50 Using Batteries and Module Bay Devices
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2If the computer is connected to a docking device (docked), undock it.
See the documentation that came with your docking device for
instructions.
3Slide and hold the battery-bay latch release on the bottom of the
computer, and then remove the battery from the bay.
Installing a Battery
Slide the battery into the bay until the latch release clicks.
For more information about installing the second battery, see "About the
Module Bay" on page 53.