Bought as a birthday present for a first grader. His parents reported that it was one of his favorite Christmas gifts. However, a few days later we learned that he almost set his house on fire during the attack. There doesn't appear to be any safety mechanism to prevent the lithium battery from being overcharged. Parents found it quickly as it began to smoke and smolder with little damage done. Needless to say, a very scary situation that could have turned out a lot worse!