Hi, I am building a setup in my van and wanting to know if I can use power from my mppt when my battery is fully charged without using my battery.
For example, my idea is to have 12v electric underfloor heating in my van. If my battery is fully charged I want to power the heating but don't want it to deplete my battery.
Same theory to heat my water tank.
So when I come back to the van, I have a full battery and possibly hot water and a warm van. I have a diesel heater if it gets cold.
If possible, how do I wiring this?