Sony PCG-SR27K Primary Service Manual page 32

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VAIO Notebook Quick Start
To Charge the Battery Pack
1 Connect the AC adapter to the notebook.
2 Insert the battery pack.
The notebook 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 5.5 hours if the
system is on. To charge the battery completely, continue charging for
approximately 3 additional hours.
The battery indicator light on the front of the notebook indicates the status
of the battery pack.
Battery Indicator Light
Battery Pack
(Supplied)
Battery Indicator Light Status
On
Single blink
Double blink
Off
✍
Both the battery and power indicators blink when the battery is running out of power.
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Meaning
The notebook is using battery power.
The battery is running out of power.
The battery is charging.
The notebook is using AC power.
Battery Indicator