Unitech HT682 User Manual

Chapter 3
Power system
Charging the Lithium-Ion Battery Pack
The HT682'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 16 hours (see the description below).
Charging the Main and Backup Battery for the First Time
When first charging the HT682, please allow at least 16 hours to fully charge both the main and
backup batteries. When the HT682 arrives from the factory the backup battery switch is in the
OFF position in order to protect the backup battery. Before first charging the HT682, 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.
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 presented 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.
17

Unitech HT682 Specifications

General

Certification	CE, FCC, BSMI, VCCI, CCC, SRRC, RoHS
Product color	Black
LED indicators	Yes
Phone function	-
Keyboard layout	Alphanumeric
Linear (1D) barcodes supported	Codabar, Code 11, Code 128, Code 32, Code 39, Code 93, EAN-13, EAN-8, MSI, PLANET, POSTNET, U.P.C.
International Protection (IP) code	IP65
2D (matrix & stacked) barcodes supported	Aztec Code, Codablock, Code 49, Composite Codes, Data Matrix, MaxiCode, MicroPDF417, PDF417, QR Code
Display diagonal	2.8 \
Display resolution	- pixels
Speakers	Mono
ROM capacity	512 MB
Internal memory	0.512 GB
Internal memory type	SDRAM
Compatible memory cards	SDHC
Maximum memory card size	32 GB
Processor family	OMAP AM3703
Processor frequency	0.8 GHz
USB 2.0 ports quantity	1
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	5 - 95 %
Battery capacity	- mAh
Data network	EDGE, GPRS, GSM, HSDPA, UMTS
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth version	2.1+EDR
GSM bands supported	850, 900, 1900, 2100 MHz
Security algorithms	AES, EAP-FAST, EAP-TLS, EAP-TTLS, PEAP, WEP, WPA, WPA2
Operating system installed	Windows Embedded Compact Professional 6.0 R3

Weight and Dimensions

Depth	30 mm
Width	55 mm
Height	170 mm
Weight	- g