Just disabled work e-mail on the phone. IT requires a passcode, and Android's interpretation of this requirement causes it to always present the full keyboard to type out a 4 digit PIN I set. Unlocking the phone has been very annoying over the past day and a half.

Battery icon is now flashing, and the phone has warned me it's about to die twice. A little under 12 hours off the charger and it's about dead. I'm going to let it shut off this time before charging, just to make sure it's not some weird calibration issue.