Instructions
Connect the USB cable included with the PlayStation 3 to the controller's USB port. The port is located on the top of the controller.
Connect the other end of the USB cable to a port on the front of the console. Look at the top of the controller. While it charges, a light flashes red. When charging is finished, the light is solid red.
Turn on the PlayStation 3. Press the "PlayStation" button on any controller that is connected to the console. A screen appears which tells you the status of all controllers that are currently connected. A flashing battery icon next to any controller means it is charging.