I'm confused
I read all the posts on batteries,solar,inverters,chargers,switches,etc and i wonder if it is all really needed (for everyone)
I understand the question of batteries in a enclosed space,but is the camper really considered enclosed?.Maybe when the top is down and it is in storage,but even then you should have a window cracked to let unit air out due to moister.For our use we never camp/sleep with the unit closed up.roof vent,window is always at least cracked open to keep wet build up under control (and yes we camp in cold country spent 10 years in Idaho so know what cold is)
I have my 2nd batt. inside in a batt. box.I feel that if you check and maintain your batt. and charging system with normal use you will not produce enough fumes to cause any problems,if you develop a low/bad cell then your system will over heat ,but again it is up to you to maintain.
That being said that is why we bought a shell and built our system basic as follows:
2nd batt. is wired to a disconnect switch at truck batt. (circuit breaker and fused),power from 2nd batt.goes to fuse block then to added circuits.
1000 watt inverter is wired to 2nd batt.(fused)
solar panels go to controller(fused) then to 2nd batt.
Useage: lights,charger(cell phone,gps,marine radio,2 way walkie talkie's, head lamps),satellite receiver,t.v., portable fan, engle frig/frez.air compressor.
Factory ceiling light changed to fluorescent.
Heat is propane catalytic wall heater (no power required)
Water system is gravity feed and portable (does not freeze can be used anywhere and filled anywhere)
With this system i have never run the batt.all the way down.
I replace the batt every 3 years no matter what seems like when the warranty is up the batt is near the end anyway!
I used to keep a tickle charger on batt when truck was parked but found out the solar panels get enough light through the window's and skylight's in my garage!
We have always tried to keep everything simple,as we spend our travels enjoying without concern and if we did not have this mind set we would stay home!
Just my opinion!
Drive slow and enjoy "its the journey"
Les Lqhikers