So I have motor gears. How do I connect this to battery and what part I need to buy to support 4.5 v motor gear ?
Hello @Nika11745 and welcome to the forum,
I’m guessing that you are asking how to connect a DC motor to a battery, if that’s the case then you should connect it like this:
The switch is to turn it on and off easily but if you don’t have one there’s no problem.
If you reverse the connection of the wires the motor will simply rotate the other way.
If you need to control the speed of the motor (and the direction without changing the connection) then you’ll need a motor controller, you can find different options in the Brushed DC Motor Controllers section and here’s a great guide that will help you choose one: