i recently picked up an IC-24AT. the radio came with the BP-84 7.2V 1200mAh battery and the BC-72 slow charger. the radio can only xmit at 1.5 watts with the current battery and i can not run the radio at home using the charger. what battery do i need to increase the xmit to 5 watts and is there a way to run the radio at home off 120VAC or the car's cigarette light? -steve hanlon KB3KAQ