Mastervolt MLI Ultra 24/6000 Achieves RINA Type Approval

We are pleased to announce that Mastervolt's MLI Ultra 24/6000 lithium battery has been awarded RINA Type Approval certification for lithium battery systems, per Sales Bulletin 2260 of 2 February 2026. Please note this certification applies exclusively to the MLI Ultra 24/6000 model and does not extend to the full MLI Ultra range.

What this means for you: RINA Type Approval significantly simplifies the approval process for vessels requiring class compliance. It helps reduce technical risk, documentation effort, and time to commissioning — streamlining project delivery for shipyards, naval architects, and system integrators.

The certification confirms that the MLI Ultra 24/6000 has successfully passed extensive independent testing and meets some of the most stringent performance and safety standards in the marine industry. RINA is one of the world's leading classification societies, delivering classification, statutory services, and certification for marine equipment, materials, and systems across the global maritime industry.

Why the MLI Ultra 24/6000 stands out: it is engineered to power advanced and highly integrated marine electrical systems. Its design enables intelligent system control, enhanced safety, and reliable performance under demanding marine conditions.

Key features include:
• Integrated intelligent Battery Management System (BMS) — actively manages safety, power delivery, and system communication
• Battery-controlled safety relay architecture — enables system-wide protection and control with built-in redundancy
• Stable power for demanding marine loads — ideal for applications such as inverters, winches, and thrusters
• Marine-grade robustness — designed to withstand vibration, humidity, and salt-rich environments typical of harsh marine conditions

The RINA Type Approval further strengthens the MLI Ultra 24/6000's position as a premium lithium battery solution for advanced marine installations where compliance, reliability, and performance are critical.