Sony VGN-UX490N - Manual (Page 28)

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Getting Started
Charging the Battery Pack
The battery pack supplied with your computer is not fully charged at the time of delivery.
To charge the battery pack
1 Install the battery pack.
2 Connect the AC adapter to the computer.
The computer automatically charges the battery pack (the battery indicator light flashes in a double blink pattern as the
battery pack charges). When the battery pack is about 85% charged, the battery indicator turns off.
!
Charge the battery pack as described in this manual from your first battery charge.
Battery indicator light status Meaning
On The computer is using battery power.
Blinks The battery pack is running out of power.
Double blinks The battery pack is charging.
Off The computer is using AC power.