Unitech HT680, User Manual

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18
Environment Consideration for Charging
It is important to consider the environment temperature whenever you are
charging the Lithium-Ion battery pack. The process is most efficient at normal
room temperature or slightly cooler. It is essential that you charge batteries
within the stated range of -5°C to 50°C. Charging batteries outside of the
specified range could damage the batteries and shorten their charging life
cycle.
Power Status Indication
When the "Main Batteries Very Low" icon
appears, charging the main battery pack as
soon as possible is highly recommended in
order to avoid system shutdown at an
awkward moment.
“
Backup Battery Low” Icon
When the "Backup Battery Low" icon appears, it indicates that the backup
battery is low and needs to be charged.
Charging the Lithium-Ion Battery Pack
Automatic shutdown of the HT680
The HT680 will enter idle mode when there is no task, or all tasks are waiting
for input. In default setting, the HT680 will automatically turn itself off if it
remains idle for 3 minutes and when there is no external charging power
applied. Pressing the power button will return the HT680 to the same point at
the time of automatic shutdown.
Do not leave the terminal for a long time in the charging cradle and do not
charge the battery with a cable long, which will shorten the battery life and
cause battery expanding/ballooning. The unit should not be subject to very
high temperature, excessive moisture, and direct heat. Avoid the battery from
being fully charged and staying in a high temperature environment. Avoid