{"id":80340,"date":"2026-02-18T09:01:06","date_gmt":"2026-02-18T07:01:06","guid":{"rendered":"https:\/\/www.wasaline.com\/?post_type=portfolio&#038;p=80340"},"modified":"2026-02-18T09:02:30","modified_gmt":"2026-02-18T07:02:30","slug":"worlds-largest-battery-capacity","status":"publish","type":"portfolio","link":"https:\/\/www.wasaline.com\/en\/portfolio-item\/worlds-largest-battery-capacity\/","title":{"rendered":"World&#8217;s largest battery capacity for a RoPax vessel installed at Aurora Botnia"},"content":{"rendered":"<div id='full_slider_1'  class='avia-fullwidth-slider main_color avia-shadow   avia-builder-el-0  el_before_av_custom_layout  avia-builder-el-first   container_wrap fullsize'  ><div  class='avia-slideshow av-mlqmagvh-02344509d93358a80009461076a3ca9a avia-slideshow-featured av_slideshow_full avia-slide-slider av-slideshow-ui av-control-hidden av-no-slider-navigation av-hide-nav-arrows av-slideshow-manual av-loop-once av-loop-manual-endless av-default-height-applied   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element_template='' one_element_template='' av_uid='av-m67sqtjn' sc_version='1.0' admin_preview_bg='']\r\n<a href=\"https:\/\/www.wasaline.com\/en\/about-us\/press-room\/image-bank\/\">Download press images \u2192<\/a>\r\n[\/av_textblock]\r\n\r\n[\/av_one_third][\/av_section]\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-eb00416a2f056847baa920658c068e4e\">\n#top .av-special-heading.av-av_heading-eb00416a2f056847baa920658c068e4e{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-av_heading-eb00416a2f056847baa920658c068e4e .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-eb00416a2f056847baa920658c068e4e .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-eb00416a2f056847baa920658c068e4e av-special-heading-h1 blockquote modern-quote modern-centered  avia-builder-el-2  el_after_av_custom_layout  el_before_av_textblock  avia-builder-el-first '><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >World&#8217;s largest battery capacity for a RoPax vessel installed at Aurora Botnia<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-mlqmd1rs-7d149a161d91392e173e1099a4071740 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Wasaline has successfully completed sea trials following a major battery upgrade on board Aurora Botnia, which now features the largest battery capacity ever installed on a RoPax vessel worldwide.<\/p>\n<p>The vessel\u2019s battery capacity has been expanded from 2.2 MWh to an impressive 12.6 MWh. The upgraded system has been approved for operation in traffic by DNV.<\/p>\n<p>The new batteries, supplied by marine battery manufacturer AYK Energy, can store nearly five times more energy than the previous battery packs, significantly enhancing the vessel\u2019s energy efficiency and environmental performance.<\/p>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mlqmdyzh-df0f48588068992fb71336fbd6fba75c\">\n.avia-image-container.av-mlqmdyzh-df0f48588068992fb71336fbd6fba75c img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-mlqmdyzh-df0f48588068992fb71336fbd6fba75c .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-mlqmdyzh-df0f48588068992fb71336fbd6fba75c av-styling- avia-align-center  avia-builder-el-4  el_after_av_textblock  el_before_av_textblock '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-80331 avia-img-lazy-loading-not-80331 avia_image ' src=\"https:\/\/www.wasaline.com\/wp-content\/uploads\/2026\/02\/aurorabotnia-batterypack-horizontal-845x684.jpg\" alt='Aurora Botnia battery pack' title='aurorabotnia-batterypack-horizontal'  height=\"684\" width=\"845\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.wasaline.com\/wp-content\/uploads\/2026\/02\/aurorabotnia-batterypack-horizontal-845x684.jpg 845w, https:\/\/www.wasaline.com\/wp-content\/uploads\/2026\/02\/aurorabotnia-batterypack-horizontal-495x400.jpg 495w\" sizes=\"(max-width: 845px) 100vw, 845px\" \/><\/div><\/div><\/div>\n<section  class='av_textblock_section av-mlqmdjfq-0c3b8bd94658a2812751c4ae903a900b '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>The upgrade was started in normal operations and finalized at BLRT Repair Yards in Finland. W\u00e4rtsil\u00e4 completed the system integration within a tight schedule, ensuring minimal operational disruption. The Danfoss drives were configured for the added batteries and updated to their latest versions, equipping Aurora Botnia with state-of-the-art drive technology. Foreship did the evaluation and basic Design.<\/p>\n<p>&#8211; This has been an interesting but also highly demanding project, particularly given the limited timeframe. The entire propulsion system was upgraded during docking, and battery optimization continued while the vessel was back in operation. Our partners did a tremendous job, says <strong>Jonas Teir<\/strong>, Technical Director of Wasaline.<\/p>\n<p>&#8211; We would like to extend our sincere thanks to all above partners involved, to Rescue Team Finland for excellent on site assistance with everything from fire watches to installation work, to Tallinn Shipyard for steel and pipe works and a special thanks to the entire crew especially the technical department onboard for their professionalism and extreme adoptability that is needed to execute this kind of a project during normal operations, Teir concludes.<\/p>\n<p>With this milestone, Wasaline further strengthens its position at the forefront of sustainable maritime transport and technological innovation.<\/p>\n<p><strong>For more information, contact:<\/strong><\/p>\n<p>Jonas Teir, Technical Director, Wasaline<br \/>\njonas.teir@wasaline.com, +358 50 374 5292<\/p>\n<p><strong>Press contact:<\/strong><\/p>\n<p>Catarina Fant, Director, Brand &amp; Communications, 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