One of the downsides of using a wireless controller with a PlayStation 3 is the cost of continually replacing its batteries. Therefore, you want the batteries to last as long as possible. To help increase battery life, turn off the controller when you take a break from a game. The controller doesn't have a power button, but you can turn it off it via the PS3 menu.
Instructions
1
Press and hold the controller's "PS" button until an options screen appears on the television.
2
Scroll down and highlight "Turn Off The Controller."
3
Press "X" to select the option and disconnect the controller.