In one line
The FOXESS 9.9kW 41.76kWh 1 Phase battery system: a 9.9 kW hybrid inverter paired with 41.76 kWh of storage, supplied and installed as one package.
Who this suits
Largest single-phase FOXESS option.
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 41.76kWh 1 Phase battery system

The largest single-phase FOXESS system in our range: the KH9.9 hybrid inverter with a 41.76 kWh CQ7 (V6) high-voltage battery stack — one master unit plus five modules at 6.96 kWh each, all usable.
At 9.9 kW the inverter sits just under the 10 kW threshold most Victorian distributors apply to single-phase connections, and four MPPT trackers allow up to 19.8 kW of panels across four roof faces at 200% oversizing. Paired with 41.76 kWh of storage, this is about as much as a single-phase property can carry.
A backup supply keeps nominated circuits live 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 | 1 Phase |
| Inverter Output | 10 kW |
| Battery Capacity | 41.76 kWh |
| CT Configuration | 2CT |



