Hello! Could somebody please take a look over my BMS diagram? Sorry it’s so messy!
What is the maximum discharge current of your bms? If it’s not at least 60a, you’ll need to bypass the bms on the discharge circuit.
Also, connect the red wire from battery B to balance port 4. Not the ground wire from battery A
It’s only rated for 15A discharge, thanks for taking a look. Is this better?
Looks good now. Only thing now too many connectors in my opinion. I prefer hard wiring the batteries together and to the bms. Less chance of connectors rattling loose and less circuit resistance.
Thank you, is it possible for me to connect the black balance wire from battery B to B- instead of the large gauge battery cathode wire?
Yes, the wire going to B- does not need to be 10AWG like the wire going going to the ESC. You can use the balance wire for that if you’re not running the ESC current through the BMS like the second diagram
The balance and charge wires can be 18AWG to 22AWG and the voltmeter leads can be any size, preferably 22AWG not because of current-carrying capacity, but because of vibration resistance of the thicker wire
@b264 is correct but only if the bms is bypassed for discharged. So you could connect the balance ground wire of battery B to B- and run the main ground wire of battery B straight to the Vesc.