This diagram is for the 12S version of that BMS, but it’s otherwise correct and accurate.
B0 should be the negative terminal of the first cell. 0v.
B1 is the positive terminal of the first cell. 3.7/4.2v.
B2 is positive terminal of cell 2. 7.4/84v.
And on until you reach B10 (pin 11), which is the positive terminal on the tenth cell. 37/42v.
As for the P- and C-, it depends on whether you want the BMS to control the discharge current or not.
If you wire it like you mentioned above, then the BMS has the ability to cut off the battery for whatever reason (overvoltage, overcurrent, overdischarge, overtemp, a cell out of balance, whatever), and you immediately lose all power AND all brakes. Not a great situation for a device with no handles or mechanical brakes other than you feet.
For those reasons, a lot of people choose to bypass their BMS’s discharge circuitry by bridging the connection between B- and P- with a thick gauge wire, so the BMS can’t shut you down.
It’s less safe for the battery, but more safe for the rider.
The BMS can still control charging and balancing, just not discharge.
I know that
This was a response to your statement on yellow not corresponding to 5.5mm barrels
And the one right next to it is not the one you think. Its a 5.0/1.4. the correct one would be the cable on the side
Like I said, was simply pointing out that there are 7 types of yellow connectors and 4 are 5.5mm or bigger.
I did point out a bit earlier that it seemed to be a 3.8/1.4 connector
Were basically turning in circles while both having the same end answer
