ITEM NAME:2Pcs QC3.0 DC-DC Converter Charging Step Down Module Quick Charger Circuit SEAU Description Voltage range nput: 6 V to 32 V Output voltage: The default value is 5 V. After activating the fast charge, it automatically adjusts between 3 and 12 V. Output power? 24 W (5 V 3.4A 9 V 2.5A 12 V 2A etc.) Cable output voltage compensation Conversion efficiency: 90% to 97% Supports multiple fast loading protocols Input overvoltage, protection below voltage Overcurrent protection input Protection against overcurrent and short circuits About temperature protection Support fast loading protocol For BC1.2, iPhone, Samsung agreement For Qualcomm QC2.O and QC3.O MTKPEI.1 / PE2.O Fast loading FCP protocol Star AFC fast charge protocol The applications Solar panel for mobile phone charging Retrofit car load Driving recorder of power supply Packing List: 2 Pieces DC-DC Step Down Buck Converter Charge Module.Retrofit car load. Supports multiple fast loading protocols. Support fast loading protocol. Fast loading FCP protocol. Output power?. 24 W (5 V 3.4A 9 V 2.5A 12 V 2A etc.). Overcurrent protection input.