Now you can have enough power on board with our new  Hydro Charger

Charge your batteries under sail by putting the generator in the water

Combined water power and solar power with an intelligent Converter Charger


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  • For 12/24 Volts systems
  • Programmable idler neutral gear voltage e.g. 14,4 V
  • 40 A / 12 V maximum current
  • Max. current programmable depending on battery capacity
  • Programmable converter charger with digital display
  • Solar panel connection up to 400 W / 16 A
  • 20 A / 12 V socket for watermaker, inverter 220 V / 50 Hz for charging cellular phones, TV, PC etc.



  • Smooth running through specific planetary gear
  • Low ratio prevents high motor speeds
  • Optimised efficiency through specific transmission
  • Double seals (2 O-rings each)
  • Multiple-bearing propeller shaft
  • Easy to dismantle
  • Hard anodized aluminium housing and special synthetic cover.
  • Streamlined anodized aluminium body
  • All screws (A4) are additionally protected against corrosion by Duralac
  • No propeller forces transmitted to the gearbox due to special coupling
  • Almost inaudible in the water
  • Charging from 4 knots upwards (depending on the preset incline of the propeller blades)



  • Main body manufactured in a special synthetic material
  • Stove enamelled aluminium propeller blades.
  • Blade angle is infinitely adjustable depending on type of the boat (speed)
  • Propeller blades are replaceable (i.e. after collision)
  • Blades CFD (software for numerical solutions) are designed specifically for generator with optimized form and twisting



  • Up to 16/32 volt adjustable, perfect to compensate voltage loss
  • With built-in free wheel (propeller turns freely when fully reaches the max. retained battery voltage)
  • Additional connection for solar panels or wind generator
  • Additional connection for direct output, which will be automatically shut down when it has sufficient battery voltage.
  • Transom bracket system
  • Solid stainless steel construction (Aisi 316)
  • Quick fastener device for mounting on transom bracket
  • Foldable on full speed throught 4x ratio line reduction
  • Generator blocks in working position, no pressure on line (easy release means light pulling on the red line)
  • Can be folded in fully upside position (for ex. in harbour)
  • Lateral stoppers to avoid generator hitting on transom
  • NEW: included, digital display
  • NEW: additional switch for free wheel
  • NEW: additional alarm when battery is completely charged
  • NEW: more potential

Art. Nr. 7147 for 12V /7148 for 24V
Basic bracket for transom

Hydro Charger komplett

Stainless steel bracket with adjustable segment, folding-up with a line. Folding under speed is no problem, because there is a line reduction with 4x ratio.
Also there is a blockage when the generator is in the water. Quick fastener device for mounting on transom bracket.

Generator with Converter Charger without mounting bracket
Generator part: Gear drive with shaft, propeller and programmable converter charger with digital display and 4 m 3-core cable
Performance: Generates power from 4 knots (depend boat and adjustment of the propeller)
Output: 50 to 500 Watts depending on speed and battery load
Generator Dims.: Gear drive with shaft with bracket: 1100 x 100 mm, propeller diameter 360 mm

Rated Power: 1000W (Best ratio: Hydro Generator 600W, PV cells 400W)
Applicable batteries: 12V/24V from 200Ah/100Ah (voltage detected automatically)
Battery full charge cut: 14.4V/28.8V (default adjustable up to 16V/32V depending cable loss)
Battery low voltage disconnect load: 11V (default)
Load on voltage: 12.44V (default adjustable)
Load current max: 40A
No load loss: ≤45mA
Dimensions: 278×133×75 mm
Weight: 1.6 kg
Working environment: Working temperature: -10-50°C Relative humidity: 0-90% (no outside mounting, only inside the cabin)
Weight: Generator, converter charger, basic bracket and propeller: approx. 18 kg
Included in delivery: Generator, converter charger, basic bracket for transom, propeller including transom mount bracket and plug

Art. No. 7220
Additional bracket for transom

Design: Stainless steel bracket with middle section in plastic and counter plate. Including screws, nuts and security bolt
Dimensions: 260 x 70 x 30 mm
Weight: approx. 2 kg

Art. No. 7210
Support for swim platform

Dimensions: 265 x 70 x 260 mm
Weight: approx. 2.4 kg