Introduction
Welcome to the user manual for your new ADO Air 20S Foldable Electric Bicycle. This manual provides essential information for the safe operation, maintenance, and optimal performance of your e-bike. Please read it thoroughly before your first ride.
The ADO Air 20S is designed for urban commuting, featuring an ultra-light foldable aluminum body, a quiet and maintenance-free carbon belt drive, and a responsive torque sensor for a smooth riding experience. It also includes hydraulic disc brakes and adjustable front fork shock absorption for enhanced comfort and safety.

Image: The ADO Air 20S electric bicycle in blue, shown with a helmet, lock, and a smartphone displaying the ADO Smart App interface.
Safety Information
Your safety is paramount. Always wear a helmet when riding. Ensure all components are properly assembled and secured before each ride. Adhere to local traffic laws and regulations.
- Helmet Use: Always wear a certified bicycle helmet.
- Pre-Ride Check: Inspect brakes, tires, and battery level before each use.
- Weather Conditions: Exercise caution when riding in wet or slippery conditions.
- Weight Limit: Do not exceed the maximum recommended load capacity.
- Children: This e-bike is intended for adult use.
Components Overview
Familiarize yourself with the main components of your ADO Air 20S e-bike:
- Frame: Ultra-light aluminum alloy, foldable design.
- Motor: 37Nm 250W Brushless E-Motor.
- Battery: 36V 9.6Ah Removable battery, providing up to 100 km range.
- Drive System: Carbon Belt Drive for quiet, rust-free, and maintenance-free operation.
- Sensor: Torque Sensor for precise pedal assistance.
- Brakes: Front & Rear Hydraulic Disc Brakes.
- Display: 180° Full Viewing IPS Colorful Display.
- Suspension: Adjustable Front Fork Shock Absorption.

Image: An infographic highlighting key features: 37Nm 250W Brushless E-Motor, Torque Sensor, 36V 9.6Ah Removable Battery, 180° Full Viewing IPS Colorful Display, ADO Smart APP, Front & Rear Hydraulic Disc Brakes, Belt Drive, and Adjustable Frontfork Shock Absorption.
Setup
Unfolding the Bicycle
The ADO Air 20S features a three-step folding design for easy transport and storage. To unfold:
- Place the folded bike on a flat surface.
- Release the frame latch and extend the main frame until it locks into place.
- Unfold the handlebars and secure the stem latch.
- Adjust the seat post to your desired height and secure the quick-release clamp.
- Ensure all latches and clamps are securely fastened before riding.
Battery Installation and Charging
The battery is removable for convenient charging. Insert the battery into its compartment until it clicks securely. To charge, connect the charger to the battery port and a power outlet. The indicator light on the charger will show charging status.
Operating Instructions
Powering On/Off
Press and hold the power button on the display to turn the e-bike on or off.
Pedal Assist Modes
The ADO Air 20S offers multiple pedal assist modes, controlled via the IPS colorful display. The torque sensor precisely detects your pedaling force to provide real-time power assistance.

Image: An illustration demonstrating the three pedal assist modes: Eco (lowest support, 15km/h), Tour (middle support, 20km/h), and Sport (highest support, 25km/h).
Using the ADO Smart APP
Connect your ADO Air 20S to the ADO Smart APP via Bluetooth. The app allows you to:
- Monitor riding status (speed, mileage, battery).
- View fault maintenance records.
- Access multi-channel customer service.
- Explore an interactive 360° panoramic platform.

Image: A close-up view of the e-bike's IPS colorful display, showing navigation sync, power status, speed, and mileage information.
Maintenance
Battery Care
To maximize battery life:
- Charge the battery regularly, even if not in use.
- Avoid fully discharging the battery.
- Store the battery in a cool, dry place.
Carbon Belt Drive
The carbon belt drive is designed to be maintenance-free, quiet, and rust-proof. No lubrication is required. Periodically inspect the belt for any signs of wear or damage.

Image: A detailed view of the e-bike's carbon belt drive system, highlighting its clean and robust design.
Brakes
Regularly check the hydraulic disc brakes for proper function. If you notice reduced braking performance or unusual noises, have them inspected by a qualified technician.
Tires and Suspension
Maintain proper tire pressure as indicated on the tire sidewall. The adjustable front fork suspension can be tuned for different terrains. Ensure the suspension is clean and free of debris.

Image: A close-up of the front wheel, showcasing the front fork suspension and hydraulic disc brake. Insets show the suspension mechanism and various terrains (gravel, streets, meadow, mountain) the bike can handle.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on | Low battery; Battery not properly seated; Loose connections. | Charge battery; Ensure battery is securely installed; Check all cable connections. |
| No pedal assist | Pedal assist mode off; Torque sensor issue; Motor connection. | Select a pedal assist mode on the display; Contact support if sensor or motor issues persist. |
| Brakes feel weak | Worn brake pads; Air in hydraulic system. | Inspect and replace brake pads; Have hydraulic system bled by a professional. |
Specifications
| Feature | Detail |
|---|---|
| Model | Air 20S |
| Brand | A Dece Oasis |
| Bike Type | Electric Bicycle |
| Age Range | Adult |
| Color | Blue |
| Frame Material | Aluminum Alloy |
| Wheel Size | 20 Inches |
| Motor Power | 250 Watts |
| Battery Capacity | 36V 9.6Ah (21700 high-quality cells) |
| Max Range | Up to 100 km |
| Brake Type | Hydraulic Disc Brakes (Front & Rear) |
| Suspension Type | Front Fork Suspension (Adjustable) |
| Drive System | Carbon Belt Drive |
| Special Features | Digital Display, Adjustable Handlebar, Adjustable Saddle, Odometer, Torque Sensor, ADO Smart APP |
| Item Weight | 18.5 kilograms |
| Dimensions (Unfolded) | 156 cm (Length) x 59 cm (Width) x 115 cm (Height) |
| Dimensions (Folded) | 850mm x 700mm x 430mm |

Image: A diagram illustrating the dimensions of the ADO Air 20S electric bicycle in both its unfolded and folded states, including rider height references.
Warranty and Support
Warranty: The motor and battery of the ADO Air 20S are covered by a one-year warranty. Other parts are eligible for free replacement if damaged within one year.
After-Sales Service: The after-sales service center is located in Bruchsal. For any questions or support, please contact customer service. Emails will be responded to within 12 hours.
You can also use the ADO Smart APP for customer service inquiries.







