I know this is old from the update before the last one that just came out.
I am so glad there is this option where you can set you PS3 controller to turn off by itself whenever you are not using it for 10 minutes. I used to play more with the cord plugged in becasue I would foreget to turn my controller off everytime i leave my game on which would make the battery die.
Now with that update my controller can go for like 2 weeks or mare without even charging it. Im glad they thought about that.