My Magnum charger has 5 charging stages. Float, bulk, absorb and off are automatic. Off occurs when batteries are fully charged and house loads are minimum for a period of time, when the voltage drops a little it recharges as necessary. Equalization is manually started.
The Magnum charging is superior to solar in that solar usually charges each day then turns off after a period of time. The Magnum is much more aware of battery charge state. The Magnum also has a battery temperature probe as does my Morningstar MPPT 60 solar controller.
I'd want a charger with a temperature probe to adjust the charging voltages as specified by battery manufactures. A temperature compensated battery maintainer is a good choice.
