I have used a BatteryMINDer Plus to maintain our RV's (Class C motorhome) flooded OEM engine battery for years -> plug the motorhome into the house all the time between trips, plug the BatteryMINDer Plus input into a 120V AC outlet in the motorhome, and then plug the BatteryMINDer Plus output into a always-hot 12V receptacle on the Ford cab's dash.
I have a voltmeter on the cab dash that shows the voltage on the engine battery at all times, so I can watch what the BatteryMINDer Plus is doing to the engine battery. Sometimes this voltmeter reads around 12.7 volts and sometimes it's reading is slowing creeping up to a maximum of around 13.5 volts and then sometimes it's reading is slowly declining down from around 13.5 volts to around 12.7 volts. This is the "pulsing" it does once a battery is charged over a long time from it's meager and gentle output current. My first Ford OEM flooded engine battery lasted for around 6 years until I replaced it and it's replacement Ford OEM flooded engine battery is still going strong (as far as I can tell) into around it's current 5th year. The first OEM engine battery was still turning over the V10 vigorously when I replaced it - I replaced it "just in case".
I have another BatteryMINDer Plus maintaining a couple of small AGM batteries ... one in our stick house backup generator and one in our garden power sprayer - alternating the BatteryMINDer Plus between these two batteries so I don't have to buy a 3rd BatteryMINDer Plus. I have checked the voltage on these two small AGM batteries during the times they're hooked up to the BatteryMINDer Plus and the voltage does the same thing as shown on the V10 engine battery - cycling slowly up and down.
I fail to see how a slow cycling up and down of the applied voltage between a float value and about an absorption value - once a flooded (or AGM battery?) is charged - is going to do anything but maintain it nicely.
