Thor Forums

[16ACE27]

I don't see no math but what the note says in your picture is correct.

Here's the thing about solar panels (and my numbers are just for ease of understanding):

If a panel is constructed on 24 "1 volt" plates to provide a 24 VDC output, all it takes is a slice of shade to cover just one of those plates and your output will essentially go to zero as that shaded plate acts as an open.

So your pic showing 2 panels in series, in parallel with another 2 panels in series, is more reliable as far as always providing some charging even when some panels may be partially shaded.