Thanks for the info jdavidsmi. I will have the batteries checked, but I would assume they are good. I replaced both house batteries about 6 months ago. I leave my coach plugged in to 30A shore power even when it is at home, and I didn't realize that doing so meant I needed to monitor the water level in the batteries more closely than normal, since they are constantly being charged. So, I unknowingly fried the first set! :(
Something else I neglected to mention in my original post is that the issue occurs even when just running off the batteries... no shore power or generator. Power stays on for a while, then totally cuts off. I would think a charging/overheating issue might not happen when the coach is running on the house batteries (and not charging)?
In some additional troubleshooting this afternoon, it seemed like the more things I turn on in the coach, the quicker the power shuts off. I tried once with only the LED porch light on, and it didn't shut off for 15 minutes (this was on 30A) I also tried once with several lights and one A/C unit on, and it only stayed 3-4 minutes (also on 30a).
Thanks again for the info. I obviously need all the help I can get! LOL!
