Explore how commercial vehicle battery technology is being adapted for marine applications to support emission reduction goals and cost efficiency. Highlight the challenges of integrating these batteries into maritime environments, focusing on thermal management, vibration resistance, and energy density. Leveraging automotive innovations, such as advanced cooling systems, and enhanced battery performance at sea. While mass-produced components reduce costs, customization may be needed for specific vessels and show integration lessons learned in this market. Also detailing leveraging serviceability is also crucial to minimize downtime. Ultimately, the synergy between commercial and marine sectors offers a practical path to electrification and sustainability.