I'm trying to discharge mine as we speak. Got the 20% warning 2 hours ago. Had it playing iPod whole time and it's still going,LOL.
Edit: now 2.5 hours of continuous use after 20% warning and the battery finally died.
Correct. The 20% warning and battery meter aren't correct. I got nearly 2.5 hours of continuous use just to get it to the 10% warning.