Dualtron Storm Limited (EY4) Electric Scooter

The Dualtron Storm Limited (EY4) represents the peak of Minimotors' high-performance hyper-scooter engineering, widely recognized across the electric mobility community as "The Beast." Developed as a comprehensive re-master of the iconic Storm LTD platform, it combines massive 84V powertrain dynamics with an extraordinary battery reserve, creating an electric machine capable of long-distance touring and climbing inclines of up to approximately 76%.

Propulsion is delivered by twin brushless direct-current (BLDC) hub motors producing an astonishing peak output of 11,500W (Max Output). The powertrain is energized by an enormous 84V 45Ah battery pack built with authentic LG 21700 cells, storing 3780 Wh of energy and achieving a manufacturer-declared operating range of up to 200 km on a single charge.

Directional stability at elevated speeds is anchored by a factory-installed directional steering damper, 4-piston NUTT hydraulic disc calipers clamping 160 mm rotors, and ultra-wide 11-inch puncture-resistant tubeless tires. The chassis features certified IPX5 water resistance, an updated square steering column, handlebars widened by 100 mm, a dedicated controller cooling system, twin 30W headlights, and the widescreen EY4 central digital cockpit with Bluetooth connectivity for the Dualtron mobile app (iOS / Android).

✅ Key Features

• 11,500W Max Peak Dual Motor: twin high-torque hub motors delivering up to 11,500W maximum output, scaling extreme gradients of up to approx. 76%.
• High-Voltage 84V 45Ah Battery (LG 21700): massive 3780 Wh capacity reserve providing a manufacturer-declared range of up to 200 km.
• Certified IPX5 Water Resistance: engineered protection against low-pressure water jets, enabling dependable all-weather riding.
• Directional Steering Damper Pre-Installed: stabilizes the front steering geometry against high-speed wobbles for controlled straight-line tracking.
• 4-Piston NUTT Hydraulic Brakes: quad-piston hydraulic calipers clamping 160 mm discs paired with an adjustable Electronic Braking Assistance system (EBS).
• 11-Inch Puncture-Resistant Tubeless Tires: ultra-wide tubeless tires built with reinforced casings to prevent road punctures.
• EY4 Smart Color Display with Bluetooth: central widescreen dashboard syncing with the official Dualtron companion app (iOS / Android).
• 100 mm Wider Handlebar & Square Stem: expanded bar width minimizes arm fatigue, while the square-profile steering tube enhances rigidity.
• Dual 30W High-Output Headlights: twin 30W front projection lights, brake lights, directional turn signals, hazard flashers, and an electric horn.
• Dedicated Controller Heat Dissipation: passive cooling architecture dissipating internal thermal buildup during high-speed runs.

Drivetrain and Performance

The propulsion system features dual brushless DC hub motors integrated into both wheel assemblies, generating a combined maximum peak output of 11,500W. Operating on an 84V electrical bus, the system delivers immediate throttle response and high torque across both wheels, allowing riders to scale slopes of up to approximately 76%.

In compliance with European road mobility standards, the vehicle is software-limited to 25 km/h out of the box. When operated on private tracks and delimited according to manufacturer instructions, the scooter achieves an unrestricted top technical speed of up to 100 km/h. To preserve electronic endurance during extended high-speed riding, the motor controllers utilize a specialized passive cooling system that vents heat away from internal components.

Battery Architecture and Fast Charging

Energy is stored in an 84V 45Ah lithium-ion battery pack (3780 Wh) composed of authentic LG 21700 cylindrical cells. The manufacturer specifies an operating range of up to 200 km on a single charge under standard testing conditions. The pack is governed by an intelligent Smart BMS circuit protecting against overheating, short-circuiting, over-current, over-discharging, and over-charging.

The scooter incorporates a dual charging port architecture, allowing riders to adapt charging speeds according to charger configurations:

• Charging with a single 1.5A standard charger: approximately 56 hours,
• Charging with two 1.5A standard chargers in parallel: approximately 28 hours,
• Charging with a single fast charger: approximately 9 hours,
• Fast charging with two fast chargers simultaneously: approximately 4.5 hours.

Braking, Chassis, and Steering Stability

Stopping control for the 50.5 kg vehicle is managed by NUTT 4-piston hydraulic disc brakes clamping 160 mm steel rotors. The quad-piston design distributes clamping force evenly across the pads, reinforced by an Electronic Braking Assistance system (EBS) that applies motor drag to assist mechanical braking.

The chassis rides on front and rear swingarm suspension units utilizing replaceable elastomeric rubber cartridges (offering 5 interchangeable hardness compounds). To ensure steering stability at speed, a directional hydraulic steering damper is installed as standard equipment. Road contact is maintained by 11-inch ultra-wide tubeless pneumatic tires engineered with puncture-resistant casings.

Ergonomics, Dimensions, and Equipment

The chassis provides a ground clearance of approximately 190 mm and a wheelbase of 940 mm. Unfolded, the vehicle measures 1270 x 690 x 1350 mm. The handlebar is widened by 100 mm to optimize steering leverage, while the steering column is shaped with a square profile for structural stiffness.

The folding mechanism collapses the scooter down to 1270 x 320 x 600 mm for vehicle transport. Curb weight is approximately 50.5 kg, supporting a maximum rider payload of up to 150 kg. Standard equipment includes the EY4 display with Bluetooth, twin 30W front headlights, brake lights, turn signals, warning flashers, a loud horn, and a reinforced kickstand.

Technical Specifications

Frequently Asked Questions (FAQ)

What updates are featured on the new Dualtron Storm Limited (EY4)?
The Storm Limited features the EY4 color display with Bluetooth app connectivity, handlebars widened by 100 mm, a square-profile steering tube, two 30W headlights, an improved folding system, a dedicated controller cooling system, and IPX5 water resistance.

What is the maximum power output of the Dualtron Storm Limited?
The scooter is powered by twin BLDC hub motors delivering up to 11,500W maximum peak power output.

What battery is fitted and what is the operating range?
The scooter is fitted with an 84V 45Ah battery pack (3780 Wh) composed of LG 21700 cells, delivering a manufacturer-declared range of up to 200 km.

What is the top speed of the scooter?
The scooter is capped at 25 km/h out of the box to comply with traffic regulations. When unlocked for private land usage, it can achieve a maximum technical speed of up to 100 km/h.

What braking system is installed on this model?
The vehicle is equipped with NUTT 4-piston hydraulic disc brakes with 160 mm rotors, supported by Electronic Braking Assistance (EBS).

What is the purpose of the directional steering damper?
The factory directional steering damper suppresses harmonic steering vibrations (speed wobbles) at elevated speeds, ensuring directional stability and tracking precision.

How long does it take to charge the battery?
Charging takes approximately 56 hours with one 1.5A charger (28 hours with two). Using one fast charger reduces time to about 9 hours, and two fast chargers in parallel achieve full recharge in approximately 4.5 hours.

What is the maximum payload capacity?
The reinforced frame supports rider payloads of up to 150 kg.

Can the scooter be ridden in wet conditions?
Yes, the Dualtron Storm Limited is certified with an IPX5 water-resistance rating, providing protection against water projected from nozzles.