4S Li ion 120A BMS incorrectly reading cell 2

[pinchio]

I just received this BMS and connected it to my 4S pack. Cell number two is incorrect. If you watch my video you can see that when I connect to my ISDT cell reader I see the correct value for cell 2. Is this BMS defective?

 

[snoobler]

That would be my conclusion. I don't know how susceptible that particular unit is, but If you made a wiring error and then connected it, it might fry it. If you've now corrected the error, the unit won't work.

 

[pinchio]

That would be my conclusion. I don't know how susceptible that particular unit is, but If you made a wiring error and then connected it, it might fry it. If you've now corrected the error, the unit won't work.

Thanks for the feedback. The wiring harness did not change and is verified in correct sequence when connected to the ISDT meter.