In one line
The FOXESS 9.9kW 27.84kWh 3 Phase battery system: a 9.9 kW hybrid inverter paired with 27.84 kWh of storage, supplied and installed as one package.
Who this suits
Three-phase home, mid-sized array.
Before you choose on size
Federal battery certificates are tiered — weighted toward the first 14 kWh of usable capacity, tapering from 14 to 28 kWh, and small above that. A larger battery does not attract a proportionally larger discount. Choose capacity on your evening and overnight usage and whether you want extended backup, not on the rebate.
→ How the rebates work
What is in the FOXESS 9.9kW 27.84kWh 3 Phase battery system

The most common three-phase configuration in our FOXESS range: the H3-9.9-Smart hybrid inverter with a 27.84 kWh CQ7 high-voltage battery stack — one master unit plus three modules at 6.96 kWh each, all usable.
At 220% DC oversizing the 9.9 kW inverter accepts up to 21.8 kW of panels, so a three-phase home can fill an available roof without moving to a commercial inverter. The included six-CT smart meter measures import and export across all three phases, and this model carries an onboard display screen for reading system status at the unit.
A backup supply keeps nominated circuits running from the battery during an outage. Installs as new solar or AC-couples onto an existing array.
Panels, mounting and installation are quoted separately after a site assessment. Indicative values are not a quote.
Manufacturer information on the FOXESS battery system: FOXESS CQ7 battery. You can check any battery on the Clean Energy Council approved batteries list.
Additional information
| Brand | FOXESS |
|---|---|
| Phase | 3 Phase |
| Inverter Output | 10 kW |
| Battery Capacity | 27.84 kWh |
| CT Configuration | 6CT |



