EG4 Wallmount All Weather Battery & 18kPV Hybrid Inverter (ESS) | 14.3–85.8kWh | UL9540 | Grid-Tied Home Solar System (18kW-54kW PV)
EG4 Wallmount All Weather Battery & 18kPV Hybrid Inverter (ESS) | 14.3–85.8kWh | UL9540 | Grid-Tied Home Solar System (18kW-54kW PV) - Image 2
EG4 Wallmount All Weather Battery & 18kPV Hybrid Inverter (ESS) | 14.3–85.8kWh | UL9540 | Grid-Tied Home Solar System (18kW-54kW PV) - Image 3
EG4 Wallmount All Weather Battery & 18kPV Hybrid Inverter (ESS) | 14.3–85.8kWh | UL9540 | Grid-Tied Home Solar System (18kW-54kW PV) - Image 4
EG4 Wallmount All Weather Battery & 18kPV Hybrid Inverter (ESS) | 14.3–85.8kWh | UL9540 | Grid-Tied Home Solar System (18kW-54kW PV) - Image 5
EG4 Wallmount All Weather Battery & 18kPV Hybrid Inverter (ESS) | 14.3–85.8kWh | UL9540 | Grid-Tied Home Solar System (18kW-54kW PV) - Image 6
EG4 Wallmount All Weather Battery & 18kPV Hybrid Inverter (ESS) | 14.3–85.8kWh | UL9540 | Grid-Tied Home Solar System (18kW-54kW PV) - Image 7
EG4 Wallmount All Weather Battery & 18kPV Hybrid Inverter (ESS) | 14.3–85.8kWh | UL9540 | Grid-Tied Home Solar System (18kW-54kW PV) - Image 8

Product Summary:

The EG4 WallMount All Weather Battery (14.3kWh, 200A) paired with the EG4 12K Hybrid Inverter (12,000W / 18,000W PV input) delivers a complete, high-capacity energy storage solution for on-grid and off-grid systems. With 8,000+ cycles at 80% DoD, EMP protection, and closed-loop communication, this setup provides seamless backup power, peak shaving, and smart load control. The inverter’s 3 MPPTs, rapid UPS transfer (15–30ms), and remote monitoring combine with the battery’s weather-tight design, dual fire arrestors, and 10-year warranty for reliable, efficient home or commercial energy independence.

EG4 Wallmount All Weather Battery & 18kPV Hybrid Inverter (ESS) | 14.3–85.8kWh | UL9540 | Grid-Tied Home Solar System (18kW-54kW PV)

$8,535.00
SKU# K0756

Battery Selected

1× EG4 All Weather

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

3x Inverter

3 Phase

SKU: K0756-V Category:
30% Federal Tax Credit AvailableThis system qualifies for federal rebates.
Learn More Here

Compatible Accessories & Additional Add-ons

Power Stays On, When Storm-Rain Strikes. EG4 18kpv + All Weather
Power endures snow. EG4 18kpv + All Weather
GridBoss
Simply scalable. EG4 18kpv + All Weather
UL Certified

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Battery Downloads

SKU#:K0756
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL9540A Certificate:DownloadDOWNLOAD
UL1973 Certificate:DownloadDOWNLOAD
Quick Start Guide:DownloadDOWNLOAD
CEC Listing- EG4 WallMount All Weather:Go to linkGO TO LINK

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)

Inverter Downloads

SKU#:K0756
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 All Weather Battery: 10-Year EG4 Manufacturer Warranty

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