In addition I recommend you to run this commands and test it again: renice 1 `cat /syspart/applications/standby/background/tasks` renice 1 `ps | grep modest | cut -c1-5` It should save you a lot of battery over standby. I have increase more then 50%. (Note: modest renice would work until you call e-mail GUI, after that it reverts back. I am working on it)