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Tuesday, February 23, 2021 

Now that DNV GL certification has been obtained, the Cobra battery system from Becker Marine Systems can be used for a wide range of inland waterway and maritime applications.

Due to the growing demand for the compact battery system, Becker is expanding Cobra production at its Winsen (Luhe) location. DNV GL has certified the Cobra (COmpact Battery RAck) system to maritime requirements, alongside certification including IEC 62619 and IEC 62620.

Dirk Lehmann, MD Becker Marine Systems, said: “We have achieved the highest standard of safety since our COBRA system also meets all safety requirements down to the level of the individual cell.”

The Lithium Ferro Phosphate (LFP) technology has now been found to be a safer and more environmentally friendly alternative to the cobalt-based cell technologies used previously. Another advantage is the absence of cobalt since this raw material is viewed very critically, particularly from an environmental and socio-political point of view. Added to this is the high recycling rate since this battery cell is almost completely recyclable.

“This cell chemistry eliminates the risk of fire in the event of a short circuit or overheating, for example, but we still get a compact system with high energy density”, said Lehmann.

“In addition, we have succeeded in developing an attractively priced battery system for the maritime market that is freely scalable from a few kWh to several MWh”, said Godehard Gauf, head of the Cobra business unit.

There are already initial orders for the new battery system for use in a workboat with 420kWh battery capacity and for a tourist passenger ship. Both systems will be delivered this year. The Cobra system is currently being tested in combination with fuel cells for use in hybrid drive systems. The technology enables access to funding at both the German federal and state levels.

“Following a decision by the Ministry of Transport, coastal and inland vessels are eligible for subsidies to convert to emission-reducing propulsion systems – and this naturally includes battery systems”, said Lehmann.

Becker Marine Systems says it is opening up a large market in the hybridisation or electrification of ships, in combinations with fuel cells, in both inland waterway and maritime shipping. To meet this demand the Hamburg-based company will continue to invest in the expansion of its infrastructure.

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