Adding panels to my setup
I did a search but am not understanding completely. I have two panels in Parallel 125w vmp 17.8 voc 21.9 and a 135 w vmp 17.9 voc 22.38 I want to add another panel but want to make sure it will be compatible to what I have what vmp and voc range do i have to stay within so this will work?? I assume the wattage doesn't matter as long as my VMP and VOC are close. This is a 12 volt system with a 40 amp PWM controller.