We travel some in the summer with our 13 ft Scamp trailer. We are often on shore power but do boondock in the mountains of Montana for several weeks at a time. Up till now our trailer battery powers a couple 12v lights and an occasional furnace fan run for weeks at a time just fine; but, I know from my readings that will not be the case with my CPAP.
I am thinking in terms of running the CPAP off my 12V trailer battery using a solar charger to recharge the battery. ( High mountains = intense sun) I will need a 12Vto 24V converter to use my present machine and perhaps a separate deep cycle battery for this setup.
However,I don't really want to take the new machine out in the boonies. I've been thinking about trying to get a smaller older 12V machine that might have a lower amp draw that I could use on these outings avoiding the power loss in the converter. I understand that I'd still need a voltage regulator or filter thingy to insure clean power. Unfortunately, I have no idea which models of the older machines would most suitable for my needs.
A small generator is a possibility; we'd just rather not lug one just yet.
Also, Resmed 10 is rated up to 8500ft ........of course our preferred campground is at 8800ft - 8900ft. What problems have you folks encountered with altitude wrt the operation of your machines?
I know there are tons of posts on this subject here but I'm not sure how to find the ones most valuable to my needs. I'd appreciate any advice any of you can offer on equipment and setups that you use or direction to the threads that best discuss this.