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Marine Battery Systems

Our Helios marine battery systems are made with offshore conditions in mind, where performance, resilience, and adaptability matter most.

Our LFP batteries provide steady power and prioritize safety with an advanced Battery Management System (BMS). This system supports scalable configurations and voltage ranges up to 1000V, serving everything from leisure boats to high-powered marine vessels.

The boat battery monitor makes it easy to keep track of your system’s health, while our hardware is made to endure the unique pressures of marine life. Each unit is IP67 waterproof, resists corrosion, and is constructed to perform under continuous vibrations and fluctuating temperatures. Whether it’s a sunny marina or open waters with harsh winds, these batteries remain unfazed.

With thoughtful upkeep, our power marine batteries can remain in excellent condition for 15–20 years without notable reduction in capacity. Their compatibility spans a wide range of electric motors – both inboard and outboard – and they blend flawlessly with our own Electric Propulsion & IoT Systems or those from other manufacturers. These batteries are a steadfast solution for anyone seeking strong and reliable marine energy storage.

Pioneering blade battery cell technology

We’re advancing marine power with cutting-edge innovations in energy storage – most notably through blade battery cells. Integrated into our Helios marine battery systems, these slim, flat cells deliver advantages that truly support the marine world. Their compact design allows for more flexibility in system layouts, while uniform temperature control reduces strain on the batteries during long hours on the water.

Built with resilience in mind, the blade cells offer excellent resistance to vibration—a must when navigating choppy seas. They continue to perform at peak capacity even when temperatures drop to -20°C or rise to 60°C. This means no compromise on power, no matter the season or region.

To keep boat operators informed and confident, the battery monitoring system—featuring our Helios Marine Link —offers real-time insights into charge status, overall health, and any performance alerts. With intuitive remote access, it becomes easy to stay updated and make adjustments when needed.

Charging efficiency is another major benefit. Depending on battery size and the equipment used, our technology supports swift recharges, often completing significant replenishment within a few hours. At Helios, we don’t just offer systems. We build confidence into every charge.

Why choose Helios Marine Battery Systems

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Safety

We firmly believe that LiFePO4 battery chemistry is the future of the marine industry. Known for its safety and stability, this technology offers excellent charge and discharge performance and is highly resistant to overheating. The battery maintains voltage stability across all states of charge (SOC), ensuring consistent power delivery even in demanding marine conditions.

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Modularity

Our JAM (Just Add Module) plug-and-play system offers expandable capacity and voltage, providing the flexibility to meet your specific needs. In addition to that, our advanced software enables you to configure your battery system, allowing for a fully customized solution.

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Energy Density

LFP batteries have overcome a past limitation: their lower energy density compared to other options, which limited their use in e-mobility. Today, LiFePO4 energy density is on par with other Li-ion batteries, while retaining key qualities like safety and long cycle life (SOL). Major automotive companies are now adopting this technology and integrate LiFePO4 into their EV designs.

Specifications

Chemistry

LiFePO4

Cell type

Blade

Capacity

9kWh / 175Ah @1C

Nominal Voltage

51.2V

Battery Life

>3,000 cycles at 80% DOD

Max charging voltage

57.6V

Cutoff voltage

40V

Charging temperature range

0–60℃

Discharging temperature range

-20-60℃

Max continuous charging current

2C

Max continuous discharging current

2C

Warranty

2 years
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360 View of the Marine Battery Systems

    FAQS

    Our systems use LiFePO4 (Lithium Iron Phosphate) blade battery cells — known for superior thermal stability, consistent voltage delivery across all states of charge, and high resistance to overheating.
    Blade cells are slim and flat, allowing more flexible system layouts. They provide uniform temperature control, strong vibration resistance, and full performance in temperatures ranging from -20°C to 60°C.
    Each system includes thermal management, short-circuit protection, overcharge protection, and fire-resistant casings — all managed by an advanced Battery Management System (BMS).
    Yes. LFP energy density is now on par with other Li-ion types while retaining its key advantages — safety and long cycle life. Major automotive manufacturers have adopted LiFePO4 for the same reasons.
    Each module delivers 9kWh / 175Ah at 51.2V nominal, with a max charging voltage of 57.6V, 2C continuous charge/discharge rates, and over 3,000 cycles at 80% depth of discharge.
    Yes. Our systems support scalable configurations with voltage ranges up to 1000V, making them suitable for everything from leisure boats to high-powered marine vessels.
    Yes. Helios Marine batteries work with a wide range of inboard and outboard electric motors — both our own propulsion packages and those from other manufacturers.
    Yes. The batteries can be paired with solar panels for renewable energy input, extending your vessel's range and reducing environmental impact.
    With proper maintenance, our batteries deliver 15–20 years of service without notable reduction in capacity — even under heavy use.
    Every unit is IP67 waterproof, built with stainless steel and corrosion-resistant materials, and engineered to perform under continuous vibration and extreme temperatures.
    Yes. Our JAM (Just Add Module) plug-and-play architecture lets you add capacity and/or voltage at any time. Our software also allows full system configuration for a customized setup.
    Yes. When paired with the Helios Marine Link module, you get real-time remote monitoring of charge levels, system health, and performance alerts.

    Ready to Take the Next Step?

    Your vessel deserves a power system that honors both tradition and innovation. Helios Marine Battery Systems offer trusted marine durability with future-ready performance - a combination that builds confidence on every voyage. Get a personalized quote and see how we can transforms your boating experience.

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