I have 2 170 watt panels in series. So that 45 volts max and 9.24 amps. I have a Victron 75/15 charge controller. Even though i'm over on wattage according to specs it makes no sense. I am way under voltage and under amperage. You think i will be ok or should i get 100/20 charge controller. My bank is 110 ah.
Thats perfectly ok, the Victron MPPT will simply ”ignore” the extra wattage when/if it occurs.
Normally you only get maximum watt/volt/amp when there is full sunshine and cold weather, preferably like 0C (32F) or lower as power from the panels decrease with higher temperature.
The higher the voltage is, within the MPPTs limits, the earlier the panels starts to produce
