NEC MobilePro 790 - Manual (Page 43)

2-12 Introducing the NEC MobilePro
Battery Replacement
Note the following when replacing batteries:
!
If the main battery becomes weak, the MobilePro automatically turns
off. Recharge or replace the main battery immediately if the power
goes off.
!
The MobilePro has a built-in backup battery that maintains your data
for several hours whenever the main battery is depleted or removed.
The backup battery is recharged whenever the unit is connected to an
AC power source.
!
If you fail to replace a depleted main battery for an extended period of
time and the back-up battery is weak, the contents of the MobilePro
memory and all user data may be lost.
Removing and Inserting the Battery Pack
Should you notice the life of a charged battery pack is short, replace it
with a new one. Follow these instructions to replace a battery pack.
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.
You cannot use your MobilePro when the battery lock is in the unlocked
position. The system displays an error message.
2. Have a Lithium-Ion battery pack available.
3. Remove the battery pack as follows:
!
Locate the battery lock and release latch on the bottom of the
system.
!
Slide the lock to the unlocked position in the direction of the
arrow as indicated in the following figure.
!
Slide the release latch in the direction of its arrow, as indicated in
the following figure, and hold it.
!
Remove the battery from its bay.