Use Sleep mode.
When you do not need to use your VAIO computer temporarily, you can use
Sleep mode. To extend the battery life, use Sleep mode frequently. If you do
not intend to use the computer for an extended period of time, turn off the
computer.
Resuming the computer from Sleep mode is faster than from booting up the
computer.
See

Using Sleep Mode

for more information.

Decrease the LCD brightness of the computer screen.
See

Changing the LCD Brightness

for more information.

Turn down the volume of the speakers and headphones.
See

Adjusting the Speakers Volume

for more information.

Disconnect peripheral devices that are not in use.

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