Ok, I will try to go ahead with the Kelly Controller installment, it can be an fun project.
Using VW E-UP lithium-Ion cells at 25AH each, my plan is to do an 21S2P setup.
At 4,1V pr cell at full charge, that gives me 86,1V and 50AH. (3,888 KWH nominel)
For now i will deal with an BMS later, and also i will wait to connect the MCU to anything until I see I am happy with the Kelly setup.
Only key and throttle at first to get the thing going.
From what i have seen in other posts I should limit the controller at 75A, that should still give me an output of 6KW.
My MCU is also covered in black resin, so i will probably need both downstep til 48V, and to 12V right?
I am guessing the MCU will not be happy with 86V.
This should work for the 12V (15A). https://www.ebay.com/itm/173274674117
And this charger is adjustable +/- some volts with an potmeter inside. https://www.ebay.com/itm/283017694772