4 BATTERY CHARGING4-6■ External DC power operationAn optional CP-12L or CP-19R cigarette lighter cable,for a 12 V cigarette lighter socket, or an OPC-254L ex-ternal DC power cable can be used for external power.The attached battery pack will not be charged while op-erating the transceiver if “Charging (Power ON)” is setto the factory default setting. If the setting is set to ON inthe MENU screen, the battery pack can be charged.• The external DC power supply voltage must be between10–16 V, and the current capacity must be more than 2.5 Ato charge the battery pack when operating.Connect the DC cable as shown to the right.qPush [MENU]w to enter the Menu screen.Push D-pad(e ) to select the root item (Function),and then push D-pad(Ent) to go to the next level.D-pad(�)(Ent)( MENU > Function > Charging (Power ON))Refer to the menu sequence shown directly aboverand push D-pad() to select, and then push D-pad(Ent) to enter, one or more times until the lastscreen is displayed.Push D-pad(t ) to select “ON.”• OFF : The transceiver cannot be charged when the poweris ON.• ON : The transceiver can be charged even if the poweris ON.When the transceiver power is ON, the battery iconsequentially shows “ ,” “ ,” “ ” and “ ”while charging, and the icon disappears when thebattery pack is completely charged.NOTE: Up to 5 W (approximately) of maximum out-put power is possible when using external DC power.However, when the supply voltage exceeds 14 V, thebuilt-in protection circuit activates to reduce the trans-mit output power to approximately 2.5 W.BP-271• CP-12L (Optional)• CP-19R (Optional)• OPC-254L (Optional)to a cigarette lightersocket (12 V DC)to a 12 V DC(power supply)White: +Black: _to[DC IN]TransceiverOperating noteD• The power supply voltage must be between 10.0–16.0 V DC.NEVER CONNECT OVER 16 V DC directly into the [DCIN] jack of the transceiver.• BE SURE to use a CP-12L, CP-19R or OPC-254Lwhen connecting a regulated 12 V DC power supply.Use an external DC-DC converter to connect the transceiv-er through an optional CP-12L, CP-19R or OPC-254L to a24 V DC power source.• The voltage of the external power supply must bebetween 10–16 V DC when using either CP-12L, CP-19R or OPC-254L, otherwise, use the battery pack.• Disconnect the power cables from the transceiverwhen not using it. Otherwise, the vehicle battery willbecome exhausted.• The power save function is automatically deactivatedwhen using an external DC power source.• Be sure to observe the correct polarity of the OPC-254L supply connection.• When external power is used, the power save func-tion is automatically turned OFF.• ID-51A/E’s charging circuit may generate certainspurious signals; the S-meter appears, or noise maybe heard.When you operate the transceiver while charging, andif you cannot receive signals correctly, set “Charging(Power ON)” in the MENU screen to OFF.BE SURE to attach the battery packbefore connecting the DC cable.• “Charging (Power ON)” setting screen
