Did a few try this try that.
Using 3 different batteries, 2 YTZ14S and one YT9... whatever from my 690, all crank the engine, fire up and idle correctly. All return the same results, 13 to 13,3 idling, and less that 13 while reving the engine. All 3 batteries faulty!? possible but not likely..
Verified the stator charge output, all 3 combinations return >60 VAC @ 5k rpm.
Guess the stator is doing its job.
Verified regulator connections, a bit dirty but nothing serious, and the result was the same. I'm more and more inclined to a faulty regulator... Tomorrow i'm borrowing one.
Growing old is mandatory... growing up is optional!
Raid de L'Amitiť 2011 RR (link