Maintenance; Charge The Battery; Charge Spare Batteries; Replace The Battery - Avaya 3749 User Manual

Maintenance

Charge the Battery

Place the telephone in the desktop charger or in the rack charger. The battery is being charged
when the LED on the telephone is steady orange. When the battery is fully charged the LED will
be green.
An animated battery icon is also shown in the display indicating charging by starting with
its current charge and ending with the full charge. A filled Battery icon indicates a fully
charged battery.
Note:
Only use the prescribed chargers for charging.
Note:
!
CAUTION:
CAUTION:
On the 3749 telephones, battery charging or replacement is NOT permitted in a
hazardous area. When charging the EX classified handset, it is only permitted to
use a charger marked with DC3-CAAB/1A (or greater), DC4-CAAB/3A (or
greater) or CR3-CAAB/2A (or greater) on the label. It is not permitted to charge
the EX battery pack alone.

Charge Spare Batteries

Spear batteries can be charged with a separate Multiple Battery Charger. It can charge six
batteries at the same time.

Replace the Battery

If the standby time for the cordless telephone becomes too low, the battery should be replaced
by a new one. Please contact your system administrator or your supplier, for information about
new batteries. Attach the battery as described in the illustration below. The battery is easy to
replace. It is attached inside the battery lid and is connected to the cordless telephone in such a
way that no miss-contact is possible.
For 3749 phones, a specific tool is required and specific environmental conditions need to be
considered before replacing the battery.
Avaya 3740 and 3749 DECT Telephone - User Guide
Maintenance
91
11/2010