theoldwizard1 wrote:
time2roll wrote:
MPPT is ok but max input is 25v so limits you to 12v panels.
I don't see this as much of a problem. Higher solar voltage are typically only used when the wire runs from the panels to the controller are long.
24V panels provide lower cost/watt and smaller footprint/watt. Wiring is smaller/cheaper.
With serial connected panels shaded power is higher than parallel panels due to bypass diodes. And a combiner is eliminated along with the larger combiner to controller wiring.
MPPT controller is required for 12V batteries, higher controller input voltage and the panels are larger - typically 60 or more cells vs 36 for 12V panels.
