Power Assist / Empulse / Add-On Power-Assist Devices / Empulse M90

M90 Wheel Assist

The Empulse M90 adds sleek, stylish power to your manual wheelchair without weighing you down.

Seamless power integration for your manual wheelchair and your life. The Empulse M90 provides power assist for your manual wheelchair with no bulk, wires, or extra components. Keep your preferred tires and handrims and drive your wheelchair with or without power through a simple, removable all-way toggle. By far the lightest wheel-drive power assist device in its class, the M90 adds sleek, stylish power to your lifestyle without weighing you down.

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Options and Prices

Mounting

Sleek, integrated design

Turn heads with the M90's sleek lines. The M90 has no extra components or wires hanging off your wheelchair. So mounting or dismounting the M90 is as easy as using a quick-release rear wheel. All of its components and its removable batteries are fully integrated into the hub without changing the width of your wheelchair.

More features

The lightest in its class... by far!

The M90 is the lightest wheel drive on the market, up to 40% lighter than similar products. The complete package (including wheels, batteries, and controller) weighs only 26 lbs! Each wheel weighs just 13 lbs., including batteries. And with its minimal weight centered on your wheels, it gives you better maneuverability and a better ride.

Dual Controller

Instantly switch drive modes

With the smart Dual Controller, you can switch effortlessly between all-way toggle and speed controller with handrim steering drive modes using the Mode/Profile button to match your energy, environment, and preferences - no change of hardware needed.

Controller features

Dual Controller

Instantly switch drive modes

With the smart Dual Controller, switch effortlessly between All-Way Toggle and Speed Controller with Handrims Steering drive modes using the Mode/Profile button to match your energy, environment, and preferences – no change of hardware needed.

	All-Way Toggle	Speed Controller with Handrim Steering
Start / Stop	Push all-way toggle forward to start. Let go of the all-way toggle to stop. Handrims don't affect speed.	Tap speed controller to start. Push speed controller down or use handrims to stop gradually.
Speed Control	Push all-way toggle forward/back to proportionally accelerate or slow down.	Tap speed controller to increase or decrease speed step by step, up to level 5 in both profiles.
Steering	Move all-way toggle in any direction to steer.	Steer manually using the handrims.
Cruise Control	Press down on all-way toggle at desired speed to activate. Steer with all-way toggle. Stop by moving all-way toggle or pressing down.	Tap speed controller to increase or decrease speed level. Steer manually with handrims. Stop by pressing speed controller down, tapping backwards until speed is level zero, or by grabbing and holding handrims.
Manual Assist	N/A	A gentle boost that engages after a stop, via handrims allowing repositioning.
Drive Profile	Select via App or Dual Controller (Indoor/Outdoor)	Select via App or Dual Controller (Indoor/Outdoor)
Drive Setting	Choose speed range (Base / Standard / Max) via App	Choose speed range (Base / Standard / Max) via App

Some features may work differently depending on whether All-Way Toggle or Speed Controller with Handrims Steering is selected. We recommend that riders take a moment to get familiar with how functions operate in their chosen drive mode for a smooth and confident ride.

M90 App

Drive anywhere, effortlessly. Quickly switch between drive modes and drive profiles for smooth handling in any environment, with the right balance of power and efficiency.

Fine-tune the ride. Choose Base, Standard, or Max drive settings to match your needs and surroundings.

Get the most from your M90 from day one. Use the M90 app during setup to optimize performance for you and your wheelchair. Select drive modes and drive profiles for indoor or outdoor use, with presets for speed, torque, and slope. Save your preferred settings so they're ready every time you power on.

Stay in control with real-time battery status for both the controller and wheels. Enhance your driving experience with firmware updates that optimize drive parameters and performance. M90 models receive over-the-air (OTA) updates through the M90 app, giving you access to the latest improvements from home.

Compatible with Android^™ and Apple^® iOS*.

* To allow OTA updates, an iOS device or Android 14 or later is required.

No compromises on your ride.

With the M90, you can use your preferred handrims and tires. They can be switched out, just like any other 24" wheel, keeping your traction, feel, and function the way you like it.

Safe, easy, and intelligent drive

The M90 is both safe and intelligent – expect nothing less of modern mobility tools. Because the weight and power of the M90 is centered on your wheels, driving is natural and intuitive. The M90 has built-in cruise control, automatic terrain adjustment, and intelligent hill control – all to keep you safe and on track.

Transport

Effortless travel anytime, anywhere

Designed to be easily transported. The M90 wheels offer a standard quick-release axle, weigh a mere 13 lbs. each, and fit nicely into the trunk of even small cars. Thanks to the flight-friendly battery*, the M90 is ideal for riders seeking a convenient solution for long- and short-distance travel.

* Individual airlines have differing requirements relative to transport of products with Li-Ion batteries. Prior to arranging any air travel with the M90, please confirm with your airline or carrier that they accept battery-powered vehicles. Please refer to the owner's manual for further details.

More features

Interested in talking with us directly about the M90?

Whether you'd like to arrange a demo and assessment or you just have some general questions about the M90, complete this form and we'll get in touch to help you. We can talk you through the process of getting a new power assist device and help you to decide which of our power assist devices is most suitable for your needs.

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Specifications

Dimensions

Product Information

HCPCS Code:E0986

Performance/Weights

Max. Range:9.3 miles
Range is dependent on the ground surface, the weight of the rider, driving behavior, temperature, and terrain.

Max. Speed:3.7 MPH

Battery Size:4.0Ah Lithium-Ion

Wheel Options:24"

User Weight Capacity:265 lbs.

Product Weight:

Total device weight: 26 lbs.
Each wheel, with battery: 13 lbs.
Each wheel, without battery: 12 lbs.
Battery weight: 1.3 lbs. (4.0Ah, each)

As a part of our ongoing product improvement initiative, Sunrise Medical reserves the right to change specifications and design without notice. Further, not all features and options offered are compatible with all configurations of the wheelchair. Please consult the user instruction manual for more information.

Support

Documentation

Brochures

Empulse M90 Brochure

Order Forms

Empulse M90 Order Form (Feb 2026)

Owners Manuals

Parts Manuals

Sunrise Medical Spare Parts Catalog

Other

Frequently Asked Questions

How to transport the Empulse M90 wheel add-on in a car?

Transporting the Empulse M90 wheel add-on for manual wheelchairs in a car is straightforward due to its compact and lightweight design. Follow these steps for hassle-free transportation:

Detach the wheels: Remove the wheels for easier handling and to save space in your car.
Remove the lithium-ion battery: This reduces the overall weight and ensures safe transport. Recommended but not required for motor vehicle transport.
Take off the controller: Detach the controller from its frame mount to achieve a more compact fit.
Fold or disassemble the wheelchair: If your wheelchair is foldable, collapse it or remove parts like footrests to save additional space.
Securely position the devices: Place the wheelchair and the Empulse M90 power assist unit securely in your car to prevent shifting during transit.

Which wheelchairs are compatible with the Empulse M90?

The Empulse M90 power assist device from Sunrise Medical is designed to fit most Sunrise Medical folding and rigid wheelchairs with ease. To ensure compatibility with your wheelchair:

Check the Compatibility Guide: Visit the Sunrise Medical website to access the comprehensive Compatibility Guide. This guide lists all wheelchair models for which a combination agreement exists.
Non-Sunrise Medical chair compatibility will be coming soon.

Where can I drive the Empulse M90 wheel add-on?

The Empulse M90 wheel add-on is a lightweight, versatile, and maneuverable wheel add-on designed for a wide range of environments:

Indoor Use: Effortlessly navigate tight spaces such as homes, offices, and shopping centers thanks to its compact design and small turning radius.
Urban Use: Ideal for busy streets, public transportation, and navigating crowded areas in cities. Its agility makes it perfect for handling urban obstacles with ease.
Outdoor Use: The Empulse M90 is capable of handling outdoor terrains, making it suitable for parks, sidewalks, and similar spaces.

This combination of flexibility and portability ensures the Empulse M90 enhances mobility in both urban and outdoor environments.

How fast can I go with the Empulse M90?

The Empulse M90 wheel add-on offers a maximum forward speed of 3.7 MPH.

How do you store the Empulse M90 battery correctly (e.g., over winter)?

To maximize the lifespan of your Empulse M90 battery, follow these storage guidelines:

Ideal Temperature and Humidity: Store the battery at a temperature between 50°F to 77°F (10°C and 25°C). Maintain a relative humidity level of 20% to 75%.
Charge Level: Keep the battery at approximately 75% charge during storage.
Avoid Deep Discharge: Do not store the battery with a low charge for extended periods. A low charge can lead to a deep discharge, causing permanent damage to the battery.

By following these steps, you can ensure your Empulse M90 battery remains in optimal condition even during prolonged periods of non-use, such as over the winter.

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