Unitech HT660 Wireless edition, Руководство по продукции

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HT660 Product Reference Guide
19
Chapter 3. Power system
Charging the Lithium-Ion Battery Pack
The HT660's batteries can be charged via the USB or serial communication cable,
or via the optional docking station - both using the included AC adaptor. Please
charge the battery for at least 4 hours per session to ensure a full charge.
Please note that the first time charge should be for at least 12 hours (see below).
Charging the Main and Backup Battery for the First Time
Note:
When first charging the HT660, please allow at least 12 hours to fully
charge both the main and backup batteries. When the HT660 arrives from the
factory the backup battery switch is in the OFF position in order to protect the
backup battery. Before first charging the HT660, make sure the backup battery
switch is moved to the ON position. The backup battery switch can be found
inside the main battery compartment. Data loss can occur if the backup battery
is not adequately charged - therefore it is imperative to ensure that the backup
battery switch is in the ON position before charging for the first time.
Note: A properly charged backup battery can store data for up to 72 hours
without power from the main battery. This is not recommended. Please make
sure an adequately charged main battery or AC power is to present and try not to
rely on the backup battery for other than unusual or emergency situations. To
prevent data loss due to backup battery failure (always a slim possibility), please
minimize the amount of time that the backup battery has to operate without the
main battery pack installed or while disconnected from AC power.
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.