I came across something that is really cool/useful
here.
To go into a diagnostic-type thing in android, go into Phone and type *#*#4636#*#* (4636=info on the dialpad) and it will take you to a page called "testing." There you can screw with all kinds of settings and battery stuff. Root is not required.
If you find yourself going there quite often, you might also want to know that you can create a shortcut to testing with anycut.