Aastra DT4X3 User Guid page 82

User Manual
Cordless Phones for MX-ONE™
18 Maintenance
18.1 Maintenance of Batteries
18.1.1 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, the LED
flashing orange, and the dialog window "Battery low. Charge now." appears.
The "Empty battery" icon is flashing when the battery has 5% or less remaining
capacity left. In addition; a warning signal sounds every second, the LED
flashing red, and the dialog window "Battery empty. Shutting down." appears.
During a call, only the corresponding battery warning signal will notify the user. The warning
signal cannot be silenced during a call. When not in call, the warning signal can be silenced by
pressing
18.1.2 Charge the Battery
Place the handset in the desktop charger or in the rack charger. The battery is being charged
when the LED on the handset is steady orange. When the battery is fully charged the LED will
be green.
An animated battery icon
its current charge and ending with the full charge. A filled battery icon
charged battery.
Note: Only use the prescribed chargers for charging.
18.1.3 Charge Spare Batteries
Spare batteries can be charged with a separate battery pack charger. It can charge six batteries at
the same time.
IMPORTANT: It is not permitted to charge intrinsically safe batteries using the battery pack
charger.
18.1.4 Replace the Battery
If the standby time for the handset 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
lid and is connected to the handset in such a way that no miss-contact is possible.
Note: Use the battery pack opener to untight the screws on the intrinsically safe handset.
1424-EN/LZT 103 089 B 2014-04-13
or .
is also shown in the display indicating charging by starting with
figure 6 on page 80. It is attached inside the battery
indicates a fully
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