For many 9v devices, such as: Driving recorder, electronic dog, dash cam, GPS, radar detector, solar panel, heated seat, led lining strip, tire inflator,led lights,fan, VA supplied health equipment that uses a cigarette port for the charger, ect. Multiple voltages: The USB Type-C to cigarette lighter adapter has multiple output voltages of 9V, 12V, 15V, and 20V to choose from to meet the voltage needs of your different devices. USB C to Car Cigarette Lighter Cable Converter,Multiple intelligent safety protection, boost module comes with over-voltage, short circuit and other multiple protection. Omni-directional protection of power supply equipment and electrical equipment safety. PD Type-C Female to Car Cigarette lighter Female 9V Adapter Cable: Enable you to power your 9V device using an external PD power supply or PD charger that have USB-C PD capabilities, perfect for your 9V car devices while camping or indoors. Built-in PD decoy chip: The built-in PD decoy chip in the USB Type-C to cigarette lighter female charging cable can automatically identify the voltage and current required by different electronic products,Support 9V /65W current. and must be used with a 45W ~ 100W USB-C PD charger. The Type-C charger power must be over than the output end. NOTE:It does not support bidirectional charging.