10S BMS wiring help

I have here a 10s 100A bms and it is confusing me. I didn’t found B+ on that.

Here is the wiring diagram.

The only thing I know is, that charge and discharge have the same terminals.

Bms’ usually have -b port only. The balance wires are somehow b+

1 Like

There is no B+ port on the bms. B+ is the positive end on your last battery cell (B10+) and only connects to the bms via the balancing cables. You connect your last battery cell pack to the + site of your xt90. (or whatever you use)