Dutch energy storage systems provider for maritime and industrial applications, EST-Floattech, has announced the expansion of its Octopus series with the introduction of lithium-iron-phosphate (LFP) battery modules.

Featuring a long cycle life, high thermal stability, and safety, LFPs are a type of rechargeable lithium-ion battery that uses lithium-iron-phosphate as its cathode material. The company says the addition aims to address market demand for battery systems based on another chemical configuration.

EST-Floattech says its newly introduced energy storage system is engineered for reliable and robust large scale battery systems and works together with the Octopus series battery management system (BMS). The LFP is based on recent technological advancements, especially in terms of the energy density and cost per kilowatt-hour.

Long cycle lifetimes make the LFP modules particularly suitable for vessels discharging by day and charging overnight. Each module delivers a nominal voltage of 52 V, a capacity of 233 Ah, and is designed for scalable integration into larger battery systems of multiple megawatt-hours. The modular rack is designed to be flexible in both height and width and includes integrated ventilation to help ensure optimal thermal performance. The advantages of air cooling compared to liquid coolin include no risks of leakage, lower maintenance and a lighter total weight.

The BMS is designed to ensure seamless communication, precise thermal and power management, and real-time diagnostics, enabling optimised performance, operational safety, and compliance with maritime classification and cybersecurity standards.

“By introducing LFP to our Octopus series, we empower shipbuilders and operators with even more choice,” says EST-Floattech CEO Mark Witjens. “We understand that different vessels have different energy profiles. LFP gives us the ability to serve applications with a high energy capacity demand and long discharge and charge cycles with a robust, safe, and cost-effective solution—without compromising on our commitment to reliability and quality. The development of LFP is the logical step for EST-Floattech to cater to the growing demand for different chemistries by shipyards and shipowners.”

LFP is also said to enable shipowners to optimise for application-specific needs, whether extending battery life, improving sustainability of the fleet, or implementing systems with the highest standards in battery safety.

“Our engineers have qualified the new LFP modules to meet the same high standards we apply across the Octopus series,” said EST-Floattech technical director Diederick Stam. “This addition enhances our ability to support even more vessel designs and hybrid propulsion systems, enabling cleaner and smarter shipping. During the entire development process we’ve continuously adhered to our ‘safe- by-design’ mentality.”