Big Battery EG4 18kPV Hybrid Inverter

This cutting-edge 12K (18kPV) Hybrid Inverter from EG4 is a versatile, all-in-one inverter and charger, capable of supporting even the most robust home power systems with a rated power of 12000W and the ability to handle PV arrays of up to 18000W. This high-tech inverter guarantees a simple, plug-and-play installation, and comes equipped with an in-depth LCD touch screen interface and remote monitoring capabilities for enhanced visibility and a smoother user experience during operation, as well as 3 MPPT inputs, built-in circuit breakers, and an integrated UPS module for seamless input switching in only 15 – 30ms. Plus, by leaving behind outdated transformer-based designs, this 12K inverter is able to remain lightweight and energy-efficient, consuming minimal power during idling periods, without having to compromise on surge capacity or line imbalance capabilities.
This cutting-edge inverter supports a variety of working modes and system configurations, so whether you’re looking to enhance your home’s solar system, or upgrade your homestead’s off-grid ESS setup, this inverter can handle a wide range of home power applications. Plus, through its smart load control, AC coupling abilities, and peak shaving function, you can meet your power needs and protect your home against unstable grids and rolling blackouts, while seeing huge savings each month on your electric bill. Order today to optimize your home’s power with the state-of-the-art 12K (18kPV) All-in-One Inverter & Charger from EG4.
Tech Specs
 


AC INPUT












AC Voltage:
120V AC / 240V AC


AC Frequency:
50 Hz / 60 Hz


Max. Continuous AC Current:
50A @ 240V AC


Max. AC Input Power:
12000W


Max. AC Bypass:
200A








AC GRID OUTPUT












Operating Voltage Range:
180 - 270V AC


Output Voltage:
120V AC / 240V AC


Max. Continuous Output Current:
50A


Output Frequency:
50 Hz / 60 Hz


Output Power:
12000W


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)








AC BACKUP / UPS OUTPUT












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








PV INPUT












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)








BATTERY












Nominal Voltage:
48V DC


Voltage Range:
40 - 60V DC


Max. Charge / Discharge Current:
250A


Recc. Battery Capacity per Inverter:
>200 Ah








OPERATING ENVIRONMENT












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








DIMENSIONS












Weight:
121 lbs (55 kg)


Depth:
11.2 in (285 mm)


Width:
20.5 in (520 mm)


Height:
34.3 in (871 mm)

Orders ship within 1–5 business days. Shipping rates vary by order and destination. We ship across the U.S., with additional charges for Hawaii and Alaska. For damaged, lost, or delayed orders, please contact us for assistance.

Most products include a 12-month limited warranty covering manufacturer defects. Warranty terms may vary by product, especially lithium batteries and electrical components. Damage from improper installation, misuse, or normal wear is not covered.

Returns are accepted within 30 days of delivery for a full refund or exchange. Items must be new, unused, and undamaged, with the original order number provided. Customers are responsible for return shipping on unwanted or incorrectly ordered items. Lithium batteries must be unused and sealed to qualify for return. Damaged, defective, or incorrect orders should be reported immediately.