Hi Sharon,
It sounds like the display might just be stuck (either that or you've discovered the trick to Everlasting Battery!).
Try a paperclip reset (put Bio into charging cradle, push a paperclip into the reset hole until you feel a click, and the screen should restart). The battery level should come back with the accurate display. If it doesn't, email us at customercare@striiv.com so we can investigate further!
Sharon Zenker