FoxESS vs Growatt Battery Comparison (Which Solar Battery Is Better in Australia?)
Solar battery storage is becoming a part of having a modern solar system in Australia. Electricity prices are going up. People want to be independent when it comes to energy. So a lot of homeowners are now getting solar batteries to go with their panels. FoxESS and Growatt are two battery brands in Australia that are not too expensive. Both FoxESS and Growatt offer lithium battery systems that can store solar energy and power your home at night.. Which one is better for homes in Australia?
In this detailed guide, we compare FoxESS vs Growatt batteries based on performance, price, safety, warranty, and suitability for Australian homes. If you’re planning to install solar battery storage in Australia, this guide will help you choose the right system for your needs.
Why Battery Choice Matters in the Australian Market
A battery system is not just about storage capacity; it is about how well the Battery Management System (BMS) can handle these conditions. In comparing foxess vs growatt, it is not just about comparing the metal boxes; it is about comparing the intelligence inside those boxes. At Eco Aspire Energy, we are about:
- Safety: Fire resistance and thermal stability.
- Longevity: Cycle life that matches the lifespan of your solar panels.
- Compatibility: Seamless integration with your existing or new inverter.
- Support: Local warranty support within Australia.
FoxESS Battery Overview
Fox ESS is becoming a trusted name in Australia’s renewable energy sector. Since entering Australia in 2022, Fox ESS has established a national support team to deliver prompt local technical support for customers and installers across Australia. Their popular products, such as the EQ4800 and EP11 battery series, are designed to fit Australia’s 50 kWh rebate cap, helping customers make the most of government incentives and offering storage capacity up to 41.93 kWh. With engineering support available across Australia’s major cities and being a BNEF Tier 1 Energy Storage Manufacturer, Fox ESS is becoming a trusted name for solar battery storage.
Key Features of FoxESS Batteries:
- Lithium Iron Phosphate battery chemistry
- 95% round-trip efficiency
- Modular expansion up to 40+ kWh
- 6,000+ cycle lifespan
- 10-year warranty
- IP65 outdoor protection
Read our full review
Growatt Battery Overview
Growatt is a renowned Chinese company specializing in the manufacture of solar inverters. The company has a wide presence worldwide. Growatt specializes in the manufacture of solar inverters, EV chargers, and battery storage products. Growatt battery products are designed to integrate with Growatt hybrid inverters. The features of Growatt battery products include high energy density, operating temperature, and safety features such as relevant protection devices and Battery Management System (BMS).
Key Features of Growatt Batteries:
- Lithium Iron Phosphate battery technology
- Modular battery design
- Outdoor rated (IP66 protection)
- Capacity range from around 5 kWh to 40 kWh
- 10-year product warranty
Read our full review
Technical Specifications
When analyzing foxess vs growatt, the technical specs are where the rubber meets the road. Here is a detailed breakdown of the key metrics that affect your daily energy usage.
- Battery Chemistry: LFP vs. NMC
The most critical difference lies in the chemistry.- Foxess: Primarily uses LFP (Lithium Iron Phosphate). LFP is considered safer than NMC (Nickel Manganese Cobalt) because it is more thermally stable and less prone to thermal runaway. It also typically offers a longer cycle life.
- Growatt: Offers both LFP and NMC options depending on the specific model (e.g., the Growatt SPF series often uses LFP, while older or specific commercial models may use NMC).
- Depth of Discharge (DoD)
DoD refers to how much of the battery’s capacity you can actually use.- Foxess: Typically offers a 100% usable capacity on their newer models. This means if you buy a 10kWh battery, you can use the full 10kWh.
- Growatt: Often offers around 90% to 95% usable capacity depending on the model.
- Round-Trip Efficiency
This measures how much energy you lose when charging and discharging the battery.
- Foxess: Generally boasts an efficiency of 95% or higher.
- Growatt: Typically sits around 90% to 93%.
- Cycle Life
Cycle life is the number of charge/discharge cycles a battery can handle before its capacity degrades significantly (usually to 80% of original).
- Foxess: Rated for 6,000+ cycles at 80% DoD.
- Growatt: Rated for 4,000 to 6,000 cycles depending on the specific battery model.
- Foxess: Rated for 6,000+ cycles at 80% DoD.
FoxESS vs Growatt: Quick Overview
Feature | FoxESS Battery | Growatt Battery |
Battery Chemistry | LFP (Lithium Iron Phosphate) | LFP / NMC Options |
Typical Capacity | 2.5 kWh – 40+ kWh | 5 kWh – 40 kWh |
Usable Capacity | 100% | 90-95% |
Efficiency | ~95% | ~90-93% |
Cycle Life | 6,000+ Cycles | 4,000-6,000 Cycles |
Warranty | 10 years | 10 years |
Installation | All-in-One Hybrid Option | Modular System |
Price Point | Mid-High | Mid-Low |
Best For | New Installations, Efficiency | Existing Growatt Systems, Budget |
Both brands offer modular battery systems, meaning homeowners can start with a smaller battery and expand later if energy needs increase.
FoxESS battery vs Growatt battery: Price in Australia
In Australia, the Fox ESS battery price varies depending on the system size and supplier, making it flexible for both residential and small business energy storage needs. The Fox ESS EQ Series uses modular 4.6 kWh battery units, allowing homeowners to scale the system as their energy demand grows. A 9.32 kWh Fox ESS battery costs around AUD $7,805, while an 18.64 kWh system is approximately AUD $10,305. For larger storage capacity, a 23.30 kWh battery is about AUD $12,225, and a 27.96 kWh system costs roughly AUD $13,475. Higher-capacity options include the 32.62 kWh battery at around AUD $15,225 and the 41.9 kWh Fox ESS battery for approximately AUD $18,225.
Growatt batteries are available at affordable prices and are ideal for homeowners who already have a compatible hybrid inverter or plan to install one. In Australia, the 10 kWh Growatt battery costs around AUD $9,125, while the 15 kWh version is about AUD $10,700. Larger systems include the 20 kWh battery at approximately AUD $12,275, 25 kWh at AUD $14,100, and 30 kWh at around AUD $15,675. For higher energy storage needs, the 40 kWh Growatt battery costs about AUD $23,670, and the 50 kWh system is around AUD $27,120, typically used with three-phase installations. These batteries help homeowners store solar energy, reduce electricity bills, and provide backup power during outages.
📋Note: Prices listed are without any government rebates. In Australia, rebates may apply, and to know the exact battery price with rebate, please contact us directly.
Which Battery Is Better for Australian Homes?
When comparing the two, both FoxESS and Growatt are reliable and cost-effective energy storage solutions for Australian households. However, each has its advantages and disadvantages.
For households looking for energy storage solutions with high efficiency and scalability, FoxESS would be the best choice. This is because the FoxESS EQ4800 and EP11 series are modular, making them easily expandable up to 41.9kWh, which falls within the Australian government’s 50kWh rebate threshold. Additionally, FoxESS has engineers located in key cities such as Melbourne, Sydney, Brisbane, Adelaide, and Perth, making them easily accessible for technical support.
On the other hand, Growatt energy storage solutions would be the best choice for households with existing or intending to install Growatt hybrid inverters. This is because Growatt offers energy storage solutions ranging from 10kWh to 50kWh, providing reliable energy storage, cost savings on electricity, and backup power during outages.
Based on the analysis, the best energy storage solution between the two would depend on the energy requirements of the household and the existing solar system configuration. For households looking for energy storage solutions with high efficiency and scalability, FoxESS would be the best choice.
Ultimately, the best battery depends on:
- Your energy usage
- Budget
- Solar system configuration
- Installer recommendations
Need Help Choosing the Right Solar Battery?
In Australia, you must use a CEC-accredited installer. Eco Aspire Energy is fully accredited. At Eco Aspire Energy, we help Australian homeowners choose the best solar battery solutions for their homes.
Our experts can help you compare options like FoxESS, Growatt, Sungrow, and more to find the most efficient and cost-effective system. Contact our team today to get a free solar battery consultation.