Well, it’s kind of complicated ! We would prefer going 24V BUT……we are going 12V.
The problem is the A/C. We decided to go with an Autoclima Fresco 9000. As we are in Canada, it is not usual to operate on 24V. So the supplier says it might be complicated to get parts/service in a reasonable time. Also, the truck is 12V and we want to use the alternator to help charge the batteries. DC-DC 12V-24V chargers are rather rare.