I am thinking of adding a couple of panels to two that I already have.
The two that are now connected are wired parallel and send (in theory) 10 amps at 20 volts to the mppt charge controller.
I am considering connecting the two new panels in parallel also, but then connecting their end cables in series with the other two panels. So it would be a total of 40 volts at 10 amps to the controller to save on wire drop.
The controller is 40 Renogy MPPT.
Is there any advantage or disadvantage in either high voltage or high amps to an MPPT controller or does it just use the watts no matter how it is delivered?