DYU D3F 14-Inch Folding Electric Bike | 250W | 36V 10Ah | 25 km/h

The DYU D3F 14-Inch Folding Electric Bike combines a compact frame with a 250W rated motor, 36V 10Ah lithium-ion battery and a manufacturer-set maximum assisted speed of 25 km/h (15.5 mph).

Designed with a compact 14-inch wheel format, the D3F weighs approximately 19 kg and incorporates a folding design to reduce the amount of space required when stored. An adjustable saddle allows the riding position to be adapted for different rider heights.

The electrical system provides pedal assistance and is paired with front and rear disc brakes for controlled stopping. High-strength tyres, an integrated headlight, rear light and LCD battery display provide additional functionality.

The manufacturer lists a pedal-assisted range of up to 50 km under suitable operating conditions. Actual range varies according to rider weight, assistance level, gradients, surface conditions, temperature, tyre pressure, battery condition and other operating factors.

Key Features

• 250W Rated Motor: Provides electrical assistance with a manufacturer-set maximum assisted speed of 25 km/h (15.5 mph).
• Up to 500W Peak Output: Manufacturer-listed peak motor output while the continuous rated power is specified as 250W.
• 36V 10Ah Lithium-Ion Battery: Integrated battery system designed to provide consistent electrical assistance.
• Up to 50 km Pedal-Assisted Range: Manufacturer-listed maximum range under suitable operating conditions.
• 14-Inch Wheel Format: Compact wheel size matched to the D3F frame design.
• Folding Design: Reduces the overall stored width for more convenient storage.
• 19 kg Approximate Weight: Compact construction helps make handling and storage easier.
• Front and Rear Disc Brakes: Provides controlled braking performance at both wheels.
• High-Strength Tyres: Designed to provide durability and resistance to normal surface wear.
• Adjustable Saddle: Allows the seat height to be adjusted for different riders.
• LCD Display: Provides visible battery-level information.
• Integrated Lighting: Includes a front headlight and rear light for improved visibility.
• IP54 Protection Rating: Manufacturer-listed protection against limited dust ingress and splashing water.
• 120 kg Maximum Load: Manufacturer-specified maximum bicycle load capacity.

Technical Specifications

*Maximum range is based on manufacturer information and is not guaranteed. Actual range varies according to rider weight, assistance level, gradients, riding surface, temperature, tyre pressure, battery condition and other operating factors.

What's Included

• 1 × DYU D3F Electric Bicycle
• 1 × Battery
• 1 × Charger
• 2 × Pedals
• 1 × Owner's Manual
• 1 × Warranty Card
• 1 × Inner Hexagon Spanner
• 1 × 15 mm Single Open Wrench
• 1 × Fender

A child seat is listed by the manufacturer as an optional item and should not be represented as standard equipment unless included with the specific product supplied.

Why Choose the DYU D3F?

The DYU D3F combines a compact 14-inch design with a 250W rated motor and 36V 10Ah lithium-ion battery. Its approximately 19 kg weight and folding structure reduce the space required for storage while maintaining a manufacturer-listed maximum load capacity of 120 kg.

The electrical system is limited to a manufacturer-stated maximum assisted speed of 25 km/h (15.5 mph). The manufacturer also lists up to 50 km of pedal-assisted range under suitable operating conditions.

Front and rear disc brakes provide controlled stopping performance, while the adjustable saddle allows the riding position to be adapted to different rider heights. Integrated lighting, an LCD battery display and durable tyres add further functionality.

Frequently Asked Questions

What motor does the DYU D3F use?

The DYU D3F is equipped with a 250W continuous rated motor. The manufacturer also lists peak motor output of up to 500W.

What is the maximum assisted speed?

The manufacturer specifies a maximum assisted speed of 25 km/h (15.5 mph).

What battery does the DYU D3F use?

The D3F uses a 36V 10Ah lithium-ion battery with a battery management system.

What is the maximum pedal-assisted range?

DYU lists a maximum pedal-assisted range of up to 50 km. Actual range varies according to rider weight, assistance level, gradients, riding surface, temperature, tyre pressure and battery condition.

How long does the battery take to charge?

The manufacturer specifies an approximate charging time of 5 to 6 hours.

How much does the DYU D3F weigh?

The manufacturer lists an approximate bicycle weight of 19 kg.

What is the maximum load capacity?

The manufacturer specifies a maximum load capacity of 120 kg.

Does the DYU D3F fold?

Yes. The D3F incorporates a folding design. The manufacturer lists folded dimensions of approximately 1170 × 200 × 720 mm.

What braking system does it use?

The DYU D3F is equipped with front and rear disc brakes.

Does the DYU D3F have lights?

Yes. The manufacturer lists a front headlight and rear light as standard features.

Does the DYU D3F have a display?

Yes. The bicycle includes an LCD display that shows battery-level information.

Is the 500W peak output the same as a 500W continuous rated motor?

No. The manufacturer specifies the D3F motor as 250W rated power while separately listing peak output of up to 500W. UK EAPC rules use the motor's continuous rated power when applying the 250W limit.

Is the DYU D3F EAPC compliant in Great Britain?

The standard manufacturer specification lists a 250W continuous rated motor, functional pedals and a maximum assisted speed of 25 km/h (15.5 mph), which correspond with the principal motor-power and speed requirements for an EAPC in Great Britain.

However, DYU also lists throttle and cruise functionality. Where the bicycle can provide powered propulsion without normal pedalling, applicable vehicle approval requirements must also be satisfied. The manufacturer or supplier should confirm the approval marking and exact configuration before the product is represented as fully EAPC compliant.

Can modifications affect its legal classification?

Yes. Changes to the motor, controller, speed restriction, powered controls or other electrical components can affect safety, warranty coverage and legal classification.

Off-Road & Regulatory Compliance Notice

Standard DYU D3F specification: The model described on this page is manufacturer-listed with a 250W continuous rated motor and maximum assisted speed of 25 km/h (15.5 mph).

The manufacturer separately lists peak output of up to 500W. Peak output should not be confused with the continuous rated motor power used when assessing the 250W EAPC power limit.

In Great Britain, an electrically assisted pedal cycle must have pedals capable of propelling the bicycle, continuous rated motor power not exceeding 250W and electrical assistance that does not propel the bicycle above 15.5 mph.

The manufacturer lists throttle and cruise functionality for the D3F. Where powered propulsion is available without normal pedalling, the applicable vehicle approval requirements must be satisfied. Buyers should verify the approval number or marking and exact configuration supplied before relying on an EAPC classification.

Modified or higher-power configurations: Any configuration modified so that continuous rated motor output exceeds 250W, electrical assistance operates above 15.5 mph, or other applicable EAPC requirements are no longer satisfied can change the bicycle's legal classification.

A configuration that does not meet EAPC requirements may be classified as a motorcycle or moped and may require vehicle approval, registration, insurance, licensing and other applicable requirements before use on public roads.

A modified configuration intended only for use away from public roads should only be operated on suitable private land with the landowner's permission and where such use is lawful. Buyers and riders are responsible for ensuring that the exact bicycle configuration and intended use comply with applicable laws and regulations.