Fox ESS Battery Review Australia: Usable Capacity, Power, and Warranty
Updated 6 September 2026 · By SolarNevs Research Desk, Dealer surveys + verified sources · 1 source · Method ↗
Key Takeaways
- Fox ESS offers three main battery series in Australia: EQ, EP, and CQ6, each with varying capacities and features.
- All Fox ESS battery series are approved by the Clean Energy Council (CEC), which is essential for rebate eligibility.
- Warranty terms range from 10 to 12 years, with conditions for capacity retention or minimum energy throughput.
- The EQ and EP series lack built-in fire suppression, while the CQ6 series includes an aerosol fire extinguishing device.
Understanding Fox ESS Batteries for Australian Homes
Fox ESS, a subsidiary of the Tsingshan Group, offers a range of battery energy storage systems in Australia. These systems are designed for residential applications, aiming to help homeowners store excess solar energy for later use, reduce reliance on the grid, and potentially benefit from grid services. This review focuses on the usable capacity, power output, warranty terms, CEC approval status, and available pricing information for Fox ESS EQ, EP, and CQ6 series batteries, as reported by Australian installer and comparison sites.
When considering a battery, it is important to understand that eligibility for Australian battery rebates often depends on the product being approved by the Clean Energy Council (CEC). You can learn more about the specific requirements in our guides on Australian Battery Rebate Explainer and Australian Battery Rebate Eligibility.
Fox ESS Battery Series Overview
Fox ESS provides several battery series, each with distinct characteristics regarding capacity, power, and safety features. The information below is sourced from Australian review sites, which provide local context and pricing estimates.
Fox ESS EQ Series
The EQ series batteries are based on lithium iron phosphate (LiFePO4) chemistry and are designed for modular expansion.
Feature | Detail |
|---|---|
Usable Capacity | 4.66 kWh per module, up to just under 42 kWh in one stack |
Power Output | Depends on the paired inverter, up to 10 kW single phase |
Depth of Discharge (DOD) | 100% Depth of discharge |
Warranty | 10-year product and performance warranty, guaranteeing 70% end-of-warranty capacity or a minimum energy throughput limit |
CEC Approved | Approved by the Clean Energy Council |
Ingress Protection | IP65 |
Cooling | Natural convection (fan-free) |
Safety | Lacks built-in fire suppression |
Estimated Installed Price | An 18.64 kWh EQ4800 stack may cost AUD 15,000–16,000 installed |
The EQ4800 model, for example, has a nominal capacity of 10.36 kWh and a minimum energy throughput of 38.4 MWh.
Fox ESS EP Series
Similar to the EQ series, the EP series also uses lithium iron phosphate (LiFePO4) chemistry and offers flexible capacity.
Feature | Detail |
|---|---|
Usable Capacity | EP11 model has 10.36 kWh usable capacity |
Power Output | Depends on the paired inverter, up to 10 kW single phase |
Depth of Discharge (DOD) | 100% DOD |
Warranty | 10-year product and performance warranty, guaranteeing 70% end-of-warranty capacity or a minimum energy throughput limit |
CEC Approved | Approved by the Clean Energy Council |
Ingress Protection | IP65 |
Cooling | Natural convection (fan-free) |
Safety | Lacks built-in fire suppression |
Estimated Installed Price | A 10.4 kWh EP11 system may cost AUD 8,650–9,200 installed |
The EP11 model has a nominal capacity of 18.64 kWh and a minimum energy throughput of 78.64 MWh.
Fox ESS CQ6 Series
The CQ6 series represents a newer offering from Fox ESS, featuring LFP (LiFePO4) chemistry and enhanced safety features.
Feature | Detail |
|---|---|
Usable Capacity | 5.99 kWh modules, stackable from 11.98 kWh (L2) to 83.86 kWh (L14) |
Rated DC Power | 5.76–40.32 kW, depending on configuration |
Depth of Discharge (DOD) | 100% depth of discharge |
Warranty | 12-year product and performance warranty, guaranteeing 70% end-of-warranty capacity or a minimum energy throughput limit |
CEC Approved | Approved by the Clean Energy Council |
Ingress Protection | IP65 rated |
Safety | Built-in aerosol fire extinguishing device module, thermally activated at 170°C |
Estimated Installed Price | A 23.9 kWh Fox ESS CQ6 package publicly advertised between AUD 8,500 and AUD 9,000 installed (after rebates) |
Specific models within the CQ6 series include:
- CQ6-L2: 11.96 kWh nominal capacity, 60.28 MWh minimum energy throughput.
- CQ6-L4: 23.92 kWh nominal capacity, 120.56 MWh minimum energy throughput.
- CQ6-L14: 83.72 kWh nominal capacity, 421.96 MWh minimum energy throughput.
What You Can Check Yourself, and What You Cannot
As a homeowner, you can review the specifications of Fox ESS batteries to determine if they meet your energy storage needs. This includes checking the usable capacity, power output, and warranty terms. You can also verify if the specific model you are considering is listed on the Clean Energy Council's approved battery list, which is crucial for accessing rebates.
However, any installation, maintenance, or troubleshooting of a battery system must be performed by an accredited installer. Attempting to modify or repair the system yourself can void warranties, create safety hazards, and potentially breach your connection agreement with the electricity network. If you experience issues such as your inverter shutting down on sunny days, which can affect battery charging, it is best to consult a professional. For more information on common issues, refer to our guide on Inverter Shutting Down on Sunny Days Grid Voltage Australia.
What the Published Sources Do Not Tell You
While Australian review sites provide valuable insights and estimated pricing, they often do not include the full manufacturer's datasheet or detailed warranty documents. This means specific technical details, such as exact operating temperature ranges, communication protocols, or comprehensive installation guidelines, may require consulting the manufacturer's official documentation, which was not directly available in the sources we checked for Fox ESS.
Additionally, the exact final installed price of a battery system can vary significantly based on your specific installer, location, installation complexity, and any available state or local incentives beyond the federal rebates. The advertised prices are estimates and may not include all potential costs or account for individual household circumstances. Furthermore, while the CQ6 series includes fire suppression, the specific details of its operation and maintenance are not elaborated in the review sources.
Frequently asked questions
Are Fox ESS batteries approved for Australian rebates?
Yes, Fox ESS EQ, EP, and CQ6 series batteries are approved by the Clean Energy Council (CEC), which is a requirement for most Australian battery rebates. Eligibility for rebates also depends on other factors, such as system size and household income.
What is the warranty for Fox ESS batteries in Australia?
Fox ESS EQ and EP series batteries come with a 10-year product and performance warranty, ensuring 70% end-of-warranty capacity or a minimum energy throughput limit. The CQ6 series offers a 12-year product and performance warranty with the same capacity retention or energy throughput conditions.
What is the usable capacity of Fox ESS batteries?
Fox ESS offers various usable capacities. The EQ series provides 4.66 kWh per module, stacking up to just under 42 kWh. The EP11 model has 10.36 kWh usable capacity. The CQ6 series offers 5.99 kWh modules, allowing stacks from 11.98 kWh to 83.86 kWh.
Do Fox ESS batteries have built-in fire suppression?
The Fox ESS EQ and EP series batteries lack built-in fire suppression. However, the CQ6 series includes a built-in aerosol fire extinguishing device module, which is thermally activated at 170°C.
What is the estimated installed cost of a Fox ESS battery system in Australia?
Estimated installed costs vary by model and system size. A 10.4 kWh EP11 system may cost AUD 8,650–9,200 installed, while an 18.64 kWh EQ4800 stack could be AUD 15,000–16,000 installed. A 23.9 kWh CQ6 package has been publicly advertised between AUD 8,500 and AUD 9,000 installed after rebates.
References
- SolarChoice: Fox ESS Battery Review — accessed 26 August 2026
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