Sony PCG-GRX580P - Manual (Page 38)

To remove the second battery pack
If you attach two battery packs, you can remove either of them without shutting down the notebook. When removing one
battery pack, make sure that the other battery pack's indicator is on. If the indicator of the battery pack you are removing is
on, right-click the battery icon on the taskbar and click the "Switch discharge battery" option.
1. To remove the battery pack, first slide the multipurpose bay Release switch in the direction of the arrow to
unlock the weight saver.
Multipurpose Bay Release Switch
2. Remove the weight saver, and then pull out the battery pack.
3. Reinsert the weight saver. See Using the Weight Saver for more information.
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