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BigBattery

EG4 280Ah All Weather + 12kPV (ESS)

Name: EG4 280Ah All Weather + 12kPV (ESS)
Brand: BigBattery
SKU: K0104
Price: 7715.0 USD
Availability: InStock

EG4 280Ah All Weather + 12kPV (ESS)

$7,715.00 USD

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Choose Your ESS Configuration 1x 12kPV + 1x All Weather 1x 12kPV + 2x All Weather 1x 12kPV + 3x All Weather 2x 12kPV + 4x All Weather 3x 12kPV + 6x All Weather

EG4 Wallmount All Weather Battery & 12kPV Hybrid Inverter (ESS) | 14.3-85.8kWh | UL9540 | Grid-Tied Home Solar System (12kW-36kW PV)

Product Summary:

The EG4 280Ah All-Weather Battery + EG4 12kPV ESS System is a powerful, all-in-one energy solution designed for both on-grid and off-grid applications. Combining the rugged 14.3kWh EG4 All-Weather LiFePO₄ battery with the efficient EG4 12kPV hybrid inverter, this system delivers reliable, intelligent energy management for residential and backup power needs.

The 12kPV inverter provides up to 8,000W output with 12,000W PV input and dual MPPTs, enabling efficient solar production and seamless power management between solar, battery, and grid. Paired with the durable All-Weather battery – featuring 200A continuous output, 8,000+ cycle life, integrated self-heating, and advanced safety protections – this system ensures dependable performance in demanding environments.

Designed with UL 9540 certified configurations, advanced battery management, and U.S.-engineered components, this system ensures safe, maintenance-free performance with seamless closed-loop communication between battery and inverter.

Ships From: Texas, USA
Warranty: 10 Years (Battery), 10 Years (Inverter)
Support: Lifetime USA-Based Tech Support

Compatibility

Integrated & Optimized System:

EG4 280Ah All-Weather Battery + EG4 12kPV Hybrid Inverter

Expandable & Flexible:

Add additional batteries for increased storage capacity
Supports grid-tied, hybrid, and off-grid installations
Compatible with solar + generator input configurations

Key Features

Complete ESS Solution – Battery + inverter system designed to work seamlessly together
12,000W PV Input / 8,000W Output – Efficient power for residential systems
Dual MPPT Inputs – Optimizes solar generation across multiple arrays
14.3kWh LiFePO₄ Battery – Durable, high-capacity energy storage
200A Continuous Output – Supports high-demand loads and appliances
8,000+ Cycle Life – Long-lasting performance at 80% DoD
All-Weather Design – Built for reliable indoor and outdoor operation
Integrated Self-Heating – Reliable performance in cold climates
Advanced BMS & Safety Protections – Includes EMP protection, fire safety features, and system safeguards
UPS Backup (~20ms) – Fast, seamless transition during outages
Smart Energy Management – Supports peak shaving, load control, and grid interaction
Remote Monitoring & Control – Real-time system tracking and performance insights
Maintenance-Free Operation – No routine servicing required

A reliable, all-in-one energy storage system built for efficiency, flexibility, and long-term energy independence.

Items Included-Quantity depends on Your ESS Configuration

EG4 WallMount 280Ah All Weather | 48V - 14.3kWh | UL1973 | Home Battery Backup LFP

Downloads & Specifications

Battery Specifications

Nominal Voltage:51.2V

Chemistry:Lithium Iron Phosphate (LiFePO4)

kWh Capacity:14.3kWh

Ah Capacity:280Ah

BMS Charging Voltage (Bulk/Absorb):56.0V (±0.8V)

Rec. Charging Voltage (Bulk/Absorb):56.2V (±0.2V)

Rec. Float Setting:54V (±0.2V)

Rec. SoC Cutoff Setting:20%

Max. Continuous Charge Current:140A

Max. Continuous Discharge Current:140A (200A Max. Continuous for 30 min)

Rec. Charge Current:60 – 140A

Rec. Discharge Current:60 – 140A

Max Continuous Discharge Rate:10,240W

Voltage:56V

Power Consumption:224W

Internal Temperature Cutoffs:≤32ºF (On) | ≥41ºF (Off)

Charging Temperature Range:32ºF – 122ºF (0ºC – 50ºC)

Discharging Temperature Range:-4ºF – 131ºF (-20ºC – 55ºC)

Storage Temperature Range:32ºF – 113ºF (0ºC – 45ºC)

Operating Altitude:<16,404 ft (<5,000 m)

Protection Rating:IP65

Communications:RS485 | CANBus

Weight:308.6 lbs (140 kg)

Depth:9.1 in (232 mm)

Width:22.3 in (566 mm)

Height:36.1 in (916 mm)

EG4 12kPV Hybrid Inverter (ESS)

Inverter Specifications

Nominal AC Voltage:120/240VAC; 120/208VAC (L1/L2/N required)

Frequency:50/60Hz

Max. AC Input Power:8000W

Min. Generator Size:>5000W

Max. Gen | Grid Passthrough Current:80A | 80A

Max. Output Current:33.3A @ 240VAC | 38.5A @ 208VAC

Output Voltage:120/240VAC; 120/208VAC

Nominal Power Output:8000W

Output Frequency:50/60Hz

Power Factor:0.99 @ Full Load

Reactive Power Adjust Range:±0.8

Max Cont. Line Wattage:4000W

Peak Power:0.5 s / 1 s / 1 min / 12 min: 16kW / 12kW / 10kW / 8.8kW

Operating Frequency:50/60Hz

THD (V) @ Full Load:<3%

Transfer Time:Single: 20 ms – Default, 10 ms – Selectable; Parallel: 20 ms

Number of MPPTs:2

Inputs per MPPT:2

Max. Usable Input Current:25/25A; 25A per MPPT | 41.6A in total

Max. Short Circuit Input Current:31/31A

DC Input Voltage Range*:100–600 VDC

Unit Startup Voltage:100 VDC

MPPT Operating Voltage Range**:120–500 VDC

Nominal MPPT Voltage:360 VDC

MPPT Voltage High Protection***:550 VDC

Maximum Utilized Solar Power:12000W

Recommended Maximum Solar Input:15000W

Maximum Efficiency (PV → Grid):97.5%

Maximum Efficiency (Battery → Grid):94%

CEC Weighted Efficiency:96.4%

Maximum Efficiency (PV → Battery):99.9%

Idle Consumption (Standby Mode):<55W

Compatible Battery Types:Lead-Acid / Lithium

Max. Charge/Discharge Current:167A @ 48 VDC

Nominal Voltage:48 VDC

Voltage Range:40–60 VDC (Lithium); 40–60 VDC (Lead-Acid)

Recommended Battery Capacity per Inverter:>200Ah

Max. Units in Parallel:10

Product Dimensions (H×W×D):29.5×20.5×11.2 in (750×520×285 mm)

Unit Weight:110 lbs. (50 kg)

Design Topology:High Frequency – Transformerless

Relative Humidity:0–100%

Operating Altitude:<2000m (<6561 ft)

Operating Ambient Temperature Range:-13°F – 140°F (-25°C – 60°C)

Storage Ambient Temperature Range:-13°F – 140°F (-25°C – 60°C)

Noise Emission (Typical):<50 dB @ 3 ft

Locked Rotor Amps (LRA):195A

Communication Interface:RS485/Wi-Fi/CAN

Standard Warranty**:10-year standard warranty

Enclosure Rating:NEMA 4X

Protections:PV Arc Fault Protection, PV Ground Fault Protection, PV Reverse Polarity Protection, Pole Sensitive Leakage Current Monitoring Unit, Surge Protection Device, integrated PV disconnect.