A brand page for selecting an electric or hybrid drive, EPM motor, PDU, LiFePO4 batteries, charging and NMEA2000 monitoring — from first assessment to configuration inquiry.
Electric or hybrid
The STOK approach links motor, batteries, PDU, DC/DC, chargers and control interface into one system for recreational and commercial vessels.
For vessels targeting quiet cruising, lower service load, clean energy and precise battery-capacity planning.
For longer range, professional routes and vessels that need electric operation with diesel backup or a generator.
For ferries, workboats, inspection vessels and fleets looking for uptime, lower operating costs and planned electrification.
System components
Direct drive without gearbox, with integrated electronics and range up to 200 kW.
Scalable LiFePO4 modules for safe, long-life and modular energy storage.
Central DC hub for protection, communication and energy distribution between key components.
Links 12V/24V service systems with the high-voltage propulsion network.
Marine charging from shore power to faster commercial turnaround scenarios.
Throttle, button panel and NMEA2000 display for battery status, power and range.
EPM motor range
The models are shown as a guide for discussing power, voltage, engine-room space and cruising profile.
Compact boats, tenders, sailboats and refits where space, weight and simple installation matter most.
A common mid range for motorboats, day trips, charter and more demanding family cruising.
Larger vessels, commercial use and profiles where continuous duty and charging are part of the business plan.
Energy and safety
Planning covers protection, pre-charge, insulation monitoring, CAN diagnostics and compatibility with batteries, chargers and converters.
| Specs | PDU 500 | PDU 800 |
|---|---|---|
| Maximum voltage | 500 V | 800 V |
| Current | 300 A | 300 A |
| Charge | 60 A | 60 A |
| IP rating | IP65 | IP65 |
| Insulation monitor | Yes | Yes |
| Precharge | Yes | Yes |
| Battery compatibility | Super B / MG / Custom | Super B / MG / Custom |
LiFePO4 batteries
Configuration flow
Hull, weight, current propulsion, shaft, consumption, space and cruising conditions.
Electric, serial hybrid or parallel hybrid based on the real usage pattern.
Motor, voltage, battery bank, PDU, chargers and DC/DC are configured as one system.
Cable, cooling, control, display and long-term service-support planning.
Applications
Quiet marina approaches, lower vibration and easier everyday operation.
Clean propulsion for short routes, tourism and sensitive boating areas.
Planned autonomy, fast charging and lower service costs for repeated routes.
FAQ
Yes, retrofit is a core scenario. Shaft, motor bed, battery space, cabling and real cruising profile are checked.
Hybrid makes sense when more range, backup power or a professional schedule needs a generator or diesel engine to support the battery.
The system uses a throttle, physical panel and NMEA2000 display for battery state, power, range, alarms and propulsion information.
Send vessel type, length, weight, current engine and transmission, cruising speed, target range, available charging and engine-room photos.
Configuration inquiry
The most useful details are vessel length and weight, current engine/transmission, use case, cruising speed, target range, available charging and battery space.
