Two more ways to save battery (if solutions can be found)

[snovvman]

1) I don't use the device in landscape much and would like to be able to shut off the g-sensor/accelerometer when it's not needed (since it is drawing power and active all the time when the phone is on).

I came across this:
HKEY_LOCAL_MACHINE\Software\HTC\HTCSensor\GSensor\ DeviceAvailability

I simply don't know if, by making the sensor unavailable, it would stop the power draw from the sensor, or does it simply make the sensor's output unavailable to the applications. It would be interesting to know the results if someone actually tests this.

2) The light sensor's screen brightness adjustment is limited. It does not (for me) dim the screen enough when indoors or when the ambient light is low. If it can dim the screen more, there is a marginal amount of battery that can be saved. I noticed that, using the light sensor, the minimum draw is around 90 mAh. With manual control of the backlight and turning it lower, the minimum draw is around 60 mAh.

I see a few registry settings related to the light sensor (under HKCU\Control Panel\Backlight) and wonder if there is a setting that can change the bias of the sensor to increase its adjustment range, especially toward the dimmer range...

Clearly, though, having the light sensor "poll" all the time takes power too...

Your input is appreciated.