1. Introduction
This user manual provides essential information for the safe operation, assembly, maintenance, and troubleshooting of your Segway-Ninebot D28D Electric Scooter. Please read this manual thoroughly before your first ride to ensure optimal performance and safety.

Image 1.1: The Segway-Ninebot D28D Electric Scooter, showcasing its red and black design with large pneumatic tires.
2. Safety Guidelines
Operating an electric scooter carries inherent risks. To minimize these risks, always adhere to the following safety precautions:
- Always wear a helmet and other protective gear (knee pads, elbow pads) when riding.
- Familiarize yourself with local laws and regulations regarding electric scooter usage.
- Do not ride under the influence of alcohol or drugs.
- Maintain a safe speed and distance from other vehicles and pedestrians.
- Avoid riding in adverse weather conditions (heavy rain, snow, ice).
- Ensure the scooter is in good working condition before each ride, checking brakes, tires, and battery level.
- The maximum load capacity for the D28D model is 120 kg. Do not exceed this limit.
- This scooter is designed for adults.
3. Package Contents
Upon opening the package, verify that all the following items are included:
- Segway-Ninebot Kickscooter D28D
- Charger
- User Manual
If any components are missing or damaged, please contact your retailer or Segway-Ninebot customer service.
4. Assembly and Setup
The Segway-Ninebot D28D Kickscooter comes largely pre-assembled. Follow these steps for final setup:
- Unfolding the Scooter: Carefully lift the stem until it locks into place. Ensure the folding mechanism is securely engaged.
- Handlebar Attachment: If the handlebars are not already attached, connect them to the stem and tighten any screws as instructed in the quick start guide (refer to the included manual for detailed diagrams).
- Initial Charge: Before your first ride, fully charge the scooter's battery. Refer to the "Charging the Battery" section for instructions.
- Tire Pressure Check: Ensure the 10-inch pneumatic tires are inflated to the recommended pressure for optimal performance and safety.

Image 4.1: The Segway-Ninebot D28D Electric Scooter folded and stored in a car trunk, demonstrating its portability.

Image 4.2: Close-up of the front wheel of the D28D, highlighting the pneumatic tire designed for comfort over obstacles like speed bumps.
5. Operating Instructions
5.1 Powering On/Off
- To Power On: Press and hold the power button on the LED display for a few seconds.
- To Power Off: Press and hold the power button again until the display turns off.
5.2 LED Display Overview
The integrated LED color display shows important information such as speed, battery level, and riding mode.

Image 5.1: Close-up of the handlebar display on the Segway-Ninebot D28D, showing speed, battery, and mode indicators.

Image 5.2: A detailed view of the LED color display, indicating current speed, battery status, and selected riding mode (ECO, D, S).
5.3 Riding the Scooter
- Kick-Start: Place one foot on the footboard and push off with the other foot to gain some initial momentum.
- Accelerate: Once moving, gently press the throttle lever to accelerate.
- Braking: The D28D features a dual braking system: an electronic anti-lock braking system (E-ABS) on the front wheel and a drum brake on the rear wheel, both operated by a single lever. Squeeze the brake lever to slow down or stop.
- Turning: Lean slightly in the direction you wish to turn and gently steer the handlebars.

Image 5.3: Two individuals riding Segway-Ninebot D28D scooters on a scenic path, demonstrating typical usage.
6. Riding Modes
The D28D offers four distinct riding modes, selectable via the power button on the display:
- Energy Saving Mode (ECO): Speed up to 15 km/h. This mode maximizes battery life and range.
- Standard Mode (D): Offers a balanced combination of speed and range, suitable for daily commutes.
- Sport Mode (S): Provides maximum power and acceleration, reaching speeds up to 20 km/h.
- Pedestrian Mode: Speed up to 5 km/h. Designed for situations where you need to walk alongside your scooter.
7. Charging the Battery
To charge your Segway-Ninebot D28D:
- Ensure the scooter is powered off.
- Locate the charging port, typically covered by a rubber flap.
- Connect the charger to the charging port, then plug the charger into a standard power outlet.
- The charging indicator on the charger will typically show red during charging and turn green when fully charged.
- A full charge takes approximately 5 hours for the 275 Wh lithium battery.
- Disconnect the charger once charging is complete and securely close the charging port cover.
Important: Only use the official charger provided with your scooter. Do not charge unattended.
8. Maintenance
Regular maintenance ensures the longevity and safe operation of your scooter.
8.1 Cleaning
Wipe the scooter clean with a soft, damp cloth. Do not use alcohol, gasoline, kerosene, or other corrosive chemical solvents. Do not wash the scooter with a high-pressure water jet.
8.2 Tire Care
Regularly check the tire pressure and inflate as needed. Inspect tires for wear and tear, and replace them if necessary. The D28D is equipped with 10-inch pneumatic tires.

Image 8.1: A close-up of the D28D's pneumatic tire, demonstrating its tread pattern and suitability for various conditions, including wet surfaces.
8.3 Brake System
Periodically check the brake lever for proper function and ensure the electronic and drum brakes are responsive. Adjust or seek professional service if braking performance degrades.
8.4 Storage
Store the scooter in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, ensure the battery is charged to about 50-70% and recharge it every 30-60 days to prevent deep discharge.
9. Troubleshooting
This section addresses common issues you might encounter with your D28D Kickscooter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Scooter does not power on. | Low battery; loose connections. | Charge the battery; check all connections. |
| Reduced range or power. | Low battery; improper tire pressure; riding uphill frequently. | Fully charge battery; inflate tires to correct pressure; adjust riding style. |
| Brakes feel weak. | Brake cable adjustment needed; worn brake pads. | Adjust brake cable tension; inspect and replace brake pads if worn. Consult a professional if unsure. |
| Unusual noises during operation. | Loose components; debris in wheels. | Inspect scooter for loose parts and tighten; remove any debris from wheels. |
For issues not listed here or if solutions do not resolve the problem, please contact customer support.
10. Specifications
| Feature | Detail |
|---|---|
| Model Name | Segway Ninebot Kickscooter D28d |
| Brand | Segway-Ninebot |
| Age Range | Adult |
| Max Speed | Up to 20 km/h |
| Max Range | Up to 28 km |
| Motor Power | 300 W |
| Battery | 275 Wh Lithium-ion |
| Charging Time | Approx. 5 hours |
| Max Load Capacity | 120 kg |
| Tire Size | 10 inches (Pneumatic) |
| Brake System | Front E-ABS, Rear Drum Brake |
| Frame Material | Aluminum |
| Dimensions (L x W x H) | 114 x 48 x 50 cm (unfolded) |
| Weight | 15.3 kg |
| Special Features | Light, Wide Platform, Foldable, Anti-slip Surface |
11. Warranty and Support
For warranty information, please refer to the specific warranty card or documentation included with your purchase. Segway-Ninebot products typically come with a limited warranty covering manufacturing defects.
If you require technical support, have questions about operation, or need to report a defect, please contact Segway-Ninebot customer service through their official website or the contact information provided in your purchase documentation.
Please note that the included user manual may not be guaranteed in English, but this document aims to provide comprehensive instructions in English.





