Fusion Batteries

The FM+ 650 Battery is compatible with both the Fusion and Assist MAX+, while the Fusion 860 Battery is designed exclusively for the Fusion.

Gen2 Assist MAX and Slim batteries are compatible only with their respective systems.

Runtime varies depending on rider weight, skill level, board and wing size, throttle use, and water and weather conditions. The figures below are indicative real-world averages.

Fusion 860 Battery

E-Foil

• Intermediate: ~39 minutes
• Advanced: ~61 minutes

Surf

• Intermediate: ~50–80 minutes
• Advanced: ~80–110 minutes

FM+ 650 Battery

E-Foil

• Intermediate: ~29 minutes
• Advanced: ~48 minutes

Surf

• Intermediate: ~40–50 minutes
• Advanced: ~55–70 minutes

How are these runtime figures measured?

The E-Foil figures are based on an 85 kg rider using an 800 cm² wing and 5'0" 40 L board in flat-water conditions, with the throttle at approximately 70%. An intermediate rider will typically have multiple touch-downs, falls and restarts, while an advanced rider has no touch-downs or falls.

The Surf figures are based on an 85 kg rider using an 800 cm² wing and 5'0" 40 L board in approximately 3 ft swell with less than 5 knots of wind. An intermediate rider has high motor reliance and does not pump between waves, with multiple falls and restarts. An advanced rider has medium motor reliance, links some waves by pumping, and has minimal falls and restarts.

Please note: Runtime can vary significantly depending on rider weight, skill level, gear sizing, throttle use, wave conditions, wind and other environmental factors. These figures are intended as an indicative guide based on real-world averages, not a guaranteed runtime.

No. Always check your airline guidelines and the watt hour rating of your battery before flying.

We are working on a solution for travelling with your Foil Drive.