purchased Q500 Friday. Saturday morning with less than 10 min flight time the voltage light showed no charge. ( before leaving the house the charger showed the battery was fully charged) I immediately started the Home mode. Drone responded and was descending when at about 75ft 1 prop flew off and the drone free fell and is damaged. Props were tightened very well and charger showed full charge. Any ideas how this might have happened? I have started a warranty chase with Yuneec. Needless to say im not happy.