Bypass / Blocking Diodes
Here is the situation: I have 2 roof top panels (95W GoPower, Imp 5.53, Vmp 17.2) mono and a 100W Windy City (Imp 5.75, Vmp 17.4) poly panel wired in parallel on the roof. No room for more. For l...
Forum Discussion
red31 wrote:
at a give amount of sun a solar panel CAN operate over a wide range of voltage but the current is nearly constant from zero volts to 17-18v (for a '12v' panel), ie the IV curve is flat, one can charge a 2v, 6v, 9v, or 12v battery at the same current all at different watts!
a 6A panel in full sun could charge a 2v battery @ 6A or 12 watts.
the same panel charging a 12.0000v battery @ 6A is ~72 watts, minutes later 6A at 13.5679v ...
to taper charging, the controller turns on/off giving enough time @6A to maintain some set point.
Thanks, this makes much more sense than "Forget voltsr" Amps are the constant would have much more helpful.
