Originally Posted by sirmaru
I have a hunch your Screen Dim is the culprit. The KFHD7-32 has an AutoBrightness feature which uses almost no power and uses the camera lens to adjust brightness automatically to the amient light. Screen Dim is unnecessary with the KFHD7-32 while may have some use on the KF1G which does not have the AutoBrightness feature.
In theory, ScreenDim's upper slider should use no power at all (well, except for the little bit of memory that is being used)--it should save batteries, in fact. So if the lower slider is set to 100%, no battery usage should occur.
The lower slider will use some power whenever things are drawn on the screen, but on well-designed devices with hardware acceleration, this should be very little. And it shouldn't use batteries when the screen display isn't changing.