DYU D3FMINI 14"Compact Folding EBike 350W 36V7.8Ah

DYU D3FMINI 14"Compact Folding EBike 350W 36V7.8Ah Description

DYU D3FMINI Compact Folding Electric Bike — 14-Inch Mini Urban E-Bike

The DYU D3FMINI is a compact folding electric bike built for short urban trips, campus travel and everyday last-mile mobility. Its distinctive D-type curved frame houses a built-in battery, while 14-inch wheels and a portable folding stem make it easy to store at home, in the office or in a car boot.

With a 350W rear hub motor, integrated 36V 7.8Ah battery and four riding modes including walk assist, pure electric, pedal assist and normal cycling, the D3FMINI offers flexible riding for city streets and park paths. Front and rear mechanical disc brakes, integrated lighting and IP54-rated weather protection support confident daily use.

Why Choose the DYU D3FMINI

• Compact mini format — 14-inch wheels and a short wheelbase for nimble urban riding and easier handling in busy areas.
• 350W rear hub motor — Brushless rear motor with selectable speed levels and up to 15° climbing ability on moderate inclines.
• Built-in 36V 7.8Ah battery — Integrated non-removable battery pack (approx. 1.5 kg) housed within the frame for a clean, streamlined look.
• Four riding modes — Walk assist, pure electric, pedal assist and normal bicycle mode for different journeys and energy use.
• Dual disc brakes — Front and rear mechanical disc brakes with power-cut brake levers for responsive stopping.
• Foldable stem design — Handlebar stem folds down to reduce storage height; height-adjustable saddle for personalised fit.

Performance & Power

The D3FMINI pairs a 350W rated rear hub motor with a 36V 7.8Ah built-in battery for efficient short-to-medium urban range.

• Motor: 350W rear hub motor (14-inch integrated rear motor wheel)
• Sensor: 6-pole single Hall speed sensor for efficient pedal-assist response
• Battery: Built-in non-removable 36V 7.8Ah lithium battery (42V nominal)
• Battery weight: Approximately 1.5 kg
• Speed levels: 0 / 15 / 25 / 32 km/h selectable settings
• Speed: Pedal assist is typically limited to 25 km/h on UK public roads; higher settings apply only where legally permitted
• Range: Approximately 23 km (manufacturer test at 25 km/h)
• Climbing ability: Up to 15° gradient
• Throttle: Twist-grip throttle for electric riding modes

Estimated range and speed may vary depending on rider weight, terrain, riding mode, tyre pressure, weather and riding style.

Electronics & Controls

• Central LCD display: Mid-mounted digital speed display showing speed, battery level and riding status
• Riding modes: Walk assist, pure electric, pedal assist and normal bike mode
• Twist throttle: Twist-grip acceleration control for electric modes
• Brake levers: Power-cut brake levers that cut motor output when braking
• Front headlight: Head-tube mounted front light for forward visibility
• Rear light: Mudguard-mounted rear tail light
• Waterproof rating: IP54 for the complete bike

Frame, Components & Braking

• Frame: 14-inch D-type steel frame with curved mini-bike profile
• Front fork: 14-inch steel front fork
• Wheels: 14-inch integrated steel front wheel; 14-inch integrated rear motor wheel
• Tyres: 14 × 2.125 pneumatic tyres
• Drivetrain: Single-speed chain drive with 42T chainring
• Brakes: Front and rear mechanical disc brakes
• Handlebars: Straight steel handlebars with sandblasted black finish
• Seat post & saddle: Steel seat post with black padded saddle
• Pedals: Black plastic pedals
• Mudguards: Plastic front and rear fenders
• Headset angle: 130°
• Net weight: 20.2 ± 0.3 kg
• Pedal ground clearance: 110 mm
• Handlebar width: 530 mm

Comfort & Convenience Features

• Compact curved frame with integrated battery keeps the profile neat for city riding and storage.
• Folding handlebar stem helps reduce storage footprint when parked indoors or transported.
• Height-adjustable seat post allows basic fit tuning for different rider heights.
• Four riding modes let you choose between exercise, assisted commuting or full electric travel.
• Efficient speed sensor improves pedal-assist smoothness and reduces unnecessary effort.
• Dual disc brakes and integrated front/rear lighting support safer urban riding day and night.
• IP54 rating helps protect electrical components in typical outdoor and light-wet conditions.
• Single-speed drivetrain keeps operation simple with minimal maintenance.

Dimensions & Rider Fit Unfolded Dimensions

• Overall size: 1220 × 530 × 995 mm (L × W × H)
• Handlebar width: 530 mm
• Package size: 1065 × 225 × 505 mm

Folding Dimensions

• Folded size: 1220 × 403 × 650 mm

Adjustable Fit Range

• Seat height: Adjustable seat post
• Pedal ground clearance: 110 mm

Ideal For

• Urban commuters and students needing a compact e-bike for short daily trips
• Riders with limited storage who benefit from a folding stem and mini wheel format
• City leisure rides, park paths and last-mile connections to public transport
• Adults who want simple single-speed operation with electric assist and throttle options
• Everyday riders looking for disc brakes, built-in lighting and IP54 weather protection