EG4 280Ah Indoor Battery – EG4 12000XP Hybrid Inverter (ESS) | 14.3-85.8 kWh | Off-Grid Home Solar System (24kW-72kW PV)

$27,975.00

SKU# K0132-V

The EG4 WallMount-12000XP ESS System is a powerful, scalable off-grid and hybrid energy storage solution built for residential and commercial applications. Starting at 28.6 kWh and expandable up to 85.8 kWh, this system delivers 12 kW of continuous output and supports 24–72 kW of solar PV input, making it ideal for whole-home backup, energy independence, and peak-shaving applications.

 

The system pairs 48 V EG4 280 Ah WallMount Indoor LiFePO₄ batteries, rated for 8,000+ cycles at 80% DoD, with the EG4 12000XP hybrid inverter for seamless grid-to-battery switching, smart load control, AC coupling, and advanced monitoring. With an intelligent BMS, self-heating, integrated fire safety, UL9540/9540A/1973 certifications, and a 10-year battery warranty, the WallMount-12000XP kit delivers long-term reliability, safety, and peace of mind.

Choose Your Inverter Option*

EG4 6000XP EG4 12000XP None

Choose Your Battery Option*

EG4 280Ah All Weather EG4 280Ah Indoor None

Choose Your Inverter Option*

EG4 6000XP EG4 12000XP None

Choose Your Battery Option*

BigBattery NEXUS BigBattery ETHOS BigBattery HUSKY2 INV EG4 280Ah All Weather EG4 280Ah Indoor None

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Battery Downloads

SKU#:K0173, K0132, K0133, K0174, K0175, K0176, K0177
Spec Sheet:DownloadDOWNLOAD
Quick Start Guide:DownloadDOWNLOAD
UL9540A Certificate:DownloadDOWNLOAD
UL1973 Certificate:DownloadDOWNLOAD
Connection Guide:DownloadDOWNLOAD
Monitoring & Settings Guide:DownloadDOWNLOAD
Maintenance Guide:DownloadDOWNLOAD
Firmware Update Guide:DownloadDOWNLOAD
CEC Listing- EG4 WallMount Indoor:Go to linkGO TO LINK

Battery Specifications

System Voltage:48V
Nominal Voltage:51.2V
Chemistry:LiFePO4
kWh Capacity:14.3kWh
Ah Capacity:280Ah
BMS Charging Voltage (Bulk/Absorb):56V (±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/Discharge Current:200A
Rec. Charge Current:60 – 160A
Rec. Discharge Current:160A
Max Continuous Discharge Rate:10240W
Voltage:56V
Power Consumption:224W
Internal Temperature Cutoffs:≤32ºF (On) | ≥41ºF (Off)
Charging Temperature Range:32ºF – 113ºF (0ºC – 45ºC)
Discharging Temperature Range:-4ºF – 122ºF (-20ºC – 50ºC)
Storage Temperature Range:-4ºF – 122ºF (-20ºC – 50ºC)
Protection Rating:IP20
Communications:RS485 | CANBus
Weight:282.2 lbs (128 kg)
Depth:9.6 in (245 mm)
Width:18.1 in (460 mm)
Height:36.4 in (925 mm)

Inverter Downloads

SKU:K0173, K0132, K0133, K0174, K0175, K0176, K0177
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL1741 Certificate:DownloadDOWNLOAD
UL9540 Certificate:DownloadDOWNLOAD
WiFi Configuration Guide:DownloadDOWNLOAD
CEC Listing – EG4 12000XP:Go to linkGO TO LINK

Inverter Specifications

Nominal AC Voltage:120/240VAC | 120/208VAC (L1/L2/N required)
Frequency (Grid | Generator):60 Hz (Default) | 50 Hz (Configurable)
Max Continuous AC Current (Grid | Generator):100A @ 240VAC | 62.5A @ 240VAC
Max AC Input Power:24000W
AC Bypass (Grid | Generator):100A | 90A
Recommended Generator Capacity:6000W – 15000W
Output Voltage:120/240VAC | 208VAC
Output Frequency:60 Hz (Default) | 50 Hz (Configurable)
Max Continuous Output Current:50A @ 240VAC | 57.7A @ 208VAC
Nominal Output Power (without PV):12000W @ 240V | 12000W @ 208V
Nominal Output Power (with PV):12000W @ 240V | 12000W @ 208V
Max Continuous Wattage:12000W (L1/L2) | 6000W (L1-N/L2-N)
Surge Capacity:18000W (5 sec) | 15000W (10 sec)
Power Factor:0.99
Total Harmonic Distortion:<3%
Switching Time:<10 ms (Single) | <20 ms (Parallel)
No. of MPPTs (Inputs per MPPT):2 (2)
Max Input Current:35A / 35A
Max Short Circuit Input Current:44A / 44A
DC Input Voltage Range:100 – 480VDC
Min Start Up Voltage:100VDC
MPPT Operating Voltage Range:120 – 385VDC
Nominal MPPT Voltage:320VDC
Max Utilized PV Power:24000W (12000W per MPPT)
Max Recommended PV Input:28000W (14000W per MPPT)
Efficiency:99% (MPPT) | 93.5% (PV to Loads) | 92.8% (PV to Battery) | 92.5% (AC to Battery) | 90.2% (Battery to Loads)
Idle Consumption (Standby Mode):<70W
Nominal Voltage:48VDC
Battery Voltage Range:46.4 – 60VDC
Max Charge / Discharge Current:250A
Max Charge / Discharge Power:12000W
DC Cut-Off Voltage:59VDC
Recommended Battery Capacity per Inverter:>400Ah
Max Parallel Connections:6
Protection Rating:IP20
Communication Interface:RS485 / CANBus / WiFi
Operating Temperature (Full Load):32ºF – 113ºF (0ºC – 45ºC)
Storage Temperature:5ºF – 140ºF (-15ºC – 60ºC)
Altitude:<6,561 ft (2000 m)
Relative Humidity:5 – 95% (Non-Condensing)
Typical Noise Emission:<60 dB
Cooling Method:Fan
Weight:104.7 lbs (47.5 kg)
Depth:5.9 in (150 mm)
Width:20.9 in (530 mm)
Height:34.25 in (870 mm)

Compare Battery & Inverter

EG4 12000XP Inverter: 5-Year EG4 Manufacturer Warranty

EG4 Wallmount 280Ah Indoor Battery: 10-Year EG4 Manufacturer Warranty

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