Echandia has been chosen to deliver a new battery system for E/F Ellen, operated by Ærøfærgerne in Denmark. The company will supply a 3.2 MWh LTO battery system to replace the existing 4.3 MWh NMC system. Designed for a 15-year lifetime, the new system supports multiple fast-charging cycles every day with high efficiency.
“Allan Filtenborg from Ærøfærgerne said: ‘We are very pleased that Echandia has secured the tender. Their battery system is well-suited for this type of ferry operation. The solution meets our requirements for long lifetime, high efficiency, and maximum safety.’”
Echandia’s LTO (Lithium-Titanate Oxide) technology fits perfectly for high-frequency, fast-charging RoPax ferry routes where uptime is critical. The batteries support very high C-rates, allowing over 20,000 charge cycles and recharging in about 25 minutes, around 10 minutes faster than before.
Delivered in 2019, Ellen was the world’s first long-range, pure electric ferry and a milestone for zero-emission passenger transport. The vessel operates between the island of Ærø and the Danish mainland. After eight years of service, the original NMC battery system will be replaced due to wear and reduced capacity. Ærøfærgerne selected Echandia as supplier after a competitive tender process. The ferry will resume operation with the new system in May 2026.
“This project shows Echandia’s expertise as a marine battery supplier,” said Torbjörn Bäck, CEO of Echandia. “We will deliver and commission the complete battery system within six months, ensuring Ellen is ready for summer operations in 2026.”
The upgrade proves that replacing older batteries with modern systems is both technically and financially viable, offering longer life, higher efficiency, and improved safety.
