Lehmann Marine Launches New Water-Cooled AQUBE 2C LFP Battery System
**June 27, 2025**
German-based Lehmann Marine, a prominent provider of maritime battery systems, has unveiled its latest product, the AQUBE, at the Electric & Hybrid Marine Expo in Amsterdam. This innovative water-cooled, high-power energy storage solution boasts a continuous 2C charge and discharge rate.
**Strategic Growth and Market Expansion**
The company expects a favorable response from the market, with numerous potential projects emerging as the maritime industry shifts toward sustainability. Following its recent merger with the Greek Sunlight Group, Lehmann Marine is well-positioned to significantly increase its production capacity to up to 300 MWh per year. The partnership also grants the company access to Sunlight Group’s extensive global service network, which includes over 200 field engineers to provide worldwide support for Lehmann Marine products.
**Proven Technology in a New 2C Battery System**
The 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 results in a high-power energy storage solution that utilizes safe lithium-iron-phosphate (LFP) cell chemistry with a continuous 2C charge and discharge capability.
**Safety Benefits for Marine Applications**
Enhanced safety is a significant advantage of LFP cells. In contrast to traditional nickel-manganese-cobalt (NMC) batteries, LFP batteries are much safer. Even in extreme situations where thermal runaway could occur, LFP batteries do not pose a fire risk; they only release gas, venting it outside. This makes LFP battery systems a particularly sustainable and safe choice for the maritime sector.
**Modular and Compact for Space-Constrained Vessels**
Like all of Lehmann Marine’s product solutions, the AQUBE battery system features a modular and flexible design. Its compact system concept allows for easy adaptation to meet the specific needs of various vessels with limited space. This flexibility, along with the ease of maintenance provided by small, accessible battery modules, offers customers exceptional efficiency and reliability.
**Certified for a Broad Range of Maritime Applications**
The AQUBE is designed to comply with DNV and ESTRIN standards, making it suitable for a wide array of applications and vessel types. High-power propulsion systems for larger vessels, such as ferries, container feeders, or offshore support vessels (OSVs), can now leverage Lehmann Marine’s safe and compact LFP battery technology. Short turnaround cycles for vessels will no longer hinder the consideration of fully electric or hybrid electric propulsion.
**Scalable Energy Storage with Easy System Integration**
Energy storage can be configured at any scale using modular units arranged in strings of up to 1,000 VDC. The battery system is equipped with an integrated battery management system (BMS), pre-charge functionality, customized racking, and a newly developed switch unit. AQUBE is designed for straightforward connection to the vessel’s water cooling system, ensuring safe and reliable operation.
**A Growing Legacy in Maritime Energy Solutions**
Lehmann Marine’s portfolio of safe and compact battery systems has a solid reputation in the maritime industry. The best-selling CUBE is type-approved by BV, DNV, LR, and RINA. Recently commissioned references that utilize CUBE power include fully electric ferries, fish farm support vessels, river cruise ships, and crew transfer vessels. With high demand for marine battery systems in the shipping industry, Lehmann Marine is poised to meet this demand by adding AQUBE to its product lineup. The first systems are set to be delivered by mid-2026.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/lehmann-marine-unveils-innovative-water-cooled-aqube-2c-battery-system-for-sustainable-maritime-energy-solutions/
