Got it, I understand the basics of batterys wired in series and parallel. I used the term "6 volt system" to specify a system of batteries, not convert to the tt to 6 volts.
I've only drained the battery twice so I don't think has been abused, which is why I am trying to figure out what the benefit is to moving to two 6 volt batteries over adding a second 12V battery and if the benefit to 6V batteries justifies that expense.
The battery sits on the tongue of the TT, behind the propane tanks, and I have room for another battery there.
I have a Honda 2000 that I use during the day for power/charging but sometimes restrictions are placed on overnight generator use, which is why I would like to have enough battery to use for overnight camping, planning to recharge them during the day on generator.
Thanks,
Carolyn