Phone Battery Charging; Spare Battery Charging; Prepare The Power Adapter - Cisco 8821 User Manual

Phone Battery Charging

c) Press the center of each side of the cover until it clicks in place.
d) Check that the cover is flush with the phone.
Phone Battery Charging
You can charge the battery using any of the following options:
• USB cable—You can charge the phone with an AC power adapter or your computer.
• Desktop charger—You can use the phone and charge it at the same time.
• Multicharger—You can charge several phones at the same time.
Explosion Hazard: Do not charge the phone battery in a potentially explosive atmosphere. Statement 431
Warning
The battery takes about 3 hours to charge in the AC power adapter, desktop charger, or multicharger. It takes
about 6 hours to charge using the USB cable and your computer.
Related Topics
Cisco Wireless IP Phone 8821 and 8821-EX Multi Charger, on page 82
Cisco Wireless IP Phone 8821 and 8821-EX Desktop Charger, on page 79

Spare Battery Charging

If you require longer talk times, you will find it useful to have a spare, charged battery. You can charge a
spare battery in the desktop charger or multicharger.
Explosion Hazard: Do not charge the spare battery in a potentially explosive atmosphere. Statement 431
Warning
The spare battery takes about 3 hours to charge in the desktop charger or multicharger.
Related Topics
Cisco Wireless IP Phone 8821 and 8821-EX Multi Charger, on page 82
Cisco Wireless IP Phone 8821 and 8821-EX Desktop Charger, on page 79

Prepare the Power Adapter

The power adapter for your phone is compact. Before you use the power adapter, you have to unfold the
prongs. After you use the adapter, you can fold in the prongs.
The power adapter for your region may also require an additional clip to allow the adapter to be plugged into
the electrical outlet.
Cisco Wireless IP Phone 8821 and 8821-EX User Guide
24
Phone Setup