Sony VAIO VPCYB SERIES - Manual (Page 21)

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Getting Started >
Using the Battery Pack
To remove the battery pack
!
You will lose all unsaved data if you remove the battery pack while your computer is on and not connected to the AC adapter.
1 Turn off the computer and close the LCD screen lid.
2 Slide the battery LOCK switch to the unlock position.
3 Slide and hold the battery RELEASE latch, put your fingertip underneath the tab on the battery pack, and lift the battery
pack in the direction of the arrow, and then slide it away from the computer.
!
This computer is designed to operate only with genuine Sony battery packs.