I had battery charged to 100% last night at 12 midnight. Then I did about 20 mins of browsing on engadget and this forum, watched 2 youtube clips, 15 mins of browsing on Android Market. Listened to about 15 mins of music. Then I went to bed. Total usage time, ~ 45 mins. Woke up this morning at 12 noon and see the battery is at 60% !!! The stuff I have running are: 1) juice defender 2) apollo task killer (set to auto kill after 1 min of screen going dark) 3) mabilo wall paper (automatically changes your wallpaper every 12 hours) 4) google news and widget 5) ring guard (prevents accidentally changing of ring volume) 5) HTC keyboard (the default android keyboard is turned off) GPS, Wifi, Bluetooth are always off, only data sync is on. Screen is set to lowest brightness.