Heat 1, MPPT 0
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...
Forum Discussion
BFL13 wrote:
I had the idea you had to be in Death Valley or someplace to really notice that loss of amps.
Apparently, the Death Valley for PV begins around 44C. You're losing Vmp at the rate of 1% per C degree. In case of MPPT it means - losing amps. In case of PWM it means nothing, until volts at the battery end drop below Absorb, and then you can't get a full charge.
