Sony PCG-F640 - Manual (Page 54)

VAIO Notebook User Guide
54
To charge the second battery pack
Keep the battery pack in the computer while it is connected to AC power. The
battery indicator flashes while the battery is charging. See also “To charge the
battery pack” on page 27 for more information.
To remove the second battery pack
If you attach two battery packs, you can remove either of them without shutting
down the computer. When removing one battery pack, make sure that the other
battery pack’s indicator light is on. If the indicator light of the battery pack you
are removing is on, right-click the battery icon on the task tray and click the
“Switch discharge battery” option.
Charging the second battery
✍
To determine the amount of time the battery lasts, see “Displaying Battery
Information” in the online manual “Customizing Your VAIO® Notebook” .
Second battery pack
(optional)
Battery indicators
Battery pack (supplied)