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How do you reset a BMS?

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CubeyTerra
Posts: 96
Topic starter
(@cubeyterra)
Estimable Member
Joined: 4 years ago

Hello! I did a dumb thing. I removed the battery terminal to see if the wires had any heat/fire damage (the other battery did... another story). As I pulled it out, the data cable snapped off the BMS circuit board! 😱 

So, I took the battery out of its case (carefully!) and soldered the leads back into place. It was obvious where it had snapped off from: a 6-pin header with only 3 pins used: black, blue, purple. It looked fine, so I reassembled it.

When I start up the bike on this battery, it shows 0%! I'm trying to think of what went wrong.

Did I...

  • ...solder the leads on in the wrong order? I was pretty careful to do black, blue, purple (left to right).
  • ...damage the BMS with heat from the soldering iron? Again, I thought I was careful.
  • ...brick my battery? 😨 

This is the third major battery problem I've had in only half a year of almost daily use. I am not especially happy with this bike.

So... I heard somewhere that the BMS module can be reset. I want to try this. How do you reset the BMS?

4 Replies
NenaGirl
Posts: 57
(@nenagirl)
Trusted Member
Joined: 4 years ago

3 Times? Bad luck I think? Probably wrong cable order... Hehehe you should ask someone for a photo... didn't open mine yet and don’t want to as long if it’s still under warenty I assume the blue and the purple ones are the rx and the tx. It maybe twisted. But I’m not shure you should others to confirm that. 

Edit found a photo of the bms on google its purple blue black

 

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wagner
Posts: 51
(@wagner)
Trusted Member
Joined: 4 years ago

I hope that this helps.
You prob. soldered the wires wrong

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CubeyTerra
Posts: 96
Topic starter
(@cubeyterra)
Estimable Member
Joined: 4 years ago

Thanks very much for those photos. Yes, I soldered the wires wrong. I'm an idiot! 🤣  It all works now.

Interesting note: My BMS was mounted upside down in the battery case when I opened it up. I wonder why.

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1 Reply
NenaGirl
(@nenagirl)
Joined: 4 years ago

Trusted Member
Posts: 57

@cubeyterra Nice to hear that it worked! 😊 I still love the soco this is the most changeable bike for me that I ever had lots to modify 😁 lots of fun, and yes I also broke some things on the bike hahahaha

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