Battery

Most will tell you it depends on usage. For the first 2 years of use in my 17 1/2 179 I used a series 27 deep cycle and it was more than adequate. The lights on the later model Rpods are all LED, the radio, fridge (on propane), furnace, and electric ignition on appliances take very little 12V therefore I never wanted for power. A 50amp solar panel usually could top off the battery before the next evening. This this fall we decided to see Yellowstone in the snow, so did a 4/season prep on the unit complete with heater pads on exposed pipes and I added a small 22qt freezer that also runs on 12v to increase capacity of the fridge. The 1 series 27 battery proved to be inadequate to say the least. I am now on the fence between the 2 6v so many in the RV world like and 2 deep cycle series 24 wired in parallel. I boondock as well and do like the idea if I have a battery failure in my TV I would have the option of swapping in one of the trailer batteries. I also have a 2000I Honda to supplement the DC setup and run the A/C appliances. Hope this helps.

I use two 6V 220AH golf cart batteries connected in series. Flooded, not AGM or Gel. GC2 case size. That is the largest size that fits in the tongue battery rack.