1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your C500B LCD Electric Bicycle Display. Please read this manual carefully before using the product to ensure proper function and safety. The C500B display is designed to provide essential information and control for your electric bicycle system.
2. Safety Information
⚠ Disclaimer:
Please be aware of potential fire risks and strictly follow the instruction manual for charging and storage of any connected components. Always ensure proper installation and handling of electrical components to prevent damage or injury.
3. Product Features
- Integrated Design: Assembled on the left side of the handlebar, with key buttons integrated into the screen unit.
- Large Display: Features a 3.5-inch screen for clear and easy viewing of information.
- USB Charging Port: Provides a 600 mA charging current output for mobile devices.
- User-Friendly Controls: Easy-to-use buttons for simple control and an enjoyable riding experience.
- Durable Construction: Equipped with 2 pieces of PMMA to ensure waterproof housing and a good appearance.
- Certifications: CE / ROHS / IP65 certified, ensuring quality and protection against dust and water jets.

4. Specifications
| Parameter | Value |
|---|---|
| Rated Voltage | 24V, 36V, or 48V |
| Rated Work Current | 10mA |
| Switch Max Current Output | 200mA |
| Work Mode | UART or CAN |

Dimensions
- Length: 98 mm
- Height: 55 mm
- Width: 63 mm
- Thickness: 12.80 mm

5. Installation
The C500B display is designed for left-side handlebar mounting, with the control buttons integrated into the screen unit. Due to the custom-made nature of this product, it is crucial to ensure compatibility with your specific electric bicycle system.
Important Installation Note:
Since this product is custom-made, please contact the merchant immediately after placing your order to ensure accurate matching with your electric bicycle. Failure to communicate specific product parameters may result in the product being manufactured and shipped according to regular specifications.
- Mounting: Securely attach the display to the left side of your bicycle's handlebar using the integrated clamp. Ensure it is positioned for easy viewing and access to buttons.
- Wiring: Connect the display's cable to the appropriate port on your e-bike controller or motor kit. Ensure the connection is firm and waterproof. Refer to your e-bike's main wiring diagram for specific port identification.
- Power On: After installation, power on your e-bike system to check if the display functions correctly.



6. Operating Instructions
The C500B display features an intuitive interface with several indicators and control buttons. Refer to the diagram below for a visual guide to the display elements and their functions.

Button Functions:
- ON/OFF (Power Button): Press and hold to power the display on or off.
- SET Button: Used to enter settings menus and confirm selections.
- UP Button (+): Increases values, navigates up in menus, or increases PAS level.
- DOWN Button (-): Decreases values, navigates down in menus, or decreases PAS level.
Display Indicators:
- Riding Mode Selection: Indicates the current riding mode (e.g., ECO, NORMAL, SPORT).
- Speed Display: Shows current speed in KM/H or MPH.
- Backlight Indicator: Shows if the display backlight is active.
- 6KM/H Work: Indicates the 6 km/h walk assist mode is active.
- Error Code Indicator: Displays error codes if a system fault occurs.
- Battery Indicator:
- Battery residual capacity indicator.
- Battery voltage display.
- Battery capacity percentage (without this function by default).
- Battery charging and discharging times (without this function by default).
- Mobile Phone Charging Indicator: Shows when a device is charging via the USB port.
- Cable Definition: (Internal system information, not typically user-adjustable).
- Auto Sleep: The display will automatically enter sleep mode after 5 minutes of inactivity to conserve power.
- PAS Level Selection: Indicates the current Pedal Assist System level.
- SET Operation: (Refers to the function of the SET button).
- Distance Indicator:
- Total distance (ODO).
- Trip distance.
- Remaining distance (without this function by default).
- Trip Time Indicator: Displays the duration of the current trip.
7. Maintenance
- Cleaning: Use a soft, damp cloth to clean the display screen. Avoid abrasive cleaners or solvents that could damage the screen or housing.
- Water Exposure: While the display is IP65 rated (protected against dust and low-pressure water jets), avoid submerging it in water or exposing it to high-pressure washing.
- Cable Inspection: Periodically check all cables and connections for wear, damage, or loose fittings. Ensure connections are secure to maintain proper function and prevent water ingress.
- Storage: When not in use for extended periods, store the e-bike and display in a dry, temperate environment.
8. Troubleshooting
If you encounter issues with your C500B display, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Display does not power on | Loose cable connection, e-bike battery low/off, display fault. | Check all connections, ensure e-bike battery is charged and on. If problem persists, contact support. |
| No speed reading | Speed sensor issue, magnet misalignment. | Check speed sensor and magnet position on the wheel. |
| Error code displayed | System malfunction (motor, controller, battery). | Note the error code and consult your e-bike's main manual or contact technical support for diagnosis. |
| USB charging not working | Device incompatibility, cable issue, display fault. | Try a different USB cable or device. Ensure the display is powered on. |
User Tips:
- Always ensure the display is securely mounted to prevent vibration damage during rides.
- Familiarize yourself with the button functions before riding to make quick adjustments safely.
- Regularly check the battery indicator to avoid unexpected power loss during your trip.
- Keep the USB port covered when not in use to maintain its waterproof integrity.
9. Warranty and Support
The C500B display comes with certain guarantees and support options:
- Returns: Free returns are available within 90 days of receipt.
- Damaged Items: If items are damaged upon arrival, a refund will be provided.
For any questions or problems, please contact the merchant or customer support for assistance. When reporting an issue, please provide your order number and, if possible, images or videos of the defective product.





