Single 12v deep cycle battery for a "lite" house battery?
I'm setting my van up as a "lite" campervan and wondered if anyone with something similar has had success running house power off of a single 12v deep cycle battery? My load will consist of running some LED lighting before bed and maybe a Fan-tastic vent during the night, not much more than that. I want to mount this battery inside so it will need to be sealed. Anything beyond that would need a power hookup available (e.g. electric space heater). The van won't be set up for staying inside for long periods (e.g. no TV, no fridge, no microwave).
From what I have been figuring, a system using batteries like sealed Lifeline, Deka or 6v golf cart batteries will be big, heavy and expensive.
Thanks for any thoughts!
2005 Chevy 1500 AWD
4x4 conversion, Ultralight RB50 floorplan,
Firestone Destination A/T, Silverado wheels, 3000w inverter, PIAA lighting