Big Battery EG4 12kW (24kPV) OFF-GRID INVERTER

This cutting-edge 12000XP All-in-One Inverter & Charger from EG4 is a multifunctional, split-phase off-grid and solar inverter, 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 24000W. This high-tech inverter features a built-in switchgear for simple, secure installations, and comes equipped with an in-depth LCD touch screen interface and remote monitoring capabilities for enhanced visibility and a smoother user experience, as well as 2 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 Plus, by leaving behind outdated transformer-based designs, the 12000XP inverter is able to remain lightweight and energy-efficient, consuming minimal power during idling periods, without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.
The 12000XP inverter supports a variety of working modes and system configurations, so whether you’re looking to enhance your home’s solar backup 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 12000XP All-in-One Inverter & Charger from EG4.
Tech Specs


AC INPUT












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








AC OUTPUT












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)








PV INPUT












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)


Max. 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








BATTERY












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








OPERATING ENVIRONMENT












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 (Non-Condensing):
5 - 95%


Typical Noise Emission:
<60 dB


Cooling Method:
Fan








DIMENSIONS












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)

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.