AGM battery charging
Conext SW4024, solar array, 4 X 6volt 400ah Lifeline AGMs, Morningstar PS30 PWM solar controller.
With the SW4024 it goes to pass through at 26.5 volts, uses no battery power. During the day the array keeps the batteries at high 27's to low 28's and battery power is utilized for loads along with the grid. When the sun goes down the voltage drops of course and with my Sunfrost RF16 it draws the voltage down to the mid to high 25's. My question: Is this kind of daily exercise and fluctuation good? I have had the new inverter for a few months now and I have only seen it go into charge mode one time, that is triggered when the voltage is below 25 or when the grid comes back up after an outage.
This is a different philosophy than my old Trace, it kept the batteries at Float, 26.8, all the time, constantly charging when grid and/or solar were available. Seems like the new unit should utilize the produced power more efficiently.