You will have to test your specific van/starter/battery combo.... and the loads you are drawing.
I'd start with 12.0v cutoff and test.
The van should restart from 12.0v/11.5v if you have a good battery.
What loads you drawing?... larger loads will draw more amps, which will cause a bigger volt drop on the cable and a bigger volt drop across the battery that the smart shunt will detect.... like wise smaller loads....smaller drop... so you can go lower with the detection value.
I'd start with 12.0v cutoff and test.
The van should restart from 12.0v/11.5v if you have a good battery.
What loads you drawing?... larger loads will draw more amps, which will cause a bigger volt drop on the cable and a bigger volt drop across the battery that the smart shunt will detect.... like wise smaller loads....smaller drop... so you can go lower with the detection value.
