We too do not want to have to lug the batteries (dual 6v) into the house but the trailer is stored in a facility with no power... (but only about 2 miles from home)
Here are the options we are considering
1) Use the battery disconnect switch to protect against loads from LEDs, monitors etc then stop by with the Jeep every few weeks and give it a short "boost" by engaging the batteries and hooking it to the Jeep for a charge if the battery panel shows less than full charge. If necessary to run longer than 20-30 minutes then choice 2 would better.
2) Disengage the batteries but bring home every month to leave connected to the 110v outlet for a day before returning to its storage place.
3) Leave the batteries on and installing a 10 Watt solar trickle charger (Go Power) which connects through the 7pin round connector. The solar panel would likely only get 2-3 hours of direct sun per day and could have overcast days for a couple weeks at a time.
Boise winter temps are usually in the 0-40 degrees F range.
Which idea seems the best