Learning more about solar conversion is fun and educational, being an opportunity to have fun and develop imagination when it’s used to change an old toy car. How can you make your toy car a solar powered car?
The first thing you have to do is calculate the operating voltage and current drawn by your toy car. You also have to know that two fersh alkaline AA batteries in series, provide a total of 3V and a current of 700 mA.
The next thing is to select a solar panel with a voltage and current rating appropriate your car’s needs. In case the solar panel doesn’t produce enough current as your original batteries, the car may run, but at a lower speed.
See where the battery panel of the car is. Open it and test your solar panel and attach the positive, or red, lead of of the panel to the positive connector of the battery holder. Do the same thing to the negative, or black, lead to the negative connector. If your toy doesn’t run, it means that there is not enough current.
Use tape or hot glue and mount the solar panel on the roof of the toy car. Run the leads down to the battery holder and then solder or tape them to the contacts. In case the leads are not enough, you can splice them with wire and insulate the joints with electrical tape.
If still, your car doesn’t run, you should adjust the angle of the pane. Or, you should go outside in bright sunshine to increase the amount of light.