Product Description

The EG4 12000XP V2 is a high-output all-in-one off-grid inverter delivering 12,000W of continuous split-phase 120/240V power. Per EG4, it utilizes up to 24,000W of solar across two 35A MPPTs, charges a 48V battery bank at up to 250A, and includes a 100A grid input with bypass, a generator port with 2-wire auto-start, and a programmable Smart Port for load control or AC coupling — all in one wall-mounted unit.

Who This Is For

Full-size off-grid homes and working properties that run heavy simultaneous loads — central air, well pump, range, and shop equipment at the same time. Per EG4, it can start a 5-ton air conditioner without a soft-start kit. If your loads are cabin-scale, the EG4 6000XP pairs with the same 48V batteries in a smaller package. Like all XP-series inverters, the 12000XP V2 is for people who do not need to sell power back to the utility.

Key Features

  • 12,000W continuous split-phase 120/240V output, with 15,360W surge (~10 s) per EG4's spec sheet — starts a 5-ton AC without a soft start per EG4
  • Up to 24,000W of utilized PV across two 35A MPPTs (44A Isc each), 120–385 VDC MPPT range
  • Up to 250A of 48V battery charging with closed-loop communications for compatible lithium batteries
  • 100A grid input with 100A bypass, plus a dedicated generator port with 2-wire start/stop auto-start per EG4
  • Programmable Smart Port for smart load control or AC coupling per EG4
  • Parallel up to 16 units per EG4 for expanding systems
  • EG4 Connect monitoring over Wi-Fi, with RS485 and CAN ports; UL 1741 and FCC Part 15 Class B per EG4's spec sheet

Why EG4

EG4 Electronics is a US-based manufacturer that publishes complete spec sheets, manuals, and system wiring diagrams and maintains US-based technical support. Inverters and batteries are engineered as one ecosystem with closed-loop communications, so charging follows the battery BMS data rather than voltage guesswork.

Specifications

Specifications below are per EG4's published 12000XP spec sheet and product page (model IV-12000-XP; SKU EG4INV12KXPV2US).

Continuous output 12,000W, split-phase 120/240VAC (120/208VAC supported)
Surge capacity 15,360W (~10 s, battery)
PV input 24,000W max utilized, 2 MPPTs
MPPT voltage range 120–385 VDC (max input 500 VDC)
PV current per MPPT 35A rated / 44A short-circuit (Isc)
Battery voltage 48V nominal; 46.4–60 VDC lithium (38.4–60 VDC lead-acid)
Max charge current 250A
Grid input Up to 100A @ 240VAC, with 100A bypass
Generator input Dedicated port with 2-wire start/stop auto-start
Smart Port Programmable for smart load control or AC coupling
Transfer time <10 ms single / <20 ms parallel
Idle consumption <70W
MPPT efficiency 99%
Parallel capability Up to 16 units
Certifications UL 1741; FCC Part 15 Class B
Enclosure / environment IP20 (indoor); 32–113 °F at full load
Dimensions / weight 34.25 x 20.87 x 5.91 in; 104.7 lb
Communications / monitoring RS485, CAN, Wi-Fi; EG4 Connect app
Warranty 5 years per EG4 (registration required within first year)
SKU INV030

Off-Grid by Design

The 12000XP V2 does not export power to the utility grid — EG4 positions it for installations that do not require grid sellback. In practice: the 100A grid input charges batteries and passes utility power through to your loads when you want it, but solar production is never pushed onto the utility's lines, so there is no net metering and no export-related interconnection agreement for the inverter to maintain. Excess solar beyond loads and charging is curtailed. If exporting to the grid — where your utility approves it — is part of your plan, look at the EG4 FlexBOSS21 or 18kPV hybrids instead. Local permits and code compliance still apply to any installation.

Battery Compatibility

Designed for 48V banks with closed-loop communications to EG4 batteries. With 250A of charge current available, larger banks make sense: the EG4 WallMount 314Ah all-weather battery (16 kWh) and the EG4 WallMount 314Ah indoor battery (16 kWh, self-heating) can be combined to build the 30+ kWh of storage most 12 kW systems carry. Lead-acid is supported within the published voltage range.

Installation

The unit is wall-mounted, weighs 104.7 lb, and is rated IP20 — plan an indoor or weather-protected mechanical space. Landing 12 kW of split-phase output, a 100A grid input, and 250A of battery cabling is licensed-electrician work, and permits are required in most jurisdictions even for off-grid systems. The generator port's 2-wire start should be commissioned against your generator's controller.

Warranty & Support

Per EG4, the 12000XP carries a 5-year warranty; EG4 requires registration within the first year of purchase or proof of purchase from an authorized distributor. OffGrid Horizon is a family-owned authorized EG4 dealer — call (302) 496-3554 and a real person will help with sizing, commissioning questions, or a warranty claim.

Shipping

Ships within the contiguous United States. At roughly 105 lb boxed, this unit typically ships LTL freight on a pallet. Inspect the packaging before signing the delivery receipt and note any damage with the driver; contact us immediately if anything is off.

Frequently Asked Questions

Is this the V2?

Yes — this listing is the current V2 revision (EG4 SKU EG4INV12KXPV2US).

Can it sell power back to the grid?

No. Per EG4 the 12000XP is for installations that do not require grid sellback. The grid input is for charging and pass-through only.

Will it start my air conditioner?

Per EG4, the 12000XP can start a 5-ton AC unit without a soft start.

How much battery should I put behind it?

Size storage to your daily consumption, not the inverter rating — a 12 kW inverter can drain a small bank quickly. Most systems this size run 30 kWh or more; two or more 16 kWh WallMount units is a common starting point.

Does it work with a generator?

Yes — a dedicated generator port with 2-wire start/stop auto-start lets the inverter start and stop a compatible generator automatically for charging.

Can I parallel more than one?

Per EG4, up to 16 units can be paralleled.

What is the Smart Port?

A programmable port EG4 provides for smart load control or AC-coupling an existing grid-tie array into the system.

Planning a whole-home off-grid build? Call OffGrid Horizon at (302) 496-3554 — family-owned, authorized EG4 dealer — or browse the full EG4 collection.

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