Sony VGN-NS150J - Manual (Page 87)

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Customizing Your VAIO Computer
Using the Power Saving Modes
You can take advantage of the power management settings to conserve battery life. In addition to the normal operating mode,
which allows you to turn off specific devices, your computer has two distinct power saving modes: Sleep and Hibernate. When
using battery power, you should be aware that the computer will automatically enter Hibernate mode if the remaining battery
life becomes short, regardless of the power management setting you select.
!
If the battery charge level falls below 10%, you should either connect the AC adapter to recharge the battery pack or shut down your computer and
install a fully charged battery pack.
Using Normal Mode
This is the normal state of the computer when it is in use. The green power indicator light is lit in this mode. To save power
while not working, you can turn off a specific device such as the LCD screen or the hard disk drive.