21
Chapter 4
Power System
Charging the Battery for the First Time
The
MT680-AMWTAG
is equipped with a Lithium-Ion battery. The
MT680-AMWTAG
may not power on
after long storage periods without an external power adapter, due to battery discharge. In this case, connect
the
MT680-AMWTAG
to the power adapter and recharge the device for about 12 hours.
NOTE:
The
MT680-AMWTAG
can operate for approximately two hours (depending on the hard
-
ware configuration and backlight usage) or can store data for 24 hours without external power.
Operating the
MT680-AMWTAG
’s backlight screen at 100 percent brightness consumes the
most power. Therefore, when the
MT680-AMWTAG
disconnects from its external power source
it will enter into sleep mode, which automatically turns off the backlight. Tapping the touch-
screen will set the backlight screen to minimum brightness, saving battery power.
Checking the Battery Status
Check the Power Properties by tapping
Start
→
Settings
→
Control Panel
→
double-tap
Power
.
This status icon
appears on the
MT680-AMWTAG
’s task-bar indicating the low
battery status. The
MT680-AMWTAG
will enter
suspend mode when the battery level reaches
Low status, and the
MT680-AMWTAG
will enter
sleep mode when the battery level reaches Very
Low status. There is a 12 hour time window to
recharge the
MT680-AMWTAG
, but after this
time period there is a strong risk of losing all the
MT680-AMWTAG's internal memory
This icon
appears in the taskbar when the bat-
tery is Very Low and the battery should be
recharged as soon as possible.
CAUTION!
Immediately backup the
MT680-AMWTAG
’s data or risk losing
everything when there is no external
power, and the
Main Batteries Very
Low
warning window appears.