Lübeck, Amsterdam, 16 June 2025 – TESVOLT OCEAN, manufacturer of high-performance battery storage solutions for inland and maritime shipping, is expanding its product portfolio. The German Norwegian company will be presenting its two new battery systems ‘Kaptein NMC Compass’ and ‘Kaptein NMC Compass Core’ for the first time at the Electric & Hybrid trade fair in Amsterdam from 24 to 26 June. The Compass is particularly light and compact. The Compass Core is just as compact but is also optimised for price-sensitive projects. This complements the manufacturer's Kaptein series, which was launched last autumn with the high-performance ‘Kaptein NMC Navigator’. Thanks to their disruptive technology, all three storage solutions are characterised by further unique selling points.
Optimised for smaller vessels and retrofits
‘We are continuously developing our battery systems - based on customer feedback and practical requirements,’ explains Kilian Hoffmann, CCO at TESVOLT OCEAN. ‘Together, Navigator, Compass Core and Compass cover a wide range of requirements - from high-performance propulsion to retrofitting ships with very limited installation space.’
With a length of 60.5 cm and a height of 14.9 cm, the new storage solutions fit into almost any niche on a ship. And at 5 and 5.9 kg per kWh respectively, they are significantly lighter than other standard batteries on the market, which weigh at least 7 kg per kWh.
Like the Navigator battery modules, the new Compass and Compass Core battery modules can be installed individually and at any angle in the ship. The vibration-resistant battery modules can also be installed on the floor and then walked on. Thanks to their low weight of 75 or 86 kg, the battery modules can be carried by two people and installed in areas of the ship that are difficult to access. A crane is therefore not required for installation. The battery system is designed so that cooling by the ambient air is sufficient - this also simplifies installation and reduces maintenance costs.
Fast charging with 4 C
"Many ship owners find the charging times of commercially available batteries too long. Most marine-approved batteries don't even have a continuous C-rate of 2 C," reports Kent Thoresen, CTO of TESVOLT OCEAN. "At 4 C, our entire Kaptein series offers the highest continuous C-rate available in the maritime industry to date. For ship owners, this means significantly shorter loading times and therefore less downtime in harbour. This is important, because only a moving ship earns money."
Compass Core for particularly price-sensitive projects
The Compass Core was developed for ship projects where the budget is particularly limited. At 5.9 kg per kWh, it is slightly heavier than the Compass and Navigator models, but correspondingly cheaper. The battery system is due to be launched on the market in the 3rd quarter of this year.
Compass for particularly weight-sensitive projects
"With its 5 kg per kWh, the Compass is our absolute lightweight hero. It is therefore suitable for all ship projects in which the weight of the battery system plays a particularly important role," Hoffmann continues. ‘The Navigator, on the other hand, still has the highest performance and therefore the longest range.’ The Compass should be available at the beginning of next year.
Significant demand for electric drives
‘The demand for sophisticated battery systems for clean ship propulsion systems is huge, which was also very clear at the Maritime Industry trade fair in Gorinchem,’ says Michael Miebach, Key Account Manager at TESVOLT OCEAN. This is not surprising, as more and more harbours are no longer allowing ships without clean propulsion to enter. ‘Once again, we have realised that our Kaptein series offers real solutions to a whole range of problems that operators currently face when powering their ships.’
Electric & Hybrid Marine Expo Europe 2025
TESVOLT OCEAN will be presenting its new products at Electric & Hybrid, the leading trade fair for maritime electrification.
Exhibition stand: Hall 8, Stand 8020
About TESVOLT OCEAN
TESVOLT OCEAN is a joint venture between the two maritime industry experts TESVOLT Maritime Solutions from Germany and Ocean Batteries from Norway. The Lübeck-based company develops high-performance battery storage solutions that are specially designed for the demanding conditions at sea. With its innovative products and services, TESVOLT OCEAN is setting new standards in Europe's maritime energy supply.
TESVOLT OCEAN is part of the TESVOLT Group. TESVOLT AG has specialised in battery storage solutions for trade and industry for 10 years and has already received several awards for its innovations. The start-up TESVOLT Energy is also part of the TESVOLT Group.
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