ITEM NAME:Mobile Phone USB DC Step Down Module 12V 24V to QC3.0 Fast Charging Board A#S Product Description Description: Feature: 1. Supporting multiple fast charging protocols. 2. Input Overvoltage and Undervoltage Protection. 3. Input Overcurrent Protection. 4. Output Overcurrent and Short Circuit Protection. 5. Over-temperature protection of the whole machine. 6. Output Voltage Cable Compensation Function. Supporting Fast Charging Protocol: 1. BC1.2, for Apple, for Samsung Protocol. 2. For Qualcomm QC2.0 and 3.0. 3. MTK PE1.1/PE2.0. 4. For Huawei Fast Charging Protocol FCP does not support Mat9 (SCP). 5. For SPRD Charging Protocol SFCP. Application: 1. Charging of Solar Panels to Mobile Phones. 2. Vehicle Charging Reform. 3. Power Supply for Traffic Recorder. 4. Renovation of Household Power Supply. Specification: Input voltage range: 6V-32V Output Voltage: Default 5V, automatic adjustment between 3-12V after triggering fast charge Output power: maximum 24W (5V 3.4A, 9V 2.5A, 12V 2A, etc.) Conversion efficiency: 90%-97% Product size: 37*20*10mm/1.45*0.78*0.39'' Weight: 8g Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 X Mobile Phone USB DC Step Down Module.Vehicle Charging Reform. Output Overcurrent and Short Circuit Protection. Output power: maximum 24W (5V 3.4A, 9V 2.5A, 12V 2A, etc.). Supporting multiple fast charging protocols. Supporting Fast Charging Protocol.