I has a system installed on our van, and while in the process the installer accidentally installed two 210 watt panels instead of one. So they claim that they didn't hook it up, and want $700 to hook it up. However, it seems to me that the panel is hooked up and sending power to the charge controller. But the battery isn't receiving the charge, rather half of it. Can anyone help me diagnose what's happening here? I sincerely thank anyone that can help me out, I've been trying to figure this out for a while.
2 x 210 watt flexible panels on roof
Renogy MPPT charge controller
Victron Battery Monitor
100 amp Battleborn battery
Here's the summary video of the issue. https://photos.app.goo.gl/K8hCAiW5gzrgKvvz5
Power Output = Claimed Wattage x the cosine of the sun angle. So in this instance, using the sun level site: https://gml.noaa.gov/grad/solcalc/azel.html 52.94 is the sun angle, cosine is .79 so .79 x 420 watts = 331 watts, again we're seeing half that and can account that small difference to some hazy clouds. The thing that confuses me can be seen in the video. Both panels are providing power to the charge controller. You can see the power it's receiving in the screenshot. But it's only outputting about half of that.
So, where is the charge being cut in half? From 215 to 118? It seems to be reaching the controller inside. Is the controller "throttling down" the output? All settings for the charge controller and the battery monitor are below.







2 x 210 watt flexible panels on roof
Renogy MPPT charge controller
Victron Battery Monitor
100 amp Battleborn battery
Here's the summary video of the issue. https://photos.app.goo.gl/K8hCAiW5gzrgKvvz5
Power Output = Claimed Wattage x the cosine of the sun angle. So in this instance, using the sun level site: https://gml.noaa.gov/grad/solcalc/azel.html 52.94 is the sun angle, cosine is .79 so .79 x 420 watts = 331 watts, again we're seeing half that and can account that small difference to some hazy clouds. The thing that confuses me can be seen in the video. Both panels are providing power to the charge controller. You can see the power it's receiving in the screenshot. But it's only outputting about half of that.
So, where is the charge being cut in half? From 215 to 118? It seems to be reaching the controller inside. Is the controller "throttling down" the output? All settings for the charge controller and the battery monitor are below.






