I just purchased a 2017 Thor 29FE. I noticed that there is only one 12V house battery. But, there's room beside it for a 2nd battery. My previous Class A had 2 batteries. Is it advisable to put the 2n...
On the other hand if you want to run your propane furnace for two nights when camping in an off-grid place keep in mind a single battery may not have enough capacity to keep going for the two nights with out shore power...
The rule of thumb for the propane Furnace blower fan is one battery per night of operation... Some of them will draw 6-7AMPS of DC current...
Also if you have a slide out on your unit the second battery really helps out moving your room slides in and out...