EcoFlow DELTA Pro Ultra Inverter is a next-generation home energy system built for total power security and energy independence. With an expandable capacity from 6kWh to 90kWh, it delivers up to 30 days of essential power, ensuring your home stays running through extended outages. Supporting both 120V and 240V outputs and delivering up to 21.6kW of power, it can handle every major appliance—from lights and refrigerators to central air conditioners—with ease.

Engineered for flexibility, DELTA Pro Ultra features record-setting solar input up to 16.8kW, ultra-fast 8,800W multi-source charging, and compatibility with gas generators, EV charging piles, and the grid. It's an online UPS with 0-ms switchover that keeps critical devices protected without interruption, while its silent backup mode ensures quiet operation during low-power usage.

Rugged, compact, and intelligently designed, EcoFlow DELTA Pro Ultra integrates advanced LFP battery technology, real-time energy management, and plug-and-play expandability, making it the ultimate solution for whole-home backup, off-grid living, and sustainable energy use.

Expandable Capacity (6kWh–90kWh)

Customize your backup system to fit your power needs—from a basic 6kWh setup to a massive 90kWh battery bank. That’s up to 30 days of essential power for devices like lights, refrigerators, routers, and medical equipment.

Massive Power Output (7.2kW–21.6kW, 120V/240V)

Power every appliance in your home with up to 7.2kW from a single unit or 21.6kW with three inverters. Runs high-demand devices like central air conditioners, water heaters, and electric stoves with ease. Constant 7200W output is ensured via X-Fusion™ technology.

Industry-Leading Solar Input (5.6kW–16.8kW)

Harvest a full day’s worth of energy in just one hour with record-setting solar input. Supports high- and low-voltage PV systems, whether using portable solar panels or rooftop arrays.

Versatile Charging Options

Recharge using solar, the grid, gas generators, or even an EV charging pile. With 8800W of multi-source input, charge two batteries in just 2 hours, making it one of the fastest charging systems available.

Seamless Power with 0-ms Online UPS

Never notice a power outage—thanks to 0ms switchover for sensitive devices like servers, CPAP machines, and medical gear. Ensures uninterrupted power delivery during blackouts.

Silent Backup Operation (0 dB at <2000W)

For low-power use (under 2000W), the DELTA Pro Ultra operates silently at 0 decibels, perfect for nighttime use or quiet environments. Silent mode supports loads for up to 30 minutes without fan noise.

Advanced Battery Technology with BMS

Equipped with LFP battery chemistry and a smart Battery Management System, delivering 3500+ cycles to 80 percent capacity. Engineered for safety, performance, and long-term reliability.

Extreme Weather Performance

Operates in temperatures from -4 degrees F to 113 degrees F, ensuring reliable backup during harsh winters or extreme heat. Built to perform even in unpredictable conditions.

Modular and Stackable Design

Compact, space-saving, and easy to install in garages, basements, or utility closets. Stack batteries and inverters to scale up your system without taking up extra space.

Smart Monitoring and Control

Connect via Wi-Fi, Bluetooth, or 4G to monitor and control power usage, charging sources, and system performance from anywhere using the EcoFlow app.

Durable and Weather-Resistant (IP54 Rated)

Rugged design with IP54 protection, making it resistant to dust and water splashes—ideal for indoor and semi-outdoor installations.