Sony PCG-FXA63 - Manual (Page 13)

Frequently asked questions
How do I know when the battery is charged?
To determine the remaining battery charge, see "Displaying Battery Information" in the online VAIO ® Computer User Guide
for more information.
When is the computer using AC power?
When the computer is directly connected to the AC adapter, it uses AC power, even if a battery is installed.
When should I recharge the battery?
 When the battery level falls below 10 percent.
 When both the battery and power indicators blink.
 When you have not used the battery for a considerable amount of time.
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