OK, I know this isn't supposed to work, but it does....
So I was using my MR-1 as a hard drive, transporting some files from my home computer to my work computer this morning. I plugged in the MR-1 via USB, and started the transfer, then had to run off to a meeting. Before I get back to my office, I start socializing and go for lunch.
I get back, and my MR-1 is still on. I forgot about it, and I was surprised that the battery had lasted so long.
So I unmount it, and unplug the USB cable, and it automatically shuts down.
I turn it on again, and then I get a "Battery Empty! Shut Down..."
I plug back the USB cable, and it fires up just fine, and mounts onto the computer as a hard drive.
With the MR-1 plugged via the USB cable, I unmount, exit USB mode, and return to the recording screen, and the battery charge icon is on!!
So far, the battery hasn't been charged via the USB cable (it's been plugged for hours and it still can't turn on if I disconnect the USB), but as long as it is connected with a USB cable, it powers just fine.
My question is: Is the DC power jack only to charge the battery, and can the unit be powered (but not charged) via USB?
Very strange....