The biggest draw by far I think, is the furnace. I had one battery when I started out and at 8500 ft. elevation and overnight low of around 32 my furnace ran almost 3/4 of the time at night. If you are somewhere warmer you can adjust the time.
Anyway, I used the lights quite a bit starting around 3 pm until 10 and the furnace starting at 7 pm. I ran out of juice at 5 a.m. I think the 64 AH listed above may be too low for these temps. However, if you are in 50-60 degree nights, you should use probably much less than half this. So it comes down to usage.
Another thing - I had incandescent lights - if you have LED the usage drops to 20% or so, I think. I don't think a new LCD/LED television draws much if you don't turn up the volume!!!! I would think you could get 2-3 hours without using too much.
If I was stopping in moderate climates and only using TV for 2-3 hours, I don't think you need to spend any more money - at most a couple of golf cart batteries.
Good luck.
__________________
Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
|