Sony VAIO PCG-XG500 User Manual page 32

VAIO Notebook User Guide
Battery Indicator
Light Status
On
Single blink
Double blink
Off
To remove the battery pack
1 Open the cover of the battery bay.
2 Pull out the battery pack.
Removing the Battery Pack
Close the cover of the battery bay.
3
You will lose data if you remove the battery pack while the computer is on and
not connected to the AC adapter or if you remove the battery while the
computer is in power saving mode.
Notes on battery
To determine the remaining battery charge, see "Displaying Battery
Information" in the online manual "Customizing Your VAIO® Notebook" .
When the battery is running out of power, both the battery indicator light and
power indicator light blink.
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Meaning
The computer is using battery power.
When BOTH the Battery indicator and Power indicator single-blink,
the battery is running out of power.
The battery is charging.
The computer is using AC power.