113 BATTERY CHARGING■ Optional battery case (BP-263)When you would like to use the optional battery case (BP-263),install 6 × AA (LR6) size alkaline batteries, as shown below.qRemove the battery case if it is attached. (p. 2)wInstall 6 × AA (LR6) size alkaline batteries.• Install only alkaline batteries.• Be sure to observe the correct polarity.eAttach the battery case. (p. 2)CAUTION:• When installing batteries, make sure they are all thesame brand, type and capacity. Also, do not mix newand old batteries together.• Never use batteries whose insulated covering is damaged.• Never incinerate used battery cells since internal batterygas may cause them to rupture.• Never expose a detached battery case to water. If the bat-tery case gets wet, be sure to wipe it dry before using it.• Keep battery contacts clean. It’s a good idea to cleanbattery terminals once a week.■ Battery informationD Battery lifeBattery pack Voltage Capacity Battery life* 1BP-263 Battery case forAA (LR6) × 6 alkaline —*2BP-264 7.2 V 1400 mAh (typ.) VHF 11.5 hrs.UHF 10 hrs.BP-265 7.4 V 1900 mAh (min.)2000 mAh (typ.)VHF 16 hrs.UHF 13.5 hrs.*1 When the power save function is set to “Auto,” and the operatingtime is calculated under the following conditions;TX : RX : standby = 5 : 5 : 90*2 The average operating time depends on the alkaline cells used.Even when the transceiver power is OFF, a small currentstill flows in the radio. Remove the battery pack or casefrom the transceiver when not using it for a long time. Oth-erwise, the battery pack or installed batteries will becomeexhausted.Indication Battery conditionThe battery pack (BP-264/BP-265) or battery case(BP-263) has ample capacity.The battery pack (BP-264/BP-265) is nearing exhaus-tion.(blinks)The battery pack or battery case is exhausted. Charg-ing the BP-264/BP-265 or replacing the batteries in theBP-263 is necessary.Be careful! The negativeterminals of the battery caseprotrude from the body, sopay attention not to injureyour fingers when insertingthe batteries.