2 12 volt batterys or 2 6 volt

pianotuna wrote:
While it is true six volt jars have thicker plates, they also have to work twice as hard, and do exhibit more voltage drop under large loads (such as running the microwave via an inverter).

The majority of parks in the Ontario provincial park system (second largest in N America, second only to the US National Park system) offer on average 1/3rd electric sites and 2/3rds non-electric. In recent years when any park has been upgraded or newly built almost all the new sites are designed with electric service and the reason is obvious - camping for most has changed significantly over the years and beyond anything else the vast majority of campers today insist on the convenience of having shore power. During the summer months it's quite difficult to get an electric site, particularly on weekends, unless one has reserved 5 months in advance ... but non-electric sites are almost always readily available, even last minute on a first come, first serve basis. I've also found the same generally true wherever we've camped in the US - the vast majority of us want electric power, even if it costs more. This being the case it therefore stands to reason that equipping a trailer with dual 6 volt deep cycle batteries is highly overrated as most owners would rarely if ever fully take advantage of what those 6 volts have to offer and would be just as well served, if not better served, with a pair of 12 volt versions offering similar AH capacity. That certainly would apply to my own situation and whether they admit it or not I believe also to many other RV owners who mistakenly buy into the "6 volt is always better than 12 volt" argument simply because it's repeated over and over again on forums like this. :Z Better to understand what your needs really are, then match the battery bank to that need ... geez, what a concept. :W