Sigenergy Battery Review by Sunselect

29 August, 2025.

In the rapidly growing world of renewable energy, battery storage solutions are becoming a vital part of any solar setup. Among the many battery technologies available today, the Sigenergy Battery stands out for its innovation, performance, and smart energy management. But with all its features and benefits, many potential buyers are still left wondering – is the Sigenergy battery truly a smart investment in 2025?

The answer depends on multiple factors, including your energy usage, solar setup, long-term savings, and environmental goals. Let’s break it down to understand why more Australians are exploring the Sigenergy battery and how its price reflects value.

What is the Sigenergy SigenStor?

The Sigenergy SigenStor is a complete solar energy system. It includes a battery, a hybrid inverter, and an optional electric vehicle charger. It’s designed for use with solar panels to generate your own energy and store it for later use. It can be installed in homes with either single-phase or three-phase power. The SigenStor works with both.

You can add the system to most existing solar setups. It means you don’t have to start from scratch if you already have solar panels on your roof. You can also install it as a complete energy system with new panels and an inverter. Either way, this gives you some flexibility. You will install the SigenStor as either DC-coupled or AC-coupled. These terms describe how the battery connects to the rest of your solar system.

DC-coupled means the solar panels send energy straight to the battery. This is more efficient. Less energy is lost when the power generated by your panels is transferred to your battery. DC-coupling is most efficient when installing a complete, new system.

AC-coupled means the solar panels send energy directly to an inverter. Then, the power gets sent to your battery. This setup is typically more suitable for homes that already have solar panels and want to add a battery.

The SigenStor also comes with smart energy software. This software uses artificial intelligence (AI) to manage your energy. It helps you save money by knowing when to charge or discharge the battery. It monitors factors such as your energy usage, the weather, and electricity prices. The whole system is designed to help you lower your bills, utilise more of your solar energy, and keep your home running during power outages.

Key Features of the Sigenergy Battery

The Sigenergy SigenStor stands out for its forward-thinking design and functionality. Here are its top features:

• Modular Scalability: Stackable battery modules (5 kWh or 8 kWh) allow customisation from 5 kWh to 48 kWh per tower, ideal for small homes or large commercial setups.
• Bi-Directional EV Charging: The optional 25 kW DC charger supports vehicle-to-home (V2H) and vehicle-to-grid (V2G) applications, a rare feature in the market.
• Advanced Safety: Five layers of protection, including AI-monitored temperature sensors, aerogel insulation, and an internal fire extinguisher, ensure top-tier safety
• AI-Powered App: The mySigen app, integrated with GPT-4, offers real-time monitoring, troubleshooting, and automated energy optimisation to maximise savings.
• Off-Grid Capability: The system supports seamless off-grid operation with the correct gateway, making it suitable for remote properties.

Pros of the Sigenergy SigenStor

The SigenStor has many strong features. It provides flexibility, intelligent energy control, and reliable backup support. Here are the main benefits.

1. It’s Modular and Scalable. The SigenStor lets you start small and grow over time. Each battery module stores 8 kilowatt-hours (kWh) of energy. You can stack up to six battery modules in one tower. That gives you up to 48 kWh in one SigenStor unit. If you need even more, you can add more towers.

This is helpful if your energy use might grow. For example, if you plan to purchase an electric car or add more appliances later, you can add more storage when needed.

Each battery module has its own energy management system built into it. This means the system continues to function well as you add more storage. You won’t lose performance as your system grows.

2. It Works for Single-Phase and Three-Phase Homes. Some homes in Australia use single-phase power. Others, especially larger homes or ones with high energy needs, use three-phase power. Many batteries only back up one phase of the power supply. That means they only power part of your home during a blackout.

The SigenStor can back up all three phases. This means it can power your whole home, not just one part. If your home has three-phase power and you require full backup, this feature is crucial.

3. You Can Add a DC EV Charger. If you drive an electric car, this is a valuable feature. The SigenStor has an optional EV charger that can be added to the system. You can plug your car into the charger and use your solar power to charge your vehicle.

You can choose between an AC or a DC charger. The DC charger is faster and more efficient. Some electric cars also support bidirectional charging. This means your vehicle can send power back into your home or battery. If your car supports this feature, the SigenStor can take advantage of it.

4. It’s Very Efficient When DC-Coupled. When the SigenStor is installed as a DC-coupled system, it means your solar panels send power straight to your battery without extra steps. You charge your battery faster, and you lose less power as heat in the process.

The SigenStor has up to 98% round-trip efficiency when DC-coupled. This is very high. It means you keep more of the energy your panels make, and that saves you money over time.

5. It Has Smart Monitoring and AI Features. The SigenStor comes with an app called mySigen. The app allows you to view the power generated by your panels, the amount you are using, and the amount stored in your battery.

But it does more than show numbers. The app uses AI (artificial intelligence) to help you save energy. It learns how and when you use power in your home. It checks weather forecasts and electricity prices. Then, it makes smart choices about when to charge or discharge your battery. These choices help you use more solar power and save money.

The AI is built using ChatGPT-4 technology. It improves over time as it learns from your habits.

6. It’s Safe and Designed to Last. The battery uses lithium iron phosphate (LFP) chemistry. This is one of the safest types of battery chemistry. It handles heat better than regular lithium-ion batteries and lasts longer.

The SigenStor also has several safety features:

• Surge protection.
• Short-circuit protection.
• Thermal sensors and temperature control.
• An internal fire extinguisher.

Most batteries do not include an internal fire extinguisher. This shows that safety was a high priority in the design.

Performance and Real-World Feedback

Early adopters in Australia have shared positive experiences with the Sigenergy Battery. One Perth homeowner reported a 70% reduction in power bills after installing a 13-kWh system, noting the user-friendly app and seamless nighttime battery usage. Another user praised the system’s ability to charge from solar panels even during cloudy conditions, highlighting its reliability. Installers have also given high marks, with the SigenStor earning second place in the 2025 Installers Choice Awards, reflecting confidence in its hardware and performance.

However, some users mention the system’s premium price, starting at around $11,000 for an 8-kWh battery with a 5-kW single-phase inverter, excluding installation. While the cost per watt decreases with larger capacities, it’s higher than budget options like Sungrow’s PowCube. The stacking design, while innovative, can complicate installation, requiring skilled technicians to ensure optimal setup.

Who Should Get a Sigenergy SigenStor?

The SigenStor fits some homes better than others. It is a strong system for families who want flexibility and comprehensive support.

It is a good fit if:

• You have a three-phase home and want complete blackout protection.
• You want to start with a small battery and add more storage later.
• You plan to charge an electric vehicle using solar power.
• You want to prepare for future vehicle-to-home or vehicle-to-grid features.
• You want a clean, all-in-one unit that saves wall space.
• You are open to trying a newer brand with strong features.

It may not be the best fit if:

• You prefer to buy from a brand with a long-standing reputation.
• You want a system with no single point of failure.
• You have inconsistent internet connectivity.

Final Verdict: Is It a Smart Investment?

In 2025, the answer is yes, the sigenergy battery is a smart investment for anyone looking to:

• Lower energy bills
• Gain energy independence
• Prepare for outages
• Increase solar self-consumption
• Support a sustainable future

While the upfront cost may seem high, the long-term financial, environmental, and security benefits make it well worth the price. Especially when installed by a trusted name like Sunselect, the Sigenergy battery becomes not just a product, but a strategic energy asset. If you're considering energy storage, now is the time to act. Contact Sunselect today to learn more about the sigenergy battery, price, available packages, and how you can create a smarter, greener home or business.

Reach Out to SunSelect at 1300 867 353 for Expert Guidance and Money-Saving Options.
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