mine last 24hours -> 36hours each charage on normal average usage like light browsing and constantly connected to the internet, SMS, Photo, Video capture, Email checking, music playing for 2 to 3hours. Video playing 20mins. and 30mins of gaming.

Last me 15->18hours on mild web browsing and constantly on Wifi, SMS...etc like above,

Last me 6->8hours with very heavy web browsing, email, video playing, music, gps, recording, Radio, watched a few youtube videos, music, and 30mins of gaming.

Last me 4->6hours on Extreme heavy web browsing + youtubing, GPS and playback videos