EG4 12kPV ETHOS Kit Hybrid Power System with Stackable Storage & Solar Options
The EG4 12kPV ETHOS Kit Hybrid Power System is a scalable hybrid power solution designed to support off-grid living, battery backup, or solar-ready systems. Centered around the 8kW EG4 12kPV all-in-one inverter, this kit gives you the ability to integrate BigBattery's ETHOS LiFePO₄ storage system—available in 10.2kWh to 30.7kWh options—and expand your solar generation with up to 32 high-efficiency SunGold 415W panels. Whether you're building an energy-resilient home or upgrading your backup system, this kit offers plug-and-play performance with room to grow.
EG4 12kPV ETHOS Kit Hybrid Power System Features
8kW All-in-One Hybrid Inverter
The EG4 12kPV delivers 8,000W continuous output and includes a built-in MPPT controller, generator/grid input support, and seamless backup switching.
Modular ETHOS Battery System
Choose from 10.2kWh to 30.7kWh with BigBattery ETHOS modules. Stackable design provides compact, scalable energy storage with powerful lithium performance.
Optional Solar Array Configurations
Add 10, 20, or 32 SunGold Power 415W Mono Black PERC panels to scale your solar capacity from supplemental to full off-grid capability.
Smart Monitoring
LCD display plus app integration allows for real-time data tracking, performance monitoring, and customizable energy modes.
Flexible Ground Mount Option
Choose to add Rich Solar adjustable ground mount kits to streamline your solar panel installation.
EG4 12kPV ETHOS Kit Hybrid Power System Features
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Off-grid homes or cabins – reliable and expandable off-grid energy
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Backup power for grid-tied homes – protect essential circuits from blackouts
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Sustainable solar-first builds – start battery-only, then add solar
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Remote operations – great for agricultural setups, shops, or remote workstations
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Expandable battery systems – begin with 10.2kWh and scale as needs grow
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Portable or modular shelters – fits trailers or mobile power deployments
What’s Included?
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Inverter
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Battery Options (choose one):
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2-Module BigBattery ETHOS – 10.2kWh
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3-Module BigBattery ETHOS – 15.3kWh
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4-Module BigBattery ETHOS – 20.4kWh
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6-Module BigBattery ETHOS – 30.7kWh
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Solar Panel Options (optional):
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10× SunGold Power 415W Mono Black PERC
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20× SunGold Power 415W Mono Black PERC
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32× SunGold Power 415W Mono Black PERC
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Mounting Options (optional):
EG4 12kPV All-In-One Hybrid Inverter Specification
| Specification |
Details |
| AC Output |
8kW Continuous |
| PV Input |
12kW (Recommended Max: 15kW Array) |
| MPPTs |
2 (25A each) |
| Parallel Capability |
Up to 10 units (Total 80kW) |
| Dimensions (L×W×H) |
29.5 × 20.5 × 11.2 in (750 × 520 × 285 mm) |
| Weight |
110 lbs (50 kg) |
| Warranty |
10 Years |
| Proposition 65 Warning |
California Proposition 65 Compliant |
BigBattery ETHOS Control Box Specifications
| Category |
Specifications |
| SKU |
CNT060 |
| Operating Voltage Range: |
30 - 60V |
| Max Continuous Discharge Current: |
200A |
| Max Charge Current: |
200A |
| Charge Temperature Range: |
-4°F - 122°F (-20°C - 50°C) |
| Discharge Temperature Range: |
-4°F - 122°F (-20°C - 50°C) |
| Optimal Discharge Temperature Range: |
-4°F - 122°F (-20°C - 50°C) |
| Weight |
22 lb (10 kg) |
| Depth |
6.7 in (170 mm) |
| Width |
26.5 in (674 mm) |
| Height: |
26.5 in (674 mm) |
| Max Connections: |
Up to (16) parallel connections per control box |
| Communications |
CANBus / RS485 |
BigBattery 48V ETHOS 5.12kWh Stackable Battery Module Specifications
| Category |
Specifications |
| SKU |
FETHS-48051-G1 |
| UPC |
850061252067 |
| System Voltage: |
48V |
| Nominal Voltage: |
51.2V |
| Chemistry: |
LiFePO4 |
| kWh Capacity: |
5.12kWh |
| Ah Capacity: |
100Ah |
| Charging Voltage Range: |
55.6 - 57V |
| Max Charge Voltage: |
57V |
| Operating Voltage Range: |
48 – 57V |
| Suggested Low Voltage Cutoff: |
48 – 50.8V |
| Cell Configuration: |
16S |
| Max Continuous Discharge Current: |
100A |
| Max Continuous Power: |
5120W |
| Max Discharge Peak Current: |
150A (Max 5 seconds) |
| Max Charge Current: |
100A |
| Charge Temperature Range: |
32°F - 113°F (0°C - 45°C) |
| Discharge Temperature Range: |
-4°F - 140°F (-20°C - 60°C) |
| Optimal Discharge Temperature Range: |
59°F - 95°F (15°C - 35°C) |
| Storage Temperature Range: |
-4°F - 113°F (-20°C - 45°C) (Max 6 months) |
| Depth |
6.7 in (170 mm) |
| Width |
26.5 in (674 mm) |
| Height: |
16.5 in (419 mm) |
| Max Connections: |
Up to (16) parallel connections per control box |
| Protection Rating: |
IP65 |
| Communications: |
CANBus / RS485 |
| Certifications |
UL9540a, UL1973, & UN38.3 |
SunGold Power 415W Mono Black PERC Panel Specifications
| Category |
Specification |
| Peak Power (Pmax) |
415W |
| Production Tolerance |
±3% |
| Maximum Power Current (Imp) |
13.13 A |
| Maximum Power Voltage (Vmp) |
31.6V |
| Short Circuit Current (Isc) |
14.02A |
| Open Circuit Voltage (Voc) |
37.50V |
| Maximum System Voltage |
1500V |
| Wind Resistance |
2400Pa |
| Output Cables |
12 AWG (1 ft per cable) |
| Number of Cells |
108(6*18) |
| Cell Type |
Mono 182*91mm |
| Certifications |
UL 61730 CE TUV |
| Product Weight |
45.8lbs |
| Product Dimension |
67.8*44.6*1.4inch |
| Package Weight |
100.5lbs（2PCS） |
Frequently-Asked Questions
Is this system ready to use without solar?
Yes. You can operate the system in battery-only mode and add solar anytime in the future.
Can I expand the battery or solar panels later?
Absolutely. The system is modular—ETHOS batteries are stackable and solar can be added in phases.
What appliances can this inverter run?
The 8kW inverter can handle refrigerators, air conditioners, pumps, lights, electronics, and most household loads with ease.
Is the ETHOS battery UL listed?
Yes, BigBattery ETHOS modules meet industry-standard certifications and safety requirements for residential and commercial use.
Do I need professional installation?
While many components are modular, professional installation is strongly recommended for code compliance and system warranty.
Manual
