As more homeowners look for ways to reduce their electric bills and increase energy independence, solar battery options keep evolving.
In 2025, new technology and designs make it easier to find a battery that fits your budget, power needs, and energy goals. But with so many choices, it can be hard to know which battery will really deliver.
At Penrith Solar Centre, we have our fingers on the pulse of the solar industry, especially when it comes to batteries. 2025 promises to be a great year for the product with innovations flooding the market. We’ve narrowed down our list to a simple top five presented in no particular order.
In this article, you’ll learn about the following batteries:
- Tesla Powerwall 3
- Enphase IQ Battery 5P
- Sungrow Hybrid Battery
- BYD Battery with Fronius Gen24 Inverter
- Up-and-Coming Battery: Sigenergy
We’ll go over the best features, the unique strengths of each model, and the pros and cons of choosing each one. Whether you’re looking for affordability, advanced technology, or the best warranty, this guide will help you find the right battery for your home.
Tesla Powerwall 3
Overview:
The Tesla Powerwall 3 is one of the most talked-about batteries on the market. It’s the successor to the Powerwall 2, which was Australia’s leading solar battery for over seven years. Even if Tesla stopped making the Powerwall 3, the Powerwall 2 would still be one of the best options available.
The Powerwall 3 takes things up a notch with a built-in hybrid solar inverter. This integration is a big step forward. It’s an entire system housed in a compact unit, making installation easier and cutting down on extra equipment.
Specifications
- Capacity: 13.5kWh
- Scalability: Expandable up to four units for a capacity of 54kWh for now, but in the first quarter of 2025 it will be expandable up to 216kWh.
- Power Output: 11.04kW continuous power output. Unfortunately, in most cases, it must be programmed for a maximum output of 10kW due to DNSP grid limits for inverters in New South Wales.
- Operating Temperature: -20°C to 50°, indoor and outdoor rated.
- Dimensions: 1099 mm x 609 mm x 193 mm.
- Weight: 130kg
- Mounting: Floor or wall mounting.
Key Benefits:
Ease of Installation: With the inverter built-in, the Powerwall 3 doesn’t require a separate solar inverter. Tesla even designed a custom trolley to make it faster and simpler to install. With this feature, Penrith Solar, for example, can install both the Powerwall 3 and solar panels in one day, saving time and reducing labour costs. This can significantly reduce your payback period.
Affordable Option: The combination of solar and battery storage with the Powerwall 3 has a payback period of around five years, which is excellent. If you connect it to a Virtual Power Plant (VPP), you can boost your savings even more.
User-Friendly App: Tesla’s app is one of the most powerful, user-friendly apps in the solar battery industry. The app allows you to monitor your energy usage, battery status, and solar production in real time, giving you complete control over your system.
Pros and Cons:
Pros:
- Streamlined design with an inbuilt hybrid inverter.
- High power output.
- Affordable, with a competitive price that beats some cheaper brands.
Cons:
- Central Point of Failure: If the inverter inside the Powerwall 3 fails, you lose both the solar and battery functions. This single point of failure is a risk that some other batteries don’t have.
- Single-Phase Backup: The Powerwall 3 only supports single-phase backup. This setup is fine for most homes but may be a limitation for larger households with three-phase systems.
Suggested Use:
The Powerwall 3 is ideal for homeowners looking for an affordable, streamlined solution with strong app integration. It’s also a great choice for those interested in Virtual Power Plants.
If you’d like to learn more about Tesla products, we recommend you check out the following article titled, Tesla Powerwall 3 Review: An In-Depth Look at Tesla’s New Solar Battery.
Enphase IQ Battery 5P
Overview:
The Enphase IQ Battery 5P is designed to provide reliable energy, especially when paired with an Enphase microinverter system.
One of its standout features is its warranty: the IQ Battery comes with an impressive 15-year warranty, which is longer than any other battery currently available in Australia.
Specifications
- Capacity: 5kWh
- Scalability: Expandable by 5kWh increments.
- Power Output: Delivers 3.84kW continuous power, with the ability to reach peak power output of 7.68kW.
- Operating Temperature: -20°C to 55°, indoor and outdoor rated.
- Dimensions: 980 mm x 550 mm x 188 mm.
- Weight: 66.3kg
- Mounting: Pedestal or wall mounting.
Key Benefits:
Long Warranty: The IQ Battery’s 15-year warranty is unmatched in the industry. This extended warranty means Enphase is confident that the battery can provide consistent energy storage for over a decade and a half.
Reliable Performance: Unlike most batteries, the IQ Battery has no single point of failure. It contains six microinverters inside it, so if one microinverter fails, the battery continues working. Technicians can perform a field replacement of the faulty microinverter to restore the system to full capacity without impacting the entire battery.
Compact Design: The Enphase IQ Battery 5P is a small-capacity battery with powerful output, making it a good option for households that don’t need extensive storage but want high-quality performance and reliability.
Pros and Cons:
Pros:
- Longest warranty in the industry at 15 years, ensuring reliable performance.
- Built-in redundancy with multiple microinverters, preventing full system failure.
Cons:
- Limited Capacity: With a capacity of 5kWh, this battery may not be suitable for large households with high energy needs unless combined with multiple units.
- Higher Price Point: Due to its advanced features and durability, the Enphase IQ Battery 5P costs more upfront than some other batteries.
Suggested Use:
The Enphase IQ Battery 5P is an excellent choice for homeowners looking for long-term reliability and a high-quality system that’s built to last. Its extended warranty and lack of a single point of failure make it a solid choice. This battery is best for households with moderate energy needs that want a reliable solution.
If you’re interested in learning a bit more about IQ Batteries, you might want to check out the following article titled, Top 10 Features of the Enphase IQ Battery 5P.
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Sungrow Hybrid Battery
Overview:
Sungrow’s hybrid battery system is known for its modular, stackable design, allowing you to customise the battery size based on your energy needs. Sungrow has spent over a decade refining its product, and the hybrid battery benefits from this focus on quality.
Sungrow batteries are also more affordable than many other options, making them popular with budget-conscious buyers.
Specifications
- Capacity: 3.2kWh per module.
- Scalability: Expandable by 3.2kWh increments, up to 8 modules at 25.6kWh.
- Power Output: Delivers 3.84kW continuous power, with the ability to increase as you scale up with multiple modules.
- Operating Temperature: -20°C to 50°, indoor and outdoor rated.
- Dimensions: 625 mm x 545 mm x 330 mm for three modules.
- Weight: 114kg for three modules.
- Mounting: Floor stand.
Key Benefits:
Affordability: Sungrow batteries are competitively priced, offering a balance of performance and cost.
Three-Phase Compatibility: Sungrow’s hybrid inverter solution supports three-phase power, which is useful for homes with higher energy demands or specific appliances that require three-phase power.
Easy Installation: Sungrow’s modular design makes it simple to add more storage as needed, so you don’t need to worry about replacing the whole system if your energy needs increase.
Pros and Cons:
Pros:
- Cost-effective, making it accessible to more homeowners.
- Three-phase support for larger homes and high-demand appliances.
- Modular design allows for flexible upgrades.
Cons:
- Long-Term Durability Uncertain: While Sungrow has a good reputation, there are questions about how their products will hold up compared to higher-end brands.
- Limited Warranty: Sungrow’s warranty (10 years) is shorter than Enphase’s, which may be a drawback for those looking for a long-term investment.
Suggested Use:
Sungrow’s hybrid battery is perfect for budget-conscious homeowners who need flexibility and three-phase power support. It’s a solid option for households that want reliable energy storage without the high upfront cost of premium brands.
If you’re interested in learning a bit more about solar batteries, you might want to start with the following article titled, Adding a Battery to a Solar System.
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BYD Battery with Fronius Gen24 Inverter
Overview:
The BYD battery, paired with the Fronius Gen24 inverter, is another modular, stackable system that’s gaining popularity. BYD and Fronius have combined their strengths to create a solution with three-phase backup capability, making it one of the few options available with this feature.
Specifications
- Capacity: 5.12kWh for the first two modules, then scale up by 2.56kWh per module.
- Scalability: Expandable by 2.56kWh increments, up to 8 modules at 22.08kWh.
- Power Output: Delivers 5.1kW continuous power, with the ability to increase as you scale up with multiple modules.
- Operating Temperature: -10°C to 50°, indoor and outdoor rated.
- Dimensions: 712 mm x 585 mm x 298 mm for two modules.
- Weight: 91kg for two modules.
- Mounting: Floor stand.
Key Benefits:
Three-Phase Backup: The BYD-Fronius combo offers three-phase backup, which many other batteries lack. Of course, batteries don’t store energy in phases, but once the DC electricity is converted to AC electricity, which has phases, is three-phase backup a possibility. This feature is helpful for homes that use a three-phase setup for appliances and homeowners who want true three-phase backup.
Stackable Design: Like Sungrow, BYD’s design allows you to add more battery storage as needed.
High-Performance Combination: BYD’s battery chemistry paired with Fronius’s inverter provides high performance and compatibility with various solar setups.
Pros and Cons:
Pros:
- True three-phase backup, rare in the solar battery market.
- Modular design allows you to customise your storage capacity.
Cons:
- High Upfront Cost: The BYD-Fronius setup can be expensive, especially when compared to simpler setups.
- Three-Phase Backup Limitations: While it offers three-phase backup, it may not be able to power every high-demand appliance during an outage.
Suggested Use:
The BYD with Fronius inverter is a good fit for households needing three-phase backup and modular flexibility. It’s well-suited to homes with high energy use or three-phase appliances that require reliable power during outages.
If you’re interested in learning a bit more about the benefits of solar batteries, you might want to start with the following article titled, 7 Benefits of Adding a Battery to Your Solar System.
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Up-and-Coming Battery: Sigenergy
Overview:
The Sigenergy battery is an emerging product that integrates AI technology and smart app features, setting it apart from other batteries on the market. Sigenergy, a tech-focused company, designed this battery to provide a smarter, more interactive energy storage experience.
The battery was introduced at the All-Energy Expo in Melbourne in 2024, where it quickly became one of the most talked-about products.
Specifications
- Capacity: 8kWh for battery/controller, then scale up to 48kWh with six modules.
- Scalability: Expandable by 8kWh increments, up to 6 modules at 48kWh.
- Power Output: 4kW.
- Operating Temperature: -25°C to 60°, indoor and outdoor rated.
- Dimensions: 767 mm x 270 mm x 260 mm.
- Mounting: Floor stand or wall-mounted.
Key Benefits:
AI Integration: The Sigenergy app uses AI (including ChatGPT) to answer questions about your energy use, battery performance, and more. This smart integration makes it easy to monitor and optimise your energy storage.
Fast DC Car Charging Option: The battery has a 25kW fast DC car charger module, allowing for rapid electric vehicle charging straight from your battery or solar panels.
High-Tech User Experience: The Sigenergy app offers a seamless experience, helping users manage their energy use in an intuitive way.
Pros and Cons:
Pros:
- Cutting-edge AI features and interactive app.
- DC fast charging for EVs.
- Stackable design for scalable energy storage.
Cons:
- Unproven in the Market: As a new product, the battery doesn’t have a long track record, which may make some buyers cautious.
- High-Tech Features May Not Appeal to Everyone: The advanced features may be overkill for homeowners looking for simple energy storage.
Suggested Use:
The Sigenergy battery is ideal for tech-savvy homeowners interested in high-tech energy management and fast EV charging. It’s also a good fit for those looking to invest in innovative technology and stay ahead of energy trends.
If you’re interested in learning a bit more about what you can use as a solar battery, you might want to check out the following article titled, 7 Alternatives to a Solar Battery in Your Home.
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Which Solar Battery is Right for You?
Choosing the best solar battery depends on your specific needs:
- If you want ease of use and affordability, the Tesla Powerwall 3 is a great choice with strong app support and quick installation.
- For long-term value and safety, Enphase IQ Batteries offer unmatched durability and monitoring features.
- If you need three-phase support on a budget, Sungrow’s hybrid battery is flexible and modular.
- For homes that require robust three-phase backup, the BYD-Fronius combination provides strong performance.
- If you’re a tech enthusiast, the Sigenergy battery’s AI features and fast EV charging make it a forward-thinking option.
At Penrith Solar Centre, we understand what’s new and exciting when it comes to solar batteries. Every home has unique needs, so finding the right battery with the right features can make quite a difference in your energy usage (and ultimately, your bank account). We’re here to help with that.
If you’re interested in learning a bit more about the upcoming solar battery rebate, you might want to check out the following article titled, Everything You Need to Know About the Home Battery Rebate for NSW.
