How about a generator? Or what battery size would be better. I think this one had just the basic. I have to have an AC, and can’t always count on plugging in. Thank you for your insights.
Just some general comments upon reading this thread:
It takes a very substantial amount of battery storage, along with an equally substantial solar charging array/controller, plus a DC>AC inverter of adequate capacity in order to support 'round-the-clock' operation of an air conditioner having ~9~10k BTU rating absent shore power or a generator. The sizing of the various components will depend on the total load (the particular AC unit plus other loads you may want to concurrently support). None of the various battery / solar / inverter options offered by ETI in the past or present are scaled to meet this demand.
While this can perhaps be accomplished the effort and expense is significant, it is far from a simple undertaking IMO. A few folks have undertaken the challenge of the required modifications on an Escape trailer, but it is not at all common. Most folks lack a
necessity for air conditioning absent shore-power and find the effort and expense is not worthwhile for the 'convenience' of that 'luxury'. I understand that in your case 'round-the-clock air conditioning' may indeed fall in the category of a 'necessity'.
IMO based on your posts it strikes me that your likely most practical solution for 'round-the-clock' AC absent shore-power hookup would be an appropriate external generator. Again, the needed generator size / capacity rating will depend on the specific AC and other loads you impose but there are several threads here addressing that topic. You might get by with a generator as small as ~2200 Watts nominal rating or might need larger.
A generator cannot be installed within the Escape 5.0 itself, it would need to be either carried in your tow vehicle or
perhaps, again with modification effort,
might be carried on the trailer's rear bumper (bumper modification may be needed to do that). A propane-fueled (as opposed to gasoline-fueled) generator might be an option with its own set of pros-and-cons.
Other considerations when anticipating 'round-the-clock' operation of a generator include its fuel-tank run-time, the need to carry additional fuel, and the fact that some / many camping locations may limit generator operation to specified hours (in consideration of providing 'quiet hours' for others in the campground). There's also the weight of the generator itself to consider, both from the standpoint of vehicle loading and handling the generator at camping locations.
If you want to pursue this you may benefit from starting a new thread specific to the topic of supporting your 'round-the-clock' air conditioning needs with a generator.
All just one person's thoughts for your consideration. I wish you the best in your endeavors.