Do any solar knowledgeable people want to help me out with a problem I’m having trouble solving?
I am running 2 100w renogy panels that are about 3 years old on the roof of my GFC for the past three years. I have it all connected to a aux battery system with an ignition controlled isolator. When ignition is on, starter and aux battery are connected. When ignition is off, they are separated.
I have the solar panels connected through a renogy wanderer 30a controller and connected to the six battery. Everything is fused.
Over the last two weeks I’ve noticed my panels have dramatically decreased their efficiency and struggle to charge the battery in anything but direct sun. Even with direct sun, it doesn’t boost or flux the voltage between 13.8-15v like it has over the past three years. Cloudy days I would normally be able to run 13.6v and now it struggles to go above 12.8v
I’ve tested the set of panels and they are producing 19.6v direct off the panel. I’ve replaced the charge controller to a ridge Solar mppt with no change.
Connections are solid
Any ideas? Could my panels have failed and still produce the voltage but. It the amperage?
Any ideas ?