I have a smartsolar 75/10 controller. I had planned to use 1 100 watt panel to charge some smaller batteries. I may still use it for that, but now I'm about to install 200 watts of solar to charge my 12v 100ah agm battery. I used the victron calculator and if I click the allow greater then 130%, it shows this as workable. From what I can gather the max wattage is 145w, which I'm assuming is for lifepo4 batteries at 14.5 volts?
I may eventually add another 400 watts to my system, and obviously would buy a new controller. My question is.. should/could I use my 75/10 controller with the 200 watt array? Or buy a larger controller that could handle my future max wattage (600 watt)?
