Off grid for first time, need some guidance !

[OBX-GL]

Wow. Haven't posted in a while. I have missed tapping into all the available wisdom here.
With Covid and boarders closed, site availably has sucked around me.

We managed two sites consecutively at a great campground. Problem is one of them has no hook up. DW says she only needs the propane fridge/ its DC power circuit. i'm converting to LED bulbs throughout, likely only a bulb two for a few hours each day. i guess there will be the DC holding tank pump draw for a few seconds now and then. Am i missing any other loads ?

Question - i have currently only one new deep cell group 24 marine battery, (1000 crank amps 130 reserve capacity) no other useful info on the label. How far will this thing last with my minimal loads ?

I am willing to buy solar, and/or more bigger batteries. However, will likely never use them again.
Milwaukee tool offers an expensive power station that i could justify for use at work. However, it only provides 750whr before it also needs charging.

If me. what would y'all do for a weeks time till hook up is available ?

Thx in advance !

Greg

[Robbies_grandpa]

I don't think your set up will last very long even being frugal. I use two golf cart batteries when I go fishing in the mountains. I have a Honda 2000 generator that I charge them with. They will charge with the generator just idling every day for about an hour. This works even when the heater is running all night with the temperature 19 degrees.