Hey guys and gals, I have a question regarding something I want to do on my truck, but I'm not sure what kind of batteries will do for me. Basically I've just bought a new truck which has no apu and has no frame space for one. On top of that it's quite heavy, so additional 4 batteries are not the way I want to go. So the question is is there a type of batteries, that would allow me to run an AC and inverter when parked and at the same time start the truck when it's time to go? I'm planning (at least I'd like to believe it's possible for someoneto do it for me) to hook the under bunk AC to a condenser and the starting batteries, so it runs when engine is off and hook a Honda eu2200i generator (mounted in a tool box on my trailer) to the inverter charger that shout keep the batteries from complete drainage. Would AGM be better for that purpose than a dual purpose batteries? Any suggestions on how this whole thing needs to be done by someone who has done it already? Thanks!