Lol yeah.. that thunder screen is beautiful but power consuming if that's true
Not only that but the powering up of the OS and apps drains the battery too.
Also,thats why with Froyo an app killer is not really recommended.
Because, there are certain apps that will turn back on in a matter of
seconds after it is killed. When the apps start back up it drains
the battery further. So if you have it set to kill
frequently? the more battery it will drain more frequently.
Since I have deleted my Advance Task Killer.
I noticed with my Evo once you turn down all of your sync settings
to what you need? and then disable autoroaming,wifi scanning,gps,back ground data(only need this access the Android Market).
My battery goes 12-14 hours down to about 30-40% charge left moderate usage.