Sony VGN-P21S/W User Manual page 18

Getting Started >
Using the Battery Pack
3 Fit the battery pack into the battery compartment.
The battery pack should be level with the bottom of the computer.
4 Slide the battery pack toward the front of the computer until it clicks into place.
5 Slide the battery LOCK switch outward to secure the battery pack on the computer.
✍
When your computer is directly connected to AC power and has a battery pack installed, it uses power from the AC outlet.
!
Certain rechargeable batteries do not meet Sony quality and safety standards. For safety reasons this computer only functions with genuine Sony
battery packs designed for this model. If an unauthorized battery pack is installed, the battery will not be charged and the computer will not function.
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