Ummm. Dead this morning. And I left the charger at work. And the radio was off.
A caveat I had never charged the device since it arrived so I am not sure what kind of charge it even had. But again the meter was showing half last night.
This was off a dual core Dell laptop that charges my Blackberry and PSP and .... fine.
Kind of a bummer you have to carry a charging adapter with you if this is true