I have a catamaran with Mastervolt system and Mastervolt Lithium Batteries to 720AH. I have 2 solar arrays with separate Victron controllers for charging. The smaller array is 2 x 125W panels on the bimini that run through a SmartSolar Charger MPPT 100/30. The larger array has 4 x 350W panels on the davits running through a Smart Solar Charger MPPT 250/100.
I am having an issue where the larger controller switches to Absorption and Float much earlier than I would expect while the smaller one continues on Bulk. The result is that the batteries are not charged by the end of the day.
The configuration for both controllers is the same using the preset Rotary Switch - Lithium batteries settings.
Images below show the controller in Absorption phase with 71% battery charge and Float phase with 75%. This is during the day with ample direct sunlight on the panels. Any advise to resolve this issue is appreciated.
