FoxESS EQ4800 vs CQ6 vs CQ7. Same platform, different density.
These three aren't rivals — they're the same brand, on the same high-voltage LFP platform, running the same FoxESS hybrid inverter family. So the real question isn't "which is best". It's which module density actually fits your home and budget — and why chasing the biggest number on a quote is usually the wrong call.
Reviewed by the Mission Green Energy Team · Updated July 2026
How do the EQ4800, CQ6 and CQ7
actually differ?
All three wear the FoxESS badge, all use safe LFP cells, all offer 100% usable depth of discharge and all pair with a FoxESS H3 or KH hybrid inverter. What changes across the range is module size — and therefore how much capacity each one packs before you run out of stack. It's density, not quality.
The established workhorse. HV stackable 4.66 kWh LFP modules, 2 to 9 per stack for 9.32–41.93 kWh usable. Around a 6,000-cycle life and a 10-year product warranty to 70% retention — the lowest proven entry point in the range.
Higher density. 5.99 kWh modules, 2 to 14 per stack for 11.98–83.86 kWh usable, with over 95% round-trip efficiency and a 12-year warranty — at the longer end for Australian home batteries. The sensible default for typical-to-large homes.
Newest, highest density. 6.98 kWh HV modules for 13.92–97.44 kWh usable per stack, aimed at large homes, heavy EV charging or three-phase. Its 12-year warranty is provisional as the newest series, and availability is worth confirming.
How do the specs
compare, head to head?
| Feature | FoxESS EQ4800 | FoxESS CQ6 | FoxESS CQ7 |
|---|---|---|---|
| Usable Capacity | 9.32–41.93 kWh per stack | 11.98–83.86 kWh per stack | 13.92–97.44 kWh per stack |
| Module Size | 4.66 kWh (2–9 modules) | 5.99 kWh (2–14 modules) | 6.98 kWh (V6M master + S slaves) |
| Chemistry | LFP (Lithium Iron Phosphate) | LFP (Lithium Iron Phosphate) | LFP (Lithium Iron Phosphate) |
| Depth of Discharge | 100% | 100% | 100% |
| Round-trip Efficiency | High-efficiency LFP | Over 95% | High-density LFP |
| Cycle Life | ~6,000 cycles | Not published — confirm with FoxESS | Not published — confirm with FoxESS |
| Warranty | 10 years (70% retention) | 12 years (70% retention) | Provisional 12 years (70% retention) |
| Architecture | High-voltage stackable | High-voltage stackable | High-voltage stackable |
| Inverter Pairing | FoxESS H3 / KH hybrid | FoxESS H3 / KH hybrid | FoxESS H3 / KH hybrid |
| VPP-Ready | Yes (via H3 / KH inverter) | Yes (via H3 / KH inverter) | Yes (via H3 / KH inverter) |
| CEC Approved | Yes | Yes | Yes |
| Best For | Modest daily-cycling homes | Typical-to-large homes wanting headroom | Large homes / heavy EV / three-phase |
FoxESS EQ4800
in detail.
The established workhorse of the range. Proven, modest, and for a lot of homes, exactly enough — which is the whole point of putting it first.
Proven Modules
HV stackable 4.66 kWh LFP modules, 2 to 9 per stack for 9.32–41.93 kWh usable. Around a 6,000-cycle life — the only figure FoxESS publishes across these three — means it will cycle daily on solar for years.
Lowest Entry Point
100% usable depth of discharge and a 10-year product warranty to 70% capacity retention. It's the lowest-cost way into FoxESS storage, so you're not paying a density premium for capacity you may never discharge.
Room to Grow
Start with two modules and add more as your usage changes, up to nine per stack. Because it's high-voltage stackable on the same H3 or KH inverter, expanding later is straightforward rather than a rebuild.
Best suited for: Modest daily-cycling homes that want to store the day's solar and run the evening on it — where the goal is covering your load, not maxing out a spec sheet. If that's you, the EQ4800 is often the honest answer.
FoxESS CQ6
in detail.
Higher density and the longest warranty of the three — which is why, for typical-to-large homes wanting some headroom, it's the sensible default.
Denser Modules
5.99 kWh LFP modules stack 2 to 14 per string for 11.98–83.86 kWh usable. That gives you room for a bigger evening load plus some EV charging without stepping up to the largest series in the range.
12-Year Warranty
A 12-year product warranty to 70% capacity retention — at the longer end for Australian home batteries, and two years longer than the EQ4800. Paired with over 95% round-trip efficiency, very little stored solar is lost.
Australian-Launched
Launched in Australia in early 2026, the CQ6 is a current-generation battery on the established FoxESS platform, not a brand-new unknown. It carries the same 100% depth of discharge and CEC approval as the rest of the range.
Best suited for: Typical-to-large homes that want genuine headroom — a bigger evening load, some EV charging, a growing family — and value the longest warranty in the range. For most homes considering FoxESS, this is the default to size against first.
FoxESS CQ7
in detail.
The newest and highest-density option — genuinely useful at the top end, but only if your home actually needs that much, and worth a couple of honest caveats.
Highest Density
6.98 kWh LFP HV modules — a CQ7-V6M master module with BMU, switchgear and monitoring, plus CQ7-S slave modules — scale from 13.92 to 97.44 kWh usable per stack. It's built for large homes, heavy EV charging or three-phase supply.
Provisional Warranty
As the newest series, its 12-year warranty should be treated as provisional. It shares the range's LFP chemistry, 100% depth of discharge and CEC approval, but it hasn't had the years in the field the EQ4800 has.
Confirm Availability
Because it's the newest release, current availability and delivery timing are worth confirming before you commit. If you don't have a large load, the extra density mostly lengthens payback rather than helping.
Best suited for: Large homes, heavy electric-vehicle charging or three-phase supply where the extra density is genuinely used — with the provisional warranty and current availability confirmed at quote time before you rely on it.
Which FoxESS
suits you?
Same brand, same platform, same inverter family — so this isn't about which battery is better. It's about matching module density to your evening load and any EV charging. Size to what you use, not to the biggest stack on the shelf.
Choose EQ4800
Your goal is to store the day's solar and run the evening on it. The proven 4.66 kWh modules and ~6,000-cycle life cover that at the lowest entry point — no density premium for capacity you won't discharge.
Choose CQ6
You want real headroom — a bigger evening load, some EV charging, room to grow — and the longest warranty. The 5.99 kWh modules up to 83.86 kWh and the 12-year term make this the sensible default.
Consider CQ7
You genuinely have a large evening load, serious EV charging or three-phase. The 6.98 kWh modules reach 97.44 kWh — just confirm the provisional warranty and current availability before you commit.
So which FoxESS is right for you?
There's no winner here — same brand, same LFP cells, same platform, same hybrid inverter family. The right one is the smallest that comfortably covers your evening load, not the biggest number on the quote.
All three use LFP chemistry with 100% usable depth of discharge and pair with a FoxESS H3 or KH hybrid inverter, and all are Clean Energy Council approved. Across the range you can span from about 9 kWh on a small EQ4800 up to roughly 97 kWh on a maxed-out CQ7, so raw capacity is rarely what settles it. What settles it is honest sizing — your evening load plus any EV charging.
- Cycling the day's solar overnight? The EQ4800 is the established workhorse: proven 4.66 kWh modules, 2 to 9 per stack for 9.32–41.93 kWh usable, ~6,000-cycle life and a 10-year warranty. It's the lowest entry point, and for a modest evening load there's no reason to pay for density you won't use.
- Want headroom and the longest warranty? The CQ6 is the sensible default for typical-to-large homes. Its 5.99 kWh modules scale from 11.98 kWh to 83.86 kWh, it runs over 95% round-trip efficiency, and its 12-year warranty is two years longer than the EQ4800 — genuinely useful if you're adding EV charging or expect your load to grow.
- Genuinely large load or heavy EV charging? The CQ7's 6.98 kWh modules reach 13.92–97.44 kWh per stack, built for large homes and three-phase. But it's the newest series, so treat its 12-year warranty as provisional and confirm current availability before you commit. If your load doesn't justify it, the density just lengthens payback.
- Planning to expand? All three are high-voltage stackable, so you can start smaller and add modules later on the same inverter. That's a strong argument against over-buying today — size for now, keep the headroom in mind, and tell your installer if EV charging or a bigger family is coming.
And the honest caveat: chasing the ~97 kWh top of the range is almost never the right move for a normal home. Most households are well served long before that, and paying for capacity you never discharge just lengthens the payback. We carry FoxESS and install all three of these systems — and we'd still rather point you at the smaller model, or tell you to wait, than sell you a stack you don't need. Prices vary with configuration and rebates, so we don't quote headline figures here; a free assessment gives you the real number for your home.
FoxESS EQ4800 vs CQ6 vs CQ7
FAQ.
They are the same brand on the same high-voltage stackable platform — the difference is module density, not quality. The EQ4800 uses 4.66 kWh LFP modules, 2 to 9 per stack, for 9.32–41.93 kWh usable, with around a 6,000-cycle life and a 10-year product warranty. The CQ6 steps up to 5.99 kWh modules, 2 to 14 per stack, for 11.98–83.86 kWh usable, with over 95% round-trip efficiency and a 12-year warranty. The newest CQ7 uses 6.98 kWh HV modules — a CQ7-V6M master module plus CQ7-S slave modules — for 13.92–97.44 kWh usable, with a provisional 12-year warranty. All three are LFP, all offer 100% usable depth of discharge, all are Clean Energy Council approved and all pair with a FoxESS H3 or KH hybrid inverter. So the real question is not which is best, but which module density fits your home and budget.
For most typical-to-large Australian homes the CQ6 is the sensible default. It carries the longest warranty of the three at 12 years to 70% retention, offers over 95% round-trip efficiency, and its 5.99 kWh modules scale from 11.98 kWh up to 83.86 kWh, which is enough headroom for evening load plus some EV charging without over-buying. That said, if your evening usage is modest and you mainly want to cycle stored solar overnight, the established EQ4800 does the same job for a lower entry point, and there is no reason to pay for capacity you will not use. Chasing the biggest number on a quote is usually the wrong call. Size the battery to your evening load and any EV charging, not to the largest stack on the shelf. A free Mission Green assessment sizes it against your actual usage.
Almost certainly not. The CQ7 reaches 13.92–97.44 kWh usable per stack, which is far more than a normal household cycles in a day, and its density is aimed at large homes, heavy electric-vehicle charging or three-phase supply. Most homes are well served long before that, and paying for capacity you never discharge just lengthens the payback. There are two extra things to weigh on the CQ7: it is the newest series, so its 12-year warranty should be treated as provisional, and current availability is worth confirming before you commit. If you genuinely have a large evening load or serious EV charging, the CQ7 earns its place — otherwise the CQ6 or even the EQ4800 is the more honest fit.
Because for a lot of homes it is exactly enough. The EQ4800 is the established workhorse of the range: proven 4.66 kWh LFP modules, 2 to 9 per stack for 9.32–41.93 kWh usable, 100% depth of discharge, around a 6,000-cycle life and a 10-year product warranty to 70% retention. If your goal is to store the day's solar and run the house through the evening, that capacity and cycle life cover it, and it is the lowest entry point in the FoxESS range. The newer CQ6 and CQ7 add density and, on the CQ6, a longer 12-year warranty — genuinely useful if you need the extra headroom, but not worth paying for if you do not. The honest answer is that the right battery is the smallest one that comfortably covers your evening load, and for modest daily-cycling homes that is often the EQ4800.
Yes, and that is a strong reason not to over-buy on day one. All three are high-voltage stackable, so extra modules clip onto the existing stack rather than needing a separate second battery. The EQ4800 stacks 2 to 9 modules for 9.32–41.93 kWh, the CQ6 takes 2 to 14 modules up to 83.86 kWh, and the CQ7 scales up to 97.44 kWh per stack. Because the H3 or KH hybrid inverter and the platform stay the same as you grow, adding capacity later is straightforward. In practice the modules you can add depend on your specific model and inverter capacity, and battery ranges do get revised over time, so it is worth confirming with the supplier before you rely on a future expansion. If you know EV charging or a bigger family is coming, tell your installer at quote time so the system is sized with headroom.
Yes. The EQ4800, CQ6 and CQ7 all use lithium iron phosphate (LFP) chemistry, which runs cooler and is more resistant to thermal runaway than older lithium formulations, and all three are Clean Energy Council approved — the listing that accredited installers and government rebate schemes require, confirming each product has passed Australian electrical safety and performance testing. All offer 100% usable depth of discharge and pair with a VPP-ready FoxESS H3 or KH hybrid inverter. On warranty, the EQ4800 carries 10 years and the CQ6 carries 12 years, each to 70% capacity retention, while the CQ7's 12-year warranty is provisional as it is the newest series. As with any battery, the installer matters as much as the box, so a well-designed, well-installed system is what those warranty and cycle-life figures assume.