Kraken Robotics System / Package
SeaPower subsea batteries
Pressure-tolerant subsea lithium-ion batteries with polymer encapsulation and integrated BMS, scalable from 1.8 kWh to 5 MWh and pressure tested to 660 bar.
Description
SeaPower is Kraken's subsea lithium-ion battery. A proprietary polymer matrix provides pressure-tolerant encapsulation, eliminating the need for pressure housings or oil compensation, and each battery has an integrated Battery Management System. Kraken states that SeaPower delivers 200% greater energy density and 46% less weight per kWh than oil-compensated or pressure-housed subsea batteries. A battery manufacturing facility in Halifax has operated since Q1 2026.
Key features
- Customizable, scalable modules from 1.8 kWh to 5 MWh, for small vehicles up to XLUUVs
- Pressure tested to full depth: up to 660 bar, equivalent to 6000 m ocean depth
- Complies with U.S. Navy and maritime safety and transportation standards
- Shipped in fireproof cases
- Supporting equipment: high-speed chargers, power management units and dischargers
Applications
Power for UUVs and subsea energy storage; for one client, SeaPower increased UUV endurance from 40 hours to more than 100 hours.
Specifications
| Energy range | 1.8 kWh to 5 MWh |
|---|---|
| Pressure test | up to 660 bar (equivalent to 6000 m ocean depth) |
| Energy density vs conventional | 200% greater |
| Weight per kWh vs conventional | 46% less |
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