I will try it in this night charge, tomorrow i will send a report.

So far seems that the phone used 10% of the battery, is at 70%, with:
1) 3G connection always on with mail check every 30 minutes
2) 30 minutes of skype/gtalk online
3) 1 hour of bluetooth on with headphone connected
4) 30 minutes of web browsing
5) 10 minutes of phone talk.

I'm using power kernel v47, with smartflex on, ulv profile, 125-805 mhz, treshold 90, powersave bias 20.

EDIT:
Remove Vanilla Battery Icon from Status Area and Status Menu

Credits to: http://talk.maemo.org/showthread.php?t=66251

1) Open X-Terminal
2) sudo mv /usr/share/applications/hildon-status-menu/status-area-applet-battery.desktop /usr/share/applications/hildon-status-menu/status-area-applet-battery.backup

Done. Reverse the command for having it again.