Section Iv Pre-Operation; Battery Installation; How To Charge - Icom IC-4A Instruction Manual

SECTION IV PRE-OPERATION |
BATTERY INSTALLATION
When using Nickel-Cadmium power pack IC-BP3:
The IC-BP3 is a rechargeable Nickel-Cadmium power pack, and it can be slipped onto or off the
set very easily. It has a connector for a charger charge-current control circuit, reverse polarity pro-
tection circuit and charge indicator LED in its own pack. You can use the supplied BC-25U wall
charger or similar simple wall charger, or a car battery by using optional cable IC-CP1 for recharging.
Before use, the power pack should be charged about 15 hours, because the battery may have dis-
charged.
After charging is completed, the batteries can be used in the same manner as dry cells. However, the
voltage of Nickel-Cadmium batteries drops rapidly just before they are exhausted, so when the Trans-
mit Indicator LED of the transceiver goes out, be sure to immediately stop using it, and recharge the
batteries again.
HOW TO CHARGE (When using Nickel-Cadmium power pack IC-BP3)
1. Use the supplied wall charger BC-25U ог а stable power source with an output voltage of ОС
13.8V and current capacity over 50mA, or use a 12V car battery with optional charger cable
IC-CP1. (Output voltage of 12 — 15V can be used, but output voltage near the specified voltage
should be used.)
2. The power switch of the transceiver must be OFF, or remove the power pack from the tran-
sceiver.