Hello, I bought an electric scooter, and I bought two new 12v 9ah batteries because the old ones were out of order, unfortunately the scooter runs for a few minutes and after a few minutes the relay starts buzzing in the controller and the scooter does not go, and the controller is hot when I touch it, when it starts to ride again so as if something was heating up too much and it was disconnected. I will add that the batteries give voltage to the 12v driver, so they are probably connected in parallel, but you can see on the wires that someone was messing around there and I did not check what the motor or 12v is. is it possible that if the motor is 24v then that's why it happens. if someone can help me please give me some hints. thank you in advance.