Getting started22Important battery informationUse the battery pack only as directed. Heat or cold reduces theperformance and service life of the batteries. Handsets with hot or coldbatteries can become temporarily out-of-service, even if the batteries arefully charged. Charge the batteries only with the DECT 4027 and 4070Handset charger supplied with the handset.Charging guidelinesObserve the following guidelines when you charge your handset:• Charge the battery for at least 6 hours before you use the handset forthe first time. This protective measure extends the service life of thebatteries.• The batteries attain maximum power output only after severalcharging and discharging cycles.• Do not leave the handset connected to the charger for more than amonth without using it.• You can charge and discharge the batteries hundreds of times, buteventually 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 thebatteries by leaving the handset off the charger and switched on, untilthe handset switches itself off. Use only this method to discharge thebatteries. You can disable the display to accelerate battery discharge.For more information about configuring power save, see “Configuringpower save” (page 167).• Extreme temperatures influence the charging capability of thebatteries.
