The IP67 LiFePO4 marine battery system is engineered for electric propulsion, hybrid vessel power, onboard auxiliary loads and marine energy storage applications.
Combining lithium iron phosphate battery technology, an intelligent battery management system, multi-level electrical protection and a sealed IP67 enclosure, the system is designed to deliver stable energy in marine environments exposed to humidity, salt-laden air, vibration, shock and changing operating loads.
The modular battery architecture can be configured according to the vessel’s required voltage, usable energy, propulsion power, charging method, installation space and operating profile. It is suitable for new electric vessel projects as well as diesel-to-electric and hybrid vessel conversions.
Compared with a standard industrial battery pack, a marine battery system must be designed as part of the complete onboard electrical architecture. We therefore support battery selection, system voltage matching, charging configuration, communication protocol integration, cooling design and installation planning for shipyards, boat builders, marine system integrators and fleet operators.
Key Advantages
IP67 Protection for Marine Environments
The battery enclosure adopts an IP67 protection design to help isolate internal battery components from dust and water ingress under the applicable test conditions.
Sealed structural interfaces, protected communication ports and marine-suitable electrical connections help improve reliability in battery compartments where moisture, condensation and salt-containing air may be present.
The IP67 design makes the battery system suitable for demanding vessel installation environments, but the complete installation should still include appropriate drainage, ventilation, cable protection and mechanical fixing.
LiFePO4 Battery Chemistry
The system uses lithium iron phosphate cells selected for stationary and propulsion energy storage.
LiFePO4 chemistry supports:
- Stable charge and discharge performance
- High cycle durability
- Good thermal stability
- High usable battery capacity
- Low routine maintenance
- Reduced battery weight compared with conventional lead-acid banks
- Efficient charging from shore power, generators or renewable energy
- Modular expansion for larger marine energy systems
Cell model, nominal capacity, cycle-life conditions and cell manufacturer can be selected according to project requirements.
Smart Marine Energy Management
The integrated battery management system continuously monitors battery status and coordinates energy flow between the battery, propulsion inverter, charger, generator, solar controller and onboard loads.
Depending on the system configuration, the BMS can monitor:
- Individual cell voltage
- Total pack voltage
- Charging current
- Discharging current
- Cell temperature
- Pack temperature
- State of charge
- State of health
- Cell consistency
- Insulation status
- Contactor status
- Cooling system status
- Alarm and fault conditions
Through CAN, RS485 or a project-specific communication protocol, operating information can be transmitted to the vessel energy management system, propulsion controller or monitoring display.
This allows operators to view available energy, charging status, battery temperature and warning information from a centralized interface.
Flexible Marine Recharging Options
The battery system can receive energy from multiple onboard and shore-side sources.
Shore Power Charging
The vessel can be connected to an AC charging source while docked. The onboard charger or bidirectional inverter converts shore power into controlled DC charging power for the battery system.
Charging voltage, frequency, connector type and power level can be configured according to the destination market and port infrastructure.
Generator Charging
In a hybrid propulsion system, a diesel or alternative-fuel generator can recharge the battery during operation or when the state of charge reaches a defined threshold.
The energy management system can control generator start and stop logic according to propulsion demand, hotel load and remaining battery capacity.
Solar Charging
Solar panels installed on the vessel can provide supplemental energy through a compatible MPPT controller.
Solar charging can help support navigation electronics, lighting, refrigeration, communication equipment and hotel loads while reducing generator operating time.
Regenerative Energy Recovery
Where supported by the propulsion architecture, energy recovered during deceleration, sailing or specific operating conditions may be directed back to the battery system.
Actual regenerative capability depends on the propulsion motor, inverter and vessel control strategy.
High-Current Electrical Connection Design
Marine propulsion systems require stable power transmission under high continuous and peak loads.
The internal power distribution structure can use high-conductivity copper busbars, insulated connectors and protected high-voltage interfaces to reduce unnecessary connection resistance.
Key design considerations include:
- Adequate busbar cross-section
- Low-resistance electrical joints
- Controlled tightening torque
- Anti-loosening connection structure
- Insulated terminal protection
- Touch-safe high-voltage interfaces
- Pre-charge circuit
- Main fuse coordination
- Service disconnect
- Emergency isolation
- Clearly identified positive and negative circuits
The external cable size should be calculated according to current, cable length, voltage drop, installation temperature and marine cable requirements.
Suitable Vessel Applications
Electric Passenger Ferries
The system can support frequent charging and repeated daily sailing cycles for short-distance passenger transport.
Electric and Hybrid Workboats
Configurable discharge power supports propulsion, deck equipment, pumps, communication devices and auxiliary loads.
Sailing Yachts and Catamarans
The battery can supply propulsion assistance, lighting, refrigeration, navigation, air conditioning and other onboard hotel loads.
Patrol and Inspection Vessels
Fast response and reliable onboard power support propulsion, surveillance, radar and communication equipment.
Port Service Boats
The system can be configured for tug support vessels, pilot boats, harbor patrol boats and maintenance craft.
Fishing and Aquaculture Vessels
Marine batteries can power propulsion assistance, refrigeration, lighting, pumps and onboard working equipment.
Unmanned Surface Vessels
Smart BMS communication and remote monitoring support autonomous survey, inspection and environmental monitoring platforms.
Hybrid Marine Battery System
For hybrid vessels, the battery works together with a generator or conventional engine system.
The battery can:
- Support propulsion during low-load operation
- Supply short-term peak power
- Reduce generator idling
- Support silent operation in port
- Power onboard hotel loads
- Store surplus generator energy
- Reduce inefficient low-load generator operation
- Provide emergency backup power
The actual fuel-saving effect depends on the vessel’s operating profile and hybrid control strategy.
System Design Support for Marine Projects
The battery should not be selected solely by comparing nominal kilowatt-hours.
Our engineering team evaluates the complete vessel operating profile, including:
- Vessel type
- Newbuild or retrofit project
- Propulsion motor power
- Continuous cruising power
- Peak power requirement
- Desired operating time
- Daily sailing cycles
- Auxiliary load
- Required reserve capacity
- Available battery space
- Weight distribution
- Shore charging capacity
- Required charging time
- Generator configuration
- Cooling conditions
- Communication protocol
- Certification requirements
Based on this information, we can recommend the battery voltage, capacity, module quantity, charging power and cooling structure.
OEM and Customized Marine Battery Systems
Customization support is available for shipyards, marine equipment distributors, propulsion manufacturers and system integrators.
Available services can include:
- Customized system voltage
- Customized battery capacity
- Battery enclosure development
- Battery cabinet design
- Liquid-cooling system design
- BMS parameter configuration
- CAN protocol development
- Inverter communication matching
- Power cable and connector selection
- Fire detection integration
- Shore-charging interface matching
- Custom display interface
- Brand labeling
- Packaging and export documentation
- Prototype development
- Small-batch project validation
- Bulk production supply
Why Choose Us？
Integrated Battery Management
The BMS coordinates cell protection, charging limits, power output, thermal management and communication with vessel equipment.
Integration Support
Communication matching, cooling design, charging selection and propulsion-system coordination are available for project buyers.
Designed Around the Vessel
Battery voltage, energy, discharge power and charging capacity are selected according to actual vessel data rather than offered as a fixed generic package.
IP67 Marine Enclosure
The sealed enclosure helps improve resistance to water and dust ingress in demanding onboard installations.
Request an IP67 Marine Battery System Proposal
Looking for an IP67 LiFePO4 marine battery system for an electric boat, hybrid vessel or onboard energy storage project?
Send us the vessel operating profile, motor power, system voltage, required sailing time, charging conditions and certification requirements.
Our engineering team will evaluate:
- Required battery capacity
- Continuous and peak discharge power
- Recommended system voltage
- Battery module quantity
- Charging power
- Cooling method
- BMS communication
- Installation arrangement
- Fire protection requirements
- Certification direction
Contact us for a project-specific marine battery configuration and quotation.
