Voltage drop from solar controller
or: Here we Go Again. Still trying to get my 420 Watts of solar to fully charge my 484 AH of battery. (Currently in southern Mexico.) Layout: 2 80 Watt panels and 2 130 Watt panels in paralle...
Forum Discussion
CA Traveler wrote:
Are all of the panels rated at the same voltage?
No. Took me a while to find where I had written it down, but here are the panel specs, from the plate on the panels:
Solar Panels
2 80 Watt Sunwize panels: Voc 22.5
Vmp 17.0
Isc 5.08
Imp 4.7
2 130 Watt Solarland panels Voc 21.6
Vmp 17.2
Isc 8.36
Imp 7.56
Does the controller have battery voltage sense capability? This would resolve the wiring voltage drop which does vary with with the amps.
No, the controller does not sense battery voltage, just reads the voltage to the output terminals.
