BMS Wiring Sequence

[nasium]

I need help wiring a BMS with a 48v 13s 4p?? battery (see pictures).

I attempted to replace a bad BMS with a Daly 13s 48v and the final test (step 3 in wiring diagram) to test the battery voltage and BMS output voltage didn't match (they should if wired properly). The B- and B+ was 52.2v and B+ and P- was 4.1 volts.

I ran the BMS wires by matching the cable runs with the original connector and labeled the battery 1 thru 12. I confirmed each cable run was between 4.04 and 4.08 volts at the connector pins and the total voltage was 52.2.

Where have I gone wrong with my wiring sequence?

 

[pwd]

Is it a smart BMS you can monitor with an app/software? Perhaps the unit has the output disabled/switched off?

 

[fechter]

It looks like you did it right, but the BMS seems tripped. You might try charging briefly to see if that resets it.

 

[nasium]

It looks like you did it right, but the BMS seems tripped. You might try charging briefly to see if that resets it.

Thanks this did the trick. Thanks all!

 

[fechter]

Thanks for reporting your results.