NEC 750C User Manual page 27

Turn the unit over and locate the battery cover lock on
4.
the bottom of the MobilePro. Slide the lock to the un-
locked position.
5. Using a small screwdriver, remove the screw and sub-
battery bay cover.
2-14 Getting Familiar with Your MobilePro 750C
Locked Position
Releasing the Battery Cover Lock
Removing the bay cover