The car fast charge is generally 12V or 24V.
The power used in the car fast charge is usually the car's battery, and the working voltage of the car battery is generally 12V or 24V.
Different models and brands of car fast charge may have some differences, but in general, most of the input voltage of the car fast charge is 12V or 24V to adapt to the voltage standard of the car battery.
Therefore, if you need to use the car fast charge to charge the device, you can choose the corresponding voltage fast charger.
Car charger output voltage is DC 5V. Each charger parameters are not the same, under normal circumstances there are two types of input voltage,12v and 24v, general car 12V, truck 24V, output voltage is generally 5V