To Insert A Second Battery Pack - Sony PCG-F640 VAIO User Guide (primary manual) User Manual

To insert a second battery pack

1 If another device is in the multipurpose bay, remove the device.
2 Insert the battery pack into the multipurpose bay.
If the battery is being used, the battery 2 indicator light turns on.
Second battery in multipurpose bay
3 Attach the weight saver to the computer to stabilize the battery pack. There
is a RELEASE lever on the bottom of the weight saver. Slide the lever
toward the front of the computer to lock the weight saver. See also "Using
the Weight Saver" on page 56.
Using weight saver for second battery cover
Using a Second Battery Pack
Multipurpose bay
Battery pack
Label side facing down
Battery pack
Weight saver
53