How to fix or repair a Dyson V6 battery with red-light flashing: BMS replacement (with subtitles)

35 Comments

1. 

   I am from UK. I can't understand a word you are saying, but!!! Your video is excellent enough for everyone to understand. Thank you, great video.
2. 

   I would not call this a "repair" video, its just a parts replacement video, in the same way like you would replace the wheel on your car when you have flat tire, you do not actually fix anything just replace the parts and then still have to go to tire fixing shop and they would "plug the hole" in the tire.
3. 

   I have the same battery problem. Flashing red for a minute maybe then off. When measuring the voltage directly from the positive and negative holes in the battery pack, the multimeter reads near 22.6 volts wich is more than perfect. Its seems they balance and all batteries are charged. BUT, back in the time probsbly BMS Registered low voltage failure flag or just faulty chip of BMS. I'll try to figure out.
4. 

   Is it still current? Or did we find ways to flash the original BMS or something?
5. 

   muy buen video.Me puedes mandar la informacion para comprar BMS .Gracias
6. 

   안녕하세요 다이슨 V7 사용중인데 갑자기 전원이 안꺼져요 ㅠㅠ 켰다 끄려면 방전될때까지 기다리거나 배터리 분리해야 하는데 이런 경우도 배터리만 새로 사서 교체해도 효과가 있을까요?ㅠㅠ
7. 

   5:55 Dude got 3 hands. Damn!
8. 

   Very good and clean work! I did the same, simply I solder the negative pole at the end, just before closing the box, so I am sure to avoid a short issue during the work.
9. 

   Very easy and low coast ! Thank you very much we appriciate your job!
10. 

    I have not one but two of these dratted batteries. Battery *1 flashes blue (likely different fault) Battery *2 is dead as a brick. Would be interesting to see if swapping the BMS will fix it. In the meantime going to order a spare BMS.
11. 

    Avoid max setting after this. It won't last long.
12. 

    대단하시네요. 존경합니다. 제 배터리도 맛이 가서 해결법을 찾다 알게 되었습니다
13. 

    I'm charging my dyson with a normal phone charger 1ampere. I'm doing something wrong?
14. 

    It is programmed obsoletion. My battery said it was empty all the time (flashing blue), measured the 18650 cells and they were all 4.01v. I am certain the board is programmed to stop after x charging cycles. I removed the 18650 cells and use them for something else and they work perfect.
15. 

    There is a way to reset the lock status, no need for so much work to change the BMS. video here: https://www.youtube.com/watch?v=7t9yA3_KUI0
16. 

    I am another English speaker who says thank you for the subtitles!
17. 

    안녕하세요. 영상 감사합니다.
    After market 배터리를 쓰다가 충전이 안돼서 영상대로 고쳐보려고 했는데요, 저는 다른 배터리들은 다 3.5v로 나오는데 아래에서 세 번째 배터리가 12.5V 로 잡히네요. 뭐가 문제일까요?
18. 

    Thank you
19. 

    Stick it in a vice a whack it left or right it whips of in a second ,zero damage. Worst dyson ever invented same as these cars too many safety features causing small issues that would cause any damage stupidest battery pack ever, I will be bypassing the bms because I know my cells are brand new.
20. 

    Can 3rd party BMS-PCB's also be be tripped and 'bricked' like the OEM ones?
21. 

    Thank you VERY much! Your walkthrough helped me immensely.
22. 

    On my Dyson V6, the battery flashes red !! but sometimes it kicks off and the led is blue, if I release the trigger, then press it again, it still works well! if I leave it inactive for too long (+/- 30 sec) it flashes red again! and trying a few times it reboots correctly, every time like this i have a hard time knowing if the problem is with the battery (maybe BMS) or if it's the motor.
    In your opinion?
23. 

    Great job, I believe the red light is the result from a dropped battery. The thermistor wire breaks then the firmware bricks itself to red light. The board would be perfect if the firmware is reloaded and thermistor repaired in my opinion. Also you can open the battery in 10 seconds. Put small end in the vise, pull sideways both ways.
24. 

    have a dison dc62 product. It works constantly without pressing the trigger. The transistor on the card above the battery exploded. It is not fully readable 4200ad ???. Anyone have any information?
25. 

    Thank you for you kind help.
26. 

    Thanks from France, i have bought a new one but i Will try to change the pcb of the old one!
27. 

    awsome from australia ,cheers
28. 

    Thanks to you men, i have finnaly restore my old battery pack with replacing their pcb board that i purchased from China and install it with reffering from your video verry help me out dude😅 after i know it will work after just replacing that lamo Original PCB board dyson🤣.. Now i have a spare battery with a low cost😆. Thanks a lot to you men honestly🤩🥰
29. 

    Sir the bms i bought from aliexpress is a little problematic! It cuts off at 23V and shows 0V. Actually it should cut off at 21,6V but it doesn t so it gives me less run time! What a shame !
30. 

    I didnt understand a word either but I like the sound of your voice and I know what to do now
31. 

    Great video.. Right now i just considering to purchase pcb board from china for repair my old battery that same like you blinking red 32 times.. Thanks you for video that now i know its will work after replace pcb board
32. 

    It would be great if dyson does next party with easy battery replacement option, hard to know why we drop everything when 1 cells going black on all electronics…
33. 

    Sir i just seperated the bms and i will solder the new one from china.
    You used some copper wires.
    If i unsolder the original nickel connections as intact, can i put them back in the new bms holes and solder it or i have to cut them on the edge and connect with copper wires like you did?
34. 

    Very Very Impressive!
35. 

    Aber sorry wenn du eh eine neue Batterie bestellst wieso dann noch die Leiterplatte reparieren und ersetzen …nimm doch einfach die neue Batterie….? Ok vielleicht kostet die Leiterplatte weniger ….aber nur schon die ganze Arbeit und ein Lötgerät braucht es auch ……oder habe ich was falsch interpretiert weil chinesisch verstehe ich eh nicht. Danke aber video war sicher gut.