1. Setup
Unboxing and Initial Assembly
Upon receiving your WINDHORSE Moped Electric Bike, carefully remove all components from the packaging. The bike comes with a charger, charger cable, essential tools, and a manual. Ensure all parts are present before proceeding with assembly.

Figure 1: Contents of the product package, including the bike, charger, tools, and manual.
Battery Installation and Charging
The 48V 18AH Lithium-Ion battery is removable for convenient charging. To charge, connect the charger to the battery and a power outlet. Charging typically takes 2-3 hours. For optimal battery life, ensure the battery is fully charged before the first use.

Figure 2: The high-capacity battery, which is removable for charging convenience.

Figure 3: The two available charging methods for the bike's battery.
2. Operating
Riding Modes and Gears
The WINDHORSE Moped Electric Bike offers three riding modes: pure bicycle mode, pedal assist mode (with 5 intensity levels), and pure electric mode. The 7-speed mechanical gearing system allows for sensitive shifting, making uphill rides easier. The intelligent AI algorithms automatically power down the bike in the event of tipping, enhancing safety.

Figure 4: Key operational components including the 7-speed gear shifter and hydraulic brake lever.
Motor and Speed
Equipped with a 1000W geared hub motor, the bike can reach speeds of up to 20 MPH and handle 30° slopes. It also features cruise control, which activates when a constant throttle rate is maintained for 8 seconds.

Figure 5: The powerful 1000W geared hub motor and its performance metrics.
Safety Features: Lights and Power Outage
Automatic UV sensing headlights turn on in dim light conditions, ensuring rider safety. The headlight is waterproof with double LED high power lights for a brighter field of view. Electronic taillights activate during braking. The bike also supports dumping power outage, automatically powering down if it tips over.

Figure 6: The bike's intelligent dumping power outage feature for enhanced safety.
Video 1: A rider demonstrating the WINDHORSE D3 Electric Bike's performance and features, including speed tests, pedal assist, and braking capabilities on various terrains.
3. Maintenance
General Care
Regularly inspect your electric bike for any loose parts, wear and tear, or damage. Keep the bike clean and dry, especially the electrical components. Store the bike in a cool, dry place away from direct sunlight and extreme temperatures.
Tire and Suspension Care
The 20" fat tires are designed for various terrains and provide increased shock absorption. Regularly check tire pressure and inspect for punctures or damage. The adaptive damping system reduces shock based on rider weight and road conditions, enhancing ride comfort. Ensure the suspension components are clean and free from debris.

Figure 7: The durable 20" x 4" anti-slip fat tires, suitable for diverse terrains.

Figure 8: The full suspension system, providing comfort and stability on various surfaces.
4. Troubleshooting
Common Issues and Solutions
- Bike not powering on: Check battery charge level and ensure it is properly seated. Verify all connections are secure.
- Motor not assisting: Ensure the bike is not in parking mode (P mode). Press the brakes to disengage parking mode. Check pedal assist level on the display.
- Inaccurate speed display: This may require adjusting the wheel diameter setting in the bike's smart display. Refer to customer support for advanced settings access.
- Reduced range: Ensure the battery is fully charged. Riding conditions (terrain, rider weight, temperature) can affect range.
Frequently Asked Questions
- How about the delivery time? Our warehouse is located in California, after receiving your payment, we will ship your item just 1 working day. But the Express delivery time depends to distance, usually are 3-5 days.
- How long is the service time of the e-bikes and e-scooters? Our items come with a 12-month service time.
- How about the customer and repair service? We have professional customer and repair services located in the USA. After receiving your message, our service team will reply within 24 hours.
5. Specifications
| Feature | Specification |
|---|---|
| Bike Type | Electric Bike |
| Age Range (Description) | Adult |
| Brand | WINDHORSE |
| Number of Speeds | 7 |
| Color | Grey |
| Wheel Size | 20 Inches |
| Frame Material | Aluminum |
| Suspension Type | Dual |
| Special Feature | Hydraulic Disc Brake |
| Included Components | Tool Kit |
| Item Weight | 61.7 Pounds |
| Maximum Weight Recommendation | 330 Pounds |

Figure 9: Detailed dimensions and weight specifications of the bike.
6. Warranty and Support
The WINDHORSE Moped Electric Bike comes with a 12-month warranty. For any after-sales questions or support, please contact our professional after-sales team located in the USA. Our customer service team will reply within 24 hours of receiving your feedback.
Please note that our warehouse is located in California. Some remote areas, such as Hawaii and Alaska, may not include freight. If delivery to these remote areas is required, please contact customer service to discuss freight in advance.
For additional information, you may refer to the official User Manual (PDF).







