Справочник Пользователя для Nortel Networks 4027

Use the battery pack only as directed. Heat or cold reduces the 
performance and service life of the batteries. Handsets with hot or cold 
batteries can become temporarily out-of-service, even if the batteries are 
fully charged. Charge the batteries only with the DECT 4027 and 4070 
Handset charger supplied with the handset.

Observe the following guidelines 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.

•

The batteries attain maximum power output only after several 
charging and discharging cycles.

•

Do not leave the handset connected to the charger for more than a 
month 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. You can disable the display to accelerate battery discharge. 
For more information about configuring power save, see 

•

Extreme temperatures influence the charging capability of the 
batteries.