My Powermax Boondocker 4 stage converter and mt 2 AGMs seem to get along nicely together. I see the equalize/desulfation cycle happen when it does(timed)and my 6 YO Universal AGMs are happy campers.
From Best Converters
"The PowerMax Boondocker series converter/chargers include new enhanced fan control for optimum cooling. Cooling fans are extremely quiet. PM4B models now includes built-in desulfation cycle to prevent stratification that can lead to battery sulfation.
Whether you camp at RV parks or out in the wilderness, the Powermax converter/chargers will maintain your DC power supply and batteries perfectly under all conditions.
Great for standard flooded wet cell or AGM batteries!
Note: Powermax has discontinued the 55 amp model and added the 60 amp model.
Only Powermax "Boondocker" models include the extended 3 year warranty. Also includes higher 14.6 VDC boost mode for faster charging over our original Powermax PM and PM3 models. OUR MOST POPULAR DECK MOUNT CONVERTER!"