163BATTERY PACKS12345678910111213141516171819■ External DC power operationAn optional cigarette lighter cable (CP-19R; for 12 V cigarettelighter socket) can be used for external power operation.DD Operating note• BE SURE to use optional CP-19R when connecting a regu-lated 12 V DC power supply into the [DC 11V] jack of thetransceiver.• The voltage of the external power supply must be within11.7–15.9 V DC when using CP-19R.• NEVER CONNECT OVER 16 V DC through CP19R.Use an external DC-DC converter to connect the transceiverthrough CP-19R to a 24 V DC power source.• Disconnect the power cables from the transceiver when notusing it. Otherwise, the vehicle battery will become ex-hausted.• The power save function is deactivated automatically duringexternal DC power operation.CP-19R (Optional)to cigarette lightersocket (12 V DC)Transceiverto[DC 11V]