A quick little pointer. For maximum battery life turn them off completely, even if you have to add a shut off switch, when you park the RV for an extended period of time and place them on a maintainer. I ran my Class A batteries, chassis and house, on BT Jrs, .75A and got great life out of them. Every thing in my shop; from my boat to my tractors have Jrs on them and my batteries never boil or cause me any issues. Save the converter/inverter for when you are on the road and need quick charges and slow roll the batteries at home. I do not care if you have the greatest progressive converter/charger in the world. They are rough on batteries when you stay plugged in 24/7/365.
Randy