X60t - batt vs. AC screen brightness

[Marvout]

Is there a way to force the screen to run at full bright on Battery? I have my screen settings to full bright, but it significantly gets brighter when I plug in to AC. Some how the AC mode has access to a higher setting somewhere.

[RRHODY]

ThinkPad configuration has a setting to force the screen bright with battery. Also, look at the keyboard HOME and END keys that work to brightren the screen if you hold down the Fn kwy.

[yak]

RRHODY is right. If you can't use the ThinkPad Configuration application (it stopped being supported after Windows XP), the same setting is available in the BIOS.