Micro wind turbine 12V 90W M-300 — starts at 1.5 m/s | MR WATT
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High-performance 90W M-300 12V micro wind generator with integrated regulator

The M-300 12V micro wind generator with 90W is the plug and play solution for producing energy from the wind in remote locations. It starts up with very weak wind — just 1.5 m/s (about 5 km/h) — and thanks to the integrated charge controller, it connects directly to 12V batteries without additional components. Perfect for off-grid systems, campers, sailboats, cabins, mountain shelters, and remote video surveillance systems.

€122.00 Tax escl.

The M-300 12V micro wind generator is designed for those who need clean energy in locations where the power grid does not reach. With a rated power of 90W and an output voltage of 12V DC, it integrates perfectly with any off-grid system or 12V battery — even in parallel with an existing photovoltaic system.

Start-up with minimal wind

One of the most appreciated features of the M-300 is its exceptionally low start-up speed: just 1.5 m/s, equivalent to about 5 km/h. This means the generator begins producing energy even with a light breeze, maximizing production hours throughout the year. The maximum operating wind speed is 25 m/s, ensuring robustness even in strong wind conditions.

Integrated charge controller — no accessories needed

The M-300-12 includes a charge controller already integrated into the machine body. There is no need to purchase or install external components: simply connect it directly to the 12V battery. The controller automatically manages charging, protecting the battery from overcharging. It can be connected in parallel to the batteries of a 12V off-grid photovoltaic system, creating a more reliable and continuous solar+wind hybrid system.

Lightweight aluminum construction

The machine body is made of aluminum, a lightweight material, resistant to corrosion, and with excellent heat dissipation. The 6 plastic blades have a diameter of 82 cm and an aerodynamic profile optimized to maximize wind capture at low speeds. The low weight (10.5 kg) makes installation on a pole, roof, or boat mast easy, even without special equipment.

Typical applications

The M-300 12V micro wind generator is ideal for:

  • Off-grid systems — homes, cabins, shelters, and remote locations not connected to the grid
  • Campers and caravans — charging service batteries while parked or on the move
  • Marine use — sailboats and motorboats, installation on mast or stern arch
  • Solar+wind street lighting — supplements panels during nighttime or cloudy hours
  • Remote radio links and video surveillance — continuous power supply for equipment in isolated areas
  • Environmental monitoring — weather stations, wildfire detection, off-grid IoT sensors

Technical specifications

  • Rated power: 90 W
  • Rated voltage: 12V DC
  • Minimum wind speed (cut-in): 1.5 m/s
  • Maximum wind speed (cut-out): 25 m/s
  • Number of blades: 6 (plastic)
  • Rotor diameter: 82 cm
  • Body: aluminum
  • Charge controller: integrated
  • Weight: 10.5 kg
  • Packing dimensions: 47 × 41 × 33 cm
Solmax
M300-12
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