SMB can turn off your backlight after x seconds if no key is pressed, or turns off the screen after x seconds and throttles down the CPU when no key is pressed.

Changes:

– Adding a menu
– The time before the screen turns off is definable
– The configuration is saved
– A battery indicator is incorporated

http://forums.qj.net/psp-development-forum/164812-release-smb-0-40-save-your-battery.html