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.
Engineering & Design Capabilities
Advanced power solutions built for extreme environments and critical applications.
Core Technology
- Versatile Chemistry: Supports primary Li-SOCl₂, Alkaline, and rechargeable Li-ion tailored to specific voltage & thermal needs.
- Smart BMS: Custom multi-level protection (Over-charge/discharge, current, short-circuit, thermal) with active balancing.
- Telemetry: Real-time monitoring of voltage, current, and temperature.
Rugged & Sealed
- Hermetic Sealing: Vacuum potting & marine-grade O-rings protect against corrosion and moisture.
- 6000m Depth Rated: Housings in Delrin, Aluminum, SS, or Titanium.
- Extreme Durability: MIL-STD 810G shock/vibration tested and IP67/IP68 certified.
Build & Components
- Advanced Components: Flex PCBs and low-loss diodes for minimized weight and heat.
- Lean Manufacturing: ISO 9001 & API17F processes with full traceability.
- Agile Delivery: High-mix/low-volume production for rapid custom delivery.
Compliance & Life
- Global Certification: UL, CE, ATEX, IECEx, and UN/DOT 38.3 transport compliant.
- 25-Year Lifespan: API17F compliant subsea systems for long-term deployment.
- Modular Scale: Scalable packs (100+ cells) with integrated safety relief devices.
Applications
Reliable power solutions powering critical missions across subsea, oceanographic, and industrial sectors.
Subsea Monitoring
Delivering long-life power for environmental sensors, mooring control systems, telemetry beacons, and critical infrastructure monitors that demand years of uptime.
Vehicle Power
High-capacity energy packs designed for AUVs, gliders, and ROVs. Supporting propulsion, navigation units, gyrocompasses, and tethered systems.
Acoustic & Telemetry
Ultra-reliable batteries for acoustic release mechanisms, autonomous transponders, and deep-sea buoy systems requiring months of autonomous operation.
Inspection & Survey
Powering pipeline and riser inspection units, hydrographic instruments, and subsea mapping gear for O&G and scientific surveys.
Client Success Stories
Proven engineering solutions for critical subsea environments.
Ocean Bottom Node (OBN) Battery Project
The client faced critical failure risks due to water leakage in battery compartments under high hydrostatic pressure (700m depth), compromising expensive seismic data collection.
We engineered a dual-layer protection system. Beyond the standard cell assembly, we designed a bespoke vacuum-sealed enclosure and reinforced the OBN shell structure. This value-added service ensured zero leakage and reliable power delivery at operational depths.
Next-Gen Defense Underwater Power
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.
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
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.
ISO 9001
UL Certification
IEC Certification
CB Certification
European Union CE
FCC
Join the Deep-Sea Power Revolution
Are You Ready To Upgrade Your Underwater Energy System?
We engineer and test every underwater battery to perform flawlessly under extreme pressure and long-term ocean deployment. From deep-sea research to marine robotics, our custom battery packs combine durability, reliability, and intelligent management systems to keep your mission running safely and efficiently — where custom engineering meets deep-sea innovation.
