Sony PCG-FXA63 User 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
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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Page 13