Icom IC-92AD Instruction Manual - Page 20

3 BATTERY CHARGING ■ Optional battery case ➥ Install 2 × LR6 (AA) size alkaline batteries into the optional BP-257 BATTERY CASE. • Be sure to observe the correct polarity. A built-in step-up convertor in the BP-257 increases the voltage to 5 V DC. Approx. 100 mW of output power is possible with the BP-257 operation. Also, no transmit output power selection is available. Keep battery contacts clean. It's a good idea to clean battery terminals once a week. D Battery information The batteries may seem to have low capacity when used in low temperatures such as -10°C (+14°F) or below. Keep the battery case or pack warm in this case. D Battery replacement When the batteries become exhausted, the function display may blink or have a lower contrast. In these cases, replace all batteries with new, same brand, alkaline batteries. 12 ■ Battery information D Battery life The transceiver operates with the BP-256 Li-ion as follows. However, when operating in DV mode, operating time may be shortened by one-half hour. • VHF band : Approx. 6 hours • UHF band : Approx. 5.5 hours (Tx: Rx: Stand-by=1: 1: 8) Even when the transceiver power is OFF, a small current still flows in the radio. Remove the battery pack or case from the transceiver when not using it for a long time. Otherwise, the battery pack or installed batteries will become exhausted. The battery protection function sets to S-Low (0.5 W) automatically while using 0°C (+32°F). cally Transmit power selection is also disable. D Battery indicator The battery indicator, " ," appears only when the BP-256 Li-ion is attached to the transceiver. The battery indicator does not appear when turning power ON after charging is completed without disconnecting the battery charger or external DC power. Indication Battery condition The battery has ample capacity. The battery is nearing exhaustion. Charging is necessary.