There is a small slot built into the back of the motor, the slot acting as the carry handle on the battery and the spreader bar on the back of the transom mount. You can take a locking wire – so similar to a bike lock – and thread it through all those parts and secure with a padlock.

&list=PLpdhKTyL-WcLAw4eFfWYOToYcPP1Q5O6O&index=2″ target=”_blank” rel=”noopener”>This short video from the Momentum team takes you through this in a little more detail.

There is a two year warranty on the U2 package.

All warranty claims are managed by the UK distributor – Adventure Marine Ltd, trading as Electric Outboard.

Your first port of call should be the dealer who you bought your U2 from.

If they can’t help then they’ll refer you to Adventure Marine Ltd (trading as Electric Outboard) who are the sole UK distributors of the Momentum range of electric outboard motors

A full range of spares is held in their UK warehouse and they manage all warranty claims.

The battery capacity is 1.4kWh and at the time of writing (May 2026), a kWh costs around 25p so to charge it fully from dead flat will only cost around 35p at current rates – although this of course will vary over time depending on where Ofgem sets the price cap and the tariff charged by your energy provider.

If you have a cheap overnight rate, then the cost to charge the battery can reduce further and if you have solar power, then charging can be potentially completely free!

As the motor has few moving parts than a traditional combustion engine, and no fuel systems to worry about, there are no real maintenance or servicing costs.

The U2 has an anti-grounding feature built into it.

This essentially allows you to run into an obstruction in the water – say a log – or run up on to a beach without damaging your propeller or scratching the motor.

The way to engage the anti-ground feature is to go to the back of the transom mount and locate the blue tab that allows you to raise and lower the motor. Depress that and on the side, you’ll see a little wing. If you turn that 90^o into place, that will allow the motor to tip up on its own if you do run aground.

If you want to return the motor to a more rigid tilt position, simply repeat the process – so turn the wing back 90^o and press the blue tab forward and the motor is locked back in position.

&list=PLpdhKTyL-WcLAw4eFfWYOToYcPP1Q5O6O&index=3″ target=”_blank” rel=”noopener”>This short video from Momentum explains what it does and how to use it.

With fewer moving parts than a traditional combustion engine and no fuel systems, there is no real ongoing maintenance required and servicing is a thing of the past.

The simple answer is no! But we’ll go into more detail about why not shortly.

With no internal impellers, oil changes or pull cords to worry about, there is no real ongoing maintenance required!

We do recommend rinsing your U2 off with fresh water after every use in salt water and it’s always a good idea to check the propeller for any damage or debris – but that’s about it!