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Spectralink 7520 and 7540 User Guide
14158600 Version 9.0
September, 2013
11
If the handset is turned on when charging, the display shows the blue charging icon
in the
status bar. The charging icon is replaced by the green fully charged icon
, when the battery is
fully charged (when handset is removed from charger, the charging icon disappears). The handset
will not vibrate. Auto answer is inactive. The handset reacts normally for incoming calls.
It is necessary to recharge battery when display shows the battery low icon
, or if the handset
cannot be turned on.
Battery Capacity
The capacity of the battery depends on the use of backlight, Bluetooth and talk time.
Battery capacity in active mode:
•
Spectralink 7520: up to 24 hours active talking time. Spectralink 7540: up to 24 hours active
talking time.
Battery capacity in standby mode:
•
Spectralink 7520: 200 hours when display backlight is turned off. Spectralink 7540: 130 hours
when display backlight is turned off.
•
Spectralink 7520: 100 hours when display backlight is set at dimmed. Spectralink 7540: 60
hours when display backlight is set at dimmed.
Battery capacity with Bluetooth turned on and headset connected, in active mode:
•
Spectralink 7540: up to 16 hours talking time.
Battery capacity with Bluetooth turned on and headset connected, in standby mode:
•
Spectralink 7540: up to 119 hours.
Battery Disposal
Lithium lon batteries must be disposed of properly. Do not dispose of the batteries in office or
household waste.
Lithium lon batteries are recyclable. You can help preserve the environment by returning your
unwanted batteries to your nearest recycling center for recycling or proper disposal.
Contact your system administrator for more information about battery disposal and recycling
centers in your local area.