6 days is really impressive!

Here it is Wednesday forenoon, my last charge was sunday afternoon and still 15h estimated usage time left.

My N9 is neither new nor empty, but also goes 3 days with "normal" usage. I just set up some rules in Profilematic:

0:00 - 7:00 all Day
PSM, LPS off, kill Wazapp

1:30- 6:00 Su - Th
Flightmode

Idle more than 2h
PSM, LPS off

and i disabled Smartsearch
Browsing, Email, Texting, Calling, Wazapp in a "moderate" rate, means, whenever i'm near a computer, i prefer to use it instead of the phone for Browsing and Email for Example.