PV power after sunset

[unw1red]

I am experimenting with some solar panels and Tigo products. I have 12 x 355W Monofacial panels propped up on some sawhorses while I learn installation. I just noticed that I am still receiving enough PV power to charge my batteries. How is this happening?

 

[DougfromdaUP]

10 watts per panel after sunset? It’s not happening.

 

[BatteryBuff]

It could be a calibration error. Can you disconnect the solar panels and see if you still get the PV power at night?

 

[unw1red]

It could be a calibration error. Can you disconnect the solar panels and see if you still get the PV power at night?

It stopped reporting power about 10 minutes after sunset.

 

[Fisherguy66]

Sunset at my location is 18:16pm. I still get a few watts after its down for about 30mins. Must be stray photons still bouncin' around in the atmosphere.