My new 12v battery charging system is on a sailboat where shading is unavoidable, so my panels are in parallel. An external voltmeter shows a fairly consistent 19.5v open circuit at the SmartSolar 100/50 input terminals. However, I'm only seeing 14.5v to 18.0v on Victron Connect Status/Solar/Voltage, whether there is charging or not, and it jumps around a lot. In fact, the Status/Solar/Voltage reading appears to be the value used by the controller for satisfying the 5v/1v charging protocols. So, what exactly is the Status/Solar/Voltage value actually measuring?