MARINE ENERGY STORAGE
Battery Pack
21 kWh
27 kWh
32 kWh
38 kWh
Marine grade energy storage
High capacity battery pack
LifePO4
The JOOOL Battery Pack is the energy reservoir of every JOOOL system : storing power from solar, shore, and generator for use in propulsion and hotel loads. Built around LiFePO4 chemistry for maximum safety and longevity, it is available in four capacities and designed for modular expansion as needs evolve.
FEATURE
Keys features
Safe and cobalt-free battery technology with no thermal runaway, ensuring reliable and eco-friendly marine energy storage
Built-in fire suppression system activating at 80°C for enhanced onboard safety beyond industry standards
Voltage Interlock Loop ensures secure operation with integrated hardware safety protection
Advanced Battery Management System providing real-time cell balancing, temperature, and health monitoring
Scalable battery architecture up to 152 kWh per module and adaptable to various yacht configurations
Zero maintenance required under normal operating conditions for long-term reliability
LIFEPO4
Why it is the right chemistry
LiFePO4 (Lithium Iron Phosphate) is the safest, most cycle-stable lithium chemistry available, and the only chemistry JOOOL uses. Unlike NMC or NCA batteries, LiFePO4 does not support thermal runaway. It is non-toxic, cobalt-free, and tolerates overcharge and elevated temperatures without risk of fire or explosion. For a battery bank installed inside a yacht hull : remote, inaccessible, and far from emergency services anywhere in the world, this is decisive.
GESTION
Reliable technology
Built with advanced engineering, our system offers extended lifecycle, high retention capacity, and optimized recyclability for a more sustainable future.
3,000-5,000 cycles
Outlast diesel engine
01
7 years guarantee
80% retained capacity
02
80% recyclable
screwed construction for end-of-life disassembly
03
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
POWER | DISTRIBUTION
Specifications
| 21 kW | 27 kW | 32 kW | 38 kW | |
|---|---|---|---|---|
|
Nominal energy (kWh)
|
21.5 kWh | 26.9 kWh | 32.3 kWh | 37.7 kWh |
|
Nominal voltage VDC
|
205 | 256 | 307 | 358 |
|
Weight (kg)
|
200 | 245 | 290 | 335 |
|
Length (mm)
|
760 | 885 | 1,030 | 1,165 |
|
Height × Width (mm)
|
770 × 275 | 770 × 275 | 770 × 275 | 770 × 275 |
|
Cooling
|
Air | Air | Air | Air |
|
|
|
|
QUESTIONS
Everything you want to know
Up to 4 Battery Packs in parallel per OneBox module, for a maximum of 152 kWh per module. With up to 3 OneBox modules running in parallel, total system storage can reach 456 kWh.
The EPMS monitors each pack continuously. If a pack falls below operating parameters, it is isolated automatically and the system continues operating on the remaining packs. JOOOL's worldwide service network handles replacement.
