Charging mobile phone by blowing the electric fan against it, charging is not fast. This problem seems to make sense, when the mobile phone is charging, because there is an electric fan blowing, the battery and charger can cool down, but the mobile phone battery and charger are protected devices, as long as it is charging, the mobile phone battery and charger do not exceed the specified temperature, it will be charged normally, if your mobile phone and mobile phone battery to the extent of using the electric fan to blow, Then your cell phone battery and charger this to the point of no use.