Car Charging Adapter USB A charging port 4x shorter charging time than when using conventional 5V USB chargers charging with 12 or 24 V car socket Protection against overcurrent and short circuit Technical data Rated input voltage/rated input current: 12/24 V, 3.5 A Rated Output Voltage/Rated Output Current (Qualcomm� Quick Charge� 3.0): 3.6 � 6.5 V, 3 A/6.5 � 9 V, 2 A/9 � 12 V, 1.5 A Max. Output Current (Total): 18 W. For Mobile Phones, Tablets, E-Book Readers, etc.