51.2V 400Ah E-Marine LiFePO4 Battery
Nominal Voltage: 51.2V
Nominal Capacity: 400Ah
Rated Energy: 20,480Wh (20.48kWh)
Maximum Charging Current: 400A
Continuous Discharge Current: 400A
Peak Discharge Current (30s): 480A
Protection Class: IP67
Reference Weight: About 30kg
Dimensions (W×D×H): (400 × 325 × 150) ±2mm
Communication Interface: CAN / RS485
TOPAK's High-Performance 51.2V 400Ah E-Marine LiFePO4 Battery
TOPAK New Energy Technology CO.,LTD is a leading manufacturer and supplier of cutting-edge 51.2V 400Ah E-Marine LiFePO4 Battery solutions. Our advanced batteries offer superior performance, longevity, and safety for marine applications. With TOPAK's expertise in lithium iron phosphate technology, you can power your vessels with confidence and efficiency.
Product Description
The TOPAK TP-A959 product is designed to meet the demanding needs of modern marine environments. This high-capacity battery provides reliable power for electric boats, yachts, and hybrid marine vessels. Its robust construction and advanced features make it an ideal choice for marine OEMs and energy system integrators.
Advantages
- Long cycle life (>3,000 cycles)
- High energy density for extended range
- Fast charging capability
- Excellent thermal stability
- Low self-discharge rate
- Maintenance-free operation
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | TP-A959 |
| Nominal Voltage | 51.2V |
| Nominal Capacity | 400Ah |
| Rated Energy | 20,480Wh (20.48kWh) |
| Max Charging Current | 400A |
| Continuous Discharge Current | 400A |
| Peak Discharge Current (30s) | 480A |
| Protection Class | IP67 |
| Weight | Approx. 30kg |
| Dimensions (W×D×H) | (400 × 325 × 150) ±2mm |
| Communication Interface | CAN / RS485 |
Product Highlights
- IP67 waterproof rating for marine environments
- Integrated BMS for optimal performance and safety
- CAN/RS485 communication for easy system integration
- Compact design for flexible installation
- Environmentally friendly and recyclable
Application Scenarios
- Electric boats and yachts
- Hybrid marine propulsion systems
- Offshore platforms
- Marine research equipment
- Coastal tourist vessels
- Eco-friendly ferries

Quality Assurance
Our 51.2V 400Ah E-Marine LiFePO4 Battery undergoes rigorous testing and meets international standards. TOPAK adheres to ISO9001:2015, ISO14001:2015, and ISO45001:2018 management systems, ensuring top-quality products for our customers.
OEM/ODM Services
TOPAK offers customized solutions to meet your specific marine energy storage needs. Our experienced R&D team can tailor battery specifications, casing designs, and integration features to suit your project requirements.

Solutions
We provide comprehensive energy storage solutions for various marine applications, including:
- Hybrid power systems for commercial vessels
- Solar-wind-battery systems for off-grid marine installations
- Modular battery banks for scalable energy storage
TOPAK Factory Production Process
At TOPAK, we maintain a state-of-the-art production facility equipped with over 100 advanced manufacturing devices. Our process includes automated cell matching, precision laser welding, and comprehensive protection board testing. This ensures each products meets our rigorous quality standards. Our ISO-certified processes guarantee consistency and reliability in every product we deliver.


Why Choose TOPAK?
- Industry-leading R&D capabilities
- Extensive marine application experience
- Global presence with local support
- Customization options for unique requirements
- Commitment to sustainability and innovation
FAQ
- Q: What is the lifespan of the products?
A: Our batteries are designed to last over 3,000 cycles, providing years of reliable service in marine environments. - Q: Is this battery compatible with existing marine charging systems?
A: Yes, the TP-A959 can be integrated with most marine charging systems. Our team can assist with compatibility assessments. - Q: How does the battery perform in saltwater environments?
A: With its IP67 rating, our battery is well-protected against saltwater ingress and corrosion, ensuring long-term reliability. - Q: Can multiple batteries be connected in parallel for higher capacity?
A: Absolutely. The TP-A959 is designed for easy parallel configuration to meet higher energy demands. - Q: What safety features does the battery have?
A: It includes an advanced BMS that protects against overcharging, over-discharging, short circuits, and thermal runaway. - Q: Do you offer warranty and after-sales support?
A: Yes, we provide a comprehensive warranty and global technical support to ensure your satisfaction and system reliability.
Contact Us
Ready to power your marine projects with TOPAK's 51.2V 400Ah E-Marine LiFePO4 Battery? Contact our expert team today for personalized solutions and quotes. Reach us at B2B@topakpower.com or visit our website for more information.



