DT390
Aastra Sales partner for information on new batteries. The battery is connected
to the cordless telephone in such a way that no miss-contact is possible.
To replace the battery, do the following, also see Figure 10 on page 90:
1
2
Figure 10 Battery replacement
1. Open the battery compartment and remove the battery.
2. Disconnect the battery cable, and replace with a new battery.
Note: After replacing the battery with a new one, the battery icon can indicate
an empty battery even though it is fully charged. Charge the battery for
at least one hour to get the correct reading.
To avoid fatigue of the phone's battery connector, use the charger instead of
repeatedly replacing an empty battery with a new one.
21.5 Chargers
21.5.1 Desktop Charger
There are two desktop chargers available, one basic and one advanced, see
Figure 11 on page 91.
Basic
Charging only
Advanced
Charging, software download, and synchronizing of
parameters.
90
1424-EN LZT 103 091 Uen A1 2008-10-27
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