NEC MobilePro 880 - Manual (Page 52)

Introducing the NEC MobilePro 2-15
1. Save your data, turn off unit power, and close the display
panel. Disconnect any cables attached to the unit, such as
the serial cable.
Note: If you receive messages indicating
that both the main battery and the backup battery
are very low, immediately connect the AC
adapter to charge both batteries.
2. Have a Lithium-Ion battery pack available.
3. Remove the battery pack as follows:
T Locate the release latch on the bottom of the system.
T Slide the release latch in the direction of its arrow and
hold it.
T Remove the battery from its bay.
Removing the battery pack
A – Battery connectors B - Battery release latch C - Lithium-Ion battery pack