Dualtron City (EY4) Electric Scooter

The Dualtron City (EY4) is a distinctive, large-format urban electric scooter engineered to deliver unmatched road comfort, rolling stability, and power. Often recognized as the "Holland bike" equivalent within the e-scooter realm, this model pairs extra-large 15-inch tube tires with a wide 1140 mm wheelbase, delivering an upright, relaxed riding posture that effortlessly irons out cobblestones, potholes, asphalt fissures, and tram track crossings.

Propulsion is delivered by a twin-motor All-Wheel Drive system featuring two brushless DC (BLDC) hub motors producing 1200W nominal power each, resulting in a continuous system output of 2400W. The electrical system is powered by a high-grade 60V 25Ah lithium-ion battery pack built with genuine LG or Samsung cells, yielding a manufacturer-declared range of up to 90 km on a single charge. Its high torque reserves conquer severe urban slopes of up to approximately 70% (35°).

One of the most practical innovations of the Dualtron City is its fully removable, swappable battery pack. This allows owners to detach the battery module for convenient indoor charging without hauling the 41.9 kg vehicle indoors, or swap packs on long excursions. The model features standard NUTT hydraulic disc brakes with EBS electronic drag, a front rubber suspension coupled with a rear replaceable cartridge swingarm, and the EY4 digital dashboard with Bluetooth connectivity for the Dualtron mobile app on iOS and Android.

✅ Key Features

• Oversized 15-Inch Tube Tires: large-diameter pneumatic wheels delivering high approach angles over road hazards, exceptional rolling balance, and low vibration fatigue.
• Removable / Swappable Battery Pack: 60V 25Ah battery (LG or Samsung cells) easily detaches from the chassis for indoor wall charging or on-the-go pack swapping.
• Dual 2400W Nominal Powertrain: twin 1200W nominal hub motors (2400W continuous rated total) capable of scaling hill grades up to approx. 70% (35°).
• Range Up to 90 km: high-capacity power reserves protected by an intelligent Battery Management System (BMS) for long urban commutes.
• NUTT Hydraulic Braking System: front and rear hydraulic disc calipers paired with Electronic Braking Assistance (EBS) for controlled, progressive stopping.
• 190 mm Ground Clearance: elevated deck height combined with front rubber suspension and rear replaceable cartridge damping.
• EY4 Smart Display with Bluetooth: integrated dashboard connecting with the Dualtron App (iOS / Android) for telemetry analysis and illumination controls.
• 5A Fast-Charge Capability: dual charging input sockets reducing total recharge time down to approximately 5 hours using a 5A fast charger.
• Comprehensive Road Lighting: elevated front headlight, deck LEDs, brake lights, warning lights, directional turn indicators, and an electric warning horn.

Drivetrain and Performance

The Dualtron City is driven by twin brushless direct-current (BLDC) motors located in the wheel hubs. With each unit rated at 1200W continuous nominal power, the scooter generates a combined 2400W nominal output. This dual-drive architecture provides consistent traction across slippery city intersections, enabling the scooter to climb roadway inclines of up to approximately 70% (35°).

In compliance with European road mobility standards, the vehicle is software-limited to 25 km/h out of the box. When operated on private property and delimited according to manufacturer guidelines, the scooter can reach a top technical speed of up to 70 km/h.

Battery Architecture and Removable Convenience

The power platform operates on a 60V bus with a 25Ah capacity (1500 Wh) composed of premium LG or Samsung cells. The manufacturer specifies an operating distance of up to 90 km under standard testing parameters. The battery is safeguarded by an intelligent BMS circuit guarding against overheating, short-circuiting, over-current, over-discharging, and over-charging.

Unlike most large-frame electric scooters with fixed internal packs, the Dualtron City features a swappable battery enclosure. Riders living in upper-floor apartments can leave the scooter in a garage or storage unit and bring only the battery inside to charge. With dual charging ports, charging times range from approximately 14 hours with a single standard charger to around 5 hours with a 5A fast charger.

Chassis, Wheels, and Braking Dynamics

The core defining element of the Dualtron City is its 15-inch pneumatic tube wheels. Compared to conventional 10- or 11-inch e-scooter wheels, the 15-inch setup rolls over road fissures, expansion joints, and paving stones with reduced rolling resistance and minimal handlebar feedback.

The chassis features a front rubber suspension unit and a rear replaceable cartridge swingarm, providing balanced dampening over rough terrain. Combined with a generous 190 mm ground clearance and an extended 1140 mm wheelbase, the scooter maintains stability at speed. Stopping power is handled by NUTT hydraulic disc brakes on both wheels, supplemented by an adjustable electronic braking assistance system (EBS).

Ergonomics, Dimensions, and Equipment

In its riding configuration, the Dualtron City measures 1540 x 680 x 1330 mm. Despite its substantial stature, the vehicle incorporates a folding steering stem and folding handlebar grips, reducing stored dimensions to 1540 x 300 x 750 mm. The total vehicle weight is approximately 41.9 kg, rated for rider payloads of up to 120 kg.

Cockpit telemetry is driven by the EY4 digital dashboard with Bluetooth communication, compatible with the official Dualtron App on iOS and Android. Safety equipment includes a high-mounted headlight, deck markers, tail brake indicators, hazard flashers, turn signals, an electric horn, and a reinforced kickstand.

Technical Specifications

Frequently Asked Questions (FAQ)

What makes the Dualtron City unique in the e-scooter market?
The Dualtron City stands out due to its extra-large 15-inch tube tires, extended 1140 mm wheelbase, high ground clearance (approx. 190 mm), and a removable/swappable battery module, offering city bike levels of comfort and stability.

How does the removable battery benefit the rider?
The 60V 25Ah battery can be unclipped and brought indoors to charge without hauling the 41.9 kg scooter inside. It also enables swapping with a spare battery to instantly extend driving range.

What motors power the Dualtron City?
The vehicle is driven by two brushless BLDC hub motors rated at 1200W nominal power each, delivering a combined 2400W nominal continuous output.

What is the maximum operating range on a full charge?
The manufacturer specifies a range of up to 90 km per charge under standard operating conditions.

What is the maximum speed of this model?
The scooter is delivered with a factory software cap of 25 km/h for street compliance. Delimited for private track usage, it reaches a top speed of up to 70 km/h.

What braking system is installed on the Dualtron City?
The model is fitted with NUTT hydraulic disc brakes on both the front and rear wheels, paired with an electronic braking assistance system (EBS).

How long does charging take?
Charging takes approximately 14 hours with a single standard charger, or around 5 hours when using a 5A fast charger via the dual charging port system.

Does the scooter fold despite its large frame?
Yes, both the steering column and handlebars fold down, collapsing the vehicle dimensions from 1540 x 680 x 1330 mm to 1540 x 300 x 750 mm.

Can the scooter pair with a smartphone?
Yes, the installed EY4 digital dashboard integrates Bluetooth to communicate with the official Dualtron App on iOS and Android devices.