This drone is designed to be driven by a 4S battery which has a ability variety of 650mAh to 850mAh. Nevertheless, if carrying a lighter HD camera on board, you might fly that has a 1000mAh battery.    Commence by eradicating the whip antennas if utilizing the inventory O3 antennas instead. Just gently wiggle and pull them out.BETAFPV has finis