[QUOTE=wco81;16135320]I've heard some Mifis won't work while being charged?

+++++++++++++++++++++++++++++++++++++++++++

I have used the rental units from Xcom from California.

Battery life is maybe 3/4 hours tops. You must have a 2nd battery
ready to go.

As I recall the unit worked while attached to a cigar lighter jack in
our rental car but not when using the wall wart at home.

There is a mod out there which can be found with Google
which requires simple re-wiring of a USB cable.