It does run off the M/C battery.
I'm not computer savvy, and my attempts to send pics have been frustratrating.
I have a page consisting of a bill of mtls., with 2 pics, that Andre of Max-Zuk set up for me,but when I fwd it to others they haven't been able to open the pics. If you'd like me to try, send me your email addy and we can give it a shot. At worst, you should be able to at least see the list of components, sources and prices.
I don't have the faintest idea how to send it to this board.
BTW, I'm currently fighting an acute back problem so I may need a couple of days before I can sit at the 'puter again.
Tom