Is this battery life normal for this notebook?

[faye]

Hi,

I have a Sony VAIO, VPCCW16FG
it is a 14.1" C2D P8700 @ 2.53Ghz 4GB ram 320Gb harddrive, Nvidia GT230M

I have set the power plan as High performance.
It say 1:50h at 100% (~99%)

i remember when the first day i got this is around 2:00h

But now with around 1:50h of battery time is quite not enough for me.
I don't charge the battery overnight, i unplug the battery once it hit 100%

What is the way to make the battery life go longer?
i believe buying a bigger capacity should help but is it my habit to kill the battery?

80% of the time, i use outlook (office 2007) with LAN

 

[Emulex]

dude use an aggressive power save plan and turn up the brightness on battery.

it will scale the cpu speed up when office needs it.

 

[corkyg]

Also, remove the battery completely when at home with the A/C adapter.