1. Introduction
The Furitek Lizard PRO UTB18 Electronic Speed Controller (ESC) is designed for use with the AXIAL UTB18 Capra 4WD RC Crawler. This compact and powerful ESC offers enhanced performance and maneuverability for your RC vehicle. It features a built-in Bluetooth module for convenient configuration and adjustments via a smartphone application.
This manual provides essential information for the proper setup, operation, and maintenance of your Furitek Lizard PRO UTB18 ESC.
2. Key Features
- Supports sensorless brushless DC and brushed DC motors (configurable via app).
- Utilizes FOC (Field-Oriented Control) technology for smooth operation.
- Integrated Bluetooth module for wireless configuration.
- Plug & Play design specifically for AXIAL UTB18 Capra.
- Built-in BEC (Battery Eliminator Circuit) with selectable 5V/6.5V 2A output.
- Compatible with 2S-3S LiPo batteries.
- Compact size and lightweight design.
- Easy programming and firmware updates via smartphone app (Android and iOS).
- Real-time telemetry data up to 10Hz.
- Compatible with stock TX/RX or other radio systems.
3. Product Overview

An overhead view of the Furitek Lizard PRO UTB18 Electronic Speed Controller. The compact black unit features the 'FURITEK LIZARD PRO UTB18' logo prominently. It has red and black power wires terminating in a blue connector, and yellow, black, and red signal wires terminating in a black connector, indicating its various connection points for power and control.
The image above shows the Furitek Lizard PRO UTB18 ESC, highlighting its compact form factor and pre-attached wiring for easy integration into your RC vehicle. The blue connector is typically for battery input, while the black connector with multiple wires is for connecting to the receiver and motor.
4. Setup and Installation
Before installation, ensure your RC vehicle's power is off and the battery is disconnected. Refer to your RC vehicle's manual for specific component locations.
- Mounting the ESC: Securely mount the Lizard PRO UTB18 ESC in a suitable location within your RC vehicle, away from excessive heat or moisture. Use double-sided tape or zip ties if necessary.
- Connecting the Battery: Connect your 2S or 3S LiPo battery to the blue power connector on the ESC. Ensure correct polarity (red to positive, black to negative).
- Connecting to Receiver: Plug the signal cable (black connector with yellow, black, red wires) from the ESC into the throttle channel (typically Channel 2) of your RC receiver.
- Connecting the Motor: Connect your brushed or brushless motor to the appropriate motor output wires on the ESC. For brushless motors, ensure the three wires are connected correctly; if the motor spins in the wrong direction, swap any two of the three motor wires. For brushed motors, connect positive to positive and negative to negative.
- Initial Power-Up: With all connections secure, connect the battery. The ESC will power on.
Note: The ESC is not waterproof. Avoid exposure to water or excessive moisture.
5. Operating Instructions
5.1. Basic Operation
Once installed and powered on, the ESC is ready for operation. Use your RC transmitter to control the throttle. The FOC technology ensures smooth and precise control.
5.2. App Configuration (Bluetooth)
The Furitek Lizard PRO UTB18 features a built-in Bluetooth module for advanced configuration via a smartphone app. This allows for fine-tuning of various parameters.
- Download the App: Search for the official "Furitek" app on your smartphone's app store (Android or iOS).
- Connect via Bluetooth: Power on the ESC. Open the Furitek app on your smartphone and follow the in-app instructions to connect to your Lizard PRO UTB18 via Bluetooth.
- Adjust Settings: Within the app, you can adjust parameters such as:
- Motor type (Brushed/Brushless)
- BEC voltage (5V/6.5V)
- Throttle curves
- Brake settings
- Low voltage cutoff
- And more, depending on app version.
- Firmware Updates: The app also supports firmware updates for your ESC, ensuring you have the latest features and improvements.
- Real-time Telemetry: Monitor real-time data such as battery voltage, ESC temperature, and motor RPM directly from the app.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your ESC.
- Keep Clean: Regularly clean the ESC to remove dirt, dust, and debris. Use a soft brush or compressed air.
- Avoid Moisture: As the ESC is not waterproof, keep it dry. If it gets wet, disconnect power immediately and allow it to dry completely before re-powering.
- Check Connections: Periodically inspect all wire connections for looseness or damage. Secure any loose connections.
- Temperature Monitoring: During operation, monitor the ESC temperature, especially during heavy use. Excessive heat can damage the unit. The app's telemetry feature can assist with this.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| ESC does not power on. | Battery not connected, battery discharged, faulty wiring. | Check battery connection and charge level. Inspect all wires for damage. |
| Motor not responding or erratic. | Incorrect motor type setting, loose motor wires, receiver not connected. | Verify motor type in app. Check motor and receiver connections. Calibrate throttle if necessary. |
| Motor spins in wrong direction (brushless). | Incorrect motor wire phasing. | Swap any two of the three motor wires. |
| Bluetooth connection issues. | ESC not powered, app not updated, interference. | Ensure ESC is on. Update Furitek app. Try connecting in a different location. |
| ESC overheating. | Overloading, poor ventilation, incorrect gearing. | Reduce load, ensure adequate airflow, check motor and gearing for proper setup. |
8. Specifications
| Feature | Detail |
|---|---|
| Battery Support | 2S-3S LiPo |
| BEC Output | 5V or 6.5V @ 2A (Configurable) |
| Constant Current | 40A |
| Burst Current | 70A |
| Motor Compatibility | Sensorless Brushless DC, Brushed DC |
| Bluetooth Module | Built-in |
| Waterproof | No |
| Dimensions (L x W x H) | 26mm x 15.5mm x 9mm (1.0 x 0.6 x 0.3 inches) |
| Weight | 8.3 grams (0.3 oz) |
| Manufacturer | FURITEK |
Note: Specifications are subject to change without notice. Always refer to the latest information from the manufacturer.
9. Warranty and Support
For warranty information and technical support, please refer to the official Furitek website or contact their customer service directly. Warranty terms and conditions may vary by region and retailer.
It is recommended to register your product, if applicable, to receive updates and support.




