User's Manual

19
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.
Note
Suggestion 1: Turn off wireless mode if you are
not using it. This will conserve
battery power.
Suggestion 2: Disable the I/O card if Internet
access is not required.
Storage and Safety Precautions
Batteries should be stored in an open environment and placed where there is
no risk of accidental shorting or other damage. Although charged Li-Ion
batteries may be left unused for several months, their capacity may be reduced
due to back up and internal resistance. If this happens they will require
recharging prior to use. Li-Ion batteries may be stored at temperatures
between -4°F and 158°F (-20°C to 70°C).