A few more questions about solar panels...
As you may recall...I had some issues with my solar panels/batteries a few weeks ago. https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/30348700.cfm I've since bought a new controller (beca...
Forum Discussion
One has open circuit voltage of 22.60V and the other has open circuit voltage of 20.8V
Most likely neither panel has a isolating diode which prevents battery from discharge at night. So, basically the panel with lower open circuit voltage is now drawing power from the panel with the higher voltage until both panels are the the same voltage..
Basically one panel canceling the other panel due to a mismatch in voltage.
Ideally paralleling panels without a isolation diode they should be "matched" in voltage..
You can correct that, but that requires adding a isolation diode to output of each panel and then connecting in parallel..
The drawback of diodes is they drop about .7V for standard diodes and .3V for Schottky diodes.
Otherwise, you could of coarse you can run a dedicated controller on each panel..
Most likely neither panel has a isolating diode which prevents battery from discharge at night. So, basically the panel with lower open circuit voltage is now drawing power from the panel with the higher voltage until both panels are the the same voltage..
Basically one panel canceling the other panel due to a mismatch in voltage.
Ideally paralleling panels without a isolation diode they should be "matched" in voltage..
You can correct that, but that requires adding a isolation diode to output of each panel and then connecting in parallel..
The drawback of diodes is they drop about .7V for standard diodes and .3V for Schottky diodes.
Otherwise, you could of coarse you can run a dedicated controller on each panel..
