T400s battery runtime

[pdudas]

Hi!

I have a T400s with W7 X64 Professional installed. SP9600, 128GB SSD, 4GB memory.
Somehow I'm not satisfied with the battery runtime.

My battery is 99% and reconditioned last week so really stores 99% of the factory value (42Wh).
Somehow I cannot go below 15W consume with Wifi turned on (maximum battery settings in the Power manager).
With this maximum 2 hours (maybe little bit more) runtime reachable.
My device has 3G modem, touchscreen, card reader, turbo memory removed.
I tried to turn off as much devices as possible in bios, 3G and BT turned off, USB charging turned off.

Is this correct? Or your T400s runs longer from battery?

I just thinking on maybe the 64 bit OS is the guilty in this.
Originally it came with 32 bit W7 Pro.

What do you think?

Thanks in advance,

Pdudas

[Colonel O'Neill]

Are all of your drivers installed properly?

Is it a new install? Because on new installs, MSCORSVW likes to run for a long while and chew up CPU.

Try running a powercfg -energy diagnostic from the command-line and looking at the errors and warnings.