Batteries for maritime applications

Safety is paramount in marine environments. Batteries must meet rigorous international standards and certifications to ensure safe operation under extreme conditions such as saltwater exposure, vibration, and temperature fluctuations. Fire prevention and containment systems are critical components of certified marine battery systems.

Advanced cooling systems and efficient thermal management are essential to maintain battery lifespan, prevent overheating, and minimize energy consumption.

Time in port is limited, and rapid turnaround is vital for commercial viability. Battery systems that support fast charging provide a clear advantage by reducing downtime and enabling continuous operations.

Vessels vary widely in size and function—from electric ferries to hybrid cargo ships. Modular and scalable battery systems allow for flexible integration.

WATTALPS batteries are certified with Bureau Veritas Maritime Type Approval, IEC 62619, ISO 26262, and more.

Thanks to unmatched thermal control based on our patented immersion cooling technology, you can downsize the battery by up to a factor 4* and there is no need for a dedicated battery room chiller. This saves both space and weight, thereby reducing your vessel’s overall energy consumption.

With their modular design, WATTALPS batteries are well suited for narrow spaces, which is often the case on boats. Our technology integrates both cooling and gas venting systems, saving space and delivering up to twice the energy in the same volume.

Here are some additional advantages: with WATTALPS batteries, you benefit from ultra fast charging thereby increasing uptime. You secure your return on investment with up to 8x longer lifespan* through advanced temperature control, and benefit from high efficiency cooling without any risk of water leakage.