Fox ESS CQ7 High-Voltage Battery
The full CQ7 datasheet, stack pricing (L2–L14), sizing guide, blackout backup and Australian install process — from a CEC-accredited Fox ESS installer.
Quick answer
The Fox ESS CQ7 is a high-voltage modular LFP battery — 6.96kWh per module, scalable from 13.92 kWh to 97.44 kWh, 80A, 100% depth of discharge, IP65, 10-year warranty, and eligible for the 2026 federal battery rebate.
Installed price guidance (after rebate)
CQ7-L2 (13.92 kWh) from $9k · L4 (27.84 kWh) $16k–$20k · L6 (41.76 kWh) $19k–$27k · L14 (97.44 kWh) $42k–$55k.
Rebate applied at point of sale · No waiting for a cheque · Fixed price in writing
6.96 kWh
Per module
80 A
Max charge/discharge
-25°C
(w) warm-up variant
IP65
Indoor & outdoor
Fox ESS CQ7 full specifications
From the official CQ7 V1.2 datasheet.
| Battery type | Lithium Iron Phosphate (LFP) |
| Nominal / usable energy per module | 6.96 kWh |
| Nominal voltage per module | 51.2 V |
| Modules per stack | 2 – 14 (1 x CQ7-M controller + 1–13 x CQ7-S) |
| Total usable capacity | 13.92 – 97.44 kWh |
| Operating voltage range | 104.4 – 919.8 V (high voltage) |
| Max charge / discharge current | 80 A |
| Depth of discharge | 100% |
| Round-trip efficiency | >95% |
| Communication | CAN / RS485 |
| Operating temperature | -10 to 55°C (standard) · -25 to 55°C (CQ7 (w) warm-up variant) |
| Ingress protection | IP65 (indoor & outdoor) |
| Certifications | IEC 62619, IEC 61000-6-1/2/3/4, UN38.3 |
| Warranty | 10 years / 60% capacity retention |
CQ7-L2 to CQ7-L14 — capacity & pricing breakdown
The CQ7 stacks in 6.96kWh increments on a single controller. Add modules later without re-commissioning the base stack.
| Model | Usable capacity | Modules | Best for | After-rebate price |
|---|---|---|---|---|
| CQ7-L2 | 13.92 kWh | 1 M + 1 S | Small home night-time offset, apartments | $9k – $12k |
| CQ7-L3 | 20.88 kWh | 1 M + 2 S | 3-bed family home, 10kW solar | $12k – $16k |
| CQ7-L4 | 27.84 kWh | 1 M + 3 S | 4-bed home, EV top-up | $16k – $20k |
| CQ7-L6 | 41.76 kWh | 1 M + 5 S | Large home + blackout backup, small commercial | $19k – $27k |
| CQ7-L9 | 62.64 kWh | 1 M + 8 S | Acreage, off-grid, cafe / workshop | $28k – $36k |
| CQ7-L14 | 97.44 kWh | 1 M + 13 S | Off-grid property, commercial storage | $42k – $55k |
Most popular: 27.84 kWh & 41.76 kWh
The two stack sizes 90% of Australian households choose. Both include the CQ7-M controller, Fox ESS H3 or AIO hybrid inverter, backup circuit and full commissioning.
4-bed family + EV
CQ7-L4 — 27.84 kWh
$16,000 – $20,000
$8k – $10k rebate applied · installed
- 4 x 6.96 kWh modules (1 M + 3 S)
- Runs a 4-bed home + EV overnight
- 80A discharge — ducted AC + oven together
- Add 1–2 modules later without recommissioning
- Single-phase or three-phase compatible
Large home + full blackout backup
CQ7-L6 — 41.76 kWh
$19,000 – $27,000
$10k – $14k rebate applied · installed
- 6 x 6.96 kWh modules (1 M + 5 S)
- 12–24 hrs whole-home blackout backup
- Ideal pair for 10–15 kW solar arrays
- Best $/kWh in the CQ7 line
- Ready for small commercial or off-grid
Fixed CQ7 quote
Get your installed CQ7 price in 24 hours
Tell us your postcode and rough usage. We'll size the right stack (L2–L14), apply the 2026 federal rebate at point of sale and email a fixed installed price.
- Rebate applied at point of sale
- CEC-accredited Fox ESS installer
- Fixed price in writing — no surprises
- 10-year product + workmanship warranty
CQ7 vs CQ6 vs EQ4800 — how they compare
| Spec | CQ7 | CQ6 | EQ4800 |
|---|---|---|---|
| Module size | 6.96 kWh | 12 kWh | 4.8 kWh |
| Max capacity | 97.44 kWh (14 modules) | 60 kWh | 28.8 kWh (6 modules) |
| Max current | 80 A | 50 A | 25 A |
| Operating temp | -25 to 55°C (w variant) | -10 to 50°C | -10 to 50°C |
| IP rating | IP65 | IP65 | IP65 |
| Best for | Large / off-grid / commercial | Mid-large family homes | Small homes / retrofit |
Get CQ7 pricing for your address
We size the right stack, apply the rebate at point of sale and give you a fixed installed price in writing.
CQ7 datasheet explained (in plain English)
6.96 kWh per module, 100% DoD
You get the full 6.96kWh every cycle — no hidden 10% reserve. That's why installed capacity numbers (L6 = 41.76kWh) match what the battery actually delivers.
104.4 – 919.8 V high voltage
Higher voltage means lower current for the same power, less cable loss and smaller conductors. That's why the CQ7 installs cleaner than low-voltage batteries at the same kWh.
80 A max current
80A charge/discharge lets a single CQ7 stack push out full inverter power (up to 15kW on AIO) without derating — enough to run ducted air-con + oven + EV charger simultaneously.
IP65 & -25°C (w) variant
IP65 means dust-tight and rated against jet water — safe outdoors on a shaded wall. The (w) warm-up variant pre-heats the cells so alpine and cold-region homes still get full performance in winter.
10-year / 60% warranty
Fox ESS guarantees the battery retains at least 60% of its rated capacity after 10 years of daily cycling — in line with Tesla Powerwall 3 (70%) and better than many low-voltage rivals.
IEC 62619 + UN38.3 certified
IEC 62619 covers safety of secondary lithium cells for stationary use; UN38.3 covers safe transport. Both are required for CEC listing and the federal battery rebate.
CQ7 installation process
- 1
Site inspection & load audit
We review your bills, switchboard, roof and preferred battery location. 30–45 minutes on site or via video call.
- 2
Design & fixed quote
We size the CQ7 stack (L2–L14), specify the H3 or AIO inverter, price switchboard upgrades and apply the 2026 federal rebate at point of sale.
- 3
Installation (typically 1 day)
Stack CQ7-M + CQ7-S modules on the wall/floor mount, wire the DC bus, connect the hybrid inverter, wire the backup circuit and complete the switchboard upgrade.
- 4
Commissioning & app setup
Configure via Fox ESS Cloud, register the warranty, submit rebate paperwork and walk you through the app on your phone.
- 5
10-year support
Product warranty, workmanship warranty and Fox ESS Cloud monitoring included. Firmware updates handled remotely.
Fox ESS CQ7 FAQs
Ready for a fixed CQ7 price?
Rebate applied at point of sale. No waiting for a cheque.