EcoFlow DELTA Pro Ultra X vs DELTA Pro Ultra: The Ultimate Comparison and Buying Guide
EcoFlow has redefined the concept of home energy independence. With the original DELTA Pro Ultra, the company proved that a modular, plug-and-play whole-home battery system could deliver performance rivaling traditional wall-mounted installations — at a fraction of the cost.
Now, with the DELTA Pro Ultra X, EcoFlow raises the standard again, introducing higher power, faster installation, expanded circuit control, and the potential for true whole-home coverage in nearly any environment.
This article is the definitive comparison between these two flagship systems. It explains every difference and similarity, the strengths of each, and which system best fits your lifestyle — whether you’re powering a small home, a large property, or preparing for total energy independence.
DELTA Pro Ultra vs DELTA Pro Ultra X Quick Comparison Table
Category
DELTA Pro Ultra
DELTA Pro Ultra X
Core Concept
Modular whole-home backup with Smart Home Panel 2 integration
Full-home backup with higher output, more circuits, and faster installation
Power Output
7.2 kW per inverter, scalable to 21.6 kW
12–36 kW scalable output, surges up to 45 kW
Power Capacity
6–90 kWh (up to 15 stackable batteries)
12–180 kWh (up to 30 plug-in batteries)
Voltage
120V / 240V
200A full-home coverage
Circuits
12 (Smart Home Panel 2)
32 (Smart Home Panel 3) or full-home via Smart Gateway
Switchover
20 ms
< 20 ms
Solar Input
5.6–16.8 kW
Up to 10 kW (≈ 1 h charge from 12 kWh to 80%)
Generator Use
Up to 12 kW via EcoFlow AC Generator Adapter
Charges while powering up to 12 kW via FlowMaster Rectifier
Installation
Modular plug-and-play, < 2 weeks lead time
Floor-standing design, 7-day total install
App & Control
EcoFlow App + Smart Home Panel 2
EcoFlow App + OASIS Portal + PowerInsight 2
Savings claims
≈ $3,600 / yr savings · 2.5 yr payback
≈ $6,000 / yr savings · 3 yr ROI
Durability
LFP battery · –4 °F – 113 °F · IP54
EV-grade cells · dual BMS · heat to 10 °C · 45 °C charge limit
What Both Systems Do Well
Both EcoFlow platforms deliver intelligent whole-home backup, rapid switchover, and solar + generator integration that keep you powered through outages or time-of-use spikes. Each system uses EcoFlow’s advanced app for load scheduling, monitoring, and Storm Guard pre-charging.
Scalability: Modular designs allow you to start small and expand later.
Smart energy automation: EcoFlow modes manage charging, discharging, and storage intelligently.
Durability: Long-life lithium iron phosphate (LFP) or EV-grade cells with thermal stability.
Seamless operation: Sub-20 ms switchover keeps appliances and devices online without reboot.
DELTA Pro Ultra Overview
Output: 7.2 kW per inverter · up to 21.6 kW with three inverters
Capacity: 6–90 kWh (15 stackable batteries)
Voltage: 120 V / 240 V split-phase
Solar: 5.6 kW input per inverter · 16.8 kW with three
Smart Home Panel 2: 12 circuits · 20 ms switchover · single-circuit control
Compatibility: Works with EcoFlow or third-party generators (3–12 kW)
The DELTA Pro Ultra’s plug-and-play modularity lets you scale output and capacity as needed. Its self-heating LFP battery, X-Cooling, and SOC balancing make it a reliable, durable option for both backup and daily energy savings.
DELTA Pro Ultra X Overview
Output: 12–36 kW · surge handling to 45 kW via Adaptive Start
Capacity: 12–180 kWh (30 plug-in batteries)
Solar: Up to 10 kW input · ≈ 1 h recharge from 12 kWh to 80%
Panels: Smart Home Panel 3 (32 circuits) or Smart Gateway (full-home)
The DELTA Pro Ultra X delivers unmatched power, expandability, and installation speed — bringing high-end energy resilience to everyday homeowners.
Real World Scenarios and Recommendations
1. Small Home or Townhouse
Recommended: DELTA Pro Ultra + Smart Home Panel 2
Starts at 6 kWh and 7.2 kW, easily powering lights, TV, fridge, washer, and 3-ton AC. Expandable to 90 kWh with 12-circuit control and 5.6 kW solar per inverter. Ideal for compact homes seeking efficient, modular backup.
2. Suburban Family Home
Recommended: DELTA Pro Ultra X + Smart Home Panel 3
Base 12 kW output expandable to 36 kW across 32 circuits. Adaptive Start handles surges up to 45 kW. Perfect for households running full HVAC, kitchen, and EV loads with 10 kW solar input and 180 kWh capacity ceiling.
3. Large Home with Central AC
4-ton AC: DELTA Pro Ultra (soft starter may be required). 5-ton AC: DELTA Pro Ultra X (Adaptive Start and surge handling built-in).
Ultra X offers more headroom for large systems and eliminates startup overload risk.
4. Rural Property or Off-Grid Cabin
DELTA Pro Ultra: 16.8 kW solar intake and generator compatibility extend runtime for days. DELTA Pro Ultra X: Charges while powering up to 12 kW for virtually unlimited backup.
Ultra X is ideal for multi-day outages; Ultra offers proven modular simplicity.
5. Homeowners Who Plan to Move
Recommended: DELTA Pro Ultra X
Floor-standing, plug-and-play design makes it easy to relocate and reconnect without reinstallation. Portable ground-mounted solar adds flexibility for future homes.
6. EV Households
Recommended: DELTA Pro Ultra
Integrates with PowerPulse EV Charger (9.6 kW) for smart solar and off-peak charging. Maintains emergency backup reserves and coordinates automatically with household loads.
7. Contractors and Mobile Businesses
Recommended: DELTA Pro Ultra X
Up to 36 kW output, generator charging while powering tools, and easy transport between sites make Ultra X the choice for mobile operations.
Installation and Ownership Experience
DELTA Pro Ultra
Options: Smart Home Panel 2, manual transfer switch, or inlet box
Certified installation service with two-day scheduling guarantee
< 2-week lead time from order to commissioning
$200 credit for delayed or missed appointments
Modular, plug-and-play scaling without reinstallation
DELTA Pro Ultra X
7-day total process including 1-day onsite installation
Floor-standing design — no wall mounts required
Quick-connects for Smart Home Panel 3 or Smart Gateway
DIY-friendly, ground-mounted solar setup
System can move with you — simply unplug and reinstall
Using Self-Powered, TOU Mode, and Scheduled Tasks, the Ultra optimizes solar and off-peak energy. Storm Guard ensures full charge before storms. Combined with the 30% IRA credit (if eligible), the Ultra offers exceptional ROI.
DELTA Pro Ultra X: AI-Driven Savings and 3-Year ROI
Ultra X pushes optimization further with AI-based load scheduling and solar forecasting:
Midnight–9 AM: Charges from off-peak grid power
9 AM–5 PM: Powers home via solar and recharges battery
5 PM–Midnight: Runs on stored solar energy
Additional tools like Timed Circuit Control, the OASIS Portal, and PowerInsight 2 visualize usage and automate cost-saving strategies. The system can redirect every watt of excess solar into storage rather than selling back for pennies.
Installation Cost Context
System
Install Cost
Lead Time
Annual Savings
ROI
DELTA Pro Ultra
≈ $2,000
< 2 weeks
≈ $3,600
≈ 2.5 years
DELTA Pro Ultra X
≈ $3,400
7 days
≈ $6,000
≈ 3 years
Traditional Solar Battery
$8,000–$10,000
30–90 days
Variable
8+ years
Pros and Cons Summary
DELTA Pro Ultra
Pros
Modular 6–90 kWh system
7.2 kW per inverter · 21.6 kW max
Up to 16.8 kW solar input
12-circuit SHP2 control · 20 ms switchover
Self-heating, IP54 durability
Generator & EV integration
Cons
Fewer circuits and lower top-end output than Ultra X
DELTA Pro Ultra X
Pros
12–36 kW output, 45 kW surge
12–180 kWh capacity
32 circuits via SHP3
Charges while powering via generator
7-day installation timeline
Deep analytics via OASIS and PowerInsight 2
EV-grade safety with extreme-weather protection
Cons
Higher upfront cost
Which One Should You Choose?
Scenario
Choose
Why
Smaller home or entry-level backup
DELTA Pro Ultra
Lower cost, modular scaling, reliable SHP2 setup
Whole-home 200A coverage
DELTA Pro Ultra X
12–36 kW output with 32 circuits
Long outages or rural living
DELTA Pro Ultra X
Generator charging while powering = unlimited runtime
Heavy HVAC or surge appliances
DELTA Pro Ultra X
Adaptive Start manages up to 45 kW surges
Quick install & portability
DELTA Pro Ultra X
Floor-standing, 7-day install, relocatable
EV charging optimization
DELTA Pro Ultra
Integrates with PowerPulse EV Charger via SHP2
Final Verdict
DELTA Pro Ultra is a proven, modular system ideal for most households. It combines scalability, smart energy management, and strong solar compatibility at exceptional value.
DELTA Pro Ultra X is EcoFlow’s next-level powerhouse — designed for homeowners who want the fastest installation, highest output, and most advanced automation in a truly portable format.
Either system delivers dependable, intelligent, and flexible energy independence for years to come.
About Outbound Power
Outbound Power is an authorized EcoFlow retailer specializing in advanced off-grid and backup power systems for homes, RVs, and commercial applications. We design and deliver complete, installation-ready packages — including portable, solar, and generator integration — so you can power your life anywhere.
Still Need Help Deciding?
Reach out to our friendly power experts and we'll be happy to help!
I do lots of research and Outbound Power had the best deal on what I needed. Surprise surprise. It shipped from the same warehouse as the manufacturer and the warranty works exactly the same. Glad to have found the site.
Hi RG,
Thank you for the kind words! We’re glad your research led you to us and that everything worked out as expected—from pricing to shipping to warranty coverage. We truly appreciate your support and hope you enjoy your new battery pack.
Hi Philip,
Thank you for sharing — we’re glad to hear the Alternator Charger is working perfectly for you! We truly appreciate your support and hope it continues to serve you well.
I can honestly say Outboundpower Company exceeds their mission statement. The word that defines this organization is "Outstanding". The the Quality of products they sell is Outstanding. Their recent price matching is Outstanding by exceeding my expectations and truly customer focused. They really make a difference; a refreshing find these days. Their customers are definitely the most important part and purpose of their work.
In closing, I seldom offer reviews even when asked. However, I was motivated to expend the time and effort to recommend OutBoundPower without reservation; because they truly earned my respect. R. Kaiser
Thank you so much for your incredible review. We’re truly honored by your words. Our entire team works hard to deliver exactly the experience you described, and hearing that we exceeded your expectations means the world to us.
Price beating, product quality, and personal support are core parts of our mission, and it’s deeply gratifying to know they made a real difference for you. Reviews like yours remind us why we do what we do.
Thank you for taking the time to share your experience. Your trust and recommendation are sincerely appreciated. If there’s ever anything more we can do to be of service, we’re here and ready to help.
Just completed a 5 day hunting trip with my new Anker Solix C2000 gen 2 and I am so happy I pulled the trigger on this purchase! I ran all camper lights, fan and charged all of my various electronics (phone, iPad, camera batteries, hand warmers, etc…..) The power station was so much easier and more convenient than my generator. I intentionally used lights and things more than normal to test battery and only charged it once during the trip. I ordered the combo with the extra battery pack but did not receive the extra battery before my trip. Didn’t need it and don’t think I will need it on my hunting trips unless I decide to run an electric heater. Also got some use out of the power station at home today. We ran out of room to cook everything in the kitchen for our thanksgiving meal so I just hooked up our deep fryer to the power station and problem solved! 😁 Love the C2000 so far, excited to try to use it with a solar panel soon.
Thank you for taking the time to leave such a terrific review of your experience with the SOLIX C2000 Gen 2. We are so glad to hear that it was so helpful during your recent hunting trip. We apologize for the delay with the extra battery, but we are happy to hear that it wasn't needed on your trip. We hope you continue to find many uses for the C2000, whether it's on your hunting trips or at home for special occasions like Thanksgiving. We appreciate you!
Thank you for your great website and customer service. I ordered an item that didn’t meet my specific situation, so requested a return. OP responded promptly with their approval and a return shipping label. Ordered another item that met my needs and it was shipped within a week. Great job guys!
Hi Big El,
Really appreciate the awesome 5-star review! Glad we could jump on the return quickly and get you the exact setup you needed. That’s how we like to do things—fast, friendly, and zero hassle.
Thanks again for rolling with Outbound Power. If you need anything at all, we’ve got your back!
Box was banged up , but no damage due to a well packaged product.
Delivered with 30% battery,
charged it up, tried a couple of outlets, and good to go !
Note: the 400w solar panel is way larger, and heavier, than I expected! Probably because I have a smaller one ,but don't know the wattage.
I still have trouble using the solar panel bag as a stand, but it'll be fine.
Hi Joseph,
Thank you for the 5-star review! We’re thrilled to hear you’re enjoying your EcoFlow DELTA 3 Ultra. It’s an incredibly capable unit, and we’re glad it’s meeting your expectations.
If you ever have questions about setup, accessories, or expanding your system, we’re always here to help.
Thank you so much for the 5-star review! We’re thrilled to hear you’re happy with your EcoFlow Dual Fuel Smart Generator 4000. It’s a powerful, reliable unit — a great addition to any backup or off-grid setup.
If you ever need help, have questions, or want to explore ways to expand your system, we’re always here for you.
I have purchased over $20,000 of solar equipment from Outbound Power over several purchases. They have the best pricing and the best hands-on customer service. I always shop other sites but always end up back at Outbound Power. They are awesome!
Thank you, Richard! We’re truly grateful for your continued trust and for choosing Outbound Power for your home energy needs. It means a lot to us that you return each time after comparing options — our goal is always to offer the best prices and the most helpful, hands-on support. We appreciate you and look forward to assisting with your next project!
Great unit and really makes the F3800 the ultimate home backup solution!
I wanted to leave a new review, as support reached out to me and clarified some things I was unclear about. This thing is amazing! It seamlessly switches over to backup power without me noticing, and makes being inconvenienced by power outages a thing of the past. I originally purchased it for just backup power, but I'm finding that I can really offset energy costs by attaching solar panels pretty easily, and building up my solar grid at my own pace.
Support confirmed that the unit can handle 50A when connected to the grid, accommodating a maximum of two F3800s at the same 50A when the power is out. That drops to 25A if you only have one F3800.
Support also took my feedback to enhance the app capabilities, and provide more visibility into the individual component's utilizations. I've been very impressed by their level of support, and am excited to see the improvements they continue to make.
Hi Jeff,
Thank you for taking the time to leave an updated review — we really appreciate it! It’s great to hear that the clarification from support helped and that the Smart Home Power Panel is delivering exactly the seamless, dependable experience you were hoping for. The automatic switchover truly does make outages feel like a non-event.
Your insight about expanding solar at your own pace is spot-on, and we’re glad the flexibility of the system is already helping you offset energy costs. The confirmation on 50A support with two F3800s (and 25A with one) is incredibly valuable information for others considering the setup.
We also love hearing that your app feedback was acknowledged and taken seriously — continuous improvements like those are what make the ecosystem stronger over time.
Thanks again for the thoughtful review and for being an Outbound Power customer. We’re always here if you need anything as you continue to expand your system!
