Li-ion chosen for Japan’s first fully battery-powered vessel


GS Yuasa has announced that its industrial lithium-ion batteries have been installed as the only power source in Japan’s first fully battery-powered, zero-emission passenger ship. 

Built by Oshima Shipbuilding Co. Ltd, the state-of-the-art 340 tonne vessel, known as “e-Oshima”, uses GS Yuasa lithium-ion storage batteries as its only propelling power source, as well as for all additional power required during operations. 

The ocean-going passenger ferry, which had its naming ceremony on 12 June, is the first of its kind in Japan and has an impressive capacity of 50 people, one large bus and four cars. Being battery-powered means the zero-emission vessel emits no CO2 – either while in motion or at anchor. It also helps reduce noise and vibration.

At 35 metres long, e-Oshima is equipped with an automatic ship handling system and aims to establish functions such as channel maintenance and collision prevention, while being utilised as a company’s customer pick-up ship.

GS Yuasa LIM50EN-12 lithium-ion battery

In addition to providing motive power, GS Yuasa’s high capacity lithium-ion batteries (approximately 600kWh) supply power for communications, navigation, radio equipment and air conditioning. They also play an important role in the ferry’s labour-saving automatic navigation function, which employs next-generation IoT technologies and has enhanced safety features. The vessel can be charged in around two and a half hours and the battery system includes management equipment that provides multiple layers of redundant protection for the batteries.

GS Yuasa lithium-ion cells are designed for marine operations, which require highly efficient charging and discharging. They have high energy density and long life, as well as a track record of being installed in numerous high-profile, special applications, including deep sea submarines, the International Space Station and the state-of-the-art Boeing 787 Dreamliner. 

GS Yuasa LIM50EN-12 lithium-ion batteries are also used for various industrial applications. Their reliability and long cycle life makes them ideally suited for Uninterruptible Power Supply (UPS), high energy industrial systems, energy storage, smart grid and AGV traction power. 


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