Built Specicially for the Demands of Life on the Water.

Marine environments place unique demands on battery systems. Continuous vibration, shock loads, humidity, salt exposure and varying operating conditions create challenges rarely encountered in land-based applications.

While many battery systems used in marine projects originate from industrial or stationary energy storage applications, TESVOLT OCEAN systems are specifically engineered for vessel operation. Mechanical design, module architecture and system integration are all developed with the realities of life pn the water in mind.

Continuous vibration may not immediately cause system failure, but over time it can accelerate component wear, increase maintenance requirements and reduce long-term reliability. By designing for maritime operating conditions from the outset, our systems minimise mechanical stress throughout the battery lifecycle.

The result is more than compliance with marine standards. It means reduced maintenance, fewer

Any-angle installation. Maximum flexibility.

No two vessels are the same. Space constraints, access limitations and existing vessel layouts mean every integration project presents its own challenges.

TESVOLT OCEAN systems are designed with flexibility in mind. Compact dimensions, modular architecture and any-angle installation capability allow batteries to be integrated where they make the most sense rather than where traditional systems permit.

Whether supporting a retrofit project or a new-build vessel, this flexibility reduces engineering complexity, simplifies installation and helps maximise available onboard space.

The result is faster project execution and greater freedom when designing the overall energy storage system.

Reducing downtime through intelligent serviceability.

Battery systems should be designed not only for performance but also for long-term operation and maintenance.

TESVOLT OCEAN systems use a modular architecture that simplifies inspection, maintenance and component replacement. Service activities can often be performed at module level, helping reduce downtime and avoiding unnecessary system-wide replacement.

Combined with remote diagnostics and system monitoring capabilities, operators gain greater visibility into battery health throughout the lifecycle.

For commercial vessels where availability directly impacts revenue, serviceability is not simply a maintenance feature—it is a core design principle.

Lightweight, High-Energy Design

Weight remains one of the most critical considerations in vessel electrification. Every kilogram impacts efficiency, payload capacity and overall vessel performance.

TESVOLT OCEAN systems combine high energy density with a compact footprint, enabling operators to maximise available onboard energy without unnecessary weight penalties.

This becomes particularly important in retrofit projects where vessel dimensions and weight distribution are already fixed.

By delivering more usable energy within a smaller installation envelope, operators gain greater design flexibility while supporting longer operating ranges and improved vessel efficiency.

From spreadsheets to real-time visibility.

Successful vessel electrification requires more than selecting a battery system. Understanding power requirements, charging opportunities, operational profiles and energy consumption is critical to designing a solution that performs reliably in the real world.

With MERI, TESVOLT OCEAN brings intelligence to every stage of the electrification journey. During project planning, MERI Planning helps evaluate vessel operating patterns, estimate energy demand, assess charging requirements and support battery sizing decisions. What was once a process heavily dependent on spreadsheets and assumptions becomes faster, more transparent and data-driven.

Once a vessel enters operation, MERI OnBoard provides continuous visibility into battery performance and system health. Operators gain access to real-time operational data, diagnostics and lifecycle insights that support informed decision making.

By identifying trends early and highlighting potential issues before they impact operations, operators can plan maintenance more effectively, optimise battery utilisation and maximise system availability. This proactive approach helps reduce unnecessary replacements, minimise downtime and extend the useful life of the battery system.

The result is greater transparency, lower operational risk and a smarter approach to managing maritime energy storage throughout the vessel lifecycle.