One of the important reasons why major brands such as car charger are often burned out suddenly is that many people like to insert car charger into the cigarette lighter hole before the car ignites. Once the car ignites at this time, instantaneous high pressure will be generated and car charger will be burned out to a large extent. Therefore, if a friend who has this habit must correct it and habitually pull car charger out of the cigarette lighter hole after the car flameout, this is a good usage habit and an important guarantee to avoid car charger being burned out suddenly.