AASTRA DT4x2 for MX-ONE User Guide EN - Manual (Page 117)

117 DT412/DT422/DT432
Installation
Battery
All batteries are rechargeable.
Charging the battery
The battery requires charging when the Battery icon in the display
is empty.
Place the phone in the charger. A beep indicates connection with
the charger. The charging status is shown by the Battery icon in the
display. A fully charged phone is indicated by a filled Battery icon. If
the phone is switched off when placed in the charger, it will start up
automatically within 2 minutes.
Note: If a call is connected when the phone is placed in the
charger, the call will be disconnected.
Removing the battery
The battery is fastened by a screw and two hooks. To remove the
DT412 and DT422 battery, use a small coin and turn the screw to
horizontal position. To remove the DT432 battery, use the key
which is delivered with the phone and turn the screw to horizontal
position. Remove the battery by pulling the screw. When fastening
the battery again the screw has to be in horizontal position.
Note: Avoid using a screwdriver as it may damage the
screw.
Battery handling
The battery contains environmental polluting material. If damaged,
return it to a collecting point.
Note: Only use the charger that is delivered with your
phone to charge the battery.