mppt vs pwm

Salvo wrote:
There are a few that run that high voltage.

My point is that your were cherry picking with your proclaimed 0.2% difference in efficiency. As Wiz says, solar almost never outputs max watts. Low irradiation in the mornings and battery surface charge are the main factors that prevent max current when the batteries are at their lowest SOC.

12thgenusa wrote:

How many folks are running an 85-v input?

Not cherry picking at all. This has nothing to do with mornings, low irradiation, battery surface charge or what panels one has. This is about controller efficiency at various voltages.

My point is that if one wants to point to wiring panels in series as a reason for poor performance he had better look elsewhere.

Here is the graph for all to see and make their own conclusions.