Ugh, now my replacement N800 is having issues.

I left it on this morning with the battery indicator showing 5 days' usage left. It was untouched all day, and when I got home and checked it, the screen was black. I plugged in the charger, and got the white screen with the little green battery thing in the middle (no indication that it was actually charging). I hit the power button, and it powered up, BUT...the battery indicator is missing from the icons at the top right of the screen.

I left it plugged into the charger, held my breath, and turned it off using the power button. I turned it back on, same thing as above. I tried a search and did not find anything mentioning the battery indicator disappearing. Ideas? What the heck do I do with this thing now?

(Running OS2007, BTW.)