Sony PCG-GRS100 - Manual (Page 16)

VAIO Computer Quick Start
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3 Slide the weight saver in the direction of the arrow until it clicks into place.
The weight saver stabilizes the battery.
4 Make sure the Release lever is in the LOCK position.
To remove the second battery
1 Make sure the Battery 2 indicator is off and the Battery 1 indicator is on or
the computer is connected to AC power. If the Battery 2 indicator is on:
1 Double-click the CPU icon . The PowerPanel dialog box appears.
2 On the Battery tab, click Primary Battery in the Battery Switch box.
3 Click OK.
Inserting the Weight Saver
Locking the Weight Saver Release Lever
Battery
Weight saver
Release switch