My mxr is back in combat


pavelnik08

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Russian
My mxr is back in combat, initially there were errors of 35.36. I tried to align it through the multitool with the built-in balancer, but it did not give the desired result, as a result, I leveled the battery manually, another of the breakdowns was the failure of the dcdc 350-12v and its strapping, the price of the new bcu did not suit me and I undertook to repair it myself, as a result, dcdc and the rest of the components were found on aliexpress and successfully replaced and now my mxr is in perfect condition. I am in Russia, I am 16 years old, I did all the work on my own.
 

Viktor

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Czech republic
Good to hear from you, I'm afraid the day when my battery goes out. If it's possible to repair it by this way, that's great news for all of us.
 

slowjet

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Location
Ma
My mxr is back in combat, initially there were errors of 35.36. I tried to align it through the multitool with the built-in balancer, but it did not give the desired result, as a result, I leveled the battery manually, another of the breakdowns was the failure of the dcdc 350-12v and its strapping, the price of the new bcu did not suit me and I undertook to repair it myself, as a result, dcdc and the rest of the components were found on aliexpress and successfully replaced and now my mxr is in perfect condition. I am in Russia, I am 16 years old, I did all the work on my own.
Has your battery error returned? How did you manually level the cells, did you take the batter apart and charge the individual cells? Trying to fix my 35 error. Trying to use the balancer in the muti-tool right now. I just got the multi-tool going though. How did you realize you had a dcdc 350-12v issue? What part did you replace the converter with? Was this issue related to your 36 error? Sorry for all the questions! Thank you!
 

pavelnik08

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16
Location
Russian
Has your battery error returned? How did you manually level the cells, did you take the batter apart and charge the individual cells? Trying to fix my 35 error. Trying to use the balancer in the muti-tool right now. I just got the multi-tool going though. How did you realize you had a dcdc 350-12v issue? What part did you replace the converter with? Was this issue related to your 36 error? Sorry for all the questions! Thank you!
The error may return once after aggressive driving, but this happens extremely rarely, I think this is due to long usage before correcting the error. And she disappears on her own. Yes, I disassembled the battery and charged individual cells, the built-in load balancer did not help me. About the problem with dcdc, my bike was turned on for a long time when I tried to remove the code with the built-in balancer via the multitool and at one point it turned off and stopped turning on, I checked the 9 volt battery, it was fine, then I disassembled the battery and applied 350 volts to the dcdc manually, but it did not start, after performing diagnostic work with the board, I detected a malfunction of the fuse, dcdc, transistor, and current measuring resistor. I found the repair parts in the Chinese online store aliexpress. The dcdc failure is not related to the 35, 36 code, most likely it is due to overheating, since if the bike is running, it heats up noticeably and the air blows over it on the move, and my bike has been turned on for a long time without moving.
 

slowjet

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Ma
The error may return once after aggressive driving, but this happens extremely rarely, I think this is due to long usage before correcting the error. And she disappears on her own. Yes, I disassembled the battery and charged individual cells, the built-in load balancer did not help me. About the problem with dcdc, my bike was turned on for a long time when I tried to remove the code with the built-in balancer via the multitool and at one point it turned off and stopped turning on, I checked the 9 volt battery, it was fine, then I disassembled the battery and applied 350 volts to the dcdc manually, but it did not start, after performing diagnostic work with the board, I detected a malfunction of the fuse, dcdc, transistor, and current measuring resistor. I found the repair parts in the Chinese online store aliexpress. The dcdc failure is not related to the 35, 36 code, most likely it is due to overheating, since if the bike is running, it heats up noticeably and the air blows over it on the move, and my bike has been turned on for a long time without moving.
Thanks so much! How low was your p-group compared to the other cells? This is what mine looks like..

Screenshot 2025-03-04 165014.jpg
 

slowjet

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Ma
That appears to be much worse than mine. Glad to see you have had good success!

Thank you!
 

pavelnik08

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16
Location
Russian
That appears to be much worse than mine. Glad to see you have had good success!

Thank you!
In my case, the bike didn't charge more than 50% and that was the only reason to fix the code, if it doesn't affect your power reserve and charge, I wouldn't even solve it. There is also a problem of disconnecting connections between cells, then it needs to be fixed and it also causes code 35, 36.
 
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