I had one gopower 190 watt panel, the victron 100/30. It would regularly show 190 watts, up to 19 volts and close to 10 amps. After adding a Renogy 200 watt panel, the victron shows about the same watts, 38+ volts, but max I've seen has been 5 amps.
I tested each panel by itself and each will be close to 10 amps from the panels, when I connect them in series I only get the ~5 amps max. with 38-40 volts. I switched the new extension cable to a known good cable with the same results. When I tested with the know good extension I bypassed the in roof wiring just to be sure it was not the issue.
I am charging a Renogy 100ah lithium that will accept the 10 amps from either panel.
I have also noticed that the solar input voltage and watts fluctuates constantly, I do not know if this is a new symptom or not. I have reset the controller to factory, completely disconnected it from power and batteries, nothing seems to change the behavior.
Any ideas of where to look for the issue, or how to test further?
thanks!
Roy