Low Battery Warning
Low Battery Warning
It is recommended that the main battery be removed and replaced when it’s energy depletes. When the Low Battery Warning
appears do an orderly shut down of the mobile device, minimizing the operation of any optional equipment and insuring any
information is saved that should be saved. When the mobile device is in an ON state, a low battery warning dialog box appears
on the display and the Batt-M LED illuminates red. An uninterrupted external power source (wall AC adapters or DC/DC
converters) transfers power to the mobile device internal charging circuitry which, in turn, recharges the main battery and
backup battery.
Note: Once you receive the Low Battery Warning, you have approximately 5 minutes to perform an orderly shutdown and
replace the main battery before the unit powers off. The Low Battery Warning will transition to Critical Suspend before the
MX3X powers off.
Critical Suspend State
The Critical Suspend state or mode can only be entered because of a main battery Power failure. A main battery Power failure
can occur because the battery’s energy has been depleted or the battery has been removed.
When the mobile device is in the Critical Suspend state the main battery LED illuminates, the System LED blinks red, all
peripherals are shut down, the CPU clock is stopped, and power is removed from the PCMCIA cards.
The operating system is saving the state prior to the backup battery failing and cannot be used. If a new fully charged main
battery is installed before the backup battery fully depletes the operating system will transition to the Suspend state. To
resume operation tap the Power key.
Backup Battery
The MX3X has a backup battery that is designed to provide limited-duration electrical power in the event of main battery 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 operating system. 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 MX3X. The duration
of backup battery life is dependent upon operation of the MX3X, it’s features and any operating applications. The backup
battery is replaced by LXE.
Note: An uninterrupted external power source (wall AC adapters or DC/DC converters) transfers power to the MX3X’s
internal charging circuitry which, in turn, recharges the main battery and backup battery.
Backup Battery Maintenance
Note: Make sure there is a fully charged main battery in the MX3X before running the backup battery Discharge Utility.
The backup battery can be discharged and charged while the MX3X is receiving external power through the Power Jack
or from a powered cradle.
The NiCd backup battery should be discharged completely once or twice a year. The main battery will fully charge the backup
battery. This process will allow longer life for the backup battery.
The backup battery is discharged by selecting Start | Settings | Control Panel | Battery and tapping the “Discharge” button. 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 MX3X can resume during the discharge, with the exception of Hot-Swapping the main battery.
When the backup battery is fully discharged, the MX3X will automatically stop the discharge process and begin to recharge the
backup battery.
DO NOT REMOVE THE MAIN BATTERY from the MX3X until the backup battery is completely discharged – in
approximately 1 hour and recharged in approximately 2.5 hours.
E-EQ-MX3XRG-W-ARC [ 24 ] MX3X Reference Guide
