1. Introduction and Overview
The Varstrom VD03 Display is an advanced digital display unit specifically designed for BAFANG e-bike conversion kits. It provides essential riding data and allows for configuration of various e-bike parameters. Featuring a clear 1.5-inch HD LED screen and a robust IP67 waterproof rating, the VD03 ensures reliable performance in diverse conditions. Its triangular connector is engineered for seamless compatibility with BAFANG CAN protocol motors, including a wide range of mid-drive and the latest BBS series motors.

Figure 1.1: The Varstrom VD03 Display unit, showcasing its compact design and triangular connector.
2. Шайкештик
The VD03 display is designed for BAFANG motors utilizing the CAN protocol. It is compatible with the latest 2025 versions of BBS01B, BBS02B, and BBSHD mid-drive motors that have been upgraded to CAN. Additionally, it supports BAFANG mid-drive systems including M200, M400, M420, M500, M510, M600, M620, M625, M325, and M225.

Figure 2.1: Visual guide to VD03 display compatibility with various BAFANG motors and protocols.
3. Орнотуу жана орнотуу
3.1 Дисплейди орнотуу
The VD03 display is designed for standard handlebars with a diameter of 22.2 mm. The adjustable mount ensures a secure and perfect fit for most bicycles.
- Identify a suitable position on your handlebar, typically near the left grip.
- Loosen the screw on the display's mounting bracket.
- Place the bracket around the handlebar (22.2mm diameter).
- Tighten the screw securely until the display is firmly in place and does not rotate freely.

Figure 3.1: The VD03 display mounted on a standard 22.2mm handlebar.
3.2 Дисплейди туташтыруу
The VD03 display connects to your BAFANG e-bike kit via a 5-pin male triangular connector. Ensure the cable from your e-bike kit has a compatible female 5-pin triangular connector.
- Locate the corresponding 5-pin female triangular connector on your e-bike's wiring harness (typically from the 1T4 cable).
- Align the male connector of the VD03 display with the female connector from the e-bike kit.
- Gently push the connectors together until they click into place, ensuring a secure and waterproof seal.
- Маанилүү: Confirm that the wiring diagram of your motor's cable matches the display's wiring. If the wiring diagram is different, the display will not function correctly.

Figure 3.2: Detailed wiring diagram for the 5-pin CAN protocol connectors.
4. Дисплейди иштетүү
4.1 Дисплей функциялары
The 1.5-inch HD LED screen provides clear and easy-to-read data at a glance, even while riding. Key indicators include:
- Батарея деңгээлинин көрсөткүчү: Shows the current charge status of your e-bike battery.
- Техникалык тейлөө боюнча кеңештер: Alerts for routine maintenance or system issues.
- Real-time Speed Display: Учурдагы ылдамдыгыңызды көрсөтөт.
- Headlight Indication: Indicates if the e-bike's headlight is on.
- Bluetooth сүрөтчөсү: Bluetooth байланыш абалын көрсөтөт.

Figure 4.1: ашыкview of the VD03 digital display and its various indicators.
4.2 PAS Level Settings
The display supports multiple Pedal Assist System (PAS) level options, typically 0-3, 0-5, or 0-9, allowing you to customize the level of motor assistance.
4.3 Speed Limitation
The display allows for adjustable speed limitation settings, enabling compliance with local regulations or personal preferences.
4.4 Bike Go App Integration
For extended functionality and advanced settings, the VD03 display can connect to the 'Bike Go' application. Издөө "BIKEGO+" in your app store (App Store or Google Play) to download and install the app.
Through the Bike Go app, you can access and configure various parameters, including:
- Bike Nickname
- Bike Wheel Diameter
- Ылдамдыктын чеги
- Unit (KM/H or MPH)
- Автоматтык өчүрүү таймери
- Жардамчынын деңгээли
- Bluetooth Lock Level
- Privacy Policy and Terms of Service
- About App information
- Cleanup Trip data
- Instrument Upgrade

Figure 4.2: The Bike Go app interface, demonstrating advanced settings and real-time data.
5. Техникалык тейлөө
To ensure the longevity and optimal performance of your Varstrom VD03 display, follow these maintenance guidelines:
- Тазалоо: Дисплейдин экранын жана корпусун жумшак менен сүртүңүз, damp кездеме. Пластикке же экранга зыян келтириши мүмкүн болгон абразивдүү тазалоочу каражаттарды же эриткичтерди колдонуудан алыс болуңуз.
- Суу каршылык: The display has an IP67 waterproof rating, meaning it is protected against dust and can withstand immersion in water up to 1 meter for 30 minutes. However, it is not designed for prolonged submersion or high-pressure water jets. Avoid direct spraying with high-pressure washers.
- Сактагыч: When not in use for extended periods, store the e-bike and display in a dry, cool place, away from direct sunlight and extreme temperatures.
- Кабелдик текшерүү: Periodically check the display cable and connector for any signs of wear, damage, or corrosion. Ensure the connection remains secure.
6. Кыйынчылыктарды
If you encounter issues with your Varstrom VD03 display, consider the following common troubleshooting steps:
- Дисплей күйбөйт:
- Электр велосипединин аккумулятору заряддалганын жана туура туташтырылганын текшериңиз.
- Ensure all cable connections, especially the 5-pin triangular connector, are fully seated and secure.
- Verify that the wiring diagram of your motor's cable matches the display's wiring. A mismatch will prevent the display from working.
- Incorrect Speed/Data Display:
- Check the wheel diameter setting in the Bike Go app or display settings. Ensure it matches your bicycle's wheel size.
- Ensure the speed sensor on your e-bike motor is clean and properly aligned.
- Bluetooth туташуу маселелери:
- Смартфонуңузда Bluetooth иштетилгенин текшериңиз.
- Дисплей күйгүзүлгөнүн текшериңиз.
- Try restarting both the display and your smartphone.
- Ensure you are using the correct 'BIKEGO+' app.
- Дисплей ката коддору: If the display shows specific error codes, refer to the Bike Go app or contact technical support for detailed explanations and solutions.
If these steps do not resolve the issue, please contact Varstrom customer support for further assistance.
7. Техникалык шарттар
Below are the technical specifications for the Varstrom VD03 Display:

Figure 7.1: Detailed dimensions and key specifications of the VD03 display.
| Өзгөчөлүк | Спецификация |
|---|---|
| Модель аты | VD03 CAN |
| Туташтыргыч түрү | Male 5 PIN (Triangular) |
| Протокол | БОЛОТ |
| Экран түрү | 1.5" HD LED |
| Тtage Шайкештик | 12V/24V/36V/48V/52V/60V |
| PAS Level Options | 0-3 / 0-5 / 0-9 (Optional) |
| Speed Limit Range | 0 Km/h ~ 99 Km/h (Adjustable) |
| Button Holder Diameter | Ø22.2 мм |
| Bluetooth | 5.2 + BLE (Optional) |
| Суу өткөрбөйт рейтинги | IP67 |
| Салмагы | 28г |
| Иштөө температурасы | -20°C ~ 70°C |
| Авто ӨЧҮК | 0-60 min (Optional) |
| Bluetooth кулпусу | Ооба |
| Тил | Англисче |
8. Кепилдик жана колдоо
Varstrom is committed to customer satisfaction and provides comprehensive support for the VD03 display:
- Кайтаруу саясаты: A 30-day return policy is offered from the date of purchase.
- Exchange/Repair Service: Enjoy a one-year exchange or repair service for manufacturing defects.
- Техникалык колдоо: Lifetime technical support is available. Varstrom has a local warehouse and a dedicated technical team ready to assist you promptly.
For any inquiries, technical assistance, or warranty claims, please contact the seller, Greenergia-EU, or Varstrom customer service directly.



