5Talk and Standby TimesBattery operation times depend greatly on how you usethe batteries, as well as on the coverage of the networkand network parameters set by the cellular serviceprovider.To Discharge the BatteryA battery lasts longer and performs better if you fullydischarge it from time to time!To discharge the battery, either leave your phoneswitched on until it turns itself off or use the batterydischarge feature of any approved accessory availablefor your phone.Note: Do not attempt to discharge the battery by anyother means.Battery LowYou get this message and awarning tone when the batterycharge is low and only a fewminutes of talk time remain.When the battery charge is too low for the phone tooperate, RECHARGE BATTERY is displayed and awarning tone is given. After about 10 seconds, thephone automatically switches itself off.Note: If Silent Service has been selected, no audiblewarning tones are given.Charge the battery as described earlier in this section.Battery Talk Time Standby TimeSlim 800 mAhNiMH (BMT-1L) 1 hour 40 minutes 21 hoursExtended 800 mAhNiCd (BKL-2S) 1 hour 40 minutes 21 hours