Electric boat motors

Electric Boat Motor

Experience the future of boating with an electric motor from Alpina Marine Equipment. Our range of electric boat motors offers a unique sailing experience that is both environmentally friendly and comfortable. With an impressive range and intuitive control, these motors are perfect for both short trips and longer expeditions. Enjoy nature without noise and emissions as you sail towards the horizon.

How big an electric motor for a boat?

The size of the electric motor you need depends on several factors, including the size and weight of your boat, the typical load (number of people and equipment), and the conditions you expect to sail in (wind, waves, current).

- For smaller dinghies (approx. 100 kg): A 300-500W electric motor (approx. 30-40 LBS) may be sufficient.

- Rule of thumb for battery size: Many sailors use a 100 Ah battery as a good base size.

Some manufacturers make recommendations based on the weight of the boat. For example:

- Up to 500 kg: ePropulsion Spirit 1.0 PLUS (1 kW)

- Up to 1,500 kg: ePropulsion Navy 3.0 EVO (3 kW)

- Up to 3,000 kg: ePropulsion Navy 6.0 EVO (6 kW)

It is always a good idea to slightly oversize the engine so that you have sufficient power even in difficult weather conditions.

How far can you sail with an electric motor?

The distance you can travel on a charge depends on:

- Battery capacity (Ah): A larger battery gives longer sailing time.

- Motor power consumption: Higher speed and load increase consumption.

- Boat size and weight: A larger and heavier boat requires more energy.

- Weather conditions: Headwinds and waves increase energy consumption.

In general, you can expect:

- With a 100 Ah battery, you can sail for 6-8 hours in calm conditions and at low speed.

- At full power, sailing time can be around 1 hour for a smaller boat with a 75 Ah battery.

- The speed is typically between 5-15 km/h depending on the conditions and engine power.

For longer trips, it is a good idea to have access to charging or bring extra batteries .

Which battery for electric motor boat?

For an electric motor in a boat, a deep cycle consumer battery or a lithium battery is typically recommended.

Deep cycle batteries (AGM or GEL): These batteries are designed to be deeply discharged and recharged many times. AGM and GEL are maintenance-free and safer than traditional wet cell batteries. They are often a reasonable compromise between price and performance.

Lithium batteries (LiFePO4): Lithium iron phosphate batteries (LiFePO4) have the best weight/performance ratio, are very safe and have a long lifespan. They are typically more expensive to purchase, but can be the cheapest solution over the battery's lifetime, especially for frequent use or for higher energy needs.

Important considerations when choosing a battery:

- Capacity (Ah): Determines the sailing time.

- Voltage (V): Electric motors typically use 12V, but 24V and 48V systems are also available for larger motors.

- Weight and size: Lithium batteries are generally lighter and more compact.

- Maritime environment: The battery must be suitable for maritime conditions and be able to withstand vibrations and moisture. A battery case is recommended to protect the battery.

It is a good idea to consult with an expert to find the best battery solution for your specific boat and needs.