Update: Yes, my RV does have a battery disconnect switch. This was the first time ever that I accidentally left it on, draining the batteries for 14 days down to 11.4v. The only thing on was about 6 LED bulbs.
I took off the stand-alone battery charger once the batteries were up to about 12.5v. I plugged back into shore power and the WFCO converter fan kicked on and started charging the batteries. I left it on overnight and when I went out this morning it was charging at 13.8v. Seems like they should be good and charged now (3 12v deep-cycle batteries in my bank).
One thing I'm thinking about doing is adding 100w (or 200w) solar. This seems like it would be a great way to keep the batteries charged when not camping, and when camping they would provide much less need for plugging in and/or generator usage.
Thanks all for your suggestions!
-Chris
