I built a portable solar panel. Then installed and wired a 7 prong receptacle. The same as on the TV. I wired only the common/ground and the equivalent of the charge line in the 7 prong receptacle to the battery. Including the proper sized fuse. I then wired a 7 prong plug to the solar panel controller.
I then wired an inverter to the battery, again using the appropriate size wire and fuse for the 1100 watt inverter.
Obviously the solar panel (85 watt) will not replenish the full capacity of the inverter. We use the inverter to power the television, charge cell phones, power laptops and power the vacuum cleaner. Short term use of high current devices like the vacuum cleaner do not deplete the battery to the point where the solar panel can not replenish the battery on a sunny day.
So far we have camped off the grid for 5 nights without a problem. There was no need to run the furnace. Which would deplete the 1 Group 24 battery rather quickly.
Knowledge: "A gift to be shared. A treasure to receive."