just noticed something about the charge controller...
You would need to dedicate the battery bank to the system, and not use one of the batteries for the starting/ run engine battery.
here is a little note they put at the bottom of the specs on the charge controller:
quote:
Please Note: These are Positive Ground Controllers. If grounding is necessary, it must be completed on the positive line. If the controller is to be used on a vehicle which has battery negative on the chassis, loads connected to the controller must not have an electrical connection to the vehicle body.
end quote.
https://www.renogy-store.com/30-amp-...ctrl-pwm30.htm
float the ground on your battery bank, and just dont tie the neg post of any of the batteries ( in your off grid bank ) to the vehicle chassis.
Or any loads. like 110 volt motors grounded to the vehicle.
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