Fox ESS is a global solar energy brand founded in 2019, specialising in hybrid inverters and LiFePO₄ battery storage systems. The company is CEC-approved in Australia and provides reliable energy storage solutions for residential solar homes.
Fox ESS batteries feature a modular design with future expandability, making them suitable for households that want to manage their electricity consumption intelligently. These systems store excess energy generated by solar panels during the day so it can be used at night or during peak electricity tariff periods.
If you are looking for a cost-effective, expandable, and high-efficiency battery system that can reduce your dependence on the grid, Fox ESS can be a suitable choice.
Why Choose Fox ESS?
• Modular design with future capacity expansion
• Safe and durable LiFePO4 battery cells
• High efficiency with DC-Coupled system
• IP65 protection rating suitable for indoor or outdoor installation
• Competitive pricing compared to many premium brands
• 10 to 12-year warranty (depending on model)
• Smart monitoring support via mobile app
Fox ESS is suitable for homes planning to install solar and battery systems simultaneously or those intending to expand storage capacity in the future.
Which Home Size & Usage Pattern Suits Fox ESS?
| Household Size | Usage Pattern | Recommended Capacity | Suitable Models |
| 1–2 people | Mostly daytime usage | 5–10 kWh | EQ (1–2 modules) |
| 1–2 people | Mostly nighttime usage | Around 10 kWh | EP11 |
| 3–4 people | Balanced day & night usage | 15–25 kWh | EQ (3–5 modules) |
| 4–5 people | High nighttime usage | 25–40 kWh | CQ6 Stack |
| 5+ people / small business | Heavy continuous load | 40+ kWh | Multiple CQ6 stacks |
Final system sizing should be based on a detailed assessment of electricity consumption, solar production, and future plans such as EV charging.
Price & Value
Fox ESS batteries are considered among the more affordable options in the Australian market. Final pricing depends on system capacity, inverter type, installation conditions, and whether switchboard upgrades are required.
Approximate installed market pricing:
• EQ4800 module (4.66 kWh) – around $832 per usable kWh
• EP11 (10.36 kWh) – approximately $8,650 to $9,200
• CQ6 Series (higher capacities) – from approximately $8,500 and above depending on capacity
If eligible, federal incentives (STCs) may help reduce the upfront cost.
How Fox ESS Benefits Your Home
By installing a Fox ESS battery, your home can store more of the solar energy it generates instead of exporting it to the grid, allowing you to use it when needed.
Benefits include:
• Noticeable reduction in electricity bills
• Increased energy independence
• Use of stored energy during peak tariff periods
• Backup support for essential circuits during power outages (depending on system design)
• Future capacity expansion capability
• Optimized performance through direct DC connection
This means greater control over your energy consumption and protection against rising electricity prices.
Contact Axial Electric for expert solar and battery advice. We’ll tailor a system for your home and handle everything from design to installation.
How It Works – Fox ESS Systems
Fox ESS systems use high-voltage LiFePO4 battery chemistry designed in a modular configuration.
Common series available in Australia:
• EQ Series – 4.66 kWh modules that can be stacked to exceed 40+ kWh
• EP Series – integrated units such as EP11 with approximately 10 kWh capacity
• CQ6 Series – high-voltage systems expandable to larger capacities
These batteries operate with compatible hybrid inverters, converting, storing, and distributing solar energy with minimal losses.
Monitoring & Maintenance
Fox ESS provides full monitoring and smart energy management through a mobile application and web portal.
With this system you can:
• View real-time solar production
• Check battery charge and discharge status
• Monitor household consumption and grid import/export
• Analyse daily, weekly, and monthly reports
• Receive system alerts
• Enable remote diagnostics by technicians
• Receive software updates
This application helps you better manage your consumption patterns and maximize savings.
Fox ESS Technical Specifications
| Feature | EQ4800 | EP11 | CQ6 Series |
| Battery Type | LiFePO4 | LiFePO4 | LiFePO4 |
| Usable Capacity | 4.66 kWh per module | 10.36 kWh | Varies by stack |
| Depth of Discharge | 100% | 100% | 100% |
| Efficiency | >95% | >95% | >95% |
| Protection Rating | IP65 | IP65 | IP65 |
| Operating Temperature | -10 to 55°C | -10 to 55°C | -10 to 55°C |
For exact specifications, always refer to the official datasheet of each model.
Smart Considerations Before Choosing Fox ESS
Before purchasing, consider:
• Inverter compatibility with DC-Coupled systems
• Household nighttime consumption
• Future plans such as EV charging
• Installation space and ventilation
• Warranty conditions and product registration requirements
Correct sizing ensures maximum return on investment.
About Fox ESS – Emerging Global Energy Brand
With a focus on modular systems and competitive pricing, Fox ESS has rapidly gained a significant share of the global energy storage market. The integration of inverter and battery within a coordinated ecosystem is one of the brand’s key strengths.
Find Your Exact Price
To receive an accurate quote tailored to your home:
• Assess your electricity consumption
• Review your existing solar system
• Determine optimal battery capacity
• Calculate estimated annual savings
Contact our Axial Electric experts for a free consultation and personalised quote. We specialise in designing solar and battery systems that suit your home, handle all the details from system design to rebates, and ensure smooth installation.
Still deciding? Take a look at the Sofar and SolaX as well, compare all the brands we install, and if you have already got solar, find out how to add a battery to it.
FAQs
How much power output does a Fox ESS battery provide?
Output depends on the model and stack size. EQ and CQ6 stacks can handle higher loads; EP11 suits standard household evening use.
How long do Fox ESS batteries last?
LiFePO₄ chemistry ensures 10–12 years lifespan, with 10–12 year warranty depending on the model.
How much space does a Fox ESS battery take?
Modular design allows stacking; EP11 is compact; CQ6 towers require more floor space. Exact size depends on the number of modules.
How much does a Fox ESS battery cost in Melbourne?
EP11 costs around $8,650–$9,200; larger EQ/CQ6 systems cost more depending on capacity and installation. STCs may reduce upfront cost.
Can Fox ESS batteries provide backup power during outages?
Yes, when configured with a compatible hybrid inverter, they can power essential circuits like lights and fridge.
Can I expand my Fox ESS battery in the future?
Yes, EQ and CQ6 systems are modular, allowing additional modules to be added later.
What is the usable capacity of Fox ESS batteries?
100% Depth of Discharge ensures nearly all rated capacity is available for use.
Are Fox ESS batteries suitable for Melbourne weather conditions?
Yes, they operate between -10°C to 55°C and have IP65 rating for indoor or protected outdoor installation.
How efficient are Fox ESS battery systems?
They offer >95% round-trip efficiency with DC-coupled architecture to minimise energy conversion losses.
Is Fox ESS a good value compared to premium brands?
Yes, they provide modularity, strong performance, CEC approval, and competitive pricing for cost-conscious homeowners.
Comparing battery brands? Read our guides to Sofar, SolaX and Sigenergy solar batteries.
