EcoFlow DELTA Pro Ultra Inverter (7,200W, 120V/240V)
This is the brain of a DELTA Pro Ultra system: 7,200W of pure sine wave output at true 120V/240V split phase, which means it can drive a well pump, an electric range or a central air conditioner rather than just a handful of circuits. Pair it with DELTA Pro Ultra batteries for storage and it becomes a whole-home backup system.
It accepts 5,600W of solar across two inputs, charges from the grid, a generator or an EV charger, and switches to backup in under 20 milliseconds — or with no interruption at all in online UPS mode. Three inverters can run in parallel for 21.6kW and 16.8kW of solar. IP54 sealed, with Bluetooth, Wi-Fi and 4G connectivity built in. Renewable Outdoors is an authorized EcoFlow dealer — call us at (303) 876-7654 and we'll size the system against your panel.
5-Year Warranty
Lowest Price Guarantee
Authorized EcoFlow Dealer
Free Shipping
0% APR Financing
Expert Support: (303) 876-7654
Why the DELTA Pro Ultra Inverter
7,200W at 120V/240V
True split phase from a single unit, with 10.8kW of surge headroom for motor startup — well pumps, compressors, table saws.
5,600W of Solar Input
Two solar inputs: a 4,000W high-voltage port and a 1,600W low-voltage port, so both string arrays and portable panels work.
Parallel to 21.6kW
Three inverters combine for 21.6kW of output and 16.8kW of solar, backed by up to 90kWh of battery.
Under 20ms Switchover
Backup UPS mode transfers in under 20 milliseconds; online UPS mode runs your loads with zero interruption.
Charges From Grid, Generator or EV
AC charging at 120V or 240V, generator input, and EV charging support — up to 8,800W of combined charging.
Bluetooth, Wi-Fi and 4G
Built-in 4G means you can still see and control the system when your home internet is down with the power.
What's Included
In the Box
1 × EcoFlow DELTA Pro Ultra Inverter
1 × EcoFlow Portable Stand and 4 × Supporting Legs (with 4 × M6×20 screws)
4 × EcoFlow Side Mount Casters
1 × EcoFlow Disassembly and Assembly Tool
1 × Solar to Low-PV Port Charging Cable
1 × AC Charging Cable (C20)
User manual and warranty card
The inverter needs at least one DELTA Pro Ultra battery to store energy — it has no capacity of its own. Tying it into your home's circuits requires either a transfer switch or a Smart Home Panel, plus a licensed electrician. Call us at (303) 876-7654 and we'll list out everything your installation needs.
DELTA Pro Ultra Inverter Specifications
AC Output
Pure sine wave, 7,200W total, 120V/240V 60Hz
Surge Output
Up to 10.8kW
Parallel Capability
Up to 3 inverters — 21.6kW total output
Solar Input
5,600W across two ports: High-PV 4,000W max, Low-PV 1,600W max
Solar Input (3-inverter system)
Up to 16.8kW
AC Charging Input
100–120V 15A; 200–240V 12.5A, 50/60Hz
AC Bypass
100–120V 15A, 50/60Hz (limited to under 3 hours when current exceeds 12A)
Combined Charging
Up to 8,800W including generator and EV charging
DC Output
12.6V, 30A — 378W max
USB-A Output
2 × 5V 2.4A, 12W max per port (24W total)
USB-C Output
2 × 5/9/12/15/20V 5A, 100W max per port (200W total)
Switchover Time
Backup UPS under 20ms; online UPS 0ms
Battery Compatibility
DELTA Pro Ultra Battery — up to 5 per inverter (30kWh), 15 per system (90kWh)
Every DELTA Pro Ultra Inverter we sell is backed by EcoFlow's 5-year limited warranty.
Lowest Price Guarantee
Found it cheaper elsewhere? Call us at (303) 876-7654 before you buy.
Authorized EcoFlow Dealer
Genuine EcoFlow hardware with full manufacturer support behind it.
EcoFlow DELTA Pro Ultra Inverter (7,200W, 120V/240V): Frequently Asked Questions
Does this inverter come with a battery?
No — this listing is the inverter on its own. It converts stored energy into household power but holds none itself, so you need at least one DELTA Pro Ultra Battery alongside it. We sell those separately in 1, 2 and 3 packs, and we're happy to build the combination for you on (303) 876-7654.
What does 120V/240V split phase actually give me?
It means the inverter produces the same two-leg 240V supply your utility does, so it can run 240V appliances directly — a well pump, an electric dryer, a range, a central air conditioner — as well as ordinary 120V circuits. Many portable power stations are 120V only and need a second unit plus a hub to reach 240V. This does it from one box.
How much can it actually run at once?
7,200W continuous, with 10.8kW of surge headroom for the moment a motor starts. That's enough for a well pump plus a fridge plus lighting plus a microwave. If your load list is bigger than that, up to three inverters run in parallel for 21.6kW.
How much solar can I connect?
5,600W per inverter, split across a 4,000W high-voltage input designed for string arrays and a 1,600W low-voltage input for portable panels. Across three inverters that becomes 16.8kW. We stock EcoFlow's rigid and bifacial panels and can size an array to your roof.
How fast does it switch over when the power goes out?
Under 20 milliseconds in backup UPS mode, which is fast enough that computers, networking gear and most home electronics never notice. In online UPS mode there's no interruption at all, because your loads are always being fed by the inverter.
Do I need an electrician?
For the inverter and batteries themselves, no — they connect to each other with the supplied cables. But connecting the system to your home's circuits, whether through a transfer switch or an EcoFlow Smart Home Panel, is service-entrance work that needs a licensed electrician and usually a permit. We can talk you through the options before you book one.
Can I put it in the garage or outside?
The garage, yes — it's IP54 rated and specified from −4°F to 113°F, and it ships with casters and a stand so it can be rolled into position. IP54 means dust-protected and splash-resistant, not weatherproof, so it shouldn't be exposed to rain or snow directly.
Can I run it as a generator replacement while camping or on a job site?
Yes, and it's very good at it — 7,200W with no fuel, no fumes and no noise. It's heavy at 70 lbs for the inverter plus 111.8 lbs per battery, so it's a wheel-it-into-place proposition rather than something you carry. The included casters help.
What connectivity does it have, and does it work when my internet is down?
Bluetooth, Wi-Fi and 4G. The 4G radio is the important one: when a storm takes out your power and your internet together, you can still monitor and control the system from the EcoFlow app on your phone.
Do you offer financing or price matching?
Yes. We offer 0% APR financing options through Affirm at checkout, and our Lowest Price Guarantee applies — if you find this inverter cheaper at another authorized dealer, call us at (303) 876-7654 before you order and we'll take care of it.