Im getting this Message every nite: "Input Voltage Lower than Battery Voltage"

[Matrix]

The Windows App is telling me this in at an informational alert every nite. 

"Input Voltage Lower than Battery Voltage"

But there is no warning LED or info on the Classic screen. 

What does it mean? I have searched the web and other forums and the manual but cannot find anything about this for the Midnite Classic 150.

I would have thought that one would expect the "Input Voltage Lower than Battery Voltage" at nite.  What am I missing?

Input Voltage: 11
Battery Voltage: 25.5

Is it a setting in the Classic that is keyed wrong?   

[ClassicCrazy]

That is normal .
The input voltage from the PV is nothing but the Classic always shows some voltage at night - like about half of battery voltage or less.

Larry

[russ_drinkwater]

All of mine do the same at night.
9.2 volts on one and 9.9 volts on the other one.
Never thought about it that much.

[Matrix]

Thanks. I was just getting a message and did not know if there was something to know where do about that message. I had not seen the message before