Brian, they are polycrystalline panels from Rich solar. The pump manual states "best open circuit voltage 60-90v". The voc of each panel I have is 21v(on watt meter) 4 wired in series to produce 84v at 4.7 amps( 1st set and 2nd set) and those 2 sets wired parallel for 84 volts 9.4 amps. I don't know much about solar so I have read as much as can. I am only using it out of necessity. Any help is appreciated!
