Portable EcoFlow DELTA Pro Ultra inverter

EcoFlow DELTA Pro Ultra Portable Inverter

Be ready for unexpected outages, cut your electricity costs, and keep essential devices running when it matters most. The EcoFlow DELTA Pro Ultra is a powerful portable inverter that, when paired with one or more batteries sold separately, becomes a high-performance and scalable portable power station for home backup, off-grid living, travel, and hobby use. With up to 6900 W output power, 5600 W solar input, and an online UPS function, it is built to handle demanding applications with ease.

Please note: the inverter operates only when connected to a compatible battery.

Why choose the EcoFlow DELTA Pro Ultra?

• Up to 6900 W continuous output power and 10300 W surge power for demanding appliances
• Expandable energy storage up to 30 kWh with DELTA Pro Ultra EB batteries
• Dual PV input with up to 5600 W solar charging
• Online UPS switching in under 20 ms for reliable emergency backup
• Multiple charging options: solar, wall outlet, generator, and EV charging station
• Quiet operation and modular design for flexible placement
• App control via EcoFlow with real-time monitoring and smart energy management
• Weather-ready construction with IP54 protection and auto-heating

Up to 6900 W of power – run almost anything

Thanks to X-Fusion technology, the DELTA Pro Ultra delivers up to 6900 W continuous output and as much as 10300 W surge power for up to 10 seconds, even while charging. That means it can power multiple high-demand devices at the same time, including washing machines, dryers, heat pumps, and air conditioners.

Scalable up to 30 kWh – build the setup you need

The inverter works with EcoFlow DELTA Pro Ultra EB batteries sold separately. Each battery offers 6 kWh of capacity, giving you hours of backup power for key devices and appliances. Need more? Expand your system with up to five battery units for a total capacity of 30 kWh. The modular design makes expansion simple and tool-free.

Create a high-performance solar power system

The DELTA Pro Ultra features two PV inputs: one low-voltage input up to 150 V and one high-voltage input up to 450 V. This allows you to connect up to ten 400 W solar panels and achieve up to 5600 W total solar input (4000 W + 1600 W). Power your gear with clean solar energy and reduce your reliance on the grid.

Flexible charging options for maximum convenience

The DELTA Pro Ultra system gives you several ways to recharge your batteries depending on your setup and conditions. You can charge from solar panels, an EV charging station, a generator, or a standard wall outlet. Dual-source charging is also available, combining PV + grid input for up to 8800 W max input power.

• Solar charging: up to 4000 W or 1600 W depending on input
• EV charging station: up to 6900 W
• Generator input: up to 2800 W
• Wall outlet charging: up to 2800 W
• Dual charging: up to 8800 W

You also won’t have to wait long before getting back up and running. Charging one battery to 80% takes about 1 hour and 13 minutes, while two batteries can recharge to 100% in as little as 2 hours.

Easy integration with your home electrical setup

When used with the separately available MTS (Manual Transfer Switch), the DELTA Pro Ultra can support your home electrical installation with greater flexibility. Easily switch between grid power and the EcoFlow system to use stored solar energy at night, improve energy independence, and stay prepared for emergencies.

Reliable UPS emergency backup

Unexpected blackout? No problem. When configured as a complete power station with battery and inverter, the DELTA Pro Ultra supports an online UPS function with switchover in under 20 ms. This helps keep sensitive devices such as refrigerators, computers, and other critical electronics running without interruption.

Smart control with the EcoFlow app

Use the EcoFlow app to monitor and manage your power system in real time. Check power consumption, battery status, charging activity, and more. The intuitive interface also lets you automate charging and discharging schedules, adjust operating modes, and optimize the system for your daily energy needs. The app is compatible with platforms such as Google, Shelly, Tapo, and Kasa Smart.

Built for demanding conditions

The EcoFlow DELTA Pro Ultra is designed to perform in challenging environments. It features auto-heating, allowing reliable operation in temperatures from -20°C to 45°C. It also includes an X-Cooling system and offers IP54-rated protection against dust and splashes. The high-quality LFP battery chemistry, together with BMS protection and SOC cell balancing technology, helps ensure long service life and dependable performance.

Thoughtful design and whisper-quiet operation

From a house or cabin to road trips, workshops, events, and hobby projects, the DELTA Pro Ultra fits into almost any scenario. Its modular design and optional transport trolley make it easier to move wherever power is needed. It is also impressively quiet: at loads below 2000 W, the noise level is 0 dB, and even under heavier use it stays below 30 dB, roughly comparable to a whisper.

Save more on electricity bills

The DELTA Pro Ultra system can help reduce energy costs in a practical way. In self-powered mode, it prioritizes solar energy first and only draws from the grid when needed. With scheduled charging and discharging, you can better manage when and how you use electricity, improving efficiency and lowering utility bills.

What’s in the box

• Inverter
• Portable base
• Support feet x4
• M6*20 screws x4
• Side wheels x4
• Assembly and disassembly tool
• EcoFlow solar cable for Low-PV port
• AC charging cable
• User manual and warranty card