" wrote:

Take a look at the dual voltage source circuit diagram that Jim
Wilkins supplied a couple posts back. It's example #1.

http://www.electronics-tutorials.ws/...its/dcp_4.html

I did, you dumbass #2.

Go and read my last post.

It's a simple diagram of two ideal voltage sources with
series resistors connected to a load.

And note what happens when the voltage sources have unequal voltages.

And note that we are not talking about batteries here in the case of a
municipal power grid and a PV system.

And I'll bet if you do the equations with the voltage sources
at the same value, you'll find that twice as much current
flows from the voltage source with the 10 ohm resistor as
the one with the 20 ohm resistor.

If that diagram shows reverse current flow because Battery 1 has a lower
voltage than Battery 2 (and current I1 is negative), then at what point
does current I1 become zero? What would the voltage of battery 1 have
to be for current I1 to be zero?