12v MPPT and 24v MPPT vs 24v PWM Test
Got a chance to try out comparing amps to the battery using MPPT vs PWM on a 24v battery bank and comparing those with the usual MPPT on 12v with my 230w panel. The bank is four 6s, so it was easy ...
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And that test done by the marine guy showed mppt did better in cool, cloudy, rainy conditions... when the sun cannot heat up the panel. And panel Isc takes a hit in such conditions. This is why my plan has been to run pwm in the summer, and mppt spring and fall. (not that I'll need every drop of solar I can get in the summer, but to prove the point that pwm can hold it's own against mppt under the right conditions).
