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Title: How can the sun fade?
Review: The design seemed good and the system to support 4 panels was ok, but after 1 year either the sun's output had diminished by more than 30% or these panels were loosing their omph. I was surprised at the change in efficiency in only one year. I run a ham radio on a 55ah battery and use this system to charge the battery. The first summer it stayed well ahead of my usage. This year it can not keep up and my usage is down due to a changed schedule.I am changing to a Mono Crystalline cell set-up.
