Searching Duotone in Batteries and Chargers
Need a battery or charger for your foil assist? GlissEvolution in Pornichet offers the full Foil Drive and Duotone Electric range in stock. Specialized after-sales support and advice to choose your range!
En savoir plusFoil Assist Batteries and Chargers: Range, Travel, and Care
Updated July 2026
Your Foil Assist's battery is its beating heart, dictating your range, the overall weight you feel, and whether you can take it on a plane. These high-performance, waterproof lithium batteries are specifically engineered to power both Foil Drive and Duotone Electric systems. Here at GlissEvolution, your trusted shop in Pornichet since 2005 with fifteen years in electric mobility, we stock all the batteries and chargers from both brands and provide full after-sales support. This section is part of our Foil Assist universe; be sure to check out our complete kits, accessories, and boards too.
Which Capacity for Which Range?
The higher the capacity (in Wh), the longer your session will be, but the heavier the battery. Your actual range also depends on your weight, the foil you're riding, and how intensely you use it. When you're in boost mode, where the motor is only used for take-off, you'll see a significant increase in range.
| Battery | Capacity | Indicative Range | Airplane |
|---|---|---|---|
| Foil Drive Slim | Approx. 160 Wh | 25 to 40 min | Yes (under 160 Wh) |
| Foil Drive Slim Travel | Modular, approx. 178 Wh | 20 to 40 min | Yes (3 modules) |
| Foil Drive MAX Sport | approx. 320 Wh | 35 to 50 min | No |
| Foil Drive MAX Travel | Modular, approx. 356 Wh | 25 to 50 min | Yes (modules) |
| Foil Drive MAX Power | approx. 500 Wh | 45 to 70 min | No |
| Foil Drive Fusion | approx. 860 Wh | several hours | No |
| Duotone (two batteries) | 159 Wh each | 35 to 60 min | Yes (under 160 Wh) |
Chargers
The standard Foil Drive charger will fully recharge a battery in two to three hours, depending on its capacity, while the fast charger cuts that time down to just one to one and a half hours. Duotone's Smart Charger can power up a battery in about forty-five minutes, and their charging station lets you manage multiple batteries at once. A good charger means less downtime and more time on the water between sessions.
Traveling by Plane (IATA 160 Wh limit)
Air travel regulations limit lithium batteries to 160 Wh in your carry-on. Duotone batteries (159 Wh) and the modular Travel versions of Foil Drive, which break down into modules below the limit, are permitted in the cabin. Larger batteries like the Fusion must remain on the ground. Always double-check your airline's specific conditions before you fly.
Care for Your Lithium Battery
After every session in the sea, rinse and dry the connectors with fresh water. Apply contact grease to the connectors to prevent corrosion. Store your battery with a 40 to 60 percent charge in a cool, dry place, and never leave it completely discharged or exposed to extreme temperatures. These simple steps will significantly extend its lifespan.
Which Battery for Your Riding Style?
For wing and surf foil, prioritize lightness: a Foil Drive Slim or the waist-mounted Duotone battery will help you maintain the classic foil feel with occasional boost. For downwind runs and long distances, a MAX Power battery provides the range you need to compensate for the added weight. If you're traveling, only modular Travel batteries or Duotone 159 Wh batteries are allowed in the cabin.
The brands we offer
- Foil Drive: Slim, MAX, and Fusion ranges, with modular Travel versions for air travel.
- Duotone Electric: 159 Wh waist-mounted batteries, Smart Charger, and charging station.
Frequently Asked Questions
What's the range of a Foil Assist battery?
You can expect 25 to 40 minutes from a small battery (around 160 Wh), and several hours with large-capacity Foil Drive batteries. Duotone batteries offer 35 to 60 minutes. Actual range depends on rider weight, foil, and intensity.
Can you fly with a Foil Assist battery?
Yes, with Foil Drive Travel versions, which disassemble into modules that meet airline limits, and Duotone 159 Wh batteries (cabin baggage only). Always check with your airline before flying.
How long does it take to recharge a battery?
With the standard Foil Drive charger, two to three hours depending on capacity; one to one and a half hours with the fast charger. Duotone batteries recharge in about forty-five minutes with the Smart Charger.
What's the difference between Foil Drive Slim and MAX ranges?
The Slim range prioritizes lightness and a compact size, making it ideal for wing and Surf foil. The MAX range offers more capacity and power, perfect for downwind and long sessions.
How do you maintain your Foil Assist battery?
Rinse and dry the connectors after each session, grease them, and store the battery with 40 to 60 percent charge, in a cool, dry place. Avoid total discharge and extreme temperatures.
Where can you buy Foil Assist batteries?
At GlissEvolution in Pornichet, a major Foil Drive reseller in Europe and official Duotone Electric distributor. We stock batteries and chargers and offer specialized electronics after-sales support.
Why choose GlissEvolution?
With twenty years of watersports experience since 2005 and fifteen years in electric mobility through Mobility Evolution, we're experts in lithium batteries and electronic diagnostics. Our Pornichet workshop handles diagnostics, repair, cell replacement, and updates, and we'll help you choose the perfect battery for your riding style and your weight. Plus, enjoy free shipping on all orders over €100.
Find Us
Visit GlissEvolution at 2c avenue du Gulfstream, 44380 Pornichet (Loire-Atlantique). You can reach us by phone at 09 62 64 74 77. We're open Tuesday to Saturday, from 10 am to 1 pm and from 3 pm to 7 pm.
