First TT for Drycamping

We have a Fun Finder 210WBS that we like very much. I think the floor plan is practically perfect for a couple. We too boondock often and have found this camper to be very good. As to battery life: we initially had problems using a typical 75 AmpHour deep cycle battery. It would last only about 3 days even if we used no lights, radio, or water pump. Basically we just used the battery for the refrigerator control board (gas for actual cooling) and the CO/Propane sensor. It turns out the refrigerator was drawing significant power continously for a heater in the door frame to prevent condensation. Some refrigerators have a switch to turn this heater off; ours did not so I installed my own switch. With this heater off the battery lasted 7-8 days! If we use the radio occasionally and even the water pump we can still get about 6 days out of the battery, and there was no condensation problem around the refrigerator door.. We avoid using the campers lights using a couple of LED lanterns instead. I plan to upgrade the camper's lights with LED bulbs which should enable us to use them without reducing battery life very much.