Mitel 5603 Wireless Handset User Guide
Maintenance
Maintenance of Batteries
Battery Warnings
The "Low battery" icon appears when the battery has 10% or less remaining capacity left. In addition; a warning signal sounds every minute, the LED flashing orange, and the 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 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 
.
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 
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.
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 the illustration below. The battery is easy to replace. It is attached inside the battery lid and is connected to the handset in such a way that no
52