hilldweller
LIFE MEMBER
I never can get my head round this,.
I'm a little bit closer now..............
http://www.mpptsolar.com/en/solar-panels-in-parallel.html
This implies that the output of a solar array is current based, so both a shaded panel and full brightness panel will ( within reason ) both output 18V but the current will vary from each which is just what is needed.