133 BATTERY PACKS■ Regular chargingWhen using a BP-227 BATTERY PACK attached to the trans-ceiver, prior to using the transceiver for the first time, the bat-tery pack must be fully charged for optimum life andoperation.DD Charging note• Be sure to turn the transceiver power OFF.Otherwise the battery pack will not be charged completely or takeslonger charging time periods.• External DC power operation becomes possible when usingan optional CP-19R. The attached battery pack is alsocharged simultaneously, except during transmit. (see p. 16for more details)Even through there is no indication during regular charg-ing, the transceiver automatically stops charging the bat-tery pack when the battery pack is fully charged (BP-227’svoltage becomes approx. 7.2 V) or the continuous charg-ing time is over 15 hours.• BC-167A/D• CP-19R (Optional)to AC outletto cigarette lightersocket (12 V DC)Transceiverto[DC 11V]Turn power OFFwhile charging thebattery pack.• Charging time period:Approx. 12–13 hours