Is anyone using the Kohler 3APU?
It looks to be a simple system that provides air, heat and battery charging. I don't know if it would run a block heater or supply 110v for microwave, etc.
Here is a link to the brochure.
Kohler Power: 3APU-12V-HC: 3APU-12V-HC: 3APU-12V-HC: Idle Reduction...