14SettingsUp to 3.5 hoursUp to 11 daysRechargeRecharge the battery when:—“Recharge battery” is displayed onthe handset,—“ ” flashes on the display, or—the handset beeps intermittently while it is in use.•If you DO NOT recharge the handset battery for more than 15 minutes, thedisplay will keep indicating “Recharge battery” and/or “ ” will continueto flash.Battery informationAfter your Panasonic battery is fully charged (p. 13):Operation Approx. battery lifeWhile in use(TALK)Up to 4.5 hoursWhile not in use (Standby)near the base unit*away from the base unitRecharge battery*Within about 10 feet (3 m)•Battery life may be shortened depending on usage conditions, such as viewingthe Caller ID Caller List or directory list, and ambient temperature.•Clean the handset and the base unit charge contacts with a soft, dry clothonce a month. Clean more often if the unit is subject to grease, dust orhigh humidity. Otherwise the battery may not charge properly.•If the battery is fully charged, you do not have to place the handset on the baseunit until “Recharge battery” is displayed and/or “ ” flashes. This willmaximize the battery life.•The battery cannot be overcharged.Standby mode (The handset is off the base unit.)The handset goes into the standby mode after you finish using thehandset (making/answering a call, viewing the Caller List or directoryitems etc.). The display is blank, but the handset can receive calls.The battery life is conserved in this mode.