Do I need a larger solar panel?
I have a 20watt panel and a 8.5amp controller charging a deep cycle marine battery. For about 2 months worked fine. Now it doesn't charge past 11.5 volts. The output from the controller reads about 19 volts.
asked 2 years, 3 months ago
on "NPower Solar Charge Controller - 127 Watts, 8 1/2 Amps"