Sony Vaio PCG-GR114EK Instruction & Operation Manual page 27

Using your notebook
Removing the second battery pack
To remove the second battery pack, proceed as follows:
1 Slide the multi-purpose bay release lever on the bottom of the computer in the direction of the arrow.
2 Remove the weight saver.
3 Pull out the battery pack
4 Reinsert the weight saver.
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