EG4 6000XP vs 12000XP: Specifications Side by Side and What We Have Run

The 6000XP and 12000XP compared on EG4's own spec sheets, with what we have run on each. Not a recommendation.

Last reviewed 2026-10-12.

What the manufacturer documents

• EG4's 6000XP specification sheet, version 1.4.4, lists a nominal output of 6000 W, a maximum continuous output current of 25 A at 240 V, and surge capacity of 12,000 W for about 3.5 seconds or 11,000 W for about 5 seconds. (eg4electronics.com)
• The 6000XP sheet lists two MPPTs with one input each, a maximum usable input current of 17 A per MPPT, a maximum utilized solar power of 8000 W (4000 W per MPPT) and a recommended maximum solar input of 10,000 W. (eg4electronics.com)
• EG4's 12000XP specification sheet, version 1.2.6, covers model numbers IV-12000-XP-IN-01 and IV-15000-XP-IN-01. At 240 V it lists a nominal output of 12,000 W without PV, and 15,000 W with PV on the IV-15000-XP-IN-01 model only; at 208 V it lists 12,000 W without PV and 13,000 W with PV. Its footnote says previous models are limited to 12 kW nominal output. (eg4electronics.com)
• The 12000XP sheet lists a maximum continuous output current of 62.5 A at 240 V (50 A on previous models, per its footnote), surge capacity of 15,360 W for about 10 seconds with battery only, two MPPTs with two inputs each, a maximum usable input current of 35 A per MPPT, a maximum utilized solar power of 24,000 W (12,000 W per MPPT) and a recommended maximum solar input of 28,000 W. (eg4electronics.com)
• EG4's 15 kW update document for the 12000XP says the 15 kW output uses both battery and solar power because the battery circuitry alone supports a maximum continuous draw of 12 kW, and that the update applies only to model IV-15000-XP-IN-01. (eg4electronics.com)
• The 6000XP sheet lists a maximum discharge current of 140 A, a maximum charge current of 125 A at 48 V from PV and 115 A at 48 V from AC, and a recommended battery capacity of more than 200 Ah per inverter. (eg4electronics.com)
• The 12000XP sheet lists 250 A maximum charge and discharge current, 12,000 W maximum charge and discharge power and a recommended battery capacity of more than 400 Ah per inverter. (eg4electronics.com)
• The 6000XP sheet lists a maximum continuous AC input current of 37.5 A at 240 V and a maximum AC input power of 9000 W. (eg4electronics.com)
• The 12000XP sheet lists 100 A at 240 V from the grid, 62.5 A at 240 V from a generator and a maximum AC input power of 24,000 W. (eg4electronics.com)
• The 6000XP sheet lists a weight of 52.9 lbs and dimensions of 18 by 25.5 by 5.25 in. (eg4electronics.com)
• The 12000XP sheet lists 104.7 lbs and 34.25 by 20.87 by 5.91 in. (eg4electronics.com)
• The 6000XP sheet lists a 5-year standard warranty, an IP20 ingress rating, UL1741, up to 16 units in parallel, an operating temperature of 0 to 45 C and an altitude limit below 2000 m. (eg4electronics.com)
• The 12000XP sheet lists the same: a 5-year standard warranty, IP20, UL1741, up to 16 units in parallel, an operating temperature of 0 to 45 C at full load and an altitude limit below 2000 m. (eg4electronics.com)

What happened to us

• We have run a 6000XP long term. Its idle consumption running from the battery with loads off was about 50 W (battery mostly charged, room temperature), a figure from our own measurement that the owner confirmed. (video)
• We charged a Tesla through a Generation 3 Tesla Wall Connector from a single 6000XP at night with no solar input. During the video the charger's current readout rose from about 5 A to about 24 A, and the inverter's display showed it about 94 percent loaded with the charger at about 24 A. An app reading at another moment showed about 5600 W out of the batteries and about 5300 W on the AC output; these are inverter readings, not a measurement of power reaching the car. Other circuits on the inverter's output had been switched off for the later readings. The batteries were two EG4 WallMount Indoor batteries in parallel with other EG4 batteries, and the two WallMounts each showed about 30 A. The video does not show how long the load ran, so we did not establish sustained charging. (video)
• In a load test of our first-generation 12000XP (the generation is the owner's confirmation; no model number was recorded) we saw roughly 12,000 W coming out of the batteries, about 11,500 W going to the AC side, and a Tesla wall charger charging at about 47 to 48 A. (video)
• In that test a clamp meter on the battery cables read about 245 to 246 A. The clamp's jaws were slightly too small for the cables, so the reading is approximate. (video)
• The 12000XP in that test was fed by a mix of EG4 batteries in parallel, including WallMount Indoor, LifePower4 V2 and LL batteries and a rack of other lithium batteries, and the communication was not working for every battery. (video)
• A heat pump was on for a little while during the test and the inverter kept running. It was 9 PM with no solar input. (video)

Specifications side by side

What we did not verify

• This page compares manufacturer specifications. The only figures that come from our own use are the ones under 'What happened to us'. We make no claim about which inverter suits any system.
• EG4's specification sheets change over time; the versions cited here are 1.4.4 for the 6000XP and 1.2.6 for the 12000XP.
• The 12000XP in our video is the first generation, before EG4's 15 kW model, and its model number was not recorded. We have not run the 15 kW model, and we have not checked that our unit's specifications match the sheet for a particular model number.
• The 12000XP load test was a single test of one setup. The clamp meter reading is approximate and we did not record the firmware or settings.
• The 6000XP Tesla charging is one short test of one vehicle and one charger. The readings are from inverter and app screens at different moments, they are approximate, and we did not establish sustained charging. Tesla's own documents are not cited on this page, so we make no statement about what the charger or the car documents or allows.
• We have not tested the 6000XP and the 12000XP side by side. The standby figures in the table are EG4's, each under the conditions its sheet states, and they are not directly comparable; our own measured battery-idle figure is for the 6000XP only.
• Sizing a battery bank, solar array, wiring or protection for either inverter is work for a licensed professional using the manufacturer's current documents.

Questions and answers

What is the main difference in output between the two?

EG4's sheets list 6000 W nominal for the 6000XP and, at 240 V, 12,000 W nominal for the 12000XP, or 15,000 W with PV on the IV-15000-XP-IN-01 model.

How much solar can each one use?

EG4 lists a maximum utilized solar power of 8000 W for the 6000XP and 24,000 W for the 12000XP.

Do both inverters have the same warranty?

Both sheets list a 5-year standard warranty.

Is there a newer 12000XP than the one you ran?

EG4's specification sheet lists model IV-15000-XP-IN-01 with 15,000 W output at 240 V when PV is available. Ours is a first-generation 12000XP and we have not run the newer model.

Did you charge a Tesla from the 6000XP?

Yes, once, in a short test. The charger's current readout reached about 24 A and the inverter's display showed it about 94 percent loaded. The video does not show how long the load ran, so we cannot say whether it could be sustained. This is not a statement that the 6000XP is suited to charging an electric vehicle.

Which one should I buy?

We do not make that recommendation. Their specifications are listed above, and the right choice depends on your loads and system, which a licensed professional can size.

Sources

• EG4 6000XP specification sheet, version 1.4.4 (EG4)
• EG4 12000XP specification sheet, version 1.2.6 (EG4)
• EG4 12000XP increased power update, version 1.0 (EG4)

Videos this comes from

• EG4 6000XP off grid Inverter long term Review | 8000W PV | 480V VOC | 48V 120/240V Split Phase – Our long-term review of the 6000XP
• Level 2 Charging Tesla off-grid with solar | EG4 6000xp & Indoor Wallmount batteries offgrid – A single 6000XP charging a Tesla
• #eg4 12000XP #offgrid #inverter Level 2 full charging #tesla | Tesla wall charger 48A – A 12000XP running a heavy load
• Unleashing 12,000 Watts Our Epic Load Test Results #energysolutions #tesla – Short from the same 12000XP load test

Related topics

• EG4 6000XP and 12000XP Inverters

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