European-Made Energy Storage

THE SUN-MASTER KNOWLEDGE BLOG

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Why You should Invest in the SUN-MASTER ENERGY SYSTEM Now

Greater Security, Lower Risk

Energy storage systems are a long-term investment. SUN-MASTER consciously relies on European manufacturing, modular design, and state-of-the-art CNC technology. The result: rapid spare part availability, flexible upgrades, and maximum operational reliability. In contrast, many compact storage systems from China reach their limits – both in terms of expandability and spare part availability.

European Manufacturing vs. Chinese Compact Storage Systems

Energy storage systems are at the heart of modern energy supply – whether for businesses, agriculture, or private use. However, when choosing a system, it’s not just performance that matters, but also reliability and future-proofing. This is precisely where SUN-MASTER excels: with European manufacturing and a modular system architecture that offers clear advantages over compact storage systems from China.

European Manufacturing – Fast Delivery and Service

Our storage systems are manufactured in Europe. For our customers, this means: short supply chains, rapid spare part availability, and thus maximum operational reliability – a crucial factor, especially in sensitive areas such as commercial enterprises or hospitals, where failures can have severe consequences.

In contrast, many Chinese storage systems are compact units, manufactured and shipped as a complete system. The problem: spare parts are difficult to obtain and often only available for a limited time. Should a component fail, a complete system shutdown is imminent – leading to incalculable costs.

Modularity vs. Compact Design

SUN-MASTER storage systems allow for upgrades. Thanks to our CNC-manufactured modules and the inherent flexibility within the energy storage module, we can integrate state-of-the-art components at any time – cost-effectively and flexibly. This ensures future-proof usage for decades.

Chinese compact storage systems, on the other hand, allow for few upgrades. Once the technology is installed, it remains in that form – and if spare parts are unavailable, a complete replacement is the only option.

Maximum Operational Reliability through Series Connection

Another advantage of SUN-MASTER systems: If a module fails, the storage system continues to operate. The series connection ensures that the energy supply remains stable – a decisive advantage for businesses that rely on a constant power supply.

With compact storage systems, it’s different: If a module fails there, it often leads to a complete system shutdown. For businesses, this means not only downtime but also financial losses.

Positive Impact for Commercial Businesses and Sensitive Infrastructures

  • Commercial Businesses:
    Production and IT systems remain stable even in the event of a malfunction, avoiding costly downtimes.
  • Hospitals:
    Supply security is guaranteed at all times – even if individual modules fail.
  • Agriculture:
    Refrigeration units, pumps, or control systems continue to operate reliably, even in the event of defects.

Conclusion: Future-Proof Investment with SUN-MASTER
With European manufacturing, modular upgradeability, and fail-safe technology, SUN-MASTER energy storage modules offer decisive advantages over compact storage systems from China. For our customers, this means: rapid spare part availability, low investment costs for upgrades, and maximum operational reliability. An investment that pays off in the long term, especially for businesses and critical infrastructures.

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Frequently Asked Questions.

An overview.

Where Can the Energy Storage System be Placed and how is it Installed?

Our energy storage system is usually installed in a basement, cellar vault, or a
suitable storage room. For maximum safety – especially when multiple
modules are stacked on top of each other – our technicians perform a professional wall mounting.

The modules are delivered by freight forwarder or by our own team. Thanks to integrated rollers, they can be easily moved to the installation site, after which the rollers are removed. Alternatively, the modules can also be safely lifted using the integrated eyelet system. For stacking the energy storage modules, the eyelets can also be removed.

Our energy storage modules utilize particularly safe 48V technology. The installed LiFePO₄ cells are considered extremely reliable and, unlike conventional lithium-ion batteries, cannot self-ignite. This means for you: maximum safety with full performance.

In the front area of the storage system, where the electronics such as the BMS and wiring are located, our engineers have deliberately planned additional space. This ensures good ventilation and protects the components from overheating. At the same time, we remain flexible: In case of future adjustments – for example, due to new legal requirements or new state-of-the-art components – additional components can be easily integrated.

Fundamentally, our energy storage systems are very durable and low-maintenance. However, if a malfunction does occur, the failure is usually attributable to the electronics—specifically the BMS (Battery Management System) or the communication interfaces (RS485 / CAN bus). These components are subjected to greater stress than the actual LiFePO₄ cells, which are extremely robust and long-lasting.
The typical spare part costs per module are approximately:

BMS: €200–250
Communication Board: €250–300
LiFePO₄ Cell Unit: €150–200

Briefly explained:
BMS (Battery Management System): Monitors and protects the cells, ensures uniform charging and discharging.
RS485 / CAN-BUS: Enables communication between the storage system and the inverter and master module.

All components in the energy storage system are securely mounted and thus protected from vibrations. The stable aluminum frame provides additional stability, while the outer casing made of HPL panels offers particularly robust protection.

HPL (High Pressure Laminate) is a high-pressure laminate characterized by its extreme robustness: It is shock- and scratch-resistant, withstands moisture and UV radiation, and is flame-retardant (fire protection class B1). Thus, the internal components are reliably protected against external environmental influences such as heat, moisture, or mechanical stress – and the storage system remains operational long-term.

LiFePO₄ cells are considered particularly safe and are extremely rarely self-igniting. Should a fire nevertheless occur internally, it would not spread outwards: LiFePO₄ cells only ignite at around 200-250 °C, while the robust HPL panels of the outer casing are only flammable from approximately 400-500 °C. This means that even in extreme cases, fire spread is ruled out.
Even after installation, we are reliably there for you. Should components ever fail, you can reach us by phone from Monday to Friday between 8:00 AM and 5:00 PM at +49 39724-268000 or anytime by email at info@sun-master.de. Our nationwide installation service ensures that defective electronic components or individual cells are replaced directly on-site within three working days – quickly, professionally, and reliably.
Our energy storage systems usually consist of several modules. If a single module fails, the overall storage system remains functional – only the performance is reduced.
A storage system with 5 modules, each with 16 kWh capacity and 8 kW power, results in a total of 80 kWh capacity and 40 kW power. If one module fails, 64 kWh capacity and 32 kW power are still available. The storage system therefore continues to operate reliably, albeit with slightly reduced performance.
  • Production Facilities & Machine Halls (24/7 Operation): Even if a module fails, the energy supply remains stable, allowing machines to continue running. Production downtimes are thus reliably avoided.
  • Hospitals & Emergency Power Systems: In safety-critical areas, a continuous supply is crucial. Even if a module fails, the power supply remains guaranteed – an important factor for life support systems and sensitive medical equipment.

Thanks to the modular design, maximum operational reliability is thus ensured.

A possible failure is displayed directly in the SUN-MASTER App. There, you can not only monitor the status of your storage system, but also control yields and consumption, optimize self-consumption, and intelligently manage your energy flows.
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