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Copyright 2007 unitech Electronics Co., Ltd. All rights reserved. unitech is a registered trademark of unitech Electronics Co., Ltd.
Chapter 4
Power System
Charging the Backup Battery for the First Time
The MR650 is equipped with a Lithium-Ion battery pack. After long storage periods, the unit may not
power-on without an external power adapter due to battery discharge. In this case, connect the MR650
to the power adapter and recharge the unit for about 22 hours to fully charge the battery.
NOTE:
The MR650 can operate for approximately two hours (depending on the hardware con-
figuration and backlight usage) or can store data for three days when there is no exter-
nal power. Operating with the backlight at 100% brightness and using the finger print
utility consumes more power. Therefore, when the MR650 is disconnected from exter-
nal power, the unit will enter sleep mode and turn off the backlight. When you tap the
touch panel, the backlight is set to minimum brightness to saving battery power.
Checking the Battery Status
If the main battery level becomes low in the course of normal
use, a status icon
appears on the device taskbar indicat-
ing low or very low battery status. If the battery level reaches
low status, the device will enter suspend mode; if the battery
level reaches very low status, the device will enter deep
sleep mode. In this case, you have about 72 hours to
recharge your device after which you risk losing all data on
your device’s internal memory.
When the backup battery is low, an icon
appears in the
Taskbar indicating that you should recharge the backup bat-
tery as soon as possible.
Check the Power Properties by tapping
→
Settings
→
Control Panel
→
Power
.
CAUTION!
When there is no external power
and the backup battery icon
appears in the system tray, you
should backup the data from
MR650 immediately.
Chapter 5
