Hey guys I noticed there are few easily available BMS options for 9S, mostly 8S,10S. The options that are available are bulky. There is 1 I’ve found quite nice, though you have to bypass discharge. It’s rated at 5A/20A ,eswitch, voltmeter output. I’m currently chatting with the manufacturer about ordering a few for myself at those specs and possibly an upgraded version that can handle high discharge. Now about the kit, I’ve also noticed people have issues finding charger for 9S BMS, I can provide the charger , a matching port for the BMS, a metal push button switch and voltmeter. The switch and voltmeter would have a 4 pin jst connection for easy mounting and connecting. The charge port can also have leads soldered on if you like. Also I can make any wiring harness you might need, 3x3s=9S, 2x4s=8s,5x2s=10S or whatever lipo you have that you wanna combine so it will just be plug n’ play to the bms
Now in terms of cost, that I don’t have figures for yet, but everything will be transparent, everything will be at cost + $20 for my time, extra materials. The BMS is basically the size of 3 18650 cells.