Filter
Top Products
Chapter 3 Setting Up the Cisco Wireless IP Phone 7920
Providing Power to the Cisco IP Phone
3-12
Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 3.3 or Later
OL-3930-02
Related Topics
• Installing the Battery, page 3-9
• Charging the Phone Battery, page 3-12
• Using the Desktop Charger, page 3-13
Charging the Phone Battery
The Cisco Wireless IP Phone 7920 is powered by a rechargeable Lithium ion
battery. To charge the battery, follow these steps.
Procedure
Step 1 Connect the cable from the power supply to the outlet in the phone.
Step 2 Connect the power supply to an AC wall outlet as shown in Figure 3-3.
If the phone is turned off, the screen displays the message, “Battery Charging.”
When the battery is charged, “Battery Full” displays.
If the phone is turned on, the battery indicator bar blinks, displaying the current
power level. When the battery is charged, the indicator bar stops blinking, and
“Charging Complete” displays.
Step 3 When the battery is fully charged, you can disconnect the charger from the phone,
and unplug the power cord from the AC wall outlet.
Table 3-4 Charging Time Information
Battery Type
Power Supply
Connected to Phone
Power Supply Connected to
Desktop Charger
Standard 3.5 hr 6 hr
Extended 4.5 hr 8.5 hr