Getting started
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fully charged. Charge the batteries only using the DECT Handset charger
supplied with the handset.
Charging guidelines
Observe the following when you charge your handset:
• Charge the battery for at least 6 hours before you use the handset for
the first time. This protective measure extends the service life of the
batteries.
Note: The batteries attain maximum power output only after several
charging and discharging cycles.
• Do not leave the handset inserted into the charger for more than 30
days without using it.
• You can charge and discharge the batteries hundreds of times, but
eventually they wear out. If the operating time (talk and standby time)
becomes significantly shorter than usual, replace the batteries.
• To maintain optimum operating time, periodically discharge the
batteries by leaving the handset off the charger and switched on, until
the handset switches itself off. Use only this method to discharge the
batteries. If you want to accelerate the discharge of the battery, you
can enable the display. For more information about configuring power
save, see “Configuring Power save” (page 195).
Note: Extreme temperatures influence the charging capability of the
batteries.
Attention: Use a CPC N0162957 charger if you have an Avaya 4027
or 4070 DECT Handset, and a CPC N0206072 charger if
you have an Avaya 4075 DECT Handset.