Xiaomi M365 battery Revival Over Discharge blinking red four times FIX 

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Be carfully. Yust bring each 10s pack to 3.6V and then blue led will start blinking.

Hi. It is probably the same. I charge them with low current and stop at 3.5V on pack. I used volt meter to check it.

You have 10 series pack to recharge. Charge this pack to 3.6V

At 3.6V they are empty. I charged them to full power. But 3.6V is enugh to charge it with original charger

@@trebor1477 Thanx for the 3,6 i was slightly under 3,5 and wounder why still the same red blinking error. Probably it gona be hard to charg them exactly 3,6 all 10. How much could they differ and get later by BMS balanced ?

@@metaeditors Yust try to charge each pack as close to the same voltage

@@trebor1477 How close should they be charged ?

Yes check all connections for balance contact

Try to charge it as i did. Battery is deep disscharged.

@@trebor1477 ok thanks

Same issue here with 4 red blinks om BMS. Each cell was about 2 volt. I have now charged each cell to ~4 volt each. Still the battery contact to BMS just shows 3.4volt, it was the same before Charging each cell..😢

​@@BlommanSwedhello I have the same problem, were you able to fix it?

@@macromaker Yes i fixad it. Just charge the cells more. I Think i charges about 4volt per cells. Now the original charger doing the Charging fine.

Try to measure the voltage of each segment of the battery pack

​@@trebor1477 Hi All appear to be between 3.9 & 4.0 v

@@harwoods11 All 10S points mesured?

@@trebor1477 Yep.. Battery is fully charged..all cells..giving me 40volts. Through BMS I get 20 volts. Fitted another bms but same issue. 4 red led flashes

@@harwoods11 I have exactly same problem.have you fixed your battery?

Hi. Did you try to charge this pack slowly? It can be damaged cels. You will need to replace them in this case.

@@trebor1477 yes I tried to charge at 3.7v and 1 amp keeps going up to around 0.6v then back down

Try with 0.2A. 1A is quite high. For first atempt set it to lowest like 0.2A

IMAX B6

I did charge all the cells the same. But now I start building my own batteries m.facebook.com/groups/202140770347162/permalink/1396861724208388/

use nimh mode a few seconds, so it bump battery a little bit enough to enable liPO mode to recognise

@@eugenyperepelyatnikov4162 Should I be using DC or AC? or does it technically matter?

@@Five7weezy what do you mean? in iMax b6 if it want to charge in LiON mode. select NiMH mode for a few seconds, it will bump voltage of a sell a bit and then select LiON mode again and charge like normal

@@eugenyperepelyatnikov4162 sorry that was a seperate question. I was just wondering if the B6 should be charging the battery via DC charge or AC charge. As my balancer has the option for either. But I will do what you said and let you know how it goes. :)

Ah yes … i have solution… I confuse the black and red cable 😂 plus and minus. Now it’s works !!

Hi. Yes that is usually the problem 😁👍. But it is good if you have a multimeter to check all connections.

I have the same problem, whats the solution ? I dont understand 😢

@@frankscalda3361the cable black and red should be change on the side of the battery

Ou … I know the problem. I put the black cable on the wrong place. It should be on top of the battery (on the metal) not on the side metal. (the 5th pack from left to right of all packs ).

Did you measure all 10 segments in P? Probably there are unbalanced groups or damaged cell's

Did you plug it to the charger? Is it charging? Fully charged 18650 cell is 4.20V

@@trebor1477 When i plug charger it's didn't charging. Here is voltages on cells: 1 - 3.99v 2 - 4.16v 3 - 4.03v 4 - 4.16v 5 - 4.15v 6 - 4.16v 7 - 4.06v 8 - 4.16v 9 - 4.17v 10 - 4.03v bms output to mainboard 41.2v Brake light working, forward light too but on lcd only one blinking dot and when i accelerate scooter doesn't run.

@@DDanielQ try to balance each cells as close as it's possible. But there can be that some cells are also bad and they need to be replaced.

@@trebor1477 How can i test cells one by one without messing? I will try to more balance groups too. Blue solid light on bms is an error?

@@DDanielQ you can test only groups if some of them charge up to quickly they are probably bad. Blue is OK . Try to drive a little and then plug it in the charger. Now I don't have m365 any more. I switch to smth stronger ))

Well if cells are not busted it will work yust fine

Sorry if the battery is not holding charge then she is dead. Replace all cells with eve 3200mah and you will gain more AH with the same size battery

@@trebor1477 Friend can you please confirm I am charging Lipo 0.1A 4.7V setting on IMAX It takes very long time each section to charge correct? If mine are above 3.8V slightly then still all cells need changing or possible BMS board replacement?

@@deepmystic6739 hard to say like that. Maybe one from 10P is still not full? BMS don't die just like that. Usually there is other problem. Are all connection points from the battery to the board undamaged. Try to lift them with plastic and not with metal

How many V do you get from the battery? Try to press the reset button near LED diodes

@@trebor1477 Batteries all charged individualy to 4v showing 3.87-3.91. Re attached battery and blinking red light. Put charger in and still no look. Shows around 3.6v oit put on wires after BMS so looks as though BMS is not letting full power through. 🥴

@@stevenharris2190 Did you charge all 10P

@@trebor1477 yep all 10 and all around the same. ive also just tried this ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4RjLWhz-SWI.html

@@trebor1477 is it worth swaping the BMS

Because how are the batteries connected in series. This is 10S battery pack. And the charging connections are not the same there is a difference. If you charge it on one side you will charge only 5 battery groups in series so this will be 5S. If you look at batt. Pack you will see in total 5 segments with 6 battery together. In this one are 3 with minus terminal on one side and 3 with plus terminal on one side. This one pack is 2S. So if you charge the same on one side you are 50% done and this will be 5S shared so you need to do the same on the other side to charge other 5S pack. Ok ? )

@@trebor1477 Thank you for taking your time to answer me. I will investigate it further. I still don’t quite understand it, but I will find out when I will be working on it myself. 🙏

@@steencd yust do it as it's in the video 👍

Measure all battery contact on BMS. If you are getting voltages below the 3.5V i think this cam may be a little lower around 3.3V. Then you need to charge those segments. And if You get 0V then you need to swap those batteries. Or yet better change them all for EVE 18650 3200mah cells.

hi thanks for that, i just checked all the segments and they are all reading 3.5v but the last 2 segments nearest to bms real 3.0v can this cause the bms to flash red 4 times? @@trebor1477

can the low voltage cause the 4 red flashes on bms?@@trebor1477

If this is mesured at end off black connector then no. You need around 42V when it is full. And 38V vhen empty. If you got blinking red led try chraging cels as i did.

@@trebor1477 I’m getting 36v from every connector however from the main red and black connected to the bms I only get 3v

@@meco3215 what is LED colour? Blinking red or blinking blue?

@@trebor1477 4 blinking red

@@meco3215 battery is too low discharget. Do as i did in video.