Since I'm borrowing a VMS 02 IB now, and hoping to buy one before too long, I wanted to see if anyone else has been able to power this thing externally. It's supposed to accept DC from 9-16v with a maximum of 0.2 A, so I'd imagine the 9v Lithium Ion (AKA walmart) batteries should power this. The problem is that I asked the lender, and he said he's had 2 VMS 02 IB, and has never been able to have it run off external power. Anyone have some positive experiences? Thanks!