afremont:
I believe that the MAX voltage is 6V, so I could see it scraping by at 7V or less, but that would really be tempting fate. I would really expect it to be all over, but the crying, at 8V.
It is what it is. Electronic devices usually "work the way they are wired" (both arduinos and multimeters) and usually ignore inexact thoughts of "I believe that the MAX voltage is 6V, so I could see it scraping by at 7V". If 6v is the "max", how would the arduino scrape by at 7v? Curious.