Hi Matt,
Six volt batteries in series would not come close to meeting my needs. One size does NOT fit all.
For example:
If an RV'er usually is on shore power, a single maintenance free battery may be the best choice for them.
If an RV'er is off the grid and deep cycles then a Lithium Ion battery bank is "as good as it gets" and is state of the art.
My 12 volt marine batteries are in two banks. One bank is 10 years old and the other is 5. They continue to more than meet my needs. I push them hard with large loads on the inverter. My ultimate battery bank would not be LI as I RV in -30 temperatures. I'd love to have six large two volt cells totaling 800 amp-hours, but can not afford the remodeling that would be required. Nor can I afford the cost of the cells.
Three different needs for three different RV styles.
