50 Backup Battery
MX3 Reference Guide E-EQ-MX3RG-J-ARC
Backup Battery
The MX3 has a backup battery that is designed to provide limited-duration electrical power in the
event of Main Battery Pack failure. The Backup Battery is a 50 mAh Nickel Cadmium (NiCd)
battery that is factory installed in the unit. The need for recharging of the backup battery is
automatically detected and controlled by the MX3. The energy needed to charge the backup
battery comes from the Main Battery.
It takes several hours of operation before the Backup Battery is capable of supporting the
operation of the computer. The duration of Backup Battery life is dependent upon operation of the
MX3, its features and any operating applications.
The backup battery is replaced by LXE.
Note: When there is no external power supplied to the computer, the unit is powered by the
backup battery. When the backup battery is depleted, the BIOS parameters are reset to
their factory default settings.
Maintenance
Note: Make sure there is a fully charged main battery in the MX3 before running the Backup
Battery Discharge Utility.
The NiCd backup battery should be discharged completely once or twice a year. The Main Battery
Pack will fully charge the backup battery. This process will allow longer life for the Backup
Battery.
The backup battery is discharged by running the Battery Discharge Utility (BBDIS81.EXE) file
(located in the Utilities subdirectory on the MX3 – see Chapter 5, “Utilities”, for further
information). The discharge utility shows the progress of the discharging. At this time, the
program can be exited while continuing the discharge process. Normal use of the MX3 can
resume during the discharge, with the exception of Hot-Swapping the Main Battery. When the
backup battery is fully discharged, the MX3 will automatically stop the discharge process and
begin to recharge the backup battery.
DO NOT REMOVE THE MAIN BATTERY PACK from the MX3 until the backup battery is
completely discharged (with BBDIS81.EXE) -- in approximately 1 hour and recharged in
approximately 2.5 hours.
