I had my tablet at around 90% charge with nothing running on it and went to bed. I wake up in the morning to find it will not turn on. When I plugged it in the battery icon would appear showing it was charged, and would not display any charging animation. I tried holding the power button for up to a minute including with the volume keys and nothing would work. After letting it charge for an hour it finally came back on displaying 0% battery and the charging animation finally started after I turned it back off. I checked my battery stats later when I turned it back on to see that the battery instantly went from 90% to 0%.
What could cause my battery to drop from 90% to 0% as shown in the link below (click image to get to the gallery with connected screenshots)?
Basically I just want to know if I have a defective unit or battery (this has only happened once in the 3 weeks I've owned it) or if it's a known bug, or simple a glitch and not to worry about it.