1. Introduction
This manual provides essential information for the safe operation, assembly, maintenance, and troubleshooting of your DUODIAN Electric Scooter F20Max. Please read this manual thoroughly before using the scooter to ensure optimal performance and safety.
The DUODIAN F20Max Electric Scooter is designed for adults, featuring a powerful 350W (500W peak) motor, a top speed of 19 MPH, and a range of up to 18 miles on a single charge. It is equipped with 8.5-inch maintenance-free solid tires, a dual braking system, and smart app control for enhanced functionality and safety.
2. Safety Information
Your safety is paramount. Always wear a helmet and appropriate protective gear when riding. Adhere to all local traffic laws and regulations. This scooter has been tested to UL2272 and UL2054 standards for safety.
- Always wear a helmet and protective gear (knee pads, elbow pads) when riding.
- Do not ride in heavy rain or through puddles deeper than 0.8 inches.
- Ensure all screws and components are securely fastened before each ride.
- Familiarize yourself with the braking system. The scooter features a double braking system: disc brakes and EABS regenerative anti-lock brakes.
- Use bright headlights and warning taillights for visibility, especially at night.
- Do not use the product while charging.
- Do not charge or use the battery once water damage has occurred.
- If not used for a long time, it is recommended to still charge every three months.
3. Package Contents
Verify that all items are present in the package:
- 1x DUODIAN Electric Scooter F20Max
- 1x Charger Adapter
- 1x Hexagon Wrench
- 1x User Manual
- 4x Screws (for handlebar assembly)
4. Assembly Instructions
The DUODIAN F20Max Electric Scooter comes partially assembled. Follow these steps to complete the assembly:
- Unfold the Scooter: Carefully lift the handlebar stem until it clicks into place. Secure the folding mechanism latch.
- Attach the Handlebars: Connect the wiring from the handlebar assembly to the main stem. Carefully feed the wiring into the stem.
- Secure the Handlebars: Align the handlebar unit with the stem and use the provided screws and hexagon wrench to firmly attach it. Ensure the brake lever is on the left side and the accelerator on the right. There are typically 6 screws for this attachment (2 on each side, 2 in front).

5. Charging Instructions
Before your first ride, fully charge the scooter's battery. The charging port is conveniently located on the front side of the scooter's deck.
- Locate the charging port on the scooter's deck, usually covered by a protective cap.
- Plug the charger adapter into a standard wall outlet.
- Connect the charging cable to the scooter's charging port. The indicator light on the charger will typically turn red during charging and green when fully charged.
- A full charge takes approximately 5 hours.
6. App Connection & Features
Enhance your riding experience by connecting your DUODIAN F20Max Electric Scooter to the dedicated smartphone application. The app allows for remote locking, speed mode adjustments, and real-time data monitoring.
- Download the App: Scan the QR code on the scooter's display or visit smartapp.tuya.com/tuyasmart to download the Tuya Smart app.
- Power On Scooter: Press and hold the power button on the scooter's display to turn it on.
- Connect via Bluetooth: Open the app on your smartphone and follow the on-screen instructions to connect via Bluetooth.
- Explore Features: Once connected, you can view battery level, current speed, adjust speed modes (Low, Medium, High), activate/deactivate cruise control, turn headlights/taillights on/off, and remotely lock the scooter to prevent theft.
Video 1: Official DUODIAN F20Max Electric Scooter overview, demonstrating key features including app connectivity and riding experience.
7. Operating Instructions
Familiarize yourself with the controls and practice in a safe, open area before riding in traffic.
- Power On: Press and hold the power button on the display until the screen illuminates.
- Select Speed Mode: Briefly press the power button to cycle through the three adjustable speed modes (ECO, D, S).
- Start Riding: Place one foot on the deck and push off with the other foot. Once you have some momentum, gently press the accelerator lever on the right handlebar.
- Braking: Use the brake lever on the left handlebar to engage the dual braking system (disc brake and EABS). Apply brakes gently to avoid sudden stops.
- Headlights & Taillights: Turn on the lights via the app or by double-pressing the power button for increased visibility.
- Cruise Control: Maintain a consistent speed for a few seconds to activate cruise control. The scooter will maintain this speed until you apply the brake or accelerator.
8. Folding and Portability
The DUODIAN F20Max is designed for easy portability with its lightweight and quick-folding mechanism.
- Folding: Locate the folding latch mechanism at the base of the handlebar stem. Release the latch and carefully fold the stem downwards until it locks into the rear fender. This process takes approximately 3 seconds.
- Carrying: Once folded, the scooter weighs only 32 pounds, making it easy to carry upstairs, onto public transport, or store in a car trunk.
9. Maintenance
Regular maintenance ensures the longevity and safe operation of your scooter.
- Tires: The 8.5-inch solid tires are maintenance-free and do not require inflation. Regularly inspect them for wear and tear.
- Brakes: Periodically check the brake levers and disc brakes for proper function and adjustment.
- Battery: Charge the battery regularly, even if the scooter is not in use, to maintain battery health. Avoid completely draining the battery.
- Cleaning: Wipe the scooter with a damp cloth. Do not use high-pressure water jets or immerse the scooter in water.
- Storage: Store the scooter in a cool, dry place away from direct sunlight and extreme temperatures.
Video 2: Official DUODIAN F20Max Electric Scooter highlighting the rear dual shock absorber for a smoother ride.
10. Troubleshooting
If you encounter issues with your scooter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Scooter does not turn on | Low battery; Loose connections | Charge the battery; Check all cable connections. |
| Motor not engaging | Scooter not pushed off; App lock engaged | Ensure you push off to gain initial momentum; Unlock via the app. |
| Reduced range/speed | Low battery; Overload; Tire wear | Fully charge battery; Ensure rider weight is within limits; Inspect tires. |
| Brakes not responsive | Brake cable loose; Worn brake pads | Adjust brake cable tension; Replace brake pads if worn. |
11. Specifications
| Feature | Specification |
|---|---|
| Brand | DUODIAN |
| Model Name | F20Max Electric Scooter for Adults |
| Motor Power | 350W (500W Peak) |
| Top Speed | 19 MPH |
| Max Distance Range | 18 Miles |
| Battery | 36V 7.8AH Lithium Battery |
| Charging Time | 5 Hours |
| Tire Type | 8.5'' Solid Tires (Maintenance-Free) |
| Braking System | Dual Braking (Disc Brakes + EABS) |
| Suspension | Dual Rear Shock Absorber |
| Weight Limit | 220 Pounds |
| Item Weight | 32 Pounds |
| Frame Material | Aluminum |
| Special Features | Cruise Control, Digital Display, Foldable, Lights, Lockable, Smart App Control |
12. Warranty and Support
Your DUODIAN Electric Scooter F20Max comes with a 1-Year Manufacturer Warranty.
For technical support, warranty claims, or any inquiries, please contact DUODIAN customer service:
- Email: 19142187744@163.com
- WhatsApp: +8619142187744