Icom IC-4A Instruction Manual page 8

3. Connect the output plug of the wall charger (BC-25U), or other power source, to the charger
` socket of the power pack. (When charging Nickel-Cadmium batteries in the ІС-ВР4 power pack,
you should use the BC-30 charger only.)
The charge indicator LED of the power pack is lit, which shows that the charger is working.
Cigarette
Lighter plug
4. It takes about 15 hours to charge the batteries completely. This charger is designed for 0.1C
(10-hour rate current), but charge for 15 hours in order to compensate for any unbalance of the
batteries.
You should charge the batteries for 15 hours when you have not used them for a long time or
after buying them.
5. Charge between O^C and 40°C.
6. Avoid continuing charging as much as possible after full charging, (15 hours). If excess charging
is repeated, efficiency of the power pack is reduced.
7. After charging, unplug the power source from the charger socket of the power pack. Тһе trans-
ceiver and the power pack are now ready for operation.