11CommissioningCommissioningCharge the battery before using your handset for the first time.Maximum battery performance is first reached after three to five charging and discharging cycles.Place the handset in the charger cradle regularly to achieve optimum battery charge.After initial charging of the battery your handset is ready for use, calls can be received or made fromthis handset.Charging and durationsCharging time in the charger cradle (empty battery):Full capacity: 2 hours (standard battery), 4 hours (power battery).Charging time with USB charging device:Full capacity: 4 hours (standard battery), 8 hours (power battery).Talk time:Standard battery - up to 15 hours (when fully charged) for North America.Standard battery - up to 12 hours (when fully charged) for other countries.Power battery - up to 30 hours (when fully charged) for North America.Power battery - up to 24 hours (when fully charged) for other countries.Standby time:Standard battery - up to 105 hours (when fully charged) for North America.Standard battery - up to 110 hours (when fully charged) for other countries.Power battery - up to 190 hours (when fully charged) for North America.Power battery - up to 200 hours (when fully charged) for other countries.NotePoor radio signals (far away from the system base station) reduce the handset standby and talktimes. High loudspeaker or ringer volume, frequent key activation and display illumination as well asactive vibration alarm andBluetooth operation are features that can specifically shorten standbyand talk times.