The Momentum U2 is a compact, lightweight electric outboard motor built to replace small gas engines with clean, quiet, and efficient electric power. With 2.5 kW of output (up to 5 HP equivalent), it delivers smooth, reliable propulsion for small boats without the noise, fumes, or maintenance of gasoline.

Key Features

• 2.5 kW Electric Power: Comparable to a 5 HP gas outboard
• Ultra-Portable Design: Lightweight and easy to transport
• Integrated Lithium Battery: 1440 Wh removable battery
• Built-In Display: Real-time speed, range, and runtime are shown in the color display, which is built into the battery. This alleviates the need to plug the battery into the motor to check your state of charge!
• Quick-Swap Battery: Cable-free, slide-in design

Ideal Applications

• Dinghies and tenders
• Sailboat auxiliary propulsion
• Small skiffs and workboats
• Boaters switching from gas to electric

Technical Specifications

• Max Input Power: 2.5 kW
• Battery Capacity: 1.4 kWh (removable)
• Shaft Length Options: 39 cm (Short) / 52 cm (Long). The shaft length of the U2 is measured from where the motor sits on the transom down to the tip of the propeller when it is in a vertical position. 
• Total Weight: 40.5 pounds combined: The motor weighs 20.5 pounds (short shaft), the battery weighs 17.5 pounds, and the transom bracket weighs 4.5 pounds.
• Cooling System: Passive seawater cooling

The Momentum U2 offers emission-free boating with minimal maintenance — no fuel, no winterization, and no hassle. Charge the battery, mount the motor, and enjoy quiet electric performance on the water.

Momentum U2 Electric Outboard FAQ

When will the Momentum U2 be available?

We are expecting the first batch of Momentum U2 electric outboards to be delivered to customers in May of 2026. We highly recommend pre-ordering a U2, as initial US stock will be very limited. 

What is the Momentum U2 price?

The tiller version of the Momentum U2 is set to retail for $3999 before shipping or tax. This includes the motor, battery, charger, transom bracket, propeller and one kill switch.

Can the Momentum U2 be used with external or third party batteries?

Momentum Electric Marine has plans to make an external / third party battery adapter cable, but it is unclear when this will be released. We do not expect this cable to be available until Q4 of 2026 at the earliest.

Is the Momentum U2 available in a remote version?

The U2 will be available in a remote version, although it is unclear when this version will be available in the US. We do not anticipate receiving any U2 remote versions until after the summer of 2026. 

How much does the Momentum U2 weigh?

The Momentum U2 is one of the lightest electric outboards on the market! The short shaft version of the motor weighs 20.5 pounds, the battery weighs 17.5 pounds, and the transom bracket weighs 4.5 pounds. The combined weight of a short shaft tiller U2 is 40.5 pounds. 

Can the Momentum U2 get my boat up on the plane?

While we have yet to do our own testing, Momentum's testing data implies that the U2 can get a small dinghy up on the plane, at least with one person on board. Please note that the ability to plane depends on numerous factors and we cannot guarantee that the U2 can get your boat on the plane.