I'm having power issues that I don't understand. This spring the battery for the engine was dead even though the RV was plugged into shore power all winter. It wouldn't keep a charge so I replaced it...
"if you don't and leave it plugged in all the time your just boiling the water out os the batt"
You may have solved the problem. It's been so long since I've had anything but a closed cell battery I never even gave it a thought to check the fluid level. Both batteries were all but dry!