1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your Fydun M5 LCD Display. Please read this manual thoroughly before use to ensure proper functionality and longevity of the product.
The Fydun M5 LCD Display is a versatile electric meter designed for electric bikes and scooters. It features a clear display for essential riding data and is built for durability and ease of use.
2. Product Overview
The M5 LCD Display offers a clear interface for monitoring your electric vehicle's performance. Key features include:
- Waterproof Design: The display is designed to withstand various weather conditions, ensuring reliable operation even in rain.
- Durable Construction: Built with premium ABS material and sturdy wiring, it ensures a low failure rate and long-term performance.
- Easy Installation: Compatible with 31.8mm and 22.2mm mounting apertures, facilitating straightforward installation on most electric bikes and scooters.
- Replacement Part: An ideal component for replacing old or damaged displays, restoring full functionality and enhancing the vehicle's appearance.

Image: Front view of the Fydun M5 LCD Display with its control unit and connector cable.

Image: Visual representation highlighting the display's waterproof design and suitability as a replacement part.
3. Specifications
| Feature | Detail |
|---|---|
| Model Number | Fydunrkt1qmx8oz |
| Voltage Compatibility | 24V, 36V, 48V, 60V Universal |
| Pin Configuration | 5 Pin Electric Meter |
| Mounting Aperture | 31.8mm (optional 22.2mm) |
| Material | Premium ABS |
| Display Type | LCD |

Image: Diagram showing the dimensions of the M5 LCD Display and the pinout for the 5-pin connector.
4. What's in the Box
Upon opening the package, you should find the following items:
- 1 x Electric LCD Meter (Fydun M5 LCD Display)
- 1 x Instruction Manual (this document)
- 1 x Connection Cable
5. Setup and Installation
Follow these steps to properly install your Fydun M5 LCD Display:
- Prepare the Handlebar: Ensure the handlebar area where you intend to mount the display is clean and free from obstructions. The display supports 31.8mm and 22.2mm handlebar diameters.
- Mount the Display: Securely attach the display bracket to your electric bike or scooter's handlebar. Use the appropriate mounting aperture for your handlebar size. Tighten the screws firmly but do not overtighten.
- Connect the Control Unit: Attach the separate control unit (buttons) to a convenient location on your handlebar, typically near your thumb for easy access.
- Connect the 5-Pin Cable: Locate the 5-pin connector on your electric bike/scooter's controller or wiring harness. Carefully align the pins and connect the display's cable. Ensure a snug fit. Refer to the pinout diagram for correct wiring if you are performing a custom installation or replacement.
- Cable Management: Route the cables neatly along the handlebar and frame, securing them with cable ties if necessary, to prevent interference with steering or moving parts.
- Initial Power On: After installation, power on your electric bike/scooter to check if the display illuminates and shows data correctly.

Image: The M5 LCD Display and its control unit mounted on a bicycle handlebar, showing the typical installation setup.

Image: Detailed diagram of the 5-pin connector, indicating the color and function of each wire (Red, Blue, Black, Green, Yellow).
6. Operating Instructions
The Fydun M5 LCD Display provides real-time information and control for your electric vehicle. Here's how to operate it:
6.1 Power On/Off
- To power on the display, press and hold the power button (usually the middle button on the control unit) for a few seconds.
- To power off, press and hold the power button again until the display turns off.
6.2 Display Information
The display typically shows the following information:
- Speed: Current riding speed (km/h or mph).
- Battery Level: An energy bar indicating the remaining battery charge.
- Trip Distance: Distance covered during the current trip.
- Cruise Control: Indication if cruise control is active.
- Manual Mode: Indication if manual mode is active.
6.3 Button Functions (Control Unit)
The control unit typically has three buttons:
- Up Button (▲): Used to increase values, navigate menus, or activate certain functions (e.g., higher assist level).
- Down Button (▼): Used to decrease values, navigate menus, or activate certain functions (e.g., lower assist level).
- Middle Button (M / Power): Used to power on/off, confirm selections, or switch display modes (e.g., between ODO, Trip, Time).
Note: Specific button functions and display modes may vary slightly depending on the electric vehicle's controller settings. Refer to your vehicle's main manual for advanced settings.

Image: Close-up view of the three-button control unit, showing the Up, Down, and Middle (M) buttons.
7. Maintenance
To ensure the longevity and optimal performance of your Fydun M5 LCD Display, follow these maintenance guidelines:
- Cleaning: Wipe the display screen and body with a soft, damp cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the screen or casing.
- Water Exposure: While the display is waterproof, avoid submerging it in water or exposing it to high-pressure water jets. Ensure the connector is always dry before connecting or disconnecting.
- Cable Inspection: Periodically check all cables and connectors for any signs of wear, fraying, or damage. Ensure connections are secure.
- Storage: If storing your electric vehicle for an extended period, ensure the display is clean and dry. Store in a cool, dry place away from direct sunlight.
- Avoid Impact: Protect the display from physical impacts or drops, which can cause internal or external damage.
8. Troubleshooting
If you encounter issues with your Fydun M5 LCD Display, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Display does not power on. |
|
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| Incorrect speed or distance readings. |
|
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| Buttons are unresponsive. |
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If the problem persists after attempting these solutions, please contact Fydun customer support for further assistance.
9. Warranty and Support
Fydun products are manufactured to high-quality standards. For warranty information and customer support, please refer to the warranty card included with your purchase or visit the official Fydun website.
When contacting support, please have your product model number (Fydunrkt1qmx8oz) and purchase date available.