Is there any way to disable adaptive brightness on battery?

[VirtualMark]

I've tried to disable the adaptive brightness, both in Windows power settings, and in the Nvidia control panel. I have succeeded when it's plugged in, but when I'm running on battery it's still on.

Adaptive brightness is annoying, as it brightens when I have a white background, but dims when it's a darker scene. So for a dark movie, the display dims and makes it hard to watch. I like sitting outside when on battery, and the laptop isn't very good for that if it's going to keep dimming.

Is there a way to disable this "feature"? The screen isn't too bright for outside use anyway, I need every bit of light I can get.

[Bjarke]

It is unbelievable that something like this isn't fixed, everytime i use my laptop on battery this annoys me.

[Coogah]

I feel you on that. Happens a LOT when I'm watching South Park. It'll start flashing every other scene >.< I haven't gotten around to actually trying it yet, but there is a service (at least in Windows 7) called Adaptive Brightness. This might be able to be disabled to prevent auto brightness adjustments. It shouldn't cause any other problems once disabled, but I can't guarantee anything. Be careful when messing with services to avoid headaches later >.<