Charge The Spare Battery - Avaya 3920 User Manual

2 Installing the Telephone

Charge the Spare Battery

It is recommended that you have a spare battery always charging to protect
against complete battery discharge. The charger unit is equipped to charge the
spare battery with or without the handset in the front slot. See
"Accessories" for information on ordering a spare battery.
Slide the spare battery into the rear slot in the charger unit until the
1
retaining clip snaps over the top of the battery.
Ensure that the Battery indicator lights blue. If it does not, make sure that
2
the AC adapter is plugged in and that the spare battery is making good
contact with the Charger Unit.
Charge the spare battery for 15 to 20 hours.
3
28 Charge the Spare Battery
Figure 23: Charge Spare Battery
User's Guide
Appendix C,