Battery replacement

I believe it comes down to amp hour (AH) capacity. With 6 volt batteries you can usually get higher amp hours in an overall smaller foot print. Yes, you can get similar ah with 12 volt batteries but it will be more weight/foot print size. If you plan to do a lot of boondocking away from hookup's then 6 volt in series would be a good option. If not planning a lot of boondocking then 12 volt batteries would work and may be less costly overall.

I want to thank everyone who responded to my inquiry. The information and insight was very helpful in making my decision. We dry camp several times a year which is not a lot, but do not like to use the generator unless necessary, it's very disturbing. I will probably be getting 2 high amp hour,deep cycle 6 volt batteries. Thanks again.

Don't want to hijack this thread, but when putting the two 6-volt batteries in a FW, does a person have to worry about changing out the converter to accommodate the 6-volt batteries? Just wondering because my 12-volts are, I think, nearing the end of their lives and am wondering what to replace them with.

3-cell GC-220 battery sales is utterly cutthroat making them more of a bargain lifespan-wise than car jar RV batteries. But for many RVers who do not boondock regardless of value 5% antimony batteries make about as much sense as buying a Polar Parka for use in downtown Miami. This is a statement not aimed at the OP.

jalichty wrote:
Don't want to hijack this thread, but when putting the two 6-volt batteries in a FW, does a person have to worry about changing out the converter to accommodate the 6-volt batteries? Just wondering because my 12-volts are, I think, nearing the end of their lives and am wondering what to replace them with.

Same converter does either 12s or 6s. If you need a converter upgrade it would be for other reasons.

jalichty wrote:
when putting the two 6-volt batteries in a FW, does a person have to worry about changing out the converter to accommodate the 6-volt batteries?

No. 2 6v batteries in series look like a 12v battery to a converter.

jalichty wrote:
Don't want to hijack this thread, but when putting the two 6-volt batteries in a FW, does a person have to worry about changing out the converter to accommodate the 6-volt batteries?

No difference at all as you're going to wire two 6 volt batteries in series so together they're effectively one 12 volt battery - your converter won't know the difference.