Originally Posted by swavescatter
So an MPPT controller would be maximized if the panels were wired in series, but still work in parallel?
Right now the system seems to work fine, but I wonder if battery life and charging would be "better" with mppt...
As I pointed out and did the math in other threads... at 200w it's a toss up. MPPT may lose 3-5% efficiency at series voltages and low ~ 50W output. On those cloudy days when you need it the most.
Decision depends on your wire gauge, wire length, and it's power loss. If they used cheap 14 Gauge, go series. If 12G or better, why not leave well enough alone?
In AZ on nice sunny days my MPPT does ~ 20% better than PWM.