SeaSafe Subsea Batteries
SWE SeaSafe® subsea battery modules deliver reliable, high-performance power in the harshest ocean environments—tested and proven to depths of 6,000 meters. Built for endurance, safety, and ease of use, they offer 4× longer run-time and 6× longer lifespan than sealed lead acid batteries, with 100% condition-based monitoring to keep missions running without interruption.
Built by Engineers, For Engineers
At Southwest Electronic Energy part of the global Ultralife Corporation, we lead in primary lithium and lithium-ion specialty batteries, as well as advanced battery management system (BMS) technology. Our proven expertise and innovative designs power mission-critical applications in the world’s most demanding environments.
Power Solutions for Underwater Vehicles and Subsea Equipment
SWE SeaSafe® Batteries are designed to withstand the harsh conditions of the seabed. They have been proven in a wide range of applications including AUV/UVs, MUVs, ROVs, Oil and Gas, and Oceanography.
Key Advantages
Higher Performance
- 4× longer mission run-time than sealed lead acid batteries
- 6× longer battery life for reduced replacements and lower lifecycle costs
- 100% condition-based monitoring for real-time health and performance insights
Lower Risk
- ABS Certified for marine safety compliance
- Tested to 6,000m ocean depth for extreme pressure tolerance
- Patented safety features with SWE’s advanced Battery Management System (BMS)
Ease of Use
- Choose the type you need – direct-in-water, in PBOF case, or in pressure vessel
- Direct-in-water boasts different connectors – 10 amp, low profile 20 amp, and 40 amp
- Modular building blocks – Connect batteries in series to increase voltage or in parallel to increase capacity and power
- Charges with standard power supply
Scalable Power for Any Mission
From compact single-module setups to large, high-voltage battery systems, SWE SeaSafe® technology is built to grow with your needs. All batteries are manufactured in SWE’s ISO 9001 certified facility in the USA and are UN 38.3 certified and safety tested. Available in 24V, 30V and 37V versions, there is a solution to meet your subsea battery needs – no matter the size or scope of your mission.
