A pair of Trojan L16 series are pretty hard to beat. The investment for lithium is very very steep, still. There Trojans are on my shopping list. Perhaps lithium next time around.....
We have a Rockwood 2608ws and dry camp alot. My CPAP plugs into a 12volt plug I added to the bedroom. Our 2 six volt batteries handle it easyily even with the humidifier running. I do recharge the batteries in the morning. No problems at all.
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ADKDAN
2020 CEDAR CREEK 29RW
2018 RAM 2500