• A Norwegian battery technology company, electrifying the maritime industry

About: Ocean Batteries AS

Ocean Batteries AS, formerly Hagal Ocean, is an innovator in the marine battery industry, dedicated to providing durable, reliable, and sustainable battery solutions.

With a renewed focus on its core business, Ocean Batteries AS embodies the values of integrity, safety, and dependability, ensuring customers can trust their batteries to perform flawlessly.

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Why choose Ocean Batteries

Lifetime Economics

Lifetime Economics

Ocean Batteries is an end-to-end supplier of battery solutions, taking responsibility to make sure the battery works in your application.We offer both sales and leasing of batteries.

With durable, high quality batteries we ensure a low cost per cycle.  At the end of the battery life, it is returned to Ocean Batteries and reused it in other applications to minimize the climate footprint. When the battery retires, all materials are sent to recycling.



Our battery design is best-in-class on safety and DNV certified for marine application such as workboats, aquaculture, fish farming, ferries and shipping.

Our battery system is built on LFP chemistry, known to be inherently more stable than comperable chemistries. It has built-in fire supression and is insulatet in a waterproof IP67 box.



Ocean Batteries industrial batteries are specifically designed for workboats and aquaculture. They are made with components of the right quality and built to take a beating during a long life at sea. We make sure our customers get a battery suited to their needs that gets the job done.



We have a strong partner ecosystem and supply chain, making sure Ocean Batteries has flexible capacity of delivery and short lead time.

Modular energy storage systems

Modular energy storage systems
Eoh 176 kWh

We deliver a new generation of cost-efficient, safe, high-performance battery solutions, tested and approved by DNV.

The Eoh series of modular energy storage systems is designed to meet the highest standards for emission free operations.

  • IP67 waterproof box
  • Flexible and modularised design
  • Passive single-cell thermal runaway protection
  • Scalable capacity according to vessel requirements
  • Industry-proven Battery Management System (BMS)
  • Remote monitoring capabilities
  • Based on the safest battery chemistry, LFP
  • Low installation and commissioning time
  • Designed for voltages up to 768 VDC
  • Low life cycle cost

Latest updates

Ocean Batteries AS Charting Independence Maritime Innovation
Why Marine is Tripling Down on Battery Power
A wave of batteries hits the aquaculture industry
CEO Øystein Kjæreng welcomes Nils Christian Aas to Hagal Ocean.
Hagal and Frydenbø join forces to solve climate headache
Hagal´s marine battery solutions win DNV GL Type approval
Hagal Ocean batteries power the maritime sector
Hagal will electrify the shipping industry with new battery technology