Cheap China Solar Controller Failure
For a couple days been noticing higher than the 14.6 voltage,.....going to 15, and even 15.5,....I knew something was not right. The next day it was showing 16, then quickly went to 17+.......I quickl...
Forum Discussion
KJINTF wrote:
Yet another PWM Vs MPPT ............
Missing my point - but it's not worth the effort
Just trying to keep things simple
Should have stated exactly 98% efficiency to keep things simple and exactly 13.2 Volts DC (no voltage change) at the battery. Sorry I was not precise enough
I understand very well that if the battery supplies power not amps but power (aka watts a combination of Volts & Current)to the loads the voltage will drop under a large load (it's not a 100% perfect current source, but close}. I see my PV systems as power sources not battery chargers. If the power demands are such that the array can supply 100% of the demand then the battery will supply close to if not Zero power to the loads (as seen with the 2025RV no current flow in or out of the battery) - thus no voltage drop from the battery while the array supplies my power aka WATTS.
Proper Solar PV systems should / can easily be be >95% efficient - X wattage array should be able to put very close X amount of power to the loads - a combination of voltage and current as one of the two variables changes so does the other - power not amps or volts alone but the combination of the two
OK I'm DONE
Back to the Kubota tractors requiring my attention
PS - Yes a few cold brews today so just disregard the rant
Chillin' and Grillin' time.
