... the output port of this USB car charger, then charge devices (such as mobile phone, MP3, Camera, ect) by ... caused by wrong specification.4,The temperature of car charger will be higher when charging, it is normal ... within 60 °C under normal room temperature.5,Car charger will stop working when it is overcurrent, over-temperature ... please refer to update ones. Mini USB Car Charger for iPhone 4,4S, iPad 2