Modular Electric Propulsion for Foil-Board Manufacturers.
Your board. Your brand. Our electric platform.
Plug-and-Play Power for Your WingFoil.
One platform. Multiple power levels.
One board. Wind or electric power.
Engineering for Electric Foiling
Electric propulsion is easy to specify. Making it survive, perform, and remain serviceable on the water is the real engineering challenge.
Designed for continuous exposure to salt water.
- sealing
- connectors
- enclosure
- corrosion resistance
- pressure & leak testing
Designed around battery lifecycle, not just capacity.
- BMS integration
- SOH monitoring
- cycle logging
- cell protection
- thermal management
Stable propulsion across different riding conditions.
- high-torque motor
- ESC parameter tuning
- power management
- thermal behavior
Modular components. Replace what fails.
- compatible with batteries and ESCs
- standardized interfaces
- quick-swappable modules
- reduce warranty and service overhead for manufacturers
Technical Questions
How does battery State of Health affect system performance?▼
- Products such as eVTOLs, electric motorcycles, and eFoils often require sustained high-power output—typically in the 3–5C range—to deliver the power needed for takeoff, launch, or high-performance operation.
- As a chemical energy storage system, a battery is highly sensitive to high-power operating conditions. Under sustained high-power loads, cell-to-cell performance consistency can progressively deteriorate, resulting in a reduction in the battery pack’s usable capacity. This is essentially the “weakest-cell” or “bucket effect”: the overall pack is ultimately limited by its weakest-performing cells.
- During charging, the highest-performing cell may reach its maximum voltage first. The BMS must then stop or limit charging to protect that cell, even though other cells in the pack may not yet be fully charged.
- During discharge, the weakest-performing cell may reach its minimum allowable voltage first. The BMS must then stop or limit further discharge, even though other cells still have usable capacity remaining.
- As cell-to-cell consistency deteriorates, the gap between the best and worst cells becomes larger. The result is a gradual reduction in usable pack capacity, available power, and system operating range.
- Importantly, SOC (State of Charge) alone cannot describe the actual capacity of a battery or reliably predict its remaining cycle life. A battery can report 100% SOC while its actual available capacity and long-term health have already significantly declined.
- SOH is therefore a more meaningful indicator of the battery’s actual condition, remaining usable capacity, and long-term performance.
How is battery health monitored?▼
- Under EU Regulation 2023/1542, specific requirements are established for battery electrochemical performance and durability, information disclosure, and related data updates, as outlined in Annex III, Annex IV, and Annex VII.
- During the regulatory transition period, AltusFoils provides Battery IQ, an independent SOH diagnostic tool designed to help users assess battery health and access relevant battery information.
- In the longer term, AltusFoils plans to offer Battery IQ Core, an integrated SOH monitoring solution designed to provide users with real-time battery health information and support the information disclosure requirements of EU Regulation 2023/1542.
- Battery IQ and Battery IQ Core are developed by CertmapSys Tech Ltd., the parent company of AltusFoils.
What are the key engineering challenges of electric foiling?▼
- Less water-related failure
- Longer service life
- Repeatable production quality
- Lower replacement cost
- Easier platform integration
- Predictive maintenance / battery lifecycle
- Lower warranty/service cost
How do we design for waterproofing and corrosion resistance?▼
- Electric foiling exposes electronics to salt water, humidity, pressure changes, and thermal cycling.
- We address these challenges at the system level through marine-grade materials, salt-water-resistant sealing,
- IP68-rated connectors, sealed enclosure structures, ESC thermal management, internal leak detection, and pressure-relief provisions.
- The objective is not simply to keep water out, but to manage water ingress, corrosion, heat, and internal pressure throughout the system lifecycle.