What chassis battery cutoff switch do you like?

Thank you, all of you wonderful people :-).

I made the mistake of posting a question in the pet forum. Boy, people are not so nice over there.

I do use a solar charger in the summer, and trickle charger in the northern winter, on my other van. But neither of them has been enough for the new van. It's resting loads are too high, and I often park for weeks at a time.