Thank you guys -- Ron, Tom, and George -- stepping up to the PC from its small country cousins (B vans), I was concerned that perhaps the Phoenix was set up somehow differently, and the last thing I want, now that we are going into winter hibernation here in Illinois, was to go out and find out one weekend that I had "killed" another battery -- in this case two! -- because I didn't understand how it all worked with this big baby. I had a pretty good routine with the PW, keeping it ship shape even during the off season with regard to plumbing and batteries and such, so now that we have applied "Miracle Grow Wax" (what we are teasingly saying to our camping buddies, because "Look, it grew!!!!!!) and the PW has become a PC, there's a whole lot more to maintain. Batteries are my primary concern next to plumbing in the winter -- so this education has been important.
And if sis and I decide to do a little more boondocking as we adventure out more and more -- I will be prepared with a little more knowledge about the batteries than I had before...Again, thanks -- I really appreciate these mini seminars via the forum, guys. Lots of helpful votes!