Batteries and Charging

[PhilMac]

I have an '08 Keystone Hornet that most of the time I have parked at my hunting camp for weekend use. I just upgraded to a 3 stage converter and I have a honda eu2000 for charging. My 12v deep cycle has died and I was contemplating upgrading to 2 deep cycle 12v batts. My question is if this will power my furnace over night? I can run the honda to charge them up during the day but was just trying to avoid running it all the time. If they will be enough to power the furnace overnight how much time would it take to bring them back up to charge? My idea would be to use it over the weekend and then charge them with the generator before I leave for the week. Also, would it be beneficial to get a small solar panel to maintain them and if so what size panel? During hunting season I will be there every other weekend.

[Home_Skillet]

I installed an extra battery in my RV just so I can run the heater all night.
And, they do( 2 total).
Just find a battery that has the longest reserve capacity.