Icom IC-02A/AT/E Instruction Manual page 10

3. Connect the output plug of the supplied wall charger, or other
power source, to the charger socket of the power pack.
4. It takes about 15 hours to charge the batteries completely., When
using the optional BC-35 drop-in charger, the charging time is also
15 hours.
BATTERY PACK NOTE The full charge capacity of Nicd batteries may be reduced if
repeatedly charged with only partial discharge periods. This is
called the battery memory effect. If the battery capacity seems
lower than when new, discharge the pack completely through
normal use, then charge fully using the proper charger.
Cigarette
Lighter socket
Charging with BC-25U/E. Charging with IC-CP1.