Electric toy cars are a favorite toy for children, and they have long been equipped with batteries. As an energy storage device, supercapacitors are used in toy cars, and the advantages are very obvious, which can reduce the size and weight of the car, shorten the charging time, extend the service life, and reduce the cost (compared to using Ni-MH or Li-Ion batteries).
Principle: The supercapacitor is connected with the Motor, and the LED is used to display the charging situation. When in use, charge the capacitor with an external charger, when the LED light is bright enough, it means that the charging is over, the toy car can be separated from the charger, and the supercapacitor is powered to the motor when used to maintain the toy car. Here, supercapacitors completely replace batteries and show their advantages.