9 Ways to Customize Your Canon Rebel t5i
Turn off the Shooting Settings screen.
The monitor is one of the biggest drains on the camera battery, so limiting it to displaying information only when you need it can extend the time between battery charges.
To take advantage of this feature, set Custom Function 8 to Previous Display Status, exit the menus, and then press the shutter button halfway and release it. You get a temporary display of the Shooting Settings screen. Press the Info button to turn off the monitor and then turn off the camera.