NEC VERSA LX Manual page 36

4. Continue to hold the battery release latch as you slide the battery out
of the system.
5. Insert the new battery as follows:
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6. Turn the system over.
2-10 Getting Started
Removing the battery
Locate the alignment groove on the edge of the battery.
Locate the alignment groove inside the battery bay.
Align the grooves on the battery with the grooves in the bay.
Slide the battery into the bay until securely locked into place.
Inserting the battery pack