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Custom Underwater Lithium Battery Packs for Oceanographic Systems
Reliable power solutions engineered for deep-sea exploration, subsea monitoring, and marine research equipment.
KRL develops high-performance underwater lithium battery packs designed specifically for oceanographic instruments and subsea equipment operating in extreme marine environments.
Our engineering team specializes in custom battery solutions that provide stable power for deep-sea systems such as remotely operated vehicles (ROVs), underwater sensors, and long-duration ocean monitoring devices.
With advanced sealing technologies, pressure-resistant structures, and high energy-density lithium cells, KRL battery systems ensure reliable performance even under high pressure and long deployment cycles.
What Are Oceanographic Battery Systems?
Oceanographic battery systems are specialized energy storage solutions designed to power underwater scientific instruments and marine exploration equipment.
Unlike conventional battery packs, underwater batteries must operate reliably in extreme marine conditions including high pressure, low temperatures, and long deployment cycles without maintenance.
These battery systems are commonly used in:
- Oceanographic monitoring instruments
- Subsea data collection systems
- Autonomous underwater vehicles (AUVs)
- Remotely operated vehicles (ROVs)
- Deep-sea environmental sensors
To ensure reliability, underwater battery systems require advanced sealing structures, corrosion-resistant materials, and stable lithium battery technologies capable of delivering long-term power underwater.
Solving Critical Pain Points in the Cobot Industry
Deep-Sea Engineering Experience
KRL engineers design battery systems specifically for underwater applications, considering pressure resistance, corrosion protection, and long-term energy stability.
Custom Battery Development
KRL engineers design battery systems specifically for underwater applications, considering pressure resistance, corrosion protection, and long-term energy stability.
High Energy Density Lithium Technology
Our lithium battery systems provide extended runtime while maintaining compact size, making them ideal for space-limited underwater equipment.
Proven Safety Performance
KRL batteries undergo extensive safety validation including mechanical impact, crush resistance, thermal stability, and cycling tests to ensure reliable performance in demanding conditions.
Engineering & Design Capabilities for Underwater Battery Systems
KRL provides end-to-end battery engineering support for oceanographic equipment manufacturers.
Lithium Battery Technology
- High energy density lithium cells
- Stable cycle life performance
- Optimized battery management systems
Pressure-Resistant Battery Structures
- Reinforced enclosure designs
- High sealing performance
- Anti-corrosion materials for marine environments
Battery Pack Integration
- Custom electrical interfaces
- Connector and communication integration
- Mechanical compatibility with subsea equipment
Compliance and Reliability Testing
- Environmental testing
- Safety validation
- Performance verification for underwater deployment
Client Success Stories
Oceanographic Battery Project Case Studies
Ocean Bottom Node (OBN) Battery Project
- High-Precision Seafloor Seismic Technology
KRL developed a custom lithium battery pack for an ocean bottom node system used in subsea seismic monitoring.
The project required high energy density, long deployment duration, and stable performance under deep-sea pressure conditions. The customized battery system successfully delivered reliable power for extended subsea operations.
Next-Generation Underwater Power System
- Defense & Security (UUVs, Beacons)
The defense client required significantly higher energy density and extended cycle life for underwater vehicles and beacons, but was strictly limited by a compact battery footprint.
We implemented cutting-edge Semi-Solid State Technology. This innovation maximized energy density within the restricted space while enhancing safety. The final design successfully passed 18 rigorous safety tests required for military-grade deployment.
Underwater Battery Performance Verification
To ensure stable operation in marine environments, KRL battery systems undergo comprehensive performance validation including long-term cycling tests and environmental stress evaluations. Our internal testing demonstrates stable capacity retention and consistent energy output over extended operational cycles.
| Battery Product ID | Charging Temp | Discharge Temp | Charge Current | Discharge Current | Energy Density | Cycle Life |
|---|---|---|---|---|---|---|
| Underwater vehicle batteries： 63110122HST-13.3Ah-3.6V | -2~45℃ | -2~45℃ | 0.5C | 3C | ≥274Wh/kg | 500 cycle retention rate ≥80% |
| Navigator Battery： 7389164HST-16.6Ah-3.6V | -2~45℃ | -2~45℃ | 0.5C | 3C | ≥264Wh/kg | 500 cycle retention rate ≥80% |
| Three-dimensional sonar battery： 5564145HST-7500mAh-3.6V | -2~45℃ | -2~45℃ | 0.5C | 3C | ≥267Wh/kg | 500 cycle retention rate ≥80% |
| Controller Battery： 6242111HST-3600mAh-3.6V | -2~45℃ | -2~45℃ | 0.5C | 3C | ≥259Wh/kg | 500 cycle retention rate ≥80% |
| Beacon Battery： 293282HST-900mAh-3.6V | -2~45℃ | -2~45℃ | 0.5C | 3C | ≥217Wh/kg | 500 cycle retention rate ≥80% |
| Hand-side auxiliary thruster battery： 8484160HST-17.5Ah-3.6V | -2~45℃ | -2~45℃ | 0.5C | 3C | ≥264Wh/kg | 500 cycle retention rate ≥80% |
| Leg Side Assist Thruster Battery: 6888188HST-16.4Ah-3.6V | -2~45℃ | -2~45℃ | 0.5C | 4C | ≥265Wh/kg | 500 cycle retention rate ≥80% |
Custom Underwater Battery Packs for Oceanographic Systems
Our custom battery systems are engineered specifically for marine and underwater equipment. Drawing on decades of experience, we deliver high-reliability AUV batteries, underwater batteries, sea-water battery packs, and ocean battery systems for extended field deployments. Each solution is built to withstand deep-sea conditions — rugged pressure housings, robust connectors and high-capacity cells ensure years of service without maintenance. We specialize in large-format cylindrical packs (even up to 10 ft long) assembled on custom tooling, so we can meet virtually any size or form-factor requirement.
Cycling Test：
All seven types of batteries adopt the same system, the cycle test takes 8484160HST as an example, the capacity retention rate reaches more than 95% in 300 cycles.
Safety Performance Test - Needle Punch Test
Safety Performance Test- Heavy impact test
Safety Performance Test - Crush test
Safety Performance Test - Thermal Shock Test
Applications for Underwater Lithium Battery Systems
ROV and AUV Systems
Provide stable power for underwater robotic exploration platforms.
Oceanographic Monitoring Devices
Support long-term data collection in marine research projects.
Subsea Sensors and Data Loggers
Ensure reliable energy supply for environmental monitoring systems.
Deep-Sea Survey Equipment
Power advanced instruments used for seabed mapping and geological studies.
Lifecycle Support & Services
We provide end-to-end engineering support and after-sales service for our battery systems. Services include initial design reviews, prototype testing, and full-production manufacturing. We offer refurbishment and rebuild programs to extend pack lifecycles, along with spares provisioning. Our global support team helps integrate the batteries into customer platforms, from concept through deployment. Every project benefits from our technical expertise and quality rigor, ensuring the battery pack delivers the required energy and reliability throughout its service life.
