@Eretron Any update on this ? I just installed a 18650 pack and didn’t realized the new charge port lead I bought was wired backwards, Shorted something when I plugged in. Now the board won’t turn off/on using power switch. I can get it to turn on and motors will works by power cycling the main bat plug, but then I can’t turn the board off.
Looks like I have solved my issue. Did some probing with my multimeter on BMS. Noticed not all of the soldered leads have continuity. Which tells me that one of grounds are part of the switch circuit. Then I looked at some photos I took and noticed I had P- on the other main ground backwards. Re soldered them correctly and presto ! A functioning board !!!