Slide the release lever (2) to the Unlock position and slide the battery away from the computer.
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You can remove the battery pack without turning off the computer if it is connected to the mains voltage (AC adapter).
Close the cover before you remove the battery pack.
You may lose data if you remove the battery pack while the computer is on and not connected to the AC adapter or if you remove the battery while
the computer is in Standby mode.
If the indicator of the battery pack you are going to remove, is on, right-click the battery icon in the system tray and click the Switch Battery option