Originally Posted by D W
From that picture they need to work on more than the transformer! This picture should be posted in "Things you see in a campground" thread.
I believe it is posted in that thread, a few years ago.
Back to the OP issue, I didn't realize the PI could be so far off. I haven't measured the voltage separately before so this is another thing to add to my 'things to check into' list. It could explain why I keep getting low voltage cut offs though if I'm reading too low.