According to Bruce Myers, they should have 9V.
You could run 406x > DPA microdot to XLR adapters (converts 48V > 9V) > XLR to 1/4 > Microtrack, but that would be larger than a battery box.
Chris Church can make his little CA-Ugly preamp with female microdot's if you get the microdot's from DPA and send them to him. That's a pretty small rig if you go into something like a R-09HR, etc.