FAQ’s
Our standard AC Charging system can charge with about 100 kW system can charge a standard Krensen system (a 100kWh battery) in about hour if there is an AC outlet big enough to support the onboard charger. Whilst our DC supercharging 300kW system can be charged in less than 30 minutes.
The inboard 400 hp system is available now to order in Norway and Europe in 2021. The outboard 150 hp will be available in Norway spring/summer 2021 and selected European markets towards the end of 2021. We are moving into the North American market in 2022 and the rest of the world from 2023.
A boat, in Krensen’s view, is between 0 and 15 meters or 0 and 50 feet. Our system is best suited to inboard planing hull boats between 20 and 30 feet. The reason is that size affects energy consumption, at the same time as having fairly heavy ICE systems installed. However, when removing an ICE system either in real life or during planning for new boats, this will free up a lot of weight that can be used for the electric propulsion system. Since the motor and converter typically only weigh between 100 and 200 kg (depending on the specification on the boat) that again means there is a lot of room for the batteries, which can give an acceptable range for most.
Krensen®’s standardised turn-key system can be used in both new and used boats.
Silence, zero emissions, and low operating costs are the core benefits of an electric propulsion system. Krensen’s system will not compromise your current boat usage, using your boat how, when, and where you want. The use of a lightweight electric motor, efficient battery management, and maritime batteries make this possible.
Electric propulsions systems are highly reliable. The reason for this is the simplicity of an electric motor linked to our marine electric management system. Simply put, our system has four moving parts, whilst on average a combustion engine has over 2000 parts. This explains how Krensen® can achieve a highly reliable and robust system.
We have regional partners for retrofitting. Contact us for more information.
Krensen’s computerized engine controller can be set with parameters that match the stern drive’s torque ratings. Retaining the existing propeller is most likely an option, as the computerized engine controller and electric motor can be selected to match rpm and torque. However, changing the propeller may be desirable in order to achieve increased operational efficiency. In a retrofit, we will usually recommend that the stern drive be changed at the same time as the propulsion system. The main reason is that when an ICE goes in gear, it connects at 600 – 1000 rpm which can be really hard on the stern drive. This is avoided with an electric drive, as it can connect to the stern drive at 0 rpm. We recommend you start with a “clean sheet”, by replacing your sterndrive, so you do not have any unpleasant surprises.
Unlike ICE, the full torque of an electric motor can be available from 0 rpm (depending on your programming choices). Thus an electric propulsion system allows you to achieve a plane with your boat more efficiently and faster.
You can add solar panels to your boat and integrate them with our system in the future as an option. However, the limited surface area on a boat, plus the additional weight of the panels may reduce the effectiveness of adding solar panels. Therefore, for optimal speed and range, we recommend that one use land-based charging stations in addition to onboard solar system installation, but this depends hugely on the boat.
This is fully dependent on the boat and how big a system is installed. As a general rule, you can expect a higher top speed than with your current ICE installation.
This is fully dependent on the boat and the size of the system that you put in it. However, with today’s battery technology you can expect between 25 to 50 nautical miles at a planing hull speed. At a slower speed, below hull speed (approximately 5 knots for a 25-footer), this range can be quadrupled.
ICE stands for an Internal Combustion Engine. The majority of marine inboard and outboard engines are ICE.
