1. Introduction
The Varstrom VD03 is a compact and robust display unit designed for electric bicycles equipped with BAFANG CAN Bus mid-motors. This display provides essential riding information and allows for control over various e-bike functions. It features a 1.5-inch LED screen, a 22.2 mm handlebar mount diameter, and supports 3, 5, or 9 levels of pedal assist (PAS).
This manual will guide you through the proper installation, operation, and care of your VD03 display to ensure optimal performance and longevity.
Image 1.1: The Varstrom VD03 display unit, showing its compact design and 5-pin triangular connector.
2. Compatibility
The Varstrom VD03 display is specifically designed for BAFANG mid-motors utilizing the CAN Bus communication protocol. It is compatible with the latest 2025 version of the Bafang CAN protocol for mid-motors. Ensure your motor uses a CAN Bus protocol for proper functionality.
2.1 Compatible BAFANG Mid-Motors:
- BBS01B
- BBS02B
- BBS-HD
- M200, M400, M420
- M500, M510
- M600, M620, M625
- M325, M225
Important: This display is NOT compatible with BAFANG motors that use the UART communication protocol. The connector type is a 5-pin triangular plug. Please verify your motor's protocol and connector type before purchase or installation.
Image 2.1: Visual guide for compatible CAN Bus 5-pin connector and examples of compatible BAFANG mid and hub motors.
3. Key Features
- Compact LED Display: 1.5-inch high-resolution LED screen for clear readability.
- Robust Construction: Made from durable ABS plastic and PC, with an IPX7 waterproof rating (suitable for rain, but not extreme weather).
- PAS Levels: Supports 0-3, 0-5, or 0-9 levels of pedal assist.
- Essential Riding Data: Displays real-time speed, battery level, gear indication, and headlight indicator.
- App Connectivity: Compatible with the "BIKEGO+" application for advanced functions like total mileage reset.
- Adjustable Settings: Features adjustable wheel size and automatic shutdown.
- Quick Speed Limit Adjustment: Easily set or remove speed limits by holding "+" and the power button.
- Password Protection: Includes a password feature (default: 2020).
Image 3.1: Overview of VD03 display features, including screen size, holder size, and app support.
Image 3.2: Illustration of the display's multi-function LCD, highlighting real-time speed, battery, gear, and headlight indicators.
4. Setup and Installation
The VD03 mini display is designed for straightforward installation on standard bicycle handlebars with a diameter of 22.2 mm.
4.1 Installation Steps:
- Prepare Handlebar: Ensure the handlebar area where the display will be mounted is clean and free from obstructions.
- Mount the Display: Use the included mounting bracket to securely attach the VD03 display to your 22.2 mm diameter handlebar. Position it for optimal visibility and ergonomic access to the buttons.
- Connect to Motor: Locate the 5-pin triangular CAN Bus connector from your BAFANG mid-motor. Carefully align and connect the display's cable to this connector. Ensure a firm and secure connection.
- Cable Management: Route the display cable along your bicycle frame, securing it with cable ties to prevent snagging or damage.
After installation, perform a quick check to ensure all connections are secure and the display powers on correctly when the e-bike system is activated.
Image 4.1: The VD03 display highlighting its compact dimensions and secure mounting.
5. Operating Instructions
The VD03 display provides intuitive control over your e-bike's functions. Familiarize yourself with the buttons and display indicators for a safe and enjoyable ride.
5.1 Basic Operation:
- Power On/Off: Press and hold the power button (usually indicated by a power symbol) to turn the display on or off.
- Adjust PAS Level: Use the "+" and "-" buttons to cycle through the available pedal assist levels (0-3, 0-5, or 0-9, depending on configuration). Level 0 typically means no assist.
- Headlight Control: A dedicated button or a long press of a specific button may activate/deactivate your e-bike's headlights, indicated by the headlight icon on the display.
- Information Display: The screen continuously shows real-time speed, current battery level, and the active PAS level.
5.2 Advanced Functions:
- Speed Limit Adjustment: To quickly set or remove the speed limit, press and hold the "+" button and the power button simultaneously. Refer to the full manual for detailed steps.
- Wheel Size Setting: The display allows for adjustment of wheel size to ensure accurate speed and distance readings. This setting is typically accessed through a menu.
- Automatic Shutdown: The display features an automatic shutdown function to conserve battery power after a period of inactivity.
- Password Protection: The display has a password feature (default: 2020) to prevent unauthorized use or tampering with settings.
6. App Support: BIKEGO+
The VD03 display is compatible with the "BIKEGO+" mobile application, which unlocks additional functionalities and data management for your e-bike. This app allows for advanced features such as resetting total mileage and potentially more detailed ride statistics.
6.1 Connecting to the App:
- Download the "BIKEGO+" app from your smartphone's app store.
- Ensure your VD03 display is powered on.
- Open the BIKEGO+ app and follow the on-screen instructions to pair your display via Bluetooth.
Image 6.1: The VD03 display demonstrating its quick unlock feature via smartphone app connectivity.
7. Specifications
Below are the technical specifications for the Varstrom VD03 display:
| Feature | Specification |
|---|---|
| Screen Size | 1.5" LED Screen (38 mm) |
| Holder Size (Handlebar Diameter) | 22.2 mm |
| Connector Type | 5-pin Triangular (CAN Bus) |
| Communication Protocol | CAN Bus |
| Voltage Compatibility | 12V / 24V / 36V / 48V / 52V / 60V |
| PAS Levels | 0-3, 0-5, 0-9 (Optional) |
| Waterproof Rating | IPX7 |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
| Cable Length | 200 mm (7.87 inches) |
| Dimensions (L*W*H) | Approx. 48mm * 26mm * 45mm (1.88" * 1.02" * 1.77") |
| Weight | Approx. 50 grams |
| USB Port | No |
| Light-sensitive | No |
| Advanced Password | 2020 (Default) |
Image 7.1: Visual representation of the VD03 display's dimensions and key specifications.
8. Maintenance
Proper maintenance ensures the longevity and reliable operation of your VD03 display.
- Cleaning: Wipe the display screen and body with a soft, damp cloth. Avoid using abrasive cleaners or solvents that could damage the plastic or screen.
- Water Exposure: While the display is IPX7 waterproof, it is not designed for submersion or extreme weather conditions. Avoid prolonged exposure to heavy rain or direct water jets.
- Cable Inspection: Periodically check the display cable and connector for any signs of wear, cuts, or corrosion. Ensure connections remain secure.
- Storage: When not in use for extended periods, store the e-bike and display in a dry, temperate environment, away from direct sunlight and extreme temperatures.
9. Troubleshooting
If you encounter issues with your VD03 display, refer to the following common problems and solutions:
- Display Does Not Power On:
- Check if the e-bike battery is charged and properly connected.
- Ensure the 5-pin connector between the display and motor is securely fastened.
- Verify that your motor uses the CAN Bus protocol, not UART.
- No Speed Reading or Incorrect Data:
- Check the speed sensor connection on your motor.
- Ensure the wheel size setting in the display is correctly configured.
- PAS Levels Not Changing:
- Verify the "+" and "-" buttons are functioning correctly.
- Check for any error codes displayed on the screen (refer to the full manual for code meanings).
- App Connectivity Issues:
- Ensure Bluetooth is enabled on your smartphone and the display.
- Restart both the display and your smartphone.
- Make sure the "BIKEGO+" app is updated to the latest version.
For more detailed troubleshooting or persistent issues, please refer to the comprehensive user manual or contact Varstrom customer support.
10. Packing List
The following items are typically included in the Varstrom VD03 package:
- Varstrom VD03 LCD Display (x1)
- Mounting Bracket (pre-attached or separate)
- User Manual (x1)
Image 10.1: Contents of the Varstrom VD03 display package.
11. Additional Resources
For a more comprehensive guide and detailed instructions, please refer to the official PDF manual:
12. Warranty and Support
Varstrom products are manufactured with quality and reliability in mind. For warranty information, technical support, or service inquiries, please contact your retailer or visit the official Varstrom website. Keep your proof of purchase for warranty claims.
Manufacturer: Shenzhen Yihang Cross-border E-commerce Co., Ltd.
