So guessing somewhere between 4 8 hours out of 24 11 22 amps day if in use.
Rv tank heaters amp draw.
For standard rv holding tanks up to 55 gallon 208 2 liters 120 vac size 12 x 20 30 5cm x 51cm amperage draw 1 37 amps wattage.
This would give your rv 6 25 hours of heater runtime without any other draws to spread over the days of your trip.
Helpful products mentioned in this article.
How much current do your rv appliances draw.
The typical rv is usually designed with either a 30 amp or a 50 amp 220 vac service that powers all of the electrical equipment and appliances the owner may want to use while camping.
If your one battery has 100 amp hours you can safely draw it down to 50 or 50 amp hours.
Easy peel and stick installation note.
Once you have determined each tank size and what heat panels you are going to use don t forget to consider the drain pipes and elbows between the tank and termination valve.
Plus a different tank holds wastewater until you can dispose of it properly.
They allow you to have fresh water even when you do not connect to a city water system.
120 volt ac power cord tank heaters cannot protect tanks from freezing while traveling.
Yes 1 12v battery would be enough to power an rv furnace but it would be better to have two.
2 hours of tv 6 6 amps.
Multiple heaters must be wired in parallel or independently controlled based on voltage and amp draw of circuit 3.