Sony PCG-V505DC1 - Manual (Page 9)

Using AC Power
The supplied battery is not charged when you receive your computer. To use your computer immediately, use the supplied
AC adapter as the power source. While the computer uses AC power, it automatically charges the battery if it is inserted.
See
Using the Battery for more information on installing and using your battery.
 Connecting the AC adapter
 Turning on the computer
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