At our last Club picnic one of the otherInstructors was giving Buddy Box flights and decided to push the quick charge on the Rx Battery one flight too many. It was about 400 feet up in a gentle turn at about 1/4 throttle at the time. We watched it go in wider and wider circles until it straightened out and got out of sight over the tree line. It actaully got turned around and was heading back toward the field when it ran out of fuel and hit a house about 1/2 mile away. No more "quick" charges like that....