1. Introduction
Thank you for choosing the Keenso DC48V 20A Intelligent Brushless Motor Controller. This controller is designed to provide stable speed and sensitive control over braking and directional changes for your electric scooter. Its robust metal housing with a groove design ensures efficient heat dissipation, protecting the internal circuitry from thermal overload. This manual will guide you through the installation, operation, and maintenance of your new controller.

2. Specifications
| Feature | Detail |
|---|---|
| Item Type | Electric Scooter Controller |
| Brand | Keenso |
| Material | Aluminum Alloy + PCB + Plastic |
| Voltage | DC48V |
| Current | 20A |
| Product Dimensions (L x W x H) | Approx. 99 x 70 x 33 mm (3.9 x 2.8 x 1.3 in) |
| Gross Weight | Approx. 240g (8.5oz) |
| Application | For KUGOO M4 2 Wheeled Scooter and similar 10-inch electric scooters |

3. Package Contents
The package includes:
- 1 x Keenso DC48V 20A Electric Scooter Controller
4. Safety Information
- Always disconnect power before attempting any installation or maintenance.
- Ensure all connections are secure and properly insulated to prevent short circuits.
- Do not expose the controller to water or extreme moisture.
- If you are unsure about any installation steps, consult a qualified technician.
- Keep out of reach of children.
5. Installation Guide
The controller is designed for easy installation, but it is recommended to have a basic understanding of electrical wiring. Refer to the wiring diagram below for proper connections. Ensure your scooter's battery is disconnected before starting the installation.

Wiring Connections:
- Power Cable: Connect the main power cables (usually thicker red and black wires) from the controller to your scooter's battery. Ensure correct polarity (red to positive, black to negative).
- Motor Cable: Connect the motor phase wires (typically three thicker wires, often blue, green, yellow) from the controller to the corresponding motor wires.
- Instrument Display: Connect the instrument display cable to the scooter's display unit. This provides speed, battery level, and other information.
- Power Lock: Connect the power lock wires. This typically controls the main power on/off function of the scooter.
- Positive and Negative Anodes: These refer to the main battery connections.
- The Cathode Cable: This is another term for the negative power cable.
- Brake Handle: Connect the brake handle wires. This allows the controller to detect brake input and cut power to the motor.
- Brake Light: Connect the brake light wires, if your scooter has a brake light function integrated with the controller.
After making all connections, secure the controller in a safe, dry location on your scooter, ensuring it is protected from physical damage and moisture. Double-check all connections before reconnecting the battery and testing the scooter.
6. Operating Instructions
Once the controller is correctly installed and powered on, it will manage the electric scooter's motor functions. The controller provides:
- Steady Speed Control: The controller maintains a consistent speed based on your throttle input.
- Sensitive Braking: It responds quickly to brake inputs, cutting power to the motor for effective stopping.
- Directional Change Control: Facilitates smooth acceleration and deceleration for directional changes.
Refer to your scooter's specific display and throttle instructions for detailed operation.
7. Maintenance
To ensure the longevity and optimal performance of your controller:
- Keep Clean: Periodically clean the exterior of the controller to prevent dust and debris buildup, which can hinder heat dissipation.
- Check Connections: Regularly inspect all wiring connections to ensure they are tight and free from corrosion.
- Avoid Water: Protect the controller from direct exposure to water and heavy rain. While the housing offers some protection, it is not fully waterproof.
- Temperature: Avoid operating the scooter in extremely high temperatures for extended periods, as this can stress the controller.
8. Troubleshooting
If you encounter issues with your electric scooter after installing the controller, consider the following:
- No Power/No Response:
- Check all power connections from the battery to the controller.
- Ensure the power lock is engaged (if applicable).
- Verify the battery is charged.
- Erratic Speed/Braking:
- Inspect the throttle and brake handle wiring for loose connections or damage.
- Ensure the motor phase wires are correctly connected.
- Overheating:
- Ensure the controller is mounted in a location with adequate airflow.
- Avoid overloading the scooter beyond its recommended capacity.
If problems persist, it is advisable to consult a professional electric scooter repair service.
9. User Tips
- Compatibility Check: While this controller is designed for 10-inch electric scooters like the KUGOO M4, always verify the voltage (DC48V) and current (20A) requirements of your specific scooter model before purchase and installation. For models like the Kugoo Kirin V1, confirm its electrical specifications match this controller.
- Display Integration: If you are using a specific display model, such as the S866, ensure its wiring and communication protocol are compatible with this controller. Consult the wiring diagrams for both components or seek professional assistance for integration.
- Professional Installation: For optimal performance and safety, especially if you are not experienced with electrical systems, consider professional installation.
10. Warranty and Support
For any questions, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.





