Chapter 8: Maintenance
Maintenance
Maintenance of Batteries
Battery Warnings
The "Low battery" icon (
) is displayed when the battery has 10% or less remaining capacity left.
In addition; a warning signal sounds every minute, and the system displays the message
"Battery low. Charge now."
.
The "Empty battery" (
) icon is flashing when the battery has 5% or less remaining capacity left.
In addition; a warning signal sounds every second, and the system displays the message
Battery empty. Shutting down
.
During a call, only the corresponding battery warning signal notifies the user. The warning signal
cannot be silenced during a call. When not in call, the warning signal is silenced by pressing the
Sound off
(
) key or
.
Charge the Battery
Place the handset in the desktop charger or in the rack charger.
The system displays an animated battery icon
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.
Charge Spare Batteries
Spare batteries can be charged with a separate battery pack charger. It can charge six batteries at
the same time.
Caution:
It is not permitted to charge intrinsically safe batteries using the battery pack charger.
Replace the Battery
If the standby time for the handset becomes to short, the battery should be replaced with a new
one. For information about new batteries, please contact your system administrator or your
August 2019
Using 3735 DECT handsets with Communication Manager and IP Office
118