FAQ

The most common questions we receive:
What is the range of an M10?
The range varies depending on the type of boat, weight, and speed. For example, a 3.4 m tender with up to 80 kg and one person on board can travel up to 10 nautical miles at full throttle. At lower speeds, the range increases significantly and can potentially reach up to 100 nautical miles per charge.
How fast can the M10 go?
In standard configuration, the M10 reaches speeds of up to approximately 16.5 knots. In real conditions, light tenders typically reach 16–17 knots, while a heavily loaded tender often reaches around 12 knots.
How do I manage "range anxiety" with Momentum's engines?

Our engines have built-in GPS that calculates and displays your remaining range in real-time based on speed and load. This helps you plan trips safely. Slowing down significantly extends the range, and after a few trips, the range becomes very predictable.
Can you only use the Momentum MB-6 battery for M10/M6?

M10/M6 can use the MB6 battery or third-party batteries via the ME-1 External Battery Adapter. Connect the adapter to a 72 V power source with sufficient current capacity for the motor. For M10/M6, a continuous 150 A/h output is recommended.
How long is the accompanying cable?
The standard cable is 3 m. Both 1 m and 5 m are available as accessories. You can also connect multiple cables to extend the length with our IP67-rated connectors.
What is the warranty period for Momentum's products?
All our products come with a 2-year warranty for non-commercial use. 1 year applies for commercial use.
Why is the 72V platform an advantage?
A 72V system means lower current at the same power, which reduces heat generation and energy losses.
The result is more efficient operation, better efficiency, and stable performance even under high load.
How much does the MB6 battery weigh?

The MB6 battery weighs about 37 kg. One person can move and carry it. Just be careful with your back, and avoid dropping it on your feet.
How safe is the MB-6 battery in a marine environment?

MB-6 has an integrated advanced BMS (Battery Management System) that continuously monitors temperature, voltage, and current.
The system communicates with the engine and ensures that full power is only delivered when the system is properly connected, has an activated battery, and an active kill switch.
This provides high operational reliability and safe use on the water.
What is the operating voltage of M10/M6?

M10/M6 requires 72 V for the motor and 12 V for the trip computer and display. The MB6 battery or External Battery Adapter provides the necessary voltage supply. (Momentum Electric Marine USA)
Is there built-in GPS in the engines?
Yes, Momentum's motors include a GPS receiver that displays speed and calculates remaining range.
Can remote controls be used for the motors?

Yes, remote control options are available in different configurations for single or dual motor control, for top- or side mounting.
How is the shaft length of M10/M6 and U2 determined?

M10/M6 uses the same dimensions as traditional combustion engines. If your boat requires a 52 cm shaft for a standard outboard motor, choose the same shaft length for M10/M6.

U2 is a bit different; the engine power means that a cavitation plate cannot do a proper job. This, in turn, causes electric motors with this capacity to easily cavitate if they do not run deep enough. If you are a bit on the edge between long/short shaft, choose the longer one.
What is the chemistry in the MB-6 battery – and why is it important?

MB-6 uses Lithium-ion NMC (Nickel-Manganese-Cobalt) – a premium cell chemistry known for high energy density, strong power delivery, and good lifespan.

This means more range per kilogram, stable performance even at high power draws, and an optimal balance between power and durability – perfect for marine applications.
How much range do I get in relation to the weight?

With 6.4 kWh at 72V, the MB-6 delivers a lot of energy in a compact format (~37 kg).
The high energy density ensures that you get maximum range without compromising weight distribution or the boat's performance.
How long does the MB-6 battery last?

MB-6 is designed for over 1500 charge cycles at about 80% capacity, which corresponds to many years of normal use.

This means long-term investment security and low ownership costs over time.