Sony PCG-XG29 - Manual (Page 27)

Connecting a Power Source #
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 VAIO® 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
(optional)