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Hello everyone. This is my first post! I am having an odd problem where the open circuit voltage of my two solar panels is 21 V, but as soon as I connect it to my charge controller (a Renogy Wanderer Li 30A PWM controller), the panel voltage drops to about 13.4V. The photos show the voltage...

Thanks Bud. I have two Renogy 100W panels with an open circuit voltage of 24.3V and a optimum operating voltage of 20.4V, in parallel, connected through the SCC to a 12.8V 200Ah LiFePo4 battery. My concern is that if the SCC is cutting voltage at 13.3V, the battery is never getting fully...

I do have another concern - the SCC does not seem to know what mode it's in. If you check the screen shot above from the Renogy DC Home app, there is a "---" under the image of the SCC. That is where the charging mode (boost, float, etc) is supposed to be. Renogy says that this is "---"...