Maintenance
Maintenance of Batteries
Maintenance
This chapter describes how to maintain handsets, with a focus on battery replacement and
charging, as well as it gives recommendations on how to keep the handset charged longer.
Maintenance of Batteries
Low Battery Indication
If the battery level is low, charge the battery or change it to a fully charged one as soon as possi-
ble.
The warning signal cannot be silenced during a call. When not in a call, the warning signal can
be silenced by pressing and holding the
Sound off
key
or the mute button.
NOTICE:
The warning signal when the battery is low can be set to one of the
three different modes:
Sound repeatedly
,
Sound once
, or
Sound off
. For the
details, refer to the Configuration Manual, Unify OpenScape WLAN Phone WL4.
The
Low battery
icon is displayed when the battery has 25 to 10% remaining
capacity.
A low battery level is also indicated by a warning signal that sounds every minute
and the
Battery low. Charge now.
notification.
The
Very low battery
icon is displayed when the battery has 10 to 7% remaining
capacity.
A very low battery level is also indicated by a warning signal that sounds every
minute and the
Battery very low. Charge now.
notification.
The
Empty battery
icon is flashing when the battery has 7% or less remaining
capacity.
An empty battery also indicated by a warning signal that sounds every second
and the
Battery empty. Shutting down.
notification.
Charging Methods
The handset has a rechargeable battery that can be charged separately from the handset. To
charge it, use the Battery pack charger. If you want to charge the handset together with battery,
do it either with a Desktop charger or using a Charging rack.
NOTICE:
Use manufacturer-provided chargers only.
Charge the Handset
1)
Place the handset in the Desktop charger or in a Charging rack. Push the handset into the
charger to fully insert it. If the handset is correctly inserted, the charging screen (screen
saver) appears showing the owner ID, current time and the white battery icon indicating the
ongoing charging.
2)
When the green battery icon appears on the screen, the battery is fully charged.
3)
To remove the handset from the charger, tilt the handset towards you and lift it upwards.
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