One thing to consider is to watch your DC VOLTAGE DROP as the night goes along and if it drops down to around 12.0VDC this is where you should stop using the battery. You will need to have a multimeter to do this measurement.
This is approximately the 50% charge state for a deep cycle battery. If you DO NOT recharge this battery back up to at least its 90% charge state its performance will drop like a rock when you use it again. It will eventually do a self destruction of the battery. It is important to keep the battery going above the 50% charge state for long life use of the battery. It is also important for me to always start out with at least a 90% charged state battery setup when I started using them for the over night heavy run off the batteries. My pan is to make it to the next morning and still read around the 12.0VDC on the battery and then re-charge with my 2KW generator back up to the 90% charge state in a quick three hour generator run time so we can do all of this all over again the next night. This is what I mean by being successful...
There are really only a couple of ways to do this and remain successful.
Camping in your back yard is an excellent idea - then see what you need to bring along with you to make it thru each night with your planned loads.
just saying
Roy Ken
