CENTRAL MODULE
OneBox
Energy & Propulsion
A unit that enables energy conversion and distribution for your boat.
DEFINITION
Heart of the energy-propulsion system
The OneBox is the central module of every JOOOL hybrid-electric system. It connects all energy sources : shore power, solar, generator, to battery storage and all onboard consumers, and coordinates every energy flow through the EPMS intelligence layer. Available in two configurations for different vessel profiles and use cases.
CONFIGURATONS
Two configurations:
one platform
The OneBox family shares the same core architecture, the same battery interface, the same EPMS software, and the same plug-and-play integration process. The difference lies in the propulsion layer.
OneBox Energy : energy management and silent mooring
The OneBox Propulsion adds integrated electric drive to the energy management platform. Connected to the PowerPod direct-drive motor, it replaces the diesel engine entirely, delivering silent, instant-torque propulsion in harbour and regenerating electricity from the propeller while sailing. The complete hybrid-electric sailing experience.
- For all vessel sizes: 40 to 120 ft
- Retains existing thermal propulsion: no engine replacement
- Silent hotel loads at anchor: lighting, refrigeration, AC, watermaker
- Automated generator management: starts and stops based on battery state
- Solar and shore power inputs optimised simultaneously
- Up to 150 kWh battery storage per unit : up to 3 units in parallel
| Specifications | Value |
|---|---|
|
Input battery capacity
|
1 x 21kWh to 4 × 38 kWh |
|
Input battery charger [kW]
|
up to 2x6kW |
|
230V AC output
|
up to 3 X 6kW with external inverter |
|
BI directional DC/DC [A]
|
2 x 50A (24V) |
|
Input generator Voltage [VAC]
|
415-480 |
|
Weight [kg]
|
50 |
|
Dimensions LxHxD [mm]
|
700x700x282 |
|
Cooling
|
Air |
OneBox Propulsion : integrated electric drive
The OneBox Energy manages all onboard power, battery storage, solar input, shore charging, and generator management, while the vessel retains its existing thermal propulsion. Hotel loads run silently from battery storage at anchor and in harbour. The EPMS manages generator cycling automatically, minimising runtime and fuel consumption.
- For sailing yachts: 40 to 65 ft (monohull and catamaran)
- PowerPod replaces diesel engine : silent, zero-emission propulsion
- Hydrogeneration: recovers 2–5 kWh per hour at hull speed while sailing
- Instant torque from zero RPM : superior marina manoeuvring
- Automatic mode switching: electric drive, hydrogeneration, hybrid
- Shore power, solar, generator, and hydro all managed by the EPMS
| Specifications | 25kW | AC | 25kW | DC | 35kW | DC | 50kW | DC |
|---|---|---|---|---|
|
Battery voltage [VDC]
|
160 - 496 | 160 - 496 | 2×160 - 460 | 2×160 - 460 |
|
Propulsion drive [A]
|
60 | 60 | 90 | 120 |
|
230V AC output
|
6kW | - | up to 2x6kW with external inverters | up to 2x6kW with external inverters |
|
BI directional DC/DC [A]
|
50A (12V) | 50A (12V/24V opt) | 50A (24V) | 50A (24V) |
|
Genset input [VAC]
|
415–480 | 415–480 | 415–480 | 415–480 |
|
Weight [kg]
|
60 | 40 | 55 | 55 |
|
Dimensions LxHxD [mm]
|
680×700×280 | 680×430×280 | 700×700×280 | 700×700×280 |
|
Cooling
|
Air | Air | Air | Air |
FEATURE
Keys features
pre-wired and factory-tested before delivery : minimal on-site work
up to 3 units in parallel for high-capacity installations
EPMS integrated all energy flows managed automatically, no crew intervention
CAN 2.0A communication real-time data exchange with all system modules
B&G display compatible energy data on existing navigation displays
Remote over-the-air updates EPMS software improved continuously
HVIL + IMD safety systems standard on every unit
IP68 industrial-grade connectors throughout
No specialist high-voltage certification required on-site for installation
READY-TO-USE
Plug & Play integration
Battery Pack
A unit that enables energy conversion and distribution
for your boat.
Learn more
OneBox
A unit that enables energy conversion and distribution
for your boat.
Learn more
Electric Drive
Electric motor for reliable, silent,
and sustainable propulsion.
Learn more
Throttle
Precision control for electric & hybrid propulsion systems.
Learn more
EPMS
An intelligent onboard computer
to optimize energy management.
Learn more
Battery Pack
A unit that enables energy conversion and distribution
for your boat.
Learn more
OneBox
A unit that enables energy conversion and distribution
for your boat.
Learn more
PowerPod
Electric motor for reliable, silent,
and sustainable propulsion.
Learn more
Throttle
Precision control for electric & hybrid propulsion systems.
Learn more
EPMS
An intelligent onboard computer
to optimize energy management.
Learn more
COMPATIBILITY
Compatible with
QUESTIONS
Everything you want to know
Yes. The battery packs, EPMS, and installation architecture are shared across both configurations. Upgrading involves replacing the OneBox module and adding the PowerPod, the electrical infrastructure already in place is compatible. JOOOL's engineering team can advise on the upgrade pathway for each vessel.
Up to three OneBox units can run in parallel on the same vessel, for total battery storage up to 456 kWh and combined AC output up to 18 kW. For the Propulsion configuration on a catamaran, two OneBox Propulsion units drive two PowerPods independently.
