How can i increase battery run time?

[pitoko]

Hello, i've notebook sony vaio VFN-FS115B

I've made yesterday na experiment of battery run time:

low cpu usage (0-2%)
cpu is running on low power (800MHz instead of 1600MHz).
Wi-Fi is off
the lcd monitor is displaying all the time, but i have press Fn+F5 few times to decrease brighteness to minimum
all usb devices unpluged
i've switch off option to stop hdd, hibernation, stand by etc. when laptop is not used

timebattery
left
[min][percent]
-------------------------------
0100
588
1084
1580
2076
2575
3071
3566
4062
4558
5053
5545
6042
6533
7029
7525
8022
8522
9017
9517
10012
10510
1107
1156
1205
124 - Computer has gone into hibernation mode 

I'm not too satisfied with result of two hours... This is not so much... How can i longer this time, without buying another battery?

[andreix]

Have you tried making the desktop black ? Or another very dark color ?

[tweety2b]

Actually if I am not mistaken, our tests show that white backgrounds use less battery.

Kr,
Nico

[pitoko]

Have you tried making the desktop black ?  Or another very dark color ?

Thanks for the reply. So you suggest that laptop lcd monitor is taking more of battery power? During my work i prefer to fullscreen everything, and unfortunately most of the applications use bright colors

[pitoko]

Actually if I am not mistaken, our tests show that white backgrounds use less battery.

Kr,
Nico

No, no, sorry

I've wrote
"the lcd monitor is displaying all the time, but on the lowest brightness"
and i was meaning that i have press few times Fn-F5 do decrease brighteness of my lcd...