NEC MobilePro 880 - Manual (Page 17)

Getting Started 1-9
3. Power on the NEC MobilePro using the Power button at
the top right corner of the keyboard.
Using AC power saves battery life when you are on the go
and ensures that the backup battery maintains its charge and
helps prevent data loss.
!
CAUTION
If you power off, then quickly power on the NEC
MobilePro, your system may erroneously report
the presence of CompactFlash cards.
In addition, repeatedly powering off and quickly
powering on, may cause data loss. NECC
recommends that you wait ten seconds after
powering off, before powering on the NEC
MobilePro.
Continue working with the NEC MobilePro 880 as it charges
and leave it connected to AC power after the light turns
green.
Note: Before using the system for the first
time, allow ten hours for both the main and the
backup batteries to fully charge, even if the
indicator on the front of the MobilePro lights
green before the full ten hours are passed.