Xiaomi M365 battery Revival Over Discharge blinking red four times FIX

[@gommenir611]

You saved my battery! thank you

[@trebor1477]

I'm glad to help man. Please click subscribe button 👍😁

[@hosseinrezaei988]

Hi How did you set the lipro charger?

[@Loco499loco]

When i start reverse in the situation at 2:06 my balancer (imax b6) say reverse polarity and when i wanna start it says connection break … what I can do

[@Loco499loco]

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

[@trebor1477]

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

[@frankscalda3361]

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

[@Loco499loco]

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

[@darkdeepfire]

Thanks for the tip man !

[@trebor1477]

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

[@dimitardimitrov3000]

Hello ive got a problem the BMS blinks 3 times short and 1 time long also ive measured all the pack and they are 3.9-4.0v but on the output cable to the controller only has 3.8v...

[@frankscalda3361]

Good morning, Thank you so much. Thanks to you, it's flashing blue now. But no way to charge (green light) I don't have bad soldering. An idea ?

[@trebor1477]

Yes check all connections for balance contact

[@sulimankhan90]

Hi i got a bms i put on battery and its blinking red constantly. And the output is like 16v to 17v switching. Do you know whats up with it. It does not take charge from the charger.

[@trebor1477]

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

[@sulimankhan90]

@@trebor1477 ok thanks

[@BlommanSwed]

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..😢

[@macromaker]

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

[@BlommanSwed]

@@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.

[@wolfganghenzinger4713]

May I ask, you basically charge the battery packs in one way (+/-) and than you just redo all the charging with -/+? Is 4.2V on the charger OK? Shouldnt LiIo 3.6V? THANKS

[@trebor1477]

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

[@trebor1477]

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

[@metaeditors]

@@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 ?

[@trebor1477]

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

[@metaeditors]

@@trebor1477 How close should they be charged ?

[@harwoods11]

Hi I have replaced the bms board and both rails but still have 4.red led lights. The battery pack voltage is 40v but the bms output is only 20 odd volts. Any ideas? I have tried another bms but its the same result.

[@trebor1477]

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

[@harwoods11]

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

[@trebor1477]

@@harwoods11 All 10S points mesured?

[@harwoods11]

@@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

[@hosseinrezaei988]

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

[@stevenharris2190]

Why do you not charge the last pack as per the others.

[@trebor1477]

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

[@conorbearsbro]

Any idea why one pack will not take a charge the rest are around 3.7 volts

[@trebor1477]

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

[@conorbearsbro]

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

[@trebor1477]

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

[@keniabeltran5678]

What type os battery charger is that?

[@trebor1477]

IMAX B6

[@Five7weezy]

I have almost the same balancer as yours. I get the error "CONNECT ERROR CHECK MAIN PORT" I have done everything you said in the video, any suggestions as to why I get this error? LiIo Charge 0.2A 3.7V(1S) Connections look identical to yours.

[@eugenyperepelyatnikov4162]

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

[@Five7weezy]

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

[@eugenyperepelyatnikov4162]

@@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

[@Five7weezy]

@@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. :)

[@Loco499loco]

One pack don’t load. It’s stay between 00.42-00.44V. Go down and up. What I can do. Should I replace the battery’s ?

[@Loco499loco]

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 ).

[@bryanmccool2587]

I love you video and thank you for taking the time to make it. My ? Is settings on your B6 charger what is the math on capacity cut off on a 3 cell group. mine is default 50000mAh

[@trebor1477]

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.

[@Aizim]

Oh 4 time red light on bms is over discharge battery?

[@trebor1477]

Yes, probably.

[@Aizim]

@@trebor1477 i charge it directly using the charger, it's now alive but the problem now is the chsrger is blinking red 😑

[@DDanielQ]

Hello, thanks for video. Charged battery pack like you show. BMS show solid blue light. But when i turn on scooter i see on lcd one green dot blinking thats mean the battery is discharged. How can i solve this?

[@trebor1477]

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

[@DDanielQ]

@@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.

[@trebor1477]

@@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.

[@DDanielQ]

@@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?

[@trebor1477]

@@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 ))

[@stevenharris2190]

Great instruction and video but still not working. BMS will not go blue any ideas

[@trebor1477]

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

[@stevenharris2190]

@@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. 🥴

[@trebor1477]

@@stevenharris2190 Did you charge all 10P

[@stevenharris2190]

@@trebor1477 yep all 10 and all around the same. ive also just tried this kzbin.info/www/bejne/aoPNfYqer5KGjas

[@stevenharris2190]

@@trebor1477 is it worth swaping the BMS

[@deepmystic6739]

Have same problem all cells are reading 3.8v but same issue When battery in scooter Its not holding charge and not turning on unless charger connected but turns on with error 18v total on output cable When pressing BMS switch Blue led few seconds then red flashing lights

[@trebor1477]

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

[@deepmystic6739]

@@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?

[@trebor1477]

@@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

[@steencd]

Please explain why you are charging the battery connecting the chargers minus to plus, and its plus to minus. Thank you. It doesn‘t make any sense to me.

[@trebor1477]

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 ? )

[@steencd]

@@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. 🙏

[@trebor1477]

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

[@meco3215]

My battery reads 3.53v is that not normal

[@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.

[@meco3215]

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

[@trebor1477]

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

[@meco3215]

@@trebor1477 4 blinking red

[@trebor1477]

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

[@Randy-le6ub]

This seems to be working

[@trebor1477]

Well if cells are not busted it will work yust fine

[@u2b83]

4 blinks on my battery BMS when connecting 42V to charge wires; unfortunately it's not taking a charge (charge light is green instead of red). Main battery leads measured 2.8V instead of 40V. Now trying to charge with 42V over main leads to see what happens, it is taking a charge so far...

[@trebor1477]

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

[@EFDawahWiseLanternDen]

how to contact you if we need help bro maybe we all can make a small group or something ??