I am completely new to Lithium batteries and about to add one as a backup now and intend to replace my AGMs with them when the time is right however i noticed that the MPPT and DC to DC charger preset for Lithium includes a Float stage , the battery manifacturer and everything i have read say NOT to have a Float stage as it can cause overcharging ,. They say that al that is required is a Bulk and Absorption charge and give the Charging Voltage where there is not a Preset Option .
Could someone please explaine why the presets contridict manifactures recomendations .