Power Supply For Charging The Battery - Cisco 7920 Administration Manual

Chapter 3 Setting Up the Cisco Wireless IP Phone 7920
Note

Power Supply for Charging the Battery

Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 3.3 or Later
OL-3930-02
The media access control (MAC) address for each Cisco Wireless IP Phone 7920
appears on a printed label on the back of the phone underneath the battery.
Related Topics
Power Supply for Charging the Battery, page 3-11
•
• Charging the Phone Battery, page 3-12
Using the Desktop Charger, page 3-13
•
The AC adapter shown in
quickly. To use the adapter, plug it into a wall outlet, and insert the connector into
the base of your Cisco Wireless IP Phone 7920 or to the back of the desktop
charger. You can use the phone while the battery is being charged.
Figure 3-2 Power Supply
The charging time for the two types of batteries is shown in
charging status on the phone display or on the front of the desktop charger. You
can stop charging the battery when the battery is fully charged, and you can leave
the batteries in the charger for extended time periods will no ill affects.
Lithium ion batteries can be partially charged without shortening the battery life,
because they have no memory. Batteries should handle up to 4000 recharges.
Providing Power to the Cisco IP Phone
Figure 3-2 enables you to charge your phone battery
Table 3-4. Check the
3-11