I have 6-75 W siemens solar panels. The maximum voltage while the sun is charging his only 12.4 v. When the sun goes down it drops to 12.1 or 12.2 V. I have 630 amp hour battery bank which is brand new. My old trace control charger would allow upwards to 14.5 V and when the sun went down it would settle at 12.5 to 12.6 V.
My daily output is about 1.3 kW. Max wattage about 265 w .
Should I be receiving higher voltage from these panels?
Is the charge controller limiting the voltage coming in to the batteries to the 12.4 max during absorption phase?
Are there settings that would allow more energy from the panels to reach the batteries?