EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV)
EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV) - Image 2
EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV) - Image 3
EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV) - Image 4
EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV) - Image 5
EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV) - Image 6
EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV) - Image 7
EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV) - Image 8
EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV) - Image 9

Product Summary:

The EG4 energy storage kit combines the 12K Hybrid Inverter and 14.3kWh WallMount Battery for a powerful grid-tied or off-grid solution. Delivering 12,000W output and 18,000W PV input, it offers reliable backup power, efficient solar integration, and cost-saving energy management. With LiFePO₄ storage, 8,000+ cycles, self-heating, emergency stop, and RS485/CANBus support, the WallMount ensures safe, long-lasting performance. Dual MPPTs, 20ms UPS transfer, smart load control, and remote monitoring make this kit ideal for homes and small businesses seeking dependable energy independence.

EG4 Wallmount 280Ah Indoor Battery & 18kPV Hybrid Inverter (ESS) | 14.3–42.9kWh | UL9540 | Grid-Tied Home Solar System (18kW PV)

$8,125.00
SKU# K0112

Battery Selected

1× EG4 280Ah Indoor

Total Capacity

14.3 kWh

Inverter Selected

1× EG4 18kPV

Input / Output

18 kW / 12 kW

Choose Your Inverter Option*

EG4 12kPV EG4 18kPV EG4 FlexBOSS18 EG4 FlexBOSS21 None

Choose Your Battery Option*

BigBattery ETHOS EG4 280Ah All Weather EG4 280Ah Indoor None

Choose Your Inverter Option*

EG4 6000XP EG4 12000XP VICTRON MP II 3000 VICTRON MP II 5000

Choose Your Battery Option*

BigBattery NEXUS BigBattery ETHOS BigBattery HUSKY2 INV EG4 280Ah All Weather EG4 280Ah Indoor

Choose Your ESS Configuration*

1x Inverter

Standard

2x Inverter

Large

SKU: K0112-V Category:
Quantity:

Compatible Accessories & Additional Add-ons

Simple System Expansion EG4 18kpv + Indoor ESS
EG4 18kpv + Indoor ESS Power that never sleeps at night
UL Certified
Indoor Features
GridBoss

.

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Battery Downloads

SKU#:K0112
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#:K0112
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL 1741 Certificate:DownloadDOWNLOAD
UL 1741 CRD PCS Test Verification Of Conformity Security:DownloadDOWNLOAD
Rapid Shut Down Wiring Guide:DownloadDOWNLOAD
Whitepapers, Firmware, & Wiring Diagrams:Go to linkGO TO LINK
CEC Listing – EG4 18kPv:Go to linkGO TO LINK

Inverter Specifications

AC Voltage:120V AC / 240V AC
AC Frequency:50 Hz / 60 Hz
Nominal Voltage:51.2V
Max. Continuous AC Current:50A @ 240V AC
Max. AC Input Power:12000W
Max. AC Bypass:200A
Operating Voltage Range:180 – 270V AC
Output Voltage:120V AC / 240V AC
Max. Continuous Output Current:50A
Output Power:12000W
BMS Cutoff Range:42 – 47V
Surge Capacity (with PV):14700W (10 min) / 15500W (5 min)
Surge Capacity (without PV):13500W (10 min)
Max. Continuous Line Wattage:6000W
Power Factor:0.99 (Full Load)
Reactive Power Adjustment Range:0.8 ~ 0.8 Leading Adjustable
Total Harmonic Distortion:<5% (Full Load)
Transfer Time:10 – 20 ms (Single) / 20 ms (Parallel)
Max. Continuous Output Current:50A
AC Bypass (Generator):90A
Output Voltage:120V AC / 240V AC
Output Power:12000W
Max. Continuous Line Wattage:8000W (per 120V)
Operating Voltage Range:180 – 270V AC
Output Frequency:50 Hz / 60 Hz
Max. Output Power (with PV):14700W (10 min) / 15500W (5 min)
Max. Output Power (without PV):13500W (10 min)
Total Harmonic Distortion Voltage:<5%
Switching Time:10 ms
No. of MPPTs:3
Inputs per MPPT:2 (MPPT 1) / 1 (MPPT 2 & 3)
Max. Input Current:25A (MPPT 1) / 15A (MPPT 2 & 3)
Max. Short Circuit Input Current:31A (MPPT 1) / 19A (MPPT 2 & 3)
DC Input Voltage Range:100 – 600V DC
Start Up Voltage:100V DC
MPPT Operating Voltage Range:140 – 500V DC
MPPT Voltage:360V DC
Max. PV Array Power:18000W
Max. Efficiency:94 – 99.9%
Idle Consumption:~70W (Normal) / ~18W (Standby Mode)
Nominal Voltage:48V DC
Voltage Range:40 – 60V DC
Max. Charge / Discharge Current:250A
Recc. Battery Capacity per Inverter:>200 Ah
Operating / Storage Temperature Range:-13ºF – 140ºF (-25ºC – 60ºC)
Altitude:<6,561 ft (2000 m)
Relative Humidity:0 – 100%
Typical Noise Emission:68 dB @ 3 ft
Protection Rating:IP65 / NEMA 4X
Communications:RS485 / CANBus / WiFi
Max. Parallel Connections:10
Weight:121 lbs (55 kg)
Depth:11.2 in (285 mm)
Width:20.5 in (520 mm)
Height:34.3 in (871 mm)

Compare Battery & Inverter

 

EG4 18kPV Inverter: 10-Year EG4 Manufacturer Warranty

EG4 Indoor Battery: 10-Year EG4 Manufacturer Warranty

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