Foil Drive • Assist MAX Battery • High Power • 396Wh
Foil Drive MAX Sport High Power 396 Battery
SKU: FD286
A unique balance of weight, runtime, and responsive board feel for Foil Drive Assist MAX riders.
The Foil Drive MAX Sport High Power 396 Battery is built for riders who want more capacity than the original MAX Sport Battery while keeping their Assist MAX setup lighter, more responsive, and easier to pump. With 396Wh of capacity, high-power battery technology, and a compact battery format, this is a strong choice for surf, wing, parawing, downwind, and light-assist focused sessions where board feel matters.
- 396Wh Capacity
- 10Ah Rated Capacity
- High Power Battery Technology
- 1.85kg / 4lb Battery Weight
- 20% More Capacity than Original MAX Sport
- Assist MAX Compatible
Why You’ll Love the MAX Sport High Power 396
More Runtime Without Going Full Size
The MAX Sport High Power 396 Battery gives you 396Wh of capacity, adding meaningful session time compared to the original MAX Sport Battery while staying smaller and lighter than the largest MAX battery options.
Lighter, More Responsive Board Feel
The smaller battery format reduces mass and swing weight in the front of the unit, helping your board feel easier to turn, pump, redirect, and unweight through transitions and wave sections.
Great for Assist-Focused Riding
This battery is ideal for riders who use Foil Drive as an assist tool instead of full-time eFoiling power. It keeps the setup compact and responsive while still giving useful runtime for real sessions.
High Power Battery Technology
Advanced high-power battery construction helps deliver responsive performance from your Assist MAX setup, making the system feel lively underfoot during takeoffs, pumps, and recoveries.
Performance Feel
More Natural Through Turns
Less front-end weight helps the board respond more naturally through turns, making the setup feel easier to roll, redirect, and link from one section to the next.
Easier Takeoffs
The lighter, more compact battery format helps the board feel easier to lift onto foil, especially when paired with efficient pumping and smart motor use.
Better Pumpability
Reduced swing weight makes pumping between sections feel more efficient, which is especially useful for surf foiling, downwinding, winging, and parawinging.
Compact MAX Setup Feel
For riders who want the capacity of a larger Assist MAX system but prefer a more agile feel, the 396 Battery hits a useful middle ground between runtime and handling.
Ideal For
Surf & Pump Sessions
A lighter, more responsive battery feel makes the 396 a strong option for surf sessions where board control, pumping, and connecting waves matter more than maximum eFoil-style runtime.
Wing & Parawing Assist
The compact format is easier to manage for winging and parawinging, where the motor is often used for starts, recoveries, or getting into position rather than constant throttle use.
Downwinding
For downwind riders, lower weight and better pumpability can make a big difference. The MAX Sport High Power 396 keeps the setup lively while still adding useful assist capacity.
Lighter Riders & Responsive Setups
Riders who do not need the biggest MAX battery capacity can use the 396 to keep the board more balanced, compact, and performance focused.
Runtime / Autonomy Feedback
| Use Type | Estimated Session Time | Notes |
|---|---|---|
| Efoiling | Not recommended | Foil Drive lists this battery as not recommended for eFoiling due to short runtime. |
| Assist: Heavy Motor Usage | 25–40 minute session | For riders relying on the motor more frequently during the session. |
| Assist: Light Motor Usage | 30–55 minute session | For efficient riders using the motor mainly for starts, recoveries, positioning, or short assists. |
Runtime note: Battery runtime varies based on rider weight, ability, motor usage, board and foil selection, conditions, riding style, battery age, and temperature.
Tech Specs
| Spec | Foil Drive MAX Sport High Power 396 Battery |
|---|---|
| Rated Capacity | 10Ah / 396Wh |
| Voltage | 40V |
| Nominal Voltage | 39.6V |
| Max Voltage | 46.2V |
| Battery Weight | 1.85kg / 4lb |
| Energy Density | 214Wh/kg |
| Battery Dimensions | 290 x 75 x 40 |
Capacity Comparison
| Battery | Capacity | Positioning |
|---|---|---|
| MAX Sport | 332.64Wh | Original smaller Sport capacity option. |
| MAX Travel | 356.6Wh | Travel-focused MAX battery option. |
| MAX Sport High Power 396 | 396Wh | More capacity than the original MAX Sport and MAX Travel, while keeping a compact ride feel. |
| MAX Power Battery | 498.69Wh | Discontinued higher-capacity MAX option. |
| MAX High Power | 594Wh | Largest listed MAX High Power capacity option. |
Upgrade note: The MAX Sport High Power 396 Battery has 20% more capacity than the original MAX Sport Battery.
Compatibility
Compatible With
- Foil Drive Assist MAX
- Foil Drive 40V Fast Charger
- Foil Drive 40V Standard Charger
- Nose Cone B — smaller nose cone provided in your kit
Best Setup Match
This battery is best matched to Assist MAX riders who want a compact, responsive setup with more capacity than the original MAX Sport Battery, but do not need the extra size and weight of the largest MAX battery option.
Who Is the MAX Sport High Power 396 Battery For?
Best Rider Profiles
- Assist MAX riders who want more runtime than the original MAX Sport Battery
- Surf foilers who care about board feel and responsiveness
- Downwind riders who want better pumpability and less swing weight
- Wing and parawing riders who prefer a compact, manageable Foil Drive setup
- Lighter riders who do not need the largest MAX battery capacity
- Riders focused on light-assist use rather than full eFoil-style motor usage
What You’ll Notice on the Water
- A more lively board feel compared to larger, heavier battery setups
- Easier pumping between sections
- More responsive turning and redirection
- Useful runtime increase compared to the original MAX Sport Battery
- Compact, lower-drag Assist MAX setup feel
- Better balance for surf, wing, parawing, and downwind sessions
What’s Included
Included with the Battery
- 1x Foil Drive MAX Sport High Power 396 Battery
- 1x Battery Cover
Not Included
- Foil Drive Assist MAX unit
- Motor
- Foil Drive charger
- Foil board or hydrofoil
- Nose cone unless stated separately
- Other accessories unless stated separately
Foil Drive MAX Sport High Power 396 Battery FAQ
How much capacity does the MAX Sport High Power 396 Battery have?
The battery has a rated capacity of 10Ah / 396Wh. It has 20% more capacity than the original MAX Sport Battery.
Is this battery good for eFoiling?
Foil Drive lists this battery as not recommended for eFoiling due to short runtime. It is better suited to assist-focused riding where the motor is used strategically rather than constantly.
What runtime should I expect?
Foil Drive lists 25–40 minutes for heavy assist motor usage and 30–55 minutes for light assist motor usage. Actual runtime varies based on rider weight, conditions, foil setup, riding style, motor usage, battery age, and temperature.
Which Foil Drive system is it compatible with?
The MAX Sport High Power 396 Battery is compatible with the Foil Drive Assist MAX system and works with Foil Drive 40V Fast and Standard Chargers.
Why choose this instead of the largest MAX battery?
Choose the 396 if you want a lighter, more responsive setup with useful capacity for assist riding. Larger batteries can offer more capacity, but they also add more size and weight.
Is this a good battery for downwinding?
Yes. The compact size, lower weight, and better pumpability make it a strong choice for downwind riders who want assist without making the board feel heavy or sluggish.
Why Choose the MAX Sport High Power 396?
The Foil Drive MAX Sport High Power 396 Battery is one of the best ways to make an existing Assist MAX kit feel more lively, efficient, and performance focused. It gives riders a practical balance of capacity, weight, and responsiveness for surf, wing, parawing, downwind, and light-assist sessions.