Stand-up paddle board battery FM+ 650

43 Vlithiumion

Overview
The FM+ 650 Battery is a one-piece lithium-ion pack engineered for Foil Drive Fusion and MAX+ platforms. With 648 Wh capacity and a 43.2 V nominal architecture it provides consistent thrust and endurance for extended e-foil sessions, upwind/downwind runs, wake riding and flatwater starts. The unit includes an integrated nose cone and marine-grade sealing for high water and dust resistance.

Key Features

• 648 Wh rated capacity in a compact, integrated one-piece molded battery and nose cone design.
• 43.2 V nominal architecture (max 50.4 V) for stable power delivery across the discharge curve.
• Bluetooth BMS communicating battery name, health, and State of Charge to the V3 Controller and Foil Drive App.
• Internal thermal management to maintain consistent performance throughout discharge.
• Compatible across Fusion and MAX+ platforms (Fusion requires FM+ Battery Adaptor).
• Marine-capable design with high water and dust resistance (IP68 / IP69 where specified).

Charging & Storage
The FM+ 650 requires a 43 V charger (standard). Typical full charge time is approximately 85 minutes. The battery supports a storage mode to limit charge for long-term storage; recommended storage State of Charge is 30%–60%. Follow charger and storage instructions in the product manual.

Battery Shipping Note
In accordance with international transport regulations, Foil Drive batteries are shipped at less than 30% State of Charge. Batteries may arrive at low charge and should be charged before first use.

What’s Included

• FM+ 650 Battery
• FM+ 650 Battery Carry Case

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

Technical specifications

• Rated Capacity (Watt hours): 648 Wh
• 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: L 460 × W 125 × H 55 mm
• Dimensions Installed: L 540 × W 125 × H 55 mm (installed with MAX+); 658 × 125 × 55 mm (installed with Fusion)
• Nose Cone: Integrated (not required separately)
• Battery Type: Lithium-Ion
• Water & Dust Rating: IP69 (high water and dust resistance)
• Certifications: UN38.3, CE, FCC, WEEE, RoHS, PSE, IP68, IP69
• Indicative runtimes (variable by rider weight, skill, conditions): E-foil Intermediate ~29 mins; E-foil Advanced ~48 mins; Surf Intermediate ~40–50 mins; Surf Advanced ~55–70 mins
• Runtime notes: Actual runtime varies with rider skill, weight, gear sizing and conditions; values provided are indicative averages.