143BATTERY PACKS133 BATTERY PACKS‘‘ Charging NOTEPrior to using the transceiver for the first time, the battery pack mustbe fully charged for optimum life and operation.• Recommended temperature range for charging:+10°C to +40°C (50°F to 140°F).• Use the supplied charger or optional charger (BC-144/BC-121 forrapid charging, BC-146 for regular charging) only. NEVER useother manufacturers’ chargers.The optional BP-222, BP-209 or BP-210 battery packs includerechargeable Ni-Cd (Ni-MH: BP-210) batteries and can be chargedapprox. 300 times. Charge the battery pack before first operatingthe transceiver or when the battery pack becomes exhausted.If you want to charge the battery pack more than 300 times, the fol-lowing points should be observed:• Avoid over charging. The charging period should be less than24 hours.• Use the battery until it becomes almost completely exhaustedunder normal conditions. We recommend battery charging aftertransmitting becomes impossible.DD Battery pack lifeWhen the operating period becomes extremely short even aftercharging the battery pack fully, a new battery pack is needed.D Rapid charging with the BC-144 (#11)The optional BC-144 (#11)provides rapid charging of op-tional battery packs.The following are additionallyrequired:• An AC adaptor (may be sup-plied with the BC-144 de-pending on version).D Rapid charging with the BC-121+AD-94 (#11)The optional BC-121 allows up to 6 battery packs to be charged si-multaneously. The followingare additionally required.• Six AD-94 (#11).• An AC adaptor (may besupplied with the BC-121depending on version).MULTI-CHARGERAC adapter(purchased separately)Charge indicator(each indicator functionsindependently)Turn power OFF.Check orientationfor correct charging.(Insert together withAD-99.)BC-144 + AD-99Check orientationfor correct charg-ing. (Insert togeth-er with AD-99.)Turn power OFF.