How Do You Test An Electric Scooter Controller?

November 13, 2022

Owning an electric scooter is all fun and games until you encounter even the slightest issue with no clue on how to tackle it effectively. The technological benefits that an electric scooter bestowed us with also came at the cost of getting educated on operating, maintaining and repairing it.

Let's say your motorized scooter suddenly stopped working, or you are experiencing a lag in its speed. How do you troubleshoot this issue? Is there any issue with the dual motor electric scooter controller or perhaps the motor?

This article will illustrate how to encounter any such occurrences efficiently.

What Is An Electric Scooter Controller?

The escooter controller, an electric circuit device in charge of managing other scooter parts, serves as the motor scooter's central nervous system. The controller or electronic speed controller (ESC) is an electronic circuit that controls the speed of the motor in an off road electric scooter. It regulates the launch, pause, and engine velocity.

Every electrical part of the dual motor electric scooter, including the throttle, battery, display, motor, and speed sensor, is wired to the escooter controller. It receives input from the throttle and precisely controls the flow of current from the battery to the motor.

High-current, high-voltage controllers may drive more potent electric scooters for adults than their lower-current, lower-voltage counterparts. Controllers are evaluated based on current and voltage measured in amperes and volts, respectively.

High-performance, dual-motor electric scooters often feature two controllers, unlike most electric scooters for adults with only one controller that powers one electric motor.

Varla Eagle One's best-selling off road electric scooter displays a Dual 1000W hub motor on the wheels that can provide a peak power output of 3200W, powered by 2x25A speed controllers, maintaining the optimal performance of the e scooter at all times.

Functions Of An Electric-scooter Controller:

ECs called dual motor electric scooter controllers are made of a programmable microcontroller with a connection to an electric motor and several inputs, including control signals and a battery connection.

The microcontroller/processor, which is essentially a miniature computer running control software or firmware, is the Mega mind of the ESC. The ESC identifies the sound output and timing signal by listening to numerous signals. In essence, the throttle signal tells the ESC to set the motor at a certain speed. The ESC regulates the motor signal to provide the speed that the throttle desires by either using a hall sensor to measure the motor speed or by detecting the electric motor's back-EMF.

Additionally, it manages all of the primary safety and defence features of an e scooter. These defence mechanisms consist of the following:

1.  Excessive current safety:

This operation is specifically designed to shield the off road electric scooter motor and FET from the excessive current by automatically shutting down the motor.

2.  Outrageous voltage shield:

The electric controller constantly scrutinizes the voltage movement from the battery, and if it exceeds the desirable amount, the motor is shut down immediately.

3.  Inadequate voltage protection:

The electric controller also tackles the over-discharge issues of the motor and battery when the battery operates on low voltage.

4.  Brake safety:

To safeguard the long range electric scooter rider from potential road or track threats, the escooter controller immediately shuts off the motor when the brakes are applied.

5.  High-temperature shield:

The e-scooter controller is responsible for keeping track of the Field Effect Transistor (FET) temperature. These transistors carry power. To prevent short circuits on the transistors, the controller instructs the motor to stop when the FET temperature becomes too high.

How To Test An Electric Scooter Controller At Home?

The resistance of the MOSFETs inside the controller may often be used to evaluate an 40 mph electric scooter controller. If there is no shortage between the MOSFETs and the two battery lines, your controller is functioning normally.

Every scooter rider should be able to do basic long range electric scooter repair and maintenance. To avoid grounding your motor scooter, discover how to test an electric scooter controller from the comfort of your home.

1.  Millimetre test method:

The multimeter, controller, and battery are required for this procedure, which is more sophisticated than utilizing an 40 mph electric scooter tester. A stage process tutorial for testing your motor scooter controller with a multimeter is provided below:

  1. Attach the battery to your best electric scooter controller. Adjust the multimeter reading according to the testing method: continuity, or resistance, depending on your goals.
  2. Set the continuum setting on your multimeter to check for continuity. The negative end of the battery should be connected to the black multimeter wire. Test each line that the controller outputs. The occurrence of a beep sound indicates a shortage in line.
  3. To check for resistance, switch your multimeter to the resistance mode. For continuity, repeat the process as before, but this time, pay attention to the numbers showing on your multimeter. Lower readings than eight kilohms indicate that the line has been damaged or is not functioning properly.

2. Electric-scooter tester method:

It is better to use an escooter tester since it will test the controller and every component of your fast electric scooter. There are several different types of escooter tests in the industry. A step-by-step tutorial for testing your scooter electric controller using an scooter electric tester is provided below:

  1. Take the scooter's long range electric scooter controller off of it. Instead of connecting the throttle to the adult electric scooter, do so to the commuter electric scooter controller. It ensures that the controller receives signals from the throttle.
  2. Link the controller to the 40 mph electric scooter tester. Switch the adult electric scooter tester on. Flick on the throttle and look at the controller to see the signal.
  3. The tester is functional if the light is flashing. Only the centre light flickering indicates an issue with your controller.

Common Electric Scooter Controller Problems And Solutions:

1.  Defect in electric scooter controller:

The fault in an electric scooter controller requires extensive inspection of various long range electric scooter components, including the throttle, controller, power switch, circuit breaker, brake lever switch, fuse, and controller components, or a thorough examination of the motor itself.

2.  Constantly driving motor:

By removing the throttle from the controller, you can determine if the issue is with the throttle or the controller. The throttle is broken if the motor shuts off. If not, the speed controller is to blame. To avoid issues, switch to a new one that has the same specifications, brand, and version as the former.

3.  Inadequate acceleration:

Check the fuse, wiring, or speed controller to look for any possible damage.

Bottom Line:

The two effective methods of testing an e-scooter controller at home, the electric scooter tester and the millimetre tester method, give us useful insight into any malfunction occurring. The two classified testing procedures are used to identify and further imply adequate operations to solve electric scooter tribulations.


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Carlos Diaz
I believe in making the impossible possible because there’s no fun in giving up. Travel, design, fashion and current trends in the field of industrial construction are topics that I enjoy writing about.

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