Evaluating a used solar panel & controller?
Hello folks - Thete's a 100 watt panel plus controller, local to me asking price $100. I emailed the seller and asked for details and what make/model of controller. (No reply yet.) I'm pretty s...
Forum Discussion
I guess what I'd want to see is the output of the CC to a battery. Beyond that, the price is low enough to just grab it and figure out any issues with the CC in the future.
Panels are rated to 80-90% over 25 yrs. so age doesn't really mean that much except not to have your first module being of an ancient variety that has a weird voltage/current output. In case you want to add more panels later, a close match of output is a good thing.
I'm guessing but the output voltage of a 12V nominal module of 100W would be in a range of 15V to 22V. Current could be very variable depending on sun value and orientation.
Bottom line--if it works, grab it.
Panels are rated to 80-90% over 25 yrs. so age doesn't really mean that much except not to have your first module being of an ancient variety that has a weird voltage/current output. In case you want to add more panels later, a close match of output is a good thing.
I'm guessing but the output voltage of a 12V nominal module of 100W would be in a range of 15V to 22V. Current could be very variable depending on sun value and orientation.
Bottom line--if it works, grab it.
