3
Cisco Unified Wireless IP Phone 7921G Accessory Guide
OL-11926-02
AC Power Supply
Figure1 AC Power Supply
Table 2 provides approximate battery charging times for the two battery types and power supply
configurations. You can check the battery charging state on the phone display.
.
Caution Use only Cisco specified AC power supplies for the Cisco Unified Wireless IPPhone 7921G.
1AC plug adapter—Insert into slot on power supply.
2AC power supply—Insert into AC outlet.
3Phone connection—Insert into slot at bottom of phone.
4Indicator LED—LED is red while battery is charging and turns green when
battery is charged.
Table2 Approximate Battery Charging Times
Battery Type
Power Supply
Connected to Phone
Power Supply Connected
to Desktop Charger
Phone Connected to Computer
with USB Cable
Standard 2 hours 2 hours 5 hours
Extended 3 hours 3 hours 7 hours