User Guide
After Sales
Technical Documentation
Handsfree Desktop Charger CHH–7
Original, 11/94Page 6
Basic Specifications
Table 2. Basic Specifications
Power Consumption 13W max.
Input Voltage Range 13.5V to 21.0V
Battery Charger: Output Voltage
Output Current
10.0V to 13.0V
730mA to 870mA
Maximum Charging Time (empty battery): BTH–8S (400mAh): 45min
BTH–8H (500mAh): 55min
BTH–8SM (800mAh): 70min
BTH–8HM (1100mAh): 100min
Maximum Discharging Time (full battery): BTH–8S (400mAh): 3h 30min
BTH–8H (500mAh): 4h 20min
BTH–8SM (800mAh): 7h
BTH–8HM (1100mAh): 8h 40min
Operating Temperature +5C to +55C
Charging Temperature +5C to +45C (40C when fitting battery)
Speaker Output Power nominal: 1W / 8ohm
External Main Dimensions 43mm (H) x 167mm (W) x 113mm (D)
Weight 360g
NOTE: To ensure the battery is fully charged, it is recommended to
continue charging for 2 to 3 hours after a fast charge has
been completed.
Technical Specifications
Modes of Operation
Power Off Mode: The unit receives no power at the DC–
connector.
Standby Mode: The unit receives the supply voltage at
the DC–connector. The processor is
running but because there isn’t a phone
or spare battery in the cradle, the
charger remains off and the audio
functions are inactive.
Active Mode: The telephone or spare battery is in the
cradle so the charging functions are
active. Normally the handsfree speaker
is muted. During a call and during the
key beeps or alarming tones the
speaker and corresponding audio
switches are open.