1. Product Overview
The APT LCD-750S is an intelligent LCD display designed for electric bicycles, providing essential riding information and control functions. It is compatible with 24V, 36V, and 48V e-bike systems.
Figure 1: Angled view of the LCD-750S display unit.
Figure 2: Front view of the LCD-750S display showing speed, battery, and trip information.
Figure 3: Control pad for the display with '+', '-', 'M', and 'Power' buttons.
2. Setup and Installation
This display is designed for handlebar mounting. Ensure your e-bike system is compatible with 24V, 36V, or 48V power supplies.
2.1 Handlebar Mounting
The display is designed to fit handlebars with diameters of ø22.2mm, ø25.4mm, or ø31.8mm. Securely attach the display to your handlebar using the provided bracket and fasteners.
Figure 4: Dimensional drawing of the display and its handlebar mount.
2.2 Electrical Connection
The display communicates via CAN BUS/UART. Connect the display to your e-bike controller using the appropriate cable. As this is a customized product, it is highly recommended to contact the seller for specific wiring instructions and compatibility details for your e-bike system immediately after placing your order.
2.3 Initial Power-On
Once installed and connected, power on your e-bike. The display should illuminate and show initial riding data. If the display does not power on or shows an error, refer to the Troubleshooting section.
3. Operating Instructions
The LCD-750S display provides comprehensive information and allows for various settings adjustments.
3.1 Displayed Information
- Speed: Real-time speed (RT SPEED), Maximum speed (MAX SPEED), Average speed (AVG SPEED).
- Mileage: Odometer (ODO), Trip distance (Trip), Trip time (Time), Remaining range (Range).
- Power Indicator: Shows current battery level.
- Error Code Indicator: Displays codes for system malfunctions.
- Smart Battery Indicator: Provides detailed battery status.
- PAS Level: Indicates the current Pedal Assist System level (e.g., 3-PAS, 5-PAS, 6-PAS, 9-PAS, depending on configuration).
- Brake Indicator: Shows when brakes are applied.
3.2 Button Functions (Refer to Figure 3)
- Power Button: Press and hold to turn the display ON/OFF. A short press may cycle through display modes or activate certain functions.
- 'M' Button (Mode): Used to switch between different display modes (e.g., ODO, Trip, Time) or to enter/exit settings menus.
- '+' Button: Increases values in settings or increases the PAS level.
- '-' Button: Decreases values in settings or decreases the PAS level.
3.3 Adjusting Settings
- KM/Mile Unit: This setting is adjustable according to user preference. Typically accessed via the 'M' button to enter settings, then using '+' and '-' to select, and 'M' or Power to confirm.
- Backlight Brightness: The backlight has 5 adjustable sections. Adjust this in the settings menu for optimal visibility.
- PAS Levels: Cycle through available PAS levels using the '+' and '-' buttons during riding.
4. Maintenance
To ensure the longevity and optimal performance of your APT LCD-750S display, follow these maintenance guidelines:
- Cleaning: Use a soft, damp cloth to clean the display surface. Avoid abrasive cleaners or solvents that could damage the screen or casing.
- Environmental Protection: The display has an IP65 rating, meaning it is protected against dust ingress and low-pressure water jets from any direction. However, avoid submerging the unit in water or exposing it to high-pressure washing.
- Temperature: Operate and store the display within the specified temperature ranges (-20℃ to 60℃ for operation, -30℃ to 70℃ for storage) to prevent damage.
- Cable Inspection: Periodically check all cables and connectors for signs of wear, damage, or loose connections.
5. Troubleshooting
If you encounter issues with your display, refer to the following common problems and solutions:
- Display Not Powering On: Check all cable connections to ensure they are secure. Verify that your e-bike battery is charged and providing power.
- Error Code Displayed: The display features an error code indicator. While specific codes are not listed here, consult your e-bike controller's manual or contact the seller with the displayed code for diagnosis.
- "Communication Error" Message: This indicates a problem with the data exchange between the display and the controller. Check the communication cable for damage or loose connections. Ensure the display and controller are compatible.
- Incorrect Speed/Mileage Readings: Ensure the input wheel diameter setting is correctly configured in the display's settings.
If troubleshooting steps do not resolve the issue, please contact the seller for further assistance.
6. Specifications
Figure 5: Specifications and Dimensions Table (Part 1)
Figure 6: Specifications and Dimensions Table (Part 2)
| Category | Parameter | Value |
|---|---|---|
| Core Data | Screen | LCD |
| Display Type | Segment | |
| Nominal Voltage | 24V/36V/48V | |
| Support Modes | 0-3/0-5/0-9 (Optional) | |
| Mounting Parameters | Communication | CAN BUS/UART |
| Dimensions (L x W x H) | 110mm x 68mm x 63mm | |
| Handlebar for Holding | ø22.2/25.4/31.8mm | |
| Display Information | Current Speed (km/h) | YES |
| Maximum Speed (km/h) | YES | |
| Average Speed (km/h) | YES | |
| Duration Single Trip | YES | |
| Distance Single Trip | YES | |
| Total Distance | YES | |
| Reset Duration S.T. | YES | |
| Reset Distance S.T. | YES | |
| Battery Level | YES | |
| Communication Error | YES | |
| Outdoor Temperature | NO | |
| General | Backlight | Adjustable (5 sections) |
| Input Wheel Diameter | YES (Configurable) | |
| Electrical | Rated Working Current | 10mA |
| Maximum Working Current | 30mA | |
| Off-state Leakage Current | <1μA | |
| Environmental | Working Temperature | -20℃ ~ 60℃ |
| Storage Temperature | -30℃ ~ 70℃ | |
| Tests & Certifications | IP-Code | IP65 |
| Certifications | CE/EN15194 Rohs |
7. User Tips
- Speed Limit Removal: Some e-bike systems have speed limits set in the controller, which the display reflects. If you wish to adjust or remove speed limits, this is typically done through the e-bike controller's settings, not directly on the display. Consult your e-bike's main controller manual or contact the seller for guidance on advanced settings.
- Connector Compatibility: Before purchasing or installing, verify the connector type (e.g., 5-pin, 6-pin) required by your e-bike controller to ensure proper fit and function.
- Customization: As this is a customized product, always provide your e-bike's specific information to the seller upon order to ensure you receive the correct configuration and to get tailored support.
- Defective Product Handling: If you receive a defective product, do not sign the shipping bill. Take photos or videos of the defect and contact the seller immediately for resolution.
8. Warranty and Support
For any questions, problems, or support needs regarding your APT LCD-750S display, please contact the seller directly. They are best equipped to provide assistance and resolve any issues you may encounter.
Return Policy: If you are not satisfied with the product, you may be eligible for a return within 7 days of receiving the goods, provided the return is due to product defects, damage, or seller fault. Returned items must remain in the same condition as received. Please contact the seller before initiating any return.
