EcoFlow DELTA Pro Ultra X is a whole-home² backup system. With 12kW output, it even can power a 5-ton AC¹, keeping your home powered through storms, blackouts, and future moves.
EcoFlow DELTA Pro Ultra X
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EcoFlow DELTA Pro Ultra X
Whole-Home¹ Power. Unbound.
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World-Class Performance
Plug & Play Power.
EcoFlow DELTA Pro Ultra X is a whole-home² backup system. With 12kW output, it even can power a 5-ton AC¹, keeping your home powered through storms, blackouts, and future moves.
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SystemInstallationReliabilityInvestmentSafetyEco-system
DELTA Pro Ultra X Available Now: Claim Your Early-Bird Offer!
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Pre-order Customers, Your $1,000 Off Awaits
Up to 12 Months Interest-Free
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Massive Capacity & Output
12–36kW Output³ · 12–180kWh Capacity³ · Generator-Compatible for Unlimited Runtime⁴
- 12-36 kWOutput⁵
- 100ASmart electric panel⁶
- 12-180 kWhCapacity⁵
- 100%Generator compatibility⁶
High Power, High IQ
DELTA Pro Ultra X delivers 12 kW⁷ of power. With a new Adaptive Start algorithm, it intelligently identifies connected appliances and tailors startup for each, seamlessly handling surges up to 45kW and high-demand appliances like a 5-ton AC.
Get Through Any Outage
- 12–180kWh⁹ Capacity—Power That Lasts
- Generator-Ready for Unlimited Backup
- 10kW Solar Surge
Start with 12kWh. Scale instantly to 180kWh.⁹
With up to 30 plug-in expansion batteries—no tools, no hassle. Power grows with your needs.
Plug your generator into DELTA Pro Ultra X for seamless backup⁷.
With the EcoFlow FlowMaster Generator Rectifier, you can charge while delivering up to 12kW output—no downtime, no compromise. Compatible with all major portable generators⁸.
Take in 10kW solar input—Enough to recharge 12kWh to 80% in approximately 1 hour.⁹
Even during storm season, enjoy a full daily recharge and steady, unshakeable energy.
See other ways to connect DELTA Pro Ultra X to your home
Connect via Inlet box
Connect DELTA Pro Ultra X via standard inlet box to your home for instant whole-home backup.
Connect via Transfer Switch
Integrate DELTA Pro Ultra X with a standard transfer switch. Safely power essential circuits during outages—no extra wiring needed.
Smart & Reliable
When It Matters Most
Auto-Recharging · Auto Switchover 11 · Intelligent Control
Long-Term Value.
Invest in Your Future.
Saving Up to $4,000/Year²
4.5-Year ROI²
Saveup to
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Your 24/7 Money Saver
Here's a Typical Day of Savings
Day and night, the system intelligently shifts between solar, storage, and off-peak rates—maximizing every watt to get you the best deal. Here's what that might look like on a typical day of use.
Midnight – 9 AM: AI-TOU Savings
The system uses TOU electricity rates and solar forecasting to intelligently optimize charge times and save you money.
9 AM – 5 PM: Self-Powered & Automated Savings
Solar will run your appliances and charge the system batteries. Timed Circuit Control11—Schedule up to all the circuits to turn on or off automatically—so you only use energy where it’s needed.
5 PM – Midnight: Solar at Work
Uses stored solar to run your entire home. Plug your EcoFlow PowerPulse EV charger directly into Smart Home Panel 3 or Smart Gateway to save even more.
Compatible with Existing Rooftop Solar12
No Wasted Watts
With the EcoFlow Current Sense Transformer, every extra watt is redirected to your DELTA Pro Ultra X battery—never wasted or sold back to the grid for pennies.
The Highest Safety Standards
The first15 EV-grade full-tab cells deliver higher capacity with lower resistance, less heat, and longer-lasting performance.
25% More
Efficient power flow16
(thanks to lower resistance: 1.5 mΩ vs. 2 mΩ)
25% Less
Self-Heating16
1/10,000 Precision Screening17
Perfectly matched cells ensure identical capacity, voltage, and resistance, minimizing wear and maximizing battery life.
24/7 Self-Maintenance18
Automatic SOC balancing maximizes efficiency across the battery’s entire lifespan.
Local BMS – X-Guard® System
44+ safeguards19 and comprehensive monitoring ensures all-around safety.
Safeguards: overcharge/discharge, extreme temperatures, short circuits, component failures, and more.
Cloud BMS – Big Data Protection
100+ anomaly19 detectors run 24/7, with instant alerts, local service response, and remote emergency support.
Power Protection
1.2M circuit samples/sec, millisecond-level anomaly detection20
Connection Monitoring
Intelligent cable and interface safeguards track heat, recognize faults, and allow instant shutdown for total electrical security.
Load Isolation
Continuous voltage/current monitoring with triple-layer isolation. Faulty devices are cut off automatically while critical loads stay powered.
Heat batteries to 10°C（50°F）21 in extreme cold for safe charging and longer runtime, while high-temp protection allows charging even at up to 45°C (113°F)21.
EV-Grade Full-Tab Cells
Durable Battery Pack
Dual BMS Protection
3-Level System Safety Architecture
Smart Extreme-Weather Protection
The first15 EV-grade full-tab cells deliver higher capacity with lower resistance, less heat, and longer-lasting performance.
25% More16: Efficient power flow (thanks to lower resistance: 1.5 mΩ vs. 2 mΩ) 16
25% Less16: Self-Heating
Always Connected. Always in Control.
EcoFlow OASIS: AI-Optimized Insights
Click here to explore our special plan for expert users.