Previously we noted that heat is hard on MPPT due to the panel's loss of voltage with increasing heat. Doesn't bother PWM though, you still get Isc or more. This Spring, I took some measurements p...
There is no evidence that there is anything wrong with the Eco- W so no reason to change horses IMO.
Not sure what is remarkable about the 20a with two aimed 150s in series. In parallel they would get 150/130 x 8.2 = 9.46 x 2= 18.9, so 20 with MPPT is as expected IMO
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