the RM2020 seems to be discontinued by Newmar. Make sure you get one with an EQ option...and I would do it quarterly and AFTER you take it down to 50% and the do a full 3 cycle charge.
Bill's list is great! Bill...how would you modify for those with AGM's? I would take your list and :
1. NOT do #2...but simply top up and re-top every few weeks up to a couple of months max.
2. Be sure all regualtors and chargers are set properly for the voltage differences needed from factory "wet" defaults.
3. Skip #'s 3, 5 and 6.
4. Intentionally run down the batts to 50% at LEAST once a month and provide a 100% top up.
Any other thoughts?
No longer posting. Reach me by PM!