EG4 12000XP 48V Split Phase Off-Grid Inverter, 12kW AC Output, 24kW Utilized Solar Input, UL 1741 & UL 9540 Solar Inverter

Overview

Large loads like shop saws, lathes, and EV chargers are where the EG4 12000XP earns its place. This 48V off-grid inverter delivers 12kW of 120/240V output and supports up to 50A per leg continuously.

Planning a system? Read our guide: How to size a battery backup system for your home.

Key benefits

• Switches to battery power within 10ms of the grid cutting out.
• Generator auto-start uses battery state of charge to start the generator at a user-defined level.
• Smart Loads port powers extra loads only when excess power is present, while the Loads port stays on for critical circuits.
• Low THD output lets appliances run without humming.

Key features

• Two MPPTs with two parallel inputs each, plus AC coupling for a fifth solar input up to 62.5A
• Dedicated generator port
• Up to six units in parallel for 300A of continuous AC power
• Pairs with 48V batteries such as the EG4 Indoor WallMount, LL-S, or LiFePower4
• Arc fault protection, reverse polarity protection, and RSD capability (requires an external shutoff switch)
• UL 1741 and UL 9540

Ideal use

Suited to off-grid homes and backup systems with heavy loads, and to retrofitting an existing grid-tied solar system with batteries through AC coupling.

Key specifications

Model / SKU

EG4INV12KXPV2

Brand

EG4

Category

Whole-home backup

Voltage

48V

Rated power

12,000 W

From the manufacturer

About the EG4 12000XP 12kW Off-Grid All-In-One Inverter/Charger The 12000XP (also referenced as SKU 1510979 by other retailers) is an excellent choice for solar power backup systems or off-grid systems with large loads. Each leg of 120/240V power can support up to 50A of loads continuously, which is enough to run mechanical shop equipment like saws, lathes, or CNC machines. This home energy storage unit allows for electric vehicle charging without shutting the system down when another appliance is turned on. If 50A of 120/240V power is not enough for the household loads, the 12000XP inverter can have six units in parallel for a total of 300A of continuous AC power. This inverter works as part of a solar and battery powered emergency backup system that turns on battery power within 10ms of grid power cutting out. The low THD (total harmonic distortion, a measure of how pure the AC output is) lets appliances operate without interruption or humming. This inverter is equipped with two MPPTs (Maximum Power Point Trackers) with two parallel inputs each, a dedicated generator port, and a programmable port for smart load control or AC coupling. It pairs well with 48V batteries such as the EG4 Indoor WallMount, LL-S, or LiFePower4 rack mount batteries. EG4’s 12000XP includes a generator auto-start function. This feature communicates with the BMS (Battery Management System) to evaluate the battery SOC (State of Charge %). When the battery reaches a user defined level of charge, the inverter automatically starts the generator to redirect power to simultaneously charge the batteries and run loads. This feature optimizes battery health. The 12000XP smart load feature powers loads only when user-defined battery charge levels and PV input requirements are met. Power is maintained on the regular Loads port at all times and acts as the “critical loads” port, while the Smart Loads port is only powered when excess power is available. Many users choose to put irrigation pumps or EV (electric vehicle) chargers on this port to utilize extra power that the batteries don’t need. The Smart Load port allows for AC coupling, using either microinverters or a separate inverter system to feed in AC power to the 12000XP. This allows for a total of five solar inputs: four through the MPPTs, and one through AC coupling. Input can be up to 62.5A. AC coupling is handy when retrofitting an existing grid-tied solar system with battery backup. AC coupling works similarly to smart load control. When the battery SOC falls below a certain level, the 12000XP automatically diverts the AC coupled solar power to charge the batteries. Once the batteries charge to the user defined limit, the power diverts back to loads instead of battery charging. The 12000XP has advanced safety features such as arc fault protection, reverse polarity protection, and RSD (Rapid Shutdown) capability. The RSD function requires an external emergency shutoff switch wired into the primary inverter, providing compliance with NEC 690.12. Choose EG4’s 12000XP for a powerful UL 1741 certified inverter able to run off-grid residential or light commercial energy systems!

Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.

Before you order

We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.

Ask our team to review your load list before choosing the 12000XP. Message our team on WhatsApp.