EQ4800
9.32–41.93 kWh, in 4.66 kWh modules
The mainstream modular high-voltage system — stack to the capacity, don’t round to a package.
Australia-wide
Fox ESS battery installers in Australia
Get matched with top solar companies in Australia
- Fox ESS EQ battery modules let you size your storage to your electricity use
- Unlock up to $7,000 in federal solar + battery rebates*
- Compare quotes from vetted installers, with Fox ESS experience where available
Fox ESS
What could a Fox ESS battery save your home?
*For eligible combined solar and battery installations before January 2027. Battery-only rebates vary with usable capacity. Your installer confirms eligibility and amount.
✓ Up to 3 vetted installers
✓ Free to compare, no obligation
✓ Your chosen battery, your quote request
Meet Fox ESS A wide range of modular batteries, so your system can match your home closely.
- A size for nearly any home
Fox ESS sells six home battery families, from 4.66 kWh modules to almost 98 kWh, to fit most homes.
- Stack in 5.46 kWh modules
EQ5500 builds from 10.92 kWh to 49.14 kWh in 5.46 kWh modules, so capacity lands close to what you need.
- Use every kWh it holds
Rated for 100% depth of discharge, so the full stated capacity is there for your home to use.
- Covered 10 years, rebate-listed
EQ5500 and EQ4800 carry 10-year warranties, and both stack families are on the approved battery list for the rebate.
Fox ESS states 70% battery retention at 10 years for EQ4800.
The company behind it
Fox ESS is a Wenzhou-based maker of inverters, batteries and EV chargers, founded in 2019.
Founded 2019
Fox ESS was established in 2019, with global headquarters in Wenzhou, China.
2,000,000+ batteries
Fox ESS says it has installed over 2,000,000 batteries globally in the past three years.
Melbourne and Sydney offices
Fox ESS entered Australia in 2021 and supports products from offices in Melbourne and Sydney.
Want a Fox ESS battery on your home?
Get my Fox ESS quotesCompare up to 3 vetted installers. Free, no obligation.
We pick them, nobody bids
Request a match with up to 3 approved installers. Current availability, campaign geography and brand suitability are checked for your enquiry.
Check the installation credentials
Ask each installer for their workmanship warranty, trading history and current brand credentials before you decide.
Rebates at quote
The federal Cheaper Home Batteries discount — roughly a quarter off installed cost — plus your state layer, applied upfront at quote.
Find Fox ESS installers near you.
Each state page lists its capital and regional centres, the battery rebate stack for that state, and the installers we match you with there. Not listed? Matching runs on postcode, so enter yours anyway.
- New South Wales — 13 locations
- Victoria — 8 locations
- Queensland — 12 locations
- Western Australia — 3 locations
- South Australia — 2 locations
- Tasmania — 2 locations
- Northern Territory — 2 locations
- Australian Capital Territory — 1 location
Is Fox ESS right for your home? Fit and warranty checks
A good fit if…
- Households that want capacity matched precisely rather than rounded up to a package
- Larger homes needing 20 kWh and beyond without stepping into commercial hardware
- Buyers comparing on price per usable kilowatt-hour
- New solar-plus-storage installs where the matching hybrid inverter is a feature rather than a conflict
Consider the limitations
- You want the longest Australian field record — Fox’s volume is recent, and longevity data follows time, not shipments
- You are keeping an existing inverter you like, which points to an AC-coupled system instead
- Virtual-power-plant income is central to your plan and your preferred program does not list the model
- You would rather choose from two products than from a dozen closely named ones
The Fox ESS range
EP11 / EP12
10.36–46.08 kWh
Fixed-block high-voltage units that scale by adding units in parallel rather than modules.
CQ6 / CQ7
11.98–98.28 kWh
The large-format end — big homes, light commercial, three-phase properties.
Fox ESS specifications and source documents
Fox ESS has gone from niche to everywhere in about three years, and the range shows why: a long list of high-voltage modular families — EQ, EP and the larger CQ — that lets an installer land almost exactly on the capacity a home needs rather than rounding to the nearest package. The EQ4800 is the mainstream choice, built from 4.66 kWh modules that stack from roughly 9 kWh to 42 kWh, with the full nominal capacity usable. It is a volume play rather than a prestige one, and the trade-off is a support and installer-experience record that is real but young.
Fox ESS questions, answered
- Fox ESS grew very fast — is that a good sign or a warning?
- Both. Rapid growth in this market usually means the product is priced well and installers find it easy to work with, and the customer ratings back that up. What growth cannot manufacture is time: eight-year field behaviour is only knowable after eight years, and no brand that scaled recently has it. The practical hedge is not avoiding the brand, it is making sure the support chain and your installer will still be there — ask who handles a warranty claim in year six and get the answer in writing.
- What does “100% depth of discharge” actually mean for me?
- It means the nominal capacity and the usable capacity are close to the same number, so a 9.32 kWh figure is roughly what you can actually draw rather than a headline you discount by ten or fifteen per cent. It matters most when comparing quotes: if one brand quotes nominal and another quotes usable, you are not comparing like with like. Ask every quote for the usable figure and compare those.
- Which Fox ESS model should I be quoted?
- For most homes the EQ4800 is the sensible starting point — it is the modular one, so capacity can be matched now and extended later. EP units suit homes wanting a fixed block without module-level sizing, and the CQ range is for large properties or light commercial. The wrong question is “which is best”; the right one is which matches your evening load and your expansion plans, which is a sizing conversation your installer should lead with numbers.
- Can I add more capacity to a Fox ESS system later?
- On the modular EQ range, yes — within the headroom the original design left. That is the catch worth understanding at quote time: the inverter rating and the enclosure both set a ceiling, and a system built right to that ceiling cannot grow without replacing hardware. If you think you might add an EV or a pool in a few years, say so before the design is finalised, not after.
- Is Fox ESS eligible for the federal battery rebate?
- Eligibility runs model-by-model through the Clean Energy Council approved battery list, and Fox ESS models do appear on it — but the list changes and the variant names are close together, so a general yes is not good enough. Have the installer show you the exact quoted model on the current list before you sign anything.
- Does a Fox ESS battery keep the house running in a blackout?
- A correctly configured system holds up the circuits wired to its backup side, and with 20 kWh or more available most homes run their essentials through an evening comfortably. What decides your experience is design rather than brand: which circuits are on the backup side, whether the changeover is automatic, and how the system behaves as the stack drains. Get that scope written into the quote instead of accepting “it has backup”.
- Why is Fox ESS usually cheaper than the big-name brands?
- Volume manufacturing and a deliberate price position, mostly — the same reason its market share climbed. That is a legitimate saving rather than a hidden compromise on chemistry, since the range uses the same lithium iron phosphate cells as most of the market. What you are trading is track record and ecosystem polish, not safety. Whether that trade suits you depends on how much you value a long field history versus a lower cost per usable kilowatt-hour.