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?
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.