Lehmann Marine launches new water-cooled AQUBE 2C LFP battery system
Hittfeld, 24 June 2025 – German-based Lehmann Marine, a leading provider of maritime battery systems, has introduced its latest product development, AQUBE, at the Electric & Hybrid Marine Expo in Amsterdam. This new water-cooled, high-power energy storage solution features a continuous 2C charge/discharge rate.
Strategic growth and market expansion
The company anticipates highly positive market feedback, with numerous potential projects emerging in a maritime industry that is rapidly transitioning toward sustainability. Following its recent merger with the Greek Sunlight Group, Lehmann Marine is now well positioned to significantly scale up its production capacity to up to 300 MWh per year. Additionally, the company benefits from Sunlight Group’s global service network, comprising over 200 field engineers, which ensures worldwide support for Lehmann Marine products.
Proven technology in a new 2C battery system
AQUBE combines the compact and flexible design of Lehmann Marine‘s best-selling CUBE with advanced water-cooling technology derived from the proven COBRA battery system. This combination resulted in the high-power energy storage solution AQUBE, which features safe lithium-iron-phosphate (LFP) cell chemistry with a continuous 2C charge/discharge capability.
Safety benefits for marine applications
Enhanced safety is a key advantage of LFP cells. Compared to traditional nickel-manganese-cobalt (NMC) batteries, LFP batteries are significantly safer. Even in extreme situations where thermal runaway could occur, LFP batteries are not prone to fires. In such cases, only gas is released and vented outside. This makes LFP battery systems a particularly sustainable and safe choice for the maritime industry.
