Foxess 41.9kWh Battery & 5kW Three Phase Hybrid Inverter System
$7,490.00
⚡ Reliably Power Essential Three-Phase Loads With a 5kW Hybrid Inverter
🛡️ Keep Homes & Small Businesses Running During Grid Outages
🔋 High-Capacity 41.9kWh Battery System With Modular Expansion Support
🌞 Store Solar Energy Efficiently and Optimise Usage During Peak Tariff Periods

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Liam B. ★★★★★
We installed the 48kW stack at our property and it transformed operations. It handles EV charging and workshop loads reliably and kept us running during a multi-hour outage which reduced our diesel generator use and fuel costs.
Product Details
Key Features
- Massive 41.9kWh Energy Reservoir: The ultimate high-capacity solution is designed to cover significant energy demands. It provides multiple days of autonomy, perfect for properties in regional NSW or Western Australia looking to weather extended periods of low solar generation.
- 5kW Three-Phase Hybrid Inverter: Essential for three-phase properties, this inverter manages your power seamlessly. It efficiently distributes solar and battery energy across all three phases, ensuring a balanced load for your home.
- Reliable Blackout Protection: Complete with blackout protection (EPS), this system maintains power to all three phases during a grid outage. Keep critical appliances running during Queensland summer storms or unexpected grid failures in South Australia.
- High-Efficiency LiFePO₄ Battery: Utilizes advanced Lithium Iron Phosphate (LFP) chemistry for enhanced safety and performance in the Australian climate. Features a long 6,000+ cycle life and a high Depth of Discharge (DoD) of .
- Optimal Energy Self-Consumption: Drastically cut down on expensive peak-hour electricity use by drawing power from your stored solar energy. Maximise your investment in solar panels and insulate yourself from rising energy costs in Sydney and beyond.
- Modular and Scalable: The high-voltage battery stack is designed for simple, plug-and-play installation, making future expansion easy and maintenance straightforward for local installers.
Technical Specifications
- Battery Technology: Lithium Iron Phosphate (LiFePO₄)
- Total Usable Capacity: 41.9 kWh
- Depth of Discharge: Up to 100%
- Inverter Output Power: 5 kW (Three-Phase)
- System Type: High-Voltage Battery System
- Round-Trip Efficiency: >95%
- Operating Temperature Range: -10°C to 55°C
- Ingress Protection Rating: IP65 (Indoor & Outdoor Installation)
- Backup Power Capability: Yes (EPS Function)
- Scalability: Modular Battery Expansion Supported
| Feature | |
|---|---|
| Sample #1 | 5kW Three-Phase |
| Total Capacity | 41.9kWh Usable |
| Battery Type | LiFePO₄ |
| Backup Power | Instant EPS |
| Modular Design | Yes |
Real uptime gains for businesses
The FoxESS 41.9kWh Battery & 5kW Three-Phase Hybrid Inverter System is engineered to minimise downtime caused by power outages and grid instability. Its rapid response and dependable backup performance help businesses maintain continuity even during extended outage events.
Uptime Gains
Retail & Hospitality
Reduced trading interruptions
Offices & Workspaces
Stable operations during outages
Light Commercial
Improved equipment reliability
Key Features & Benefits

Three-Phase Energy Stability
Balanced power delivery for essential loads

High-Capacity Storage
41.9kWh usable energy for extended backup

Built for Australian Conditions
IP65 rating and durable battery chemistry

Seamless Blackout Protection
EPS functionality ensures fast switchover
Simple onsite assessment to installation
Answers for commercial buyers' concerns
How long will the FoxESS 41.9kWh battery system last?
Is this system suitable for three-phase properties?
Does it provide backup power during blackouts?
Can I connect this system to existing solar panels?
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