Using The Battery Pack - Sony PCG-K215B Hardware Manual

Using the battery pack

Depending on your model, you can use one or two batteries as a source of power. Additional battery packs are available as a
separate option. The battery pack supplied with your computer is not fully charged at the time of purchase.
Inserting the battery pack
To insert the battery pack, proceed as follows:
1
Open the cover of the battery bay.
2
Insert the battery pack with the label facing up into the battery bay of the computer.
3 Close the cover of the battery bay until it clicks.
✍
When the computer is directly connected to AC power and has a battery pack inserted in the battery bay, it uses power from the AC outlet.
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Using your VAIO computer