In an attempt to stop asking 156462 questions in a single
thread, I'll make a separate thread about this particular one.
I know solar
discharge can be a problem, draining batteries at night. I also know diodes are what you need to stop this process. But fairly little information seems to be at hand about this.
Some sources say the voltage drop in the diode is usually more than the power it saves by preventing discharge at night. I also find it hard to believe that the fancy MPPT
controller I got from eco-worthy wouldn't have such a dead-simple thing as a blocking diode in it's systems to control this...
So, long story short: in the typical 1-panel array, do you need a separate blocking diode yes or no?