Varstrom VD618 E-Bike Display User Manual

1. Introduction

The Varstrom VD618 3.5" LCD E-Bike Display is designed to provide a comprehensive and user-friendly interface for your electric bicycle. It offers essential riding data, control functions, and enhanced safety features, making your e-bike experience more enjoyable and efficient.

Figure 1: Varstrom VD618 E-Bike Display and Remote Control

2. Compatibility

The VD618 display is specifically designed for BAFANG CAN protocol mid-motor systems, including models such as M200, M300, M400, M410, M420, M500, M560, M510, M600, M620, M800, and M820. It supports universal voltage compatibility across 36V, 48V, 52V, 60V, and 72V systems.

Important Note:

• This display uses the CAN protocol and is not compatible with UART protocol motors.
• UART protocol motors typically have a 5-pin circular connector. The VD618 requires a 5-pin male triangular connector for the 1T4 cable.
• Using an adapter cable or modifying connectors will not resolve compatibility issues between CAN and UART protocols. Please verify your motor's connector type before purchase.

Figure 2: CAN Protocol Compatibility Overview

3. Key Features

• Universal Voltage Compatibility: Supports 36V/48V/52V/60V/72V Bafang CAN protocol mid-drive motors.
• Vivid 3.5" Color LCD Screen: Anti-glare technology for readability in direct sunlight, with adjustable 1-3 level backlighting.
• IP66 Weatherproof Durability: Dustproof and waterproof rating ensures reliable performance in various weather conditions.
• Smart Auto Headlight & Safety: Built-in light sensor automatically activates the front headlight in low-light environments.
• Convenient TYPE-C Charging Port: Integrated 5V1A Type-C port for charging smartphones, Bluetooth speakers, or GPS devices.
• Ergonomic Controls: 22.2mm handlebar-mounted buttons for easy access.
• Pre-configured PAS Levels: Presets for 3/5/9 PAS level speed limits.
• Hidden Speed Lock: 25 km/h quick-lock feature accessible via "+/-" keys.
• Bluetooth 5.0: For potential future connectivity or data transfer.
• Navigation Function: Integrated navigation capabilities.
• Password Setting: For enhanced security.

Figure 3: VD618 Feature Overview

4. Specifications

Figure 4: VD618 Display Dimensions and Key Specifications

5. Setup and Installation

5.1 Handlebar Mounting

The VD618 display is designed to fit handlebars with diameters of 22.2mm, 25.4mm, and 31.8mm. Securely attach the display and its remote control to your handlebar using the provided clamps. Ensure the display is positioned for optimal visibility and the remote control is within easy reach.

5.2 Wiring Connection

The display connects to your e-bike's system via a 5-pin male triangular connector. This connector should mate with the female 5-pin triangular connector of your 1T4 cable. It is crucial to ensure that your motor's wiring diagram matches the display's requirements. Incompatible wiring will prevent the display from functioning correctly.

Figure 5: Cable Parameters and Wiring Diagram

Wiring Diagram Details:

• Female 5 Pins (EB1T4 Connector):
  • Green: CAN H
  • Black: GND
  • Brown: P+
  • Orange: Key signal
  • White: CAN L
• Male 5 Pins (Display Connector):
  • Green: CAN H
  • Black: GND
  • Brown: P+
  • Orange: Key signal
  • White: CAN L

Attention: If the wiring diagram is different, the display will not work.

6. Operating Instructions

6.1 Riding Interface Overview

Figure 6: Riding Interface Elements

The display provides real-time information about your ride:

• Status: Real-time riding status, including Front Light, Brake, Low Battery Alert, and Error codes.
• Battery Status: Residual Battery Percentage and Voltage (VOL).
• Multi-Function Section: Displays ODO (total range), TRIP (single ride range), MAX (max. speed), AVG (average speed), TIME (riding time), Wh (motor power), CUR (current), etc.
• Assist Level: Shows the current Pedal Assist System (PAS) level. 5 levels by default, with 6 modes available.
• Speed Display: Real-time speed (SPEED), max speed (MAX), average speed (AVG) in km/h or mph.
• Walk Mode: Indication for walk assist function.

Figure 7: VD618 Digital Display Full Overview

6.2 Button Functions

The remote control features several buttons for easy operation:

• Power Button: Turns the display on/off.
• '+' Button: Increases PAS level, navigates menus up, or activates the 25 km/h quick-lock feature when pressed with '-'.
• '-' Button: Decreases PAS level, navigates menus down, or activates the 25 km/h quick-lock feature when pressed with '+'.
• 'i' Button: Cycles through display information (e.g., ODO, TRIP, MAX, AVG, TIME).
• Headlight Button: Manually controls the front light.

6.3 Automatic Backlight and Headlight

The display features an automatic backlight that adjusts its intensity based on ambient light conditions. The built-in light sensor also activates the front headlight automatically in low-light environments, enhancing safety during night rides.

Figure 8: Automatic Backlight Function

6.4 USB Type-C Charging

A 5V1A Type-C charging port is integrated into the display, allowing you to charge external devices like smartphones or GPS units during your ride. This port serves as a convenient power source for your accessories.

Figure 9: Built-in USB Type-C Charging Port

6.5 Advanced Settings

The display includes advanced settings that can be accessed with a password. The default advanced password is 1919. Refer to the full product manual (if available) for detailed instructions on navigating and adjusting these settings, which may include parameters like wheel size, speed limits, and battery voltage settings.

7. Maintenance

• Cleaning: Use a soft, damp cloth to clean the display screen and body. Avoid abrasive cleaners or solvents that could damage the screen or casing.
• Waterproof Rating: The display has an IP66 waterproof rating, meaning it is protected against powerful water jets and dust. While it can withstand rain and splashes, avoid submerging the display in water.
• Connections: Periodically check all cable connections to ensure they are secure and free from corrosion. Loose connections can lead to intermittent functionality.
• Storage: When not in use for extended periods, store the e-bike and display in a dry, temperate environment.

8. Troubleshooting

• Display Not Turning On: Check battery level. Ensure all connections are secure, especially the main power cable to the display.
• No Speed Reading: Verify that the speed sensor is correctly installed and aligned with the magnet on the wheel. Check sensor cable connection.
• Error Codes: If an error code appears on the screen, consult the full product manual for a list of codes and their corresponding solutions. Common issues might relate to motor, controller, or sensor malfunctions.
• Inconsistent Functionality: Ensure all wiring is correctly connected and undamaged. Check for any loose components.

9. User Tips

• Verify Compatibility: Always double-check your motor's protocol (CAN vs. UART) and connector type before purchasing or installing the display to avoid compatibility issues.
• Secure Connections: Ensure all electrical connections are firmly seated and protected from moisture to prevent intermittent operation or damage.
• Remote Control Availability: If the remote control switch needs replacement, contact customer support or an authorized dealer for compatible parts.

10. Warranty and Support

The Varstrom VD618 E-Bike Display comes with a 1-year warranty. For technical support, troubleshooting, or warranty claims, please contact your seller or an authorized service center. Bafang and its authorized agents, such as Greenergy, offer global service and support.

Maintain Point: Poland

Bafang has sales and service centers in various locations including the Netherlands, USA, Germany, France, Italy, Denmark, Taiwan, and China, with a factory in Poland focusing on mid-motor systems for European markets. Greenergy is an official authorized agent seller for Bafang products.

Figure 10: Bafang Global Service Locations