Best RV battery

[Kenvb]

we have 6 batteries in our A class diesal.we can dry camp a week betore need generator ,but we went down to a nice one owner inside stored C Class with 2 group 24 batterys up front under the hood. the mini home is a 90 Royal Classic 21 fter.. Ford 5.8 ( 351 ) power. i bought 2 650 amp batteries in it.but only one runs the camper part, should i wire a extra battery in to it? we dry camp mostly.Propane fridge.Propane hot water heater and furnace.and a ACDC TV with DVD . most government campgrounds in Alberta are closed but private ones are starting to open.so plugging in is a option.

[Ray,IN]

Those sound like starting batteries. At any rate, only one house battery might not last all night if the LP furnace is needed.
A true deep-cycle battery suitable for dry camping will not list CCA =cold cranking amps.