1. Introduction
The Varstrom Electric Bike Display is a smart instrument designed to enhance your e-bike riding experience. It provides essential real-time data, allows for motor setting customization, and offers navigation integration (on select models) through Bluetooth connectivity. This display is compatible with various Bafang and Tongsheng motors, supporting both UART and CAN communication protocols.
Figure 1: Overview of available Varstrom Electric Bike Display models.
2. Compatibility
Ensuring compatibility with your e-bike motor is crucial for proper display function. Varstrom displays support both UART and CAN communication protocols for Bafang and Tongsheng motors. Please identify your motor's protocol before selecting a display model.
2.1 Bafang CAN Bus Motors
This system is designed for the latest generation of Bafang mid-drive motors using the advanced CAN protocol, offering a stable data connection and full feature sets.
- Compatible with: BBS01B, BBS02B, BBSHD, M315 (G340), M615 (G320).
Figure 2: Bafang motor compatibility for CAN Bus displays.
2.2 Bafang UART Protocol Motors
This classic protocol supports a wide range of powerful Bafang hub motors and some older mid-drive models, ensuring reliable performance.
- Compatible with: G020/H400B (500W), G0900/H640 (750W), G062/H550 (1000W), SUTTO M092 (250W), Varstrom JYLT (1000W/1500W) hub motors.
2.3 Tongsheng UART Protocol Motors
Optimized for the popular torque-sensing Tongsheng mid-drive series, this display features the latest firmware version and system.
- Compatible with: TSDZ2B/TSDZ2, TSDZ8, TSDZ16 (250W-1000W models).
2.4 Tongsheng CAN Protocol & Modern Hub Motors
This is the new standard for the latest high-performance systems, including Varstrom's own advanced hub motors with torque sensing.
- Compatible with: Varstrom 125XVH, 125EVH, 95EVH, and TruckRun RN04 torque sensor hub motors.
Figure 3: Visual guide for UART vs CAN protocol connectors and motor compatibility.
Tip: If you are unsure about your motor's protocol, please consult your motor's manual or contact Varstrom customer support with your motor model name for verification.
3. Key Features
- Smart Connectivity: Integrated Bluetooth for smartphone pairing and advanced functionality (app features may vary by model).
- Real-time Data: Displays speed, battery level, distance, assistance level, and more.
- Multi-Language Support: Available in various languages for global users.
- Robust Build: Weather-resistant designs (IP66/IP67 rated) to withstand rain and dust.
- Easy Installation: Plug-and-play setup fits standard handlebars (22.2mm to 31.8mm).
- Customizable Settings: Adjust motor parameters and display preferences.
- Navigation Integration: Map navigation available on select models (e.g., EKD01).
- Touchscreen: Available on VD18MT and other advanced models.
4. Setup and Installation
4.1 Mounting the Display
- Choose a suitable position on your e-bike handlebar (typically near the left or right grip).
- Loosen the clamp screws on the display holder.
- Place the display on the handlebar and adjust its angle for optimal visibility.
- Securely tighten the clamp screws. Ensure the display is firm and does not rotate freely.
4.2 Wiring Connections
Proper wiring is essential for the display to function correctly. Refer to the specific wiring diagrams below based on your motor's protocol (UART or CAN) and ensure all connections are secure.
4.2.1 UART Protocol Wiring (5-Pin Female Round Connector)
Figure 4: UART Protocol 5-Pin Female Round Connector Wiring Diagram.
- Red: Positive
- Yellow: RXD (Receive Data)
- Green: TXD (Transmit Data)
- Orange: Display Lock Wire
- Black: Ground
This diagram shows the wiring of the display cable coming from the 1T4 cable. Confirm your motor's cable has the same wiring diagram. If the wiring diagram is different, the display will not work.
4.2.2 CAN Protocol Wiring (5-Pin Female Round Connector)
Figure 5: CAN Protocol 5-Pin Female Round Connector Wiring Diagram.
- Green: Green CAN H
- Black: Black GND
- Brown: Brown P+
- Orange: Orange Key Signal
- White: White CAN L
This diagram shows the wiring of the display cable coming from the 1T4 cable. Confirm your motor's cable has the same wiring diagram. If the wiring diagram is different, the display will not work.
4.3 Initial Power-On
After connecting the display, turn on your e-bike's battery. The display should power on automatically or by pressing the power button. Follow any on-screen prompts for initial setup, such as language selection or wheel size configuration.
5. Operating Instructions
5.1 Basic Functions
- Power On/Off: Press and hold the power button (usually located on the display or a separate control pad) for a few seconds.
- Change PAS Level: Use the '+' and '-' buttons to adjust the pedal assist level.
- Cycle Information: Short press the 'M' or 'i' button to cycle through different information displays (e.g., ODO, Trip, Max Speed, Avg Speed).
5.2 Quick Keys
Figure 6: Quick Key functions for various display models.
- Turn on Headlights: Long press the '+' or 'power' button.
- Activate Walk Assisted Mode: Long press the '-' or 'down' button.
- 25KM Speed Limit Switching:
- For most models: Press '+' and '-' buttons together.
- For VD03/VD18MT: Press 'Power' and '-' buttons together.
Note: The Bafang DPC080/DPC010 display does not feature a quick adjustment function for the 25 km/h speed limit. According to EU regulations, electric bicycles are prohibited from driving on public roads at speeds exceeding 25 kilometers per hour.
5.3 Bluetooth and App Connectivity
Many Varstrom displays feature Bluetooth connectivity, allowing you to connect to a dedicated smartphone app for enhanced control and data. The app can be used to customize motor settings, view detailed ride statistics, and integrate map navigation (on compatible displays like EKD01).
Video 1: Demonstration of Bafang DPC 010 and DPC 080 displays with app integration and navigation features.
To connect:
- Ensure Bluetooth is enabled on your smartphone.
- Download the official Varstrom or compatible Bafang/Tongsheng app.
- Follow the app's instructions to pair with your display.
6. Maintenance
- Cleaning: Wipe the display screen and body with a soft, damp cloth. Avoid using abrasive cleaners or solvents that could damage the screen or casing.
- Water Exposure: While the displays are IP66/IP67 waterproof, avoid prolonged submersion or high-pressure water jets. Ensure the USB/Type-C port cover (if present) is securely closed.
- Cable Inspection: Periodically check all cables and connectors for signs of wear, damage, or loose connections. Ensure they are clean and free of debris.
- Software Updates: If available, regularly update the display firmware via the smartphone app to ensure optimal performance and access to new features.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display does not turn on | Loose power connection, battery off, damaged cable/display | Check battery power. Ensure all cables are securely connected. Inspect cables for damage. |
| Incorrect speed/distance readings | Incorrect wheel size setting, faulty speed sensor | Verify wheel size setting in display menu. Check speed sensor connection and function. |
| No pedal assist (PAS) | PAS sensor issue, motor connection problem, low battery | Check PAS sensor and motor connections. Ensure battery is charged. |
| Bluetooth connection fails | Bluetooth off on phone/display, app issues, interference | Ensure Bluetooth is active on both devices. Restart app and display. Try pairing again. |
| Display shows error code | Specific system fault | Refer to the display's specific error code list (if available in the display menu or app) for detailed solutions. |
Important: If the wiring diagram used for connection is different from the motor's actual wiring, the display will not work. Always confirm wiring compatibility.
8. Specifications
Specifications may vary slightly between different display models. Please refer to the specific model's details for precise information.
| Feature | Specification |
|---|---|
| Indicator Panel Type | LCD / TFT (model dependent) |
| Working Voltage | DC 36V/43V/48V/52V/60V/72V (model dependent) |
| Working Temperature | -20°C ~ 60°C |
| Storage Temperature | -30°C ~ 70°C |
| Waterproof Rating | IP66 / IP67 (model dependent) |
| Holder Size | φ22.2mm / φ25.4mm / φ31.8mm (model dependent) |
| PAS Levels | 3/5/9 (model dependent) |
| Language Support | English, German, French, Italian, Spanish, Polish, Dutch, Czech (model dependent) |
| Connectivity | Bluetooth (on select models) |
| Charging Port | USB Port / Type-C (model dependent) |
Figure 7: Detailed specifications for Bafang CAN Bus displays.
Figure 8: Detailed specifications for Tongsheng UART displays.
9. Warranty and Support
Varstrom is committed to providing high-quality products and excellent customer service.
9.1 Warranty Period
Figure 9: Varstrom Warranty Service Overview.
- Motor & Battery: 12 months quality warranty.
- Parts & Accessories (including displays): 1 month quality warranty.
Under Warranty:
- If there is any quality problem within 6 months (based on delivery date), all warranty costs (repair cost, material cost, shipping cost, etc.) are responsible by the seller.
- If there is any quality problem more than 6 months, not more than 12 months (based on delivery date), the repair cost and material cost are responsible by the seller, the shipping cost is responsible by the buyer.
Out of Warranty:
- If the warranty period is exceeded, for products from our store, we can continue to provide after-sales service, but the cost will be responsible by the buyer. The exact cost depends on the specific issue.
9.2 Support
For any questions, technical assistance, or warranty claims, please contact Varstrom customer support. Our team is ready to help you verify compatibility, troubleshoot issues, and provide solutions.
10. User Tips
- Always ensure your e-bike battery is fully charged before long rides to avoid unexpected power loss to the display.
- Familiarize yourself with the quick keys for headlights and walk assist for safer and more convenient riding.
- If your display supports a smartphone app, explore its features to customize your riding experience and access detailed statistics.
- Regularly check for firmware updates for your display to benefit from performance improvements and new functionalities.