you stated in bulleted paragraphs the opening page
http://www.otherpower.com/otherpower_solar_used.html ,regarding "used" panels, as to what their voltages should be. However they are conflicting. :
1) In our experience, solar panels that are new from the factory usually put out up to 10 percent more than the rated output printed on their backsides. As they age, power output will decrease slightly during the panel's lifespan (but only if it has been in the sun the whole time... stored panels do not degrade!) The old Arco panel shown above was rated at 22 watts when brand new in 1980. It now produces about 19 watts.
OR IS IT
2)This is called the "open-circuit voltage." A 12 volt panel should show about 21 volts in full sun.
I would like to know how much voltage should generated by a used or new panel.
thanks,
Joe
