tight👍🏽

[@joeyion]

Do you know what size tool you need to take the battery cover off?

[@3LGang2L]

My cover broke it snapped after I took it off my brother ran it over with his car where can I buy a new one ?

[@TeamAmierliaTV]

Doesn't the bms 7:08 balance all the cells? So why charge them individually? 😅 Nice video anyways so informative. I just need guidance because I'm doing the exact same thing, but I don't have the charger

[@bobenonbob]

Thanks for the video. Very helpful and well explained. Subscribbed 🤗

[@arva1kes]

How do you know that cells are bad? BMS was bad and was draining batteries. BMS changed, batteries could be in working order, or did you missed some tests in video?

[@niokolabs]

You shouldn't wear a ring when playing with battery packs!

[@Thegirlsoumya]

good job mate. kudos.

[@rishav4343]

Great work, really appreciate your efforts !

[@龙猫-o2e]

Thank-you this video helpful, how to add on external battery without error code.

[@damiencrean904]

Great video , could you tell me model of charger for this scooter , I purchased one recently cheap with no charger thank you

[@Cats-can-do-it-too]

Thks. When you change some dead cells after about 3 000 km... Which is the comon time, how much extra km do you get. After those extra km, do you recommand to dispose completzly the battery EOL.

[@TheLondonCyclist]

Amazing work bro.

[@dumitru5061]

Bravo. Buna treaba!

[@burakhansivri4174]

Thank you for this great video. Where can I find a spot welder like yours?

[@spacemonkey4564]

Very informative

[@finophile]

I love your work ... take a bow

[@umloginqualquer]

Good video, thanks! One question: can I use the charging port to OUTPUT voltage from the battery? I want to use my scooter as a powerbank, outputting voltage to a buck converter.

[@matthewomokaro8342]

Nice video. Please, I live in a city where there are limited number of people who render this service (electric scooter repair.). I would love to learn how to repair. I already have an idea on how to change tyres. what are the tools i need to get. like a complete kit. please, a guide and suggestions would be highly appreciated. thank you.

[@adslammer1359]

Sorry if wasn't listing, but we're the LG cells the same capacity, great video aswell, very inspiring to people to fix there own packs!

[@enjoyesk8978]

ADSlammer they certainly should be

[@ovi_4]

Nice video, very very useful indeed but.... Question: where did you buy your spot welder from? What make and model number is? and how much it cost please ? Tnx.

[@themaximussx875]

Good afternoon, I have a question for you and I think you are the best one to ask. I don't have the battery pack myself so I can't inspect it. Could you please tell me what would be the best way to dismantle the whole package and I mean the plastic holder so it all goes apart. Apart of removing the nickel tabs what's woul be next step? How does it hold together? Thank you for your answer ahead.

[@george-broughton]

it would be neat if you could just 3D print a casing for the battery such that you didn't need to spot weld the cells themselves, and have all of them on springs. I know things out there exist but from what i've seen they're impractical for retrofitting at best.

[@1800Supreme]

Use side/edge clippers to remove the plastic tabs much more control and safer.

[@ramosasare]

thank you rely help my scooter thank you

[@adrianvazquezpichardo7542]

Hi there , nice video … I had an issue with my battery I think is the BMS , if u check the voltage coming through the BMS connector it’s just giving me 3.4v … if I check the battery directly it give mes 37.8v and if I check the cells all the cells give me 3.7v …. The led on BMS is dead .. it only give me 3 red flashes and 1 long red flash when i try to reset or connect to the charger … any idea ?

[@АРИНА-10987]

Great video!!Can I find out more about replacing the rear cable?Does it need to be soldered? Or can you just change it?

[@cherin6349]

most likely soldered

[@oneeyedrone4293]

Great repair video but a bit overkill, you might as well just get a new battery than mess around with a new BMS, replaced cells, external chargers, if doing 1-2 repairs its not even worth all the tools, just buy a new scooter lol. For battery issues I usually replace the entire battery pack before replacing part by part.

[@ashhills9281]

Did the charger work after this process or not as I've had the same problems but I've tested cells ok found faulty bms changed this scooter now powers up and works but does not charge 😑

[@paulbagshaw7565]

Would it of been easier to replace the battery pack? I’m not the best with all this technical stuff.

[@MahiEurope]

Very helpful👍

[@themaximussx875]

Hello my friend, you seemed very experienced so I would like to ask you if its possible to brake the batteries to individual cells without cutting every cell out of the plastic. I understand i will have to rip of the spot welds but looking at the plastic shell i believe there must be some mechanism to held in place the cage on each side? Would you know how to? What else would you suggest while doing so? Thanks in advance

[@rpbajb]

Great video. Wish I had your knowledge of BMS and 18650's. I fool around with small lighting projects, but maybe one day I will take the leap and try something like this repair.

[@toftlol]

Recently bought a dead m365 and I'm only measuring 2.7V on the main connector... Safe to assume I got some loose connectors in there

[@iiii9246]

amazing dude 👌

[@Zaldiv]

swagtron swagger 5 battery replacement what will be the best this swagger 5 Please tell me which one would be the one only I will Look Forward for your response

[@DowranAnnamyradow]

At 03:07 there's a button on the right corner of the battery. What is it's function? I mean what does it do when you press it?

[@ericflores8133]

Hi. May i know what tools did you use to open the battery cover? I just use my allen wrench and it ruins the screw. Please help thanks what is this screwdriver you use? Thank you

[@ThePersianMilad]

Awesome work

[@MichaelGhodsi]

thanks so much fot this video. My scooter will not turn on unless i have the DC power adaptor plugged in. in this case, when it does turn on it shows full charge. so then i unplugg the dc adaptor and the scooter turns off straight away as soon as i use throttle and load is applied to scooter. can you help with any clues on whats wrong with it ? thanks you.

[@highwayto1362]

Leaking battery cell, probably caused water damage

[@iansiddley7992]

Mine has not been charged for nearly 2 years what would you recommend?

[@callyboygid]

Cool. What are the cell types in this? Apologies if its covered in the video I must have missed. Are they good cells?

[@RenaudBay]

thanks for the video which kind of spot welder machine are you using ? it seems very efficient....

[@RenaudBay]

sorry i didn't read all your complete description..... thanks..

[@enjoyesk8978]

Renaud Bay I use the same spot welder and it works great! I highly recommend it!

[@PumpkinOnWheels]

I have 2 packs showing 1.6V instead of the 3.6V I have on the other packs, do you think I can use that imax charger to try to get those 2 packs back to the normal voltage?

[@faktytv9499]

Good Job bro

[@johncarlevaro943]

Hi, does the mi365 bear the same battery as the mi 3?

[@Aa-ron01]

Good job 👍🏽

[@MCsCreations]

Pretty nice work, dude! 😊

[@AdamHelb]

Can I ask you if the 18650 cells are protected or the shorter unprotected cells?

[@bobwa399]

can we replace entire battery set with one or two big size maintenance free batteries? the one which is used in motorcycles.

[@willfredo6341]

WHERE IS YOUR SHOP?MY SCOOTER HOBER BATTERY PROBLEM PLS REPLY

[@Melkisedek777]

I wonder how many people give their own comment thumbs up! Thanks for your video : )

[@purps7017]

Brilliant video.

[@paguliukas]

Best vid ever

[@SABR_1010]

What kind of screwdriver do u use for take off the stage

[@firatyildirim0]

Hello there. Your batteries' amperage is 10a. Can I put a higher amperage battery for the pro 2 instead of 10a? 3.7v.

[@sigmaergrundlet9732]

This would be so nice,if this was realistic to do for me or any mechanic in my area.