1. Introduction
This manual provides comprehensive instructions for the F3 E-Bike LCD Display, a versatile cycling accessory designed for electric bicycles and scooters. It functions as a speedometer, cycling computer, and offers NFC capabilities for enhanced user interaction. The display provides essential riding data and control functions to optimize your electric vehicle experience.
Image: F3 E-Bike LCD Display showing the unit, an NFC card, and a control button panel.
2. Specifications
| Feature | Description |
|---|---|
| Product Name | F3 Bicycle Accessory |
| Type | Display |
| Dimensions (L x W x H) | 84.1mm x 58.2mm x 11mm |
| Communication Method | UART 2 |
| Compatible Handlebar Sizes | 22.2mm, 25.4mm, 28.6mm, 31.8mm |
| Compatible Voltage | 24V / 36V / 48V / 60V |
| USB Charging Output | 5V / 500mA (Type-C interface) |
| Key Functions | Battery indicator, headlight control, boost function, assist levels, speed display, trip/total mileage, running time, metric/imperial conversion, fault indicator, walking mode, PAS levels, riding time, error warning, NFC. |
| Connector Types | 5PIN, 6PIN, SM 5PIN, SM 6PIN, SM 7PIN (5and2) |
| Cable Length (5 Pin Male) | 150mm |
Image: Diagram showing the dimensions of the F3 E-Bike Display (84.1mm x 58.2mm x 11.3mm).
3. Setup and Installation
Important Compatibility Notice:
The F3 E-Bike LCD Display operates using the UART 2 communication protocol. It is crucial that your e-bike's controller also uses the UART 2 protocol. If the protocols do not match, the display may not function correctly or at all. Inappropriate interface replacement can also affect normal operation.
Image: Warning about UART 2 protocol compatibility for proper function.
Image: Various bike conversion kit connectors (1-5) and a warning against incompatible interfaces.
3.1 Installation Process
Follow these steps to install your F3 E-Bike LCD Display:
- Attach the display bracket to your bicycle's handlebar. Ensure it is securely fastened.
- Carefully slide the F3 display unit into the mounted bracket until it clicks into place.
- Tighten any remaining screws on the bracket to firmly secure the display.
- Adjust the display angle for optimal visibility while riding.
- Connect the display's cable to the corresponding port on your e-bike's controller. Ensure the connector type (e.g., 5-pin male) matches. The 5-pin male waterproof cable has a length of 150mm.
- Power on your e-bike and verify that the display illuminates and shows data correctly.
Image: Visual guide illustrating the 6-step installation process for the display on a handlebar.
4. Operating Instructions
4.1 Display Overview
The F3 display provides a clear overview of your riding metrics. Key indicators include:
- Battery Indicator: Shows current battery charge level.
- Headlight Indicator: Indicates if headlights are active.
- NFC: Near Field Communication status/indicator.
- Speed: Current riding speed (km/h or mph).
- PAS (Pedal Assist System): Current assist level.
- Dynamic Speed Bar: Visual representation of speed.
- Multifunctional Display Area: Shows ODO (Odometer), TRIP (Trip distance), VOL (Voltage), CUR (Current), and other data.
Image: The F3 display highlighting various metrics such as speed, battery, NFC, and PAS levels.
4.2 Basic Functions
- Power On/Off: Typically controlled by a dedicated power button on the display or an external controller.
- Headlight Control: Use the designated button on the control panel to turn headlights on or off.
- Assist Levels: Adjust pedal assist levels using the '+' and '-' buttons on the control panel.
- Boost Function: Engage the boost function for temporary extra power, if available and configured.
- Walking Mode: Activates a low-speed assist for walking alongside the bike.
4.3 USB Charging
The F3 display features a Type-C USB interface, which can be used for emergency charging of mobile phones or other small electronic devices. The output is 5V/500mA.
Image: Close-up of the F3 display showing the integrated Type-C USB port for charging.
5. Maintenance
- Cleaning: Wipe the display screen with a soft, damp cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the screen or casing.
- Protection: While the display is designed for outdoor use, protect it from prolonged exposure to direct sunlight, heavy rain, or extreme temperatures when not in use.
- Connections: Periodically check all cable connections to ensure they are secure and free from corrosion or damage.
- Storage: If storing your e-bike for an extended period, ensure the display is clean and stored in a dry, temperate environment.
6. Troubleshooting
6.1 Common Issues and Solutions
- Display Not Working / Abnormal Function:
Cause: The most common reason is a mismatch in communication protocols. The F3 display uses UART 2. If your e-bike's controller uses a different protocol (e.g., Bafang UART, KDS UART), the display will not function correctly.
Solution: Verify that your e-bike's controller is compatible with the UART 2 protocol. Check your controller's manual, its physical appearance, or consult the seller of your e-bike or controller. This display is only compatible with UART2 protocol controllers.
- Speed Display Inaccurate or Limited:
Cause: Speed limitations can be imposed by either the e-bike's controller or the display itself.
Solution: If your controller has a built-in speed limit, the F3 display will only show that limited speed, and the display cannot override it. If the speed limit is controlled by the display, it may be adjustable (see "User Tips" for speed adjustment).
- Incompatible with Specific E-Bike Models:
Cause: Due to the wide variety of internal components and protocols across different e-bike and electric scooter models, universal compatibility cannot be guaranteed.
Solution: The F3 display is designed for controllers using the UART2 protocol. Compatibility with specific brands like Varla Eagle One V2, Kaboo Mantis Plus, or Assassin 3000w cannot be confirmed without knowing their controller's protocol. Always confirm your controller's protocol before purchase.
7. User Tips
- Checking Controller Protocol: If you are unsure about your controller's protocol, examine the controller's casing for labels, refer to its user manual, or contact the original seller of your e-bike or controller for confirmation.
- Adjusting Speed Settings (P08): To change speed settings on the display:
- Long press the '+' and '-' keys simultaneously to enter the menu.
- Short press the power button to navigate to parameter P08.
- Use the '+' key to set your desired speed value.
- Long press the '+' and '-' keys simultaneously again to save the setting and exit the menu.
- NFC Functionality: The F3 display supports NFC. This feature can be used for functions such as unlocking or activating your e-bike with a compatible NFC card. Refer to your e-bike's controller manual for specific NFC integration details.
- Speed Limit Customization: While the standard F3 display does not have an immediate 25 km/h speed limit, specially customized versions might. If you require specific speed limit functionalities, confirm with your seller during purchase.
8. Warranty and Support
For any technical assistance, warranty claims, or further inquiries regarding your F3 E-Bike LCD Display, please contact the seller or manufacturer directly. Ensure you have your purchase details and product model information readily available.
