Rover 20A load current vs input power

from the manual "The controller will limit the battery charging current to the
maximum battery current rating. Therefore, an over-sized solar array will not operate at peak power. "

I would not have an issue going with 300w, you will likely never make over 20A, if it were extremely cold with direct good sun and a very low battery you might exceed 20A but the controller is supposed to limit it to 20A to the battery.


For the record load current refers to the load terminals and powering 12v items, dusk to dawn and many other settings.
Battery current is what comes out of the controller to the battery (battery terminals).

In your case both are limited to 20A.