Foil Drive FM+ 650 Battery

Foil Drive FM+ 650 Battery

eFoiling Power & Range

Sizes: 650 Wh

Power your session with the FM+ 650 Battery and get back out on the water with full confidence. Designed to integrate cleanly into your eFoil setup, this power cell provides the energy required for sustained carving and cruising. You'll appreciate the reliable output and smooth power delivery every time you engage the throttle. Whether you are replacing a primary unit or adding a spare to expand your session time, the FM+ 650 Battery keeps you riding without interruption.

What Foil Drive has to say:

The FM+ 650 Battery is engineered to deliver dependable energy output for active eFoilers. Constructed with robust casing and marine-focused component protection, this power pack ensures steady performance session after session.

Designed for straightforward swapping and seamless connectivity, it helps minimize downtime between rides so you can spend more time on the foil.

Who is this for?

This battery is for eFoil riders who need a primary power unit or an additional battery to swap out at the beach and extend their overall session time.

Design Profile:

A durable, high-output eFoil power cell built for marine environments and dependable energy transfer.

Performance Features:

• Steady energy output for smooth carving and continuous flight
• Rugged marine-grade construction to handle saltwater and freshwater conditions
• Direct connection interface for quick board integration and battery swaps

Details:

Gen2.5 Battery Technology allows the rider to utilize the battery for longer. The battery is able to perform “deeper” into the cycle, meaning on water you’ll be able to enjoy the full power delivery right down to ~10% battery before you begin to notice the “sag” that all batteries experience.

Charging 
The FM+650 Battery requires 43V Charger (Provided with your Fusion or MAX+ System) to charge. Averaging 85 minute charge time with an industry first Storage Mode that allows you to limit charging to then store your batteries for long-term battery health. We recommend storing you battery between 30 and 60% State of Charge (SoC).

Intelligent Bluetooth Module (BMS) provides accurate battery data to the V3 Controller, giving clear percentage and status readouts. The Battery also connects to the Foil Drive App where you can name each battery, track its health and view it's battery State of Charge (SoC). Check the surf camera and your battery charge without lifting a finger!

One-piece molded design combines the battery and nose cone as a unified sealed unit.
The integrated one-piece molded design combines the battery and nose cone as a unified sealed unit, improving water flow, and durability, all while balancing weight directly over the foil’s center of lift.

Internal thermal management keeps temperature stable and maintains consistent power through the full discharge curve, ensuring smooth thrust delivery from start to finish.

Tech Specs:

• Rated Capacity (Watt Hours): 648Wh
• Amp Hours: 15 Ah
• Nominal Voltage: 43.2 V
• Max Voltage: 50.4 V
• Battery Weight: 3.95 kg / 8.70 lbs
• Dimensions of Battery: L460 × W125 × H55 mm
• Dimensions Installed:  L540 x W125 x H55mm (Installed with MAX+) | 658x125x55mm (Installed with Fusion)
• Nose Cone: Not Required - Integrated
• Battery Type: Lithium-Ion
• Water Rating: IP69 +IP69 Water and Dust Resistance
• Certified: UN38.3, CE, FCC, WEEE, RoHS, PSE, IP68, IP69

Note: Proper care is essential for battery longevity, please see your Battery and Charger user manuals for more.

*E-Foil Runtime Intermediate: ~31 mins

*E-Foil Runtime Advanced: ~52 mins

**Surf Runtime Intermediate: ~55-70 mins

**Surf Runtime Advanced: ~40-50 mins

Runtime is highly variable depending on skill, weight, gear sizing and weather conditions. This is an indicative guide only based on real life averages.

*Based on rider weight 80kg, with wing size of 800cm2, 5'0 40L board in flat water conditions. Throttle at ~70%.Intermediate rider has many touch downs and multiple falls/restarts. Advanced rider has no touch downs and no falls.

**Based on rider weight 80kg, with wing size of 800cm2, 5'0 40L board in 3ft swell, with less than 5kts wind. Intermediate rider has high motor reliance and is not pumping between waves, with many falls/restarts. Advanced rider has medium motor reliance and will link some waves by pumping, with minimal falls/restarts.

Compatible With:

• Foil Drive Fusion (with FM+ Battery Adaptor)
• Foil Drive MAX+
• FM+ Battery Adaptor
• 43V Standard Charger
• Foil Drive Battery Caddy (with FM+ Battery Adaptor)
• Not Compatible with Gen 2 MAX Unit.