Rutland FM910-4 Furlmatic Windcharger

Without doubt the engineer’s choice of micro wind turbine for battery charging at off grid locations.

Rutland FM910-4 Furlmatic Windcharger


Cut In Windspeed: 2.5 m/s (5.6 mph)

Available in 12V or 24V

The FM910-4 Furlmatic is without doubt the engineer’s choice of micro wind turbine for battery charging at off grid locations. Countless organisations worldwide have installed tens of thousands of Furlmatics because, simply, their reliability in the toughest weather conditions is so well proven.

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Telephone: 0333 090 4007

For more information about this product, to check delivery times or to find out about having this product installed please give us a call on the number above or please drop us an email at

Product Variations:

Output Voltages Available: 12V or 24V

Installation Service Available:

Solar Carports and Canopies Installed Across the UK
Solar Panels & EV Chargers Installed Across South-West England.
For an informal chat or a formal quote please do contact us.
ZERO RATED VAT FOR DOMESTIC INSTALLATIONS: In Great Britain (England, Scotland, and Wales), from 1st April 2022 up to and including 31st March 2027, solar panels and several other energy-saving material installations are temporarily zero-rated for VAT. Please note, this zero rate only applies to installation in residential properties.
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Recommended for Exposed or Unattended Sites.

Rutland FM910-4 Furlmatic Windcharger

Designed for applications based on land the FM910-4 Furlmatic is a high wind site version designed for professional and industrial users. A furling tail turns the turbine out of winds above 16 m/s (35 mph) to protect the system in gales. Robust mechanical design combined with latest 3 phase generator makes it the ideal battery charger for low energy applications. 

Recommended for exposed or unattended sites. Epoxy coated galvanised steel case & tail. Stainless steel fasteners throughout. Mounts onto 41mm inside diameter tubing or 40mm medium gauge galvanised pipe.

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Rutland FM910-4 Furlmatic Windcharger

Rutland Windchargers are without doubt one of the most unique and versatile battery chargers in use throughout the world.

The Rutland FM910-4 combines our proven furling tail system and latest 3 phase generator technology with a new aerodynamically shaped body style. This combination of the established and the modern means that our customers can be sure of great power performance and reliability over many years service. Primarily designed for land based applications, the Rutland Furlmatic has been used worldwide to provide year round power generation.

  • Efficient power conversion
  • Rutland Windchargers generate greater ampere hours in real wind conditions than turbines of equal and often larger diameter! This is because our unique high inertia alternator designs maintain momentum between gusts unlike other designs that stall and have to rebuild up speed. This Rutland “flywheel” action results in more free power generated into your battery.
  • Rutland Windchargers are the lowest cost per watt of power generated owing to our many in-house manufacturing efficiencies and volume of production for our worldwide customers
  • More ampere hours are generated because of the Rutlands’ low wind speeds start up (of just 2.6 m/s) so power is being generated in the most typical wind speeds as well as being powerful in the strong winds
  • Automatic ‘furling’ tail fin directs turbine out of wind above 16 m/s for gale protection
  • Our low friction 3 phase alternators give a smooth and silent output
  • Computer designed efficient aerofoil blades. The fine profile blades have a positive one-way-only fit that have been tested to withstand a loading with a safety factor 10 times the turbine’s maximum rpm.
  • EEC directive 89/336/EEC compliance ensures no radiated interference
  • Automatic thermostat protection in prolonged gales
  • Modern, durable materials for excellent reliability and product longevity
Solar Panel and EV charger installation across south-west UK

Installation Service

available across the south-west

KaraSolar can offer a complete installation and maintenance service for Solar PV Systems, EV Chargers, Wind Turbines and Solar Carports. We can supply and install all that is required for on/off-grid systems and from small domestic systems to large commercial solar generation projects.

Our professional, polite, friendly and helpful team can work with you to ensure you not only get the system to match your exact requirements but that every step of getting your system installed is monitored and cared for by your own project manager. For an informal chat or a formal quote please do get in touch.

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Rutland FM910-4 Furlmatic Windcharger



Marlec construct their Rutland wind turbines using a range of modern and traditional high quality materials which are designed to endure in a marine environment. They have innovated in their field by introducing light weight but robust high density nylon and glass reinforced materials. These materials are UV stable and used alongside marine grade aluminium, stainless steel. The sealed for life bearings and other carefully selected and precision worked materials are manufactured in their UK factory.


Turbine Diameter: 910 mm
Turning Radius: 794 mm
Net Weight: 13.1 kg

Power / Current Ratings:

5m/s     10knots 19W (1.4A) 19W (0.7A)
11m/s   21knots 92W (6.6) 92W (3.3A)
15m/s   29knots 155W (11.2A) 155W (5.6A)

Output Voltages Available:

12V / 24V


Generator Type: Low friction 3 phase, brushless.
Yaw Rotation: Slipring for 360° free rotation. Low brush wear.
Governing Devices: Tail fin mechanically furls at 15m/s to reduce turbine speed.
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Our Guarantee to You

Rutland Windchargers are designed, developed and manufactured in the UK by Marlec. Comes with a 2 year warranty. With over 35 years of experience in their field Marlec continuously develop designs and materials to ensure their products withstand the rigours of the testing environments that our customers put their Windchargers through. You can buy with confidence that their products will endure, will meet claimed specifications and that you are buying a product that has sold, in its versions, worldwide in excess of 100,000 units fully supported by our sales and engineering teams.





Rutland FM910-4 Furlmatic Windcharger

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Solar Carports & Canopies:

KARASOLAR can supply and install modular car parking solar carports and canopies. Our solar canopies can include Rolec EV Charging and/or BYD Battery Storage if required.
Our car parking systems are totally modular, you can connect as many units together as you wish.

Offer EV Charging From Your Carpark:

Earn extra income from your car park by offering pay-to-charge or offer your customers and visitors free charging.

If you would like to discuss how KARASOLAR can help your home, your company or your car park please do get in touch.