Marine battery maker AYK Energy is gearing up production after striking a deal to undertake the biggest ever battery retrofit on a vessel operated by Finnish shipping line Wasaline.AYK will install a 10.4MWh battery on the hybrid-electric Ropax ferry…<p><p>https://www.marinelink.com/news/ayk-energy-strikes-biggest-retrofit-deal-525170</p></p>