Reliable Power While Sailing
Generate 50-500W from 3 knots — Never worry about running out of battery
Hydro Charger Universal SWI-TEC
The ultimate solution for generating power while sailing
Proven technology for over 20 years and more than 30,000 nautical miles. Generate clean, renewable energy from 3 knots. Marine-grade 316 stainless steel construction. Smart controller with Android app monitoring.
Ready to install in 30 minutes
Works day and night, with or without sun
Compatible with solar and wind systems
Recognized by nautical experts
Reviews and analysis in leading marine publications
Features
Designed for sailors who demand reliability and performance
Lightweight Design
Only 8 kg with 316 stainless steel construction — perfect for any vessel, from compact sailboats to catamarans
Smart Controller
Monitor via Android app with Bluetooth — no SIM needed. View voltage, current, Ah charged, temperature and GPS speed
Simple Installation
Fully assembled — installation in 30 minutes with basic tools. No complex configurations
Versatile Use
Ideal for coastal cruising and offshore sailing — proven in transoceanic voyages
Zero Operating Costs
Zero fuel, zero emissions — investment that pays for itself through fuel savings
Silent and Automatic
Generates electricity without noise or vibrations. Forget about starting gasoline generators
Globally Proven
Over 20 years on the market. Sailors worldwide trust our technology for voyages over 30,000 miles
Custom Propeller
Propeller pitch pre-adjusted at factory according to your vessel's average speed for maximum efficiency
Why Hydro Charger instead of other energy sources?
The only solution that generates power while sailing, day or night
| Feature | Hydro Charger | Solar Panels | Gasoline Generator |
|---|---|---|---|
| Works at night | |||
| Works while sailing | |||
| Silent | |||
| No fuel | |||
| Up to 500W | |||
| Maintenance | Minimal | Minimal | High/Expensive |
| Total weight | 8 kg | Variable | 15-30 kg |
| Operating cost | €0 | €0 | High |
Keep everything on board running:
Fridge and freezer
Navigation electronics and autopilot
LED lighting
Device charging
Entertainment systems
Water maker (combined with solar)
How it works
As simple as lowering the generator into the water and sailing
Mount
Choose your bracket type and install on transom or swim platform. Installation in 30 minutes with basic tools.
Deploy
Lower generator into water while sailing — automatic lock engages. Recommended depth: minimum 30 cm.
Generate
Start producing power from 3 knots — charge batteries automatically. At 6 knots: enough for all your onboard consumption.
Monitor
Track performance via Android app in real-time. Full control: voltage, current, temperature, GPS speed.
What sailors say
Real experiences from sailors around the world
Llevo 8 meses con el Hydro Charger en mi velero de 38 pies y es lo mejor que he instalado. En travesías largas, a 5-6 nudos ya genera suficiente para mantener la nevera, electrónica y piloto automático sin tocar el motor. La app es muy útil para ver en tiempo real lo que produce. Instalación sencilla, lo monté yo solo en una tarde.
We crossed from UK to Canaries last autumn with the Hydro Charger running most of the way. Brilliant piece of kit. Silent, reliable, and at our average 6 knots we were generating around 200W constantly. Battery never dropped below 80%. The Android app makes monitoring dead simple. Worth every penny.
We crossed from UK to Canaries last autumn with the Hydro Charger running most of the way. Brilliant piece of kit. Silent, reliable, and at our average 6 knots we were generating around 200W constantly. Battery never dropped below 80%. The Android app makes monitoring dead simple. Worth every penny.
Hi we are now in East London South Africa, we sail around the world with the hydrocharger and from start from Stockholm that will be over 30000 seamile.
And we are very happy with the hydrocharger we have so much power so we can sail. This trip had not been so easy without the hydrocharger and we properly have to change batteries, now we always have batteries fully loaded.
Llevamos dos años navegando por el Mediterráneo con nuestro Hydro Charger y ha sido la mejor inversión que hemos hecho. Pasamos semanas fondeados en calas sin necesidad de ir a puerto para cargar baterías.
Lo mejor es que no requiere mantenimiento complejo - solo enjuagar con agua dulce. La combinación con nuestros paneles solares nos da energía 24/7. Ahora podemos trabajar remotamente desde el barco sin preocuparnos por quedarnos sin electricidad.
Totalmente recomendado para quien quiera vivir a bordo sin depender de marinas.
Hi we are now in East London South Africa, we sail around the world with the hydrocharger and from start from Stockholm that will be over 30000 seamile.
And we are very happy with the hydrocharger we have so much power so we can sail. This trip had not been so easy without the hydrocharger and we properly have to change batteries, now we always have batteries fully loaded.
95% of customers recommend Hydro Charger
4.8/5 average rating
Thousands of units installed worldwide
20+ years in the marine market
Technical specifications
Precision engineering for marine environments
Performance and Power
Construction and Dimensions
Intelligent Control System
Mounting Options
Battery Compatibility
Operating Conditions
Mounting options
Choose the perfect bracket for your sailing style
Pendulum Mount
SKU: 7111
Auto-leveling up to 25° — keeps generator vertical while sailing
Ideal for:
- Offshore sailing and long passages
- Sailboats with frequent heeling
- Intensive use (more than 10 days per year)
Advantages:
- Auto-leveling up to 25° per side
- 180° rotation for maintenance and cleaning
- Automatic lock in vertical position
- Deployed with line from deck
Specifications:
Weight: 1.6 kg
Dimensions: 5 × 20 × 5 cm
Includes: Reinforcement backplate, stainless steel hardware
Swim Platform Mount
SKU: 7110
Detachable angled mount — quick-release for clear swim platform
Ideal for:
- Catamarans and multihulls
- Boats with large swim platform
- Coastal and medium-distance sailing
Advantages:
- Quick removal with handle
- Discreet permanent base
- Platform clear when not in use
- No interference when boarding/disembarking
Specifications:
Weight: 2.1 kg
Dimensions: 20 × 5 × 22 cm
Includes: Reinforcement backplate, stainless steel hardware
Fixed Stern Mount
SKU: 7109
Simple secure mounting for coastal sailing
Ideal for:
- Coastal sailing (1-3 day trips)
- Small sailboats (up to 35 feet)
- Budget-conscious
Advantages:
- Most economical installation
- Direct mounting on transom
- Angle adjustment via perforated plate
- Option for second bracket for port/starboard
Specifications:
Weight: 1 kg
Dimensions: 5 × 20 × 2 cm
Includes: Reinforcement backplate, stainless steel hardware
Not sure which to choose?
Answer these questions:
How many days per year do you sail?
→ More than 15 days = Pendulum Bracket
Do you have a swim platform?
→ Yes = Swim Platform Bracket
Only coastal sailing?
→ Yes = Fixed Bracket
Does your boat heel a lot?
→ Yes = Pendulum Bracket (auto-leveling)
Still have doubts? Contact us and we'll help you choose:
Accessories
Complete your system for maximum performance
Remote Display 12V
SKU: 7108
The independent display can be permanently mounted near your helm or chart table to monitor battery status and charging current at any time.
Advantages:
- 3-meter cable included
- Permanent mounting
- Control without mobile device
- High contrast display
Carry Bag
SKU: 7112
Protective storage bag for hydro generator. Made from water-resistant material.
Advantages:
- Protection during transport
- Organized storage off-season
- Reinforced handles
Propeller Protector
SKU: 7113
3-piece protective cover for propeller. Prevents damage during transport and storage.
Advantages:
- Blade protection
- Easy assembly/disassembly
- UV-resistant material
Experience the power of water
Interactive Simulator
Adjust the speed and see live how each knot converts into energy for your vessel.
From 3 knots it starts generating clean energy. Higher speed, more power: from 50W up to 500W depending on your sailing conditions.
Deploy the hydro generator to activate generation. Minimum speed: 3 knots.
Configure your perfect system
Manufacturer and Official Store
Frequently asked questions
Everything you need to know before buying
At what speed does it start charging?
From 3 knots it already generates usable electricity. At 5-6 knots you produce enough power to cover typical onboard consumption (fridge, electronics, lights).
How much energy does it really generate?
It depends on your speed: 4 knots ~80W, 6 knots ~200W, 8 knots ~400W, 10 knots ~500W (maximum)
Does it work with lithium batteries?
Yes, but it is essential to consult with your battery manufacturer beforehand and install a cut-off relay between the Hydro Charger and the controller. Without these steps, the controller can be damaged.
Do I need special tools to install it?
No. You only need: 17mm socket wrench (for propeller), 13mm wrench (for bracket), 6mm Allen key (for backplate) and basic screwdriver. Typical installation: 30-45 minutes.
What maintenance does it need?
Minimal maintenance: rinse with fresh water after sailing, periodic visual inspection (bolts, cable), propeller cleaning if dirty, and apply protective oil before storage. No complex moving parts to fail.
Can I use it together with solar panels?
Yes! It's the perfect combination: Solar panels generate energy during the day, Hydro Charger generates energy while sailing (day/night). Result: always charged batteries. The controller manages both sources automatically (in 24V version: up to 400W solar + 600W hydro).
What happens if the propeller hits something in the water?
The system is designed to resist minor impacts. However, damage from ropes, fishing nets, floating objects, or algae is not covered by warranty. Recommendation: raise the generator when navigating in areas with lots of floating debris or in ports.
Which bracket do you recommend?
Coastal sailing (1-5 days): Fixed Bracket (7109) - €118.58. Catamaran or swim platform: Swim Platform Bracket (7110) - €196.02. Offshore / Passages / Frequent heeling: Pendulum Bracket (7111) - €297.66
How long does shipping take?
We ship from Mallorca (Spain): Peninsula 3-5 business days, Balearic Islands 2-3 days, Canary Islands 5-7 days, International 7-14 days.
Does it have a warranty?
Yes, full warranty: Duration 24 months or 8,000 nautical miles (whichever comes first). Coverage of manufacturing and material defects. Service in Porto Cristo, Mallorca. Exclusions: damage from floating objects, misuse.
Can I install it myself or do I need a professional?
Most sailors install it themselves following the included manual. You only need basic DIY skills, common tools, and 30-45 minutes. If you prefer professional installation, we can recommend a nearby distributor.
Can't find your answer?
Our team is here to help you
Sail Without Energy Limits
Join thousands of sailors already enjoying unlimited energy on board
Always charged batteries
Effortless and worry-free
Up to 500W of power
Clean and silent
30-minute installation
Ready to use
24-month warranty
Or 8,000 nautical miles
Support in English
From Mallorca
Fast shipping
From Spain
Complete system from
Complete system with bracket included
Need Personalized Advice?
Our team of experts helps you choose the perfect system for your vessel
Visit us
Porto Cristo, Mallorca
Mon-Fri 9:00-18:00 (CET)
100% Secure Purchase
SSL encrypted payment
Warranty
24 months or 8,000 miles
Returns
14 days no questions asked
Insured Shipping
From Mallorca
Made in Europe
SWI-TEC — Over 20 years of marine innovation