Ivylog wrote:
Having to open a window decrease the efficiency of a Wave heater so use your TT's heater. You already have a second 12V battery... in your truck so buy a good 2/10/50 battery charger like this.. It's good to have a battery charger and jumper cables along anyway. While one battery will probably be enough, you do not want to pull it down more than 50%.
It's not going to be that cold so stop worrying about getting the most efficient way to heat.
Using a separate, stand-alone battery charger is good advice. Many on-board camper converters don't seem to operate as intended. Mine will never go to "boost" mode regardless of how depleted my battery is. It always operates in "absorption" mode which charges the battery very S-L-O-W-L-Y. It can literally take days to recharge a depleted battery. Almost any inexpensive 10 amp battery charger will work to recharge your battery. A fully automatic charger is nice, but if you are in a campground that limits generator use you won't be able to run the charger long enough for the automatic feature to be of much benefit.
