Sony PCG-XG19 Manual

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Connecting a Power Source
11
To charge the battery pack
1
Connect the AC adapter to the computer. 
2
Insert the battery pack.
The computer automatically charges the battery (the battery indicator 
light flashes in a double blink pattern as the battery charges). When the 
battery is 85% full, the battery indicator light turns off. This process takes 
approximately two hours. To charge the battery completely, continue 
charging for an additional hour. See “Displaying Detailed Battery 
Information” in the online manual Customizing Your Notebook.
There are two battery indicator lights on the computer: 
Battery Indicator
Meaning
1
Indicates the status of the battery pack in the battery bay 
on the left side of the computer.
2
Indicates the status of the battery pack in the drive bay on 
the right side of the computer.
Battery Indicator 
Light Status
Meaning
On
The computer is using battery power.
Single blink
When BOTH the Battery indicator and Power indicator 
single-blink, the battery is running out of power.
Double blink
The battery is charging.
Off
The computer is using AC power.
Battery indicators
Battery pack (supplied)
Secondary battery pack 
(not supplied)