You're about like me. We don't need much.
Our power draws are as follows:
5 LED lights
.22 amp each (1.1 amp)
1 LED outside light
fan .11 amp (cools the coils in the back of the fridge),
Fantastic Fan 1.62 amps (on high)
water pump .89 amp.
There is also a 12 volt florescent light
installed by the PO which we use rarely as general lighting
for short periods, which draws 2.4 amps. This last is used rarely and is soon to be done away with, or replaced by an LED fixture.
Excluding the florescent, if everything was on at once, total draw would be 3.83 amps total.
We run the fridge
so there is also a miniscule draw to the control board.
As you can imagine there is almost no situation in which all of these devices are on at once. The wife and I read at night, so two of the LEDs are on on each side of the bed. The Fantastic fan may be on all night, but never on high once we dump the day's heat.
We're running an ACDelco M24MF battery charged by 85 Watts of amorphous thin film solar panels flat mounted on the roof, running through a Morning Star SS-10 PWM controller, which thus far is meeting our needs.
I'm sure what you have is a 12 volt battery of some sort. If it were 6 volts there would be two of them.
By the way, on the one nighters on the road we make coffee on the 2 burner stove in the Little Joe
. Like you, once we've settled in, we cook on the Coleman and use Coleman lanterns in the campground. The main use of the propane is to cool the refrigerator
, so I modified our tank mount to take an 11 lb tank to reduce tongue weight
I would suggest converting the incandescent lights
in the trailer to LED. There is a bit of expense up front, but you will make that up in reduced battery purchases for the puck lights
and as you can see the draw is very small.
Lastly, if you plan on going solar, you need to do the sort of draw analysis shown above to properly size your system.