Head-to-head test
EcoFlow DELTA 3000 Gen4 vs EcoFlow DELTA Pro Ultra XThe House Battery Has No USB Port. Do You Need the House?
The Ultra X runs a house and the DELTA 4 (3000) runs a short list, and the short list is the cheaper energy over the cells' life. I'd buy the DELTA 4 (3000) for a fridge, the router and the lights through a night, and the Ultra X only if something on 240 V has to keep running or your outages last for days.
Black Friday · 23 days out
Price to beat:DELTA Pro Ultra X $7,699
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Full profiles: EcoFlow DELTA 3000 Gen4 → · EcoFlow DELTA Pro Ultra X →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunner’s take
Whole-Home Backup Tester
One of these runs a short list, and the other runs the house.
The DELTA 4 (3000) puts 3,072 Wh and 3,600 W of 120 V output in a 57.3 lb box with a handle at each endA7. The DELTA Pro Ultra X holds exactly four times the battery, runs 12,000 W at 120 and 240 VB1, and weighs 298.7 lb across its boxes. EcoFlow sells it on a quick-connect installB4.
Per watt-hour on the box, the two sit closer than their prices look.
The DELTA 4 (3000) lists at $1,699 and the Ultra X at $7,999, yet the Ultra X costs only a little more per watt-hour of battery. Over the cells' rated life the smaller box is about half the cost per kWh, because EcoFlow rates it for 6,000 cycles against 3,500. What the Ultra X's money buys is the inverter, the 240 V side and a roof's worth of solar input.
So walk your panel before you shop.
A well pump, central air or an electric range sits on a two-pole breaker and wants 240 V, and only the Ultra X has a 240 V outlet. If the list is a fridge, the router, a CPAP and the lights, the DELTA 4 (3000) gets through our eight-hour blackout with 966 Wh still in it. EcoFlow ships it in early DecemberA10.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
Outages measured in hours are the DELTA 4's job, and outages measured in days are the Ultra X's. There's no middle setting on this page, because the 3000 can't take a second batteryA6. What you buy on day one is what you have on day four.
DELTA 4 (3000): 3,072 Wh, no extra-battery portA6DELTA Pro Ultra X: 12,288 Wh base8-Hour Blackout (1,645 Wh): the DELTA 4 (3000) ends with 966 Wh, the Ultra X with 8,800 Wh
Why it mattersIf your outages have lasted hours, buy the small one; if they've lasted days, the choice is the Ultra X, a big solar array or a generator.
continuous output
Central air, a deep well pump and an electric range don't connect to anything the DELTA 4 (3000) has. More battery wouldn't change that. The Ultra X's 240 V side is the only thing on this page that runs them.
DELTA 4 (3000): 3,600 W continuous, 7,200 W surge, 120 V outputA2DELTA Pro Ultra X: 12,000 W continuous, 45,000 W surge, 240 V outletsEcoFlow pitches the Ultra X for every circuit, a 5-ton air conditioner includedB1
Why it mattersCount the two-pole breakers that feed something you can't live without; one is enough to send you to the Ultra X.
rated cycles
The buyer who cycles every day is usually living on solar, and that buyer runs into the 3000's single 1,000 W inputA5 long before the cycle rating counts. The Ultra X takes ten times the panels. The cheap lifetime kWh is real, and it belongs to a backup box.
DELTA 4 (3000): rated for 6,000 cyclesDELTA Pro Ultra X: rated for 3,500 cyclesDELTA 4 (3000): one 1,000 W solar inputA5; DELTA Pro Ultra X: up to 10,000 W of solar
Why it mattersLiving on solar every day, weigh the Ultra X's input over its cost per kWh; backing up a few outages a year, neither cycle rating will ever be tested.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: The DELTA 4 (3000) takes camping and the tailgate, the Ultra X takes the long days, and both get through the blackout night.
Camping and the tailgate go to the DELTA 4 (3000) by default. Nobody drives a 298.7 lb house battery to a campsite. The 3000 covers the 2,100 Wh weekend with 511 Wh to spare and barely notices the tailgate.
The long days belong to the Ultra X. Van Life Daily leaves the 3000 2,074 Wh short of 4,685 Wh, and it has no port for a second batteryA6. The Ultra X covers that day and the workday with thousands of watt-hours left over, though it's no more a van battery than a water heater is.
What the Specs Don't Tell You
Selected because: Only the Ultra X has 240 V outlets and a 45,000 W surge, and only the DELTA 4 (3000) has a USB port.
rated cycles
Only one of these has a 240 V outlet, and it isn't the portable. The Ultra X surges to 45,000 W, which EcoFlow credits to its Adaptive StartB1. The DELTA 4 (3000) surges to 7,200 W, plenty for a fridge compressor's kick at startup, and both switch over in no worse than 10 ms.
The Ultra X has no USB port at all, and no car socket. Phones and laptops charge from it the way they charge from the house, through their wall bricks. The DELTA 4 (3000) has a 140 W USB-C port and three more USB ports beside itA3, so a laptop plugs straight in.
Lifetime Value
Selected because: 6,000 rated cycles against 3,500, on batteries four times apart in size.
cost / lifetime kWh
Over the cells' rated life, the DELTA 4 (3000) is the cheaper energy: $0.09 per kWh against $0.19. EcoFlow rates its cells for 6,000 cycles against the Ultra X's 3,500. At one cycle a day that's 16.4 years against 9.6.
The Ultra X still moves more energy before it's done. Each of its cycles is four times the size, so its rated life comes to 43,008 kWh against 18,432 kWh. A backup unit that sees a few outages a year won't get near either figure, so this section only matters if the battery works every day.
Portability & Form Factor
Selected because: 57.3 lb against 298.7 lb: one goes in the truck, the other gets a spot by the panel.
weight
The DELTA 4 (3000) goes where the weekend goes. It's 57.3 lb with a handle at each end, and EcoFlow sells a folding cart for it separatelyA7. I'd carry it down a basement flight myself and not think twice.
The Ultra X is 241 lb heavier and gets sited, not carried. It arrives in boxes and goes in on EcoFlow's quick-connect installB4. I'd pick its spot the way I'd pick a subpanel's: once, near the wiring, with room to work.
Every port, labelled
What plugs in where, and how much it takes
EcoFlow DELTA 3000 Gen4
Front panel
- 1USB-C · 140 WOutUp to 140 W (USB-PD up to 28 V at 5 A). The port for a laptop.
- 22× USB-C · 65 WOutUp to 65 W each. EcoFlow says these two and the USB-A share 16 W when two or more are in use at once.
- 3USB-A · 36 WOutUp to 36 W (5, 9 or 12 V at 3 A).
- 430 A twist-lockOutA three-slot twist-lock marked 30A MAX, rated 30 A at 120 V on the US unit.
- 54× 20 A outletsOutFour T-slot 120 V outlets rated 20 A each, sharing 3,600 W continuous and a 7,200 W surge.
Photo: EcoFlow · Product image, EcoFlow Japan store · numbers and labels are ours. Ratings from EcoFlow’s US spec table; outlet shapes read by us from EcoFlow’s picture, taken of the Japanese unit, which shares the US panel.
Input side
- 1Solar/DC in · 1,000 WIn11 to 60 V, up to 20 A, 1,000 W.
- 2AC in · 1,800 WIn100–120 V at 15 A. Charges at up to 1,800 W, which at 120 V is the whole of an ordinary 15 A circuit.
No battery port: the 3000 doesn’t take extra batteries.
Photo: EcoFlow · Product image, EcoFlow Japan store · numbers and labels are ours. Ratings from EcoFlow’s US spec table and the panel’s own printing.
EcoFlow DELTA Pro Ultra X
Front panel
- 12× 20 A outletsOutTwo NEMA 5-20 outlets, 120 V at 20 A each. All the outlets share 12,000 W.
- 2L14-30 · 120/240 VOutA NEMA L14-30 twist-lock, 120/240 V at 30 A.
- 314-50 · 120/240 V 50 AOutA NEMA 14-50 outlet, 120/240 V at 50 A: the same outlet a 50 A RV cord plugs into.
The covers are printed 120V 20A, 120V/240V 30A and 120V/240V 50A. Above them, under the screen: the AC output button and the power button. No USB ports and no DC output: EcoFlow’s spec table and manual list none.
Photo: EcoFlow · Product image, EcoFlow user manual · numbers and labels are ours. Outlet types and ratings from EcoFlow’s US spec table and manual; the cover printing read from EcoFlow’s store picture.
Rear and side panel
- 1Power In/Out · 50 AIn · OutEcoFlow’s Power In/Out port, 120/240 V at 50 A, 12,000 W. With EcoFlow’s cables it charges from a wall socket (1,800 W), an L14-30 outlet (7,200 W), or a 14-50 outlet or J1772 EV charger (12,000 W).
- 22× Battery portIn · OutTwo ports for DELTA Pro Ultra batteries, up to ten (61.4 kWh) on one inverter. EcoFlow says to use both, with the same number of batteries on each, to reach 12 kW.
- 32× High-PV in · 5,000 WInTwo high-voltage solar inputs (terminals printed PV1 and PV2): 80–500 V at 15 A, up to 5,000 W each and 10,000 W in all. Panels are wired into EcoFlow’s PV Switch Box (standard), whose cable plugs in here.
In use the ports sit behind covers; EcoFlow’s store picture shows the Power In/Out cover printed AC POWER IN/OUT PORT.
Photo: EcoFlow · Product image, EcoFlow user manual (EcoFlow’s callout lines removed) · numbers and labels are ours. Port names from EcoFlow’s manual; ratings from EcoFlow’s US spec table, manual and store FAQ; PV terminal names printed on the panel.
Strengths & trade-offs
EcoFlow DELTA 3000 Gen4
Strengths
- +Costs $6,300 less
- +Lighter by 241.4 lb
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Weaker inverter (-8,400W) limits appliance compatibility.
- –Sealed capacity — the DELTA Pro Ultra X can add batteries to grow past 3,072Wh; this one can't.
EcoFlow DELTA Pro Ultra X
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$6,300) than the DELTA 3000 Gen4.
- –Significantly heavier (+241.4 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
- –Shorter-lived battery — rated for 3,500 charge cycles vs the DELTA 3000 Gen4's 6,000, so it wears out sooner.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
DELTA 3000 Gen4
The DELTA 4 (3000) covers the 2,100 Wh weekend with 511 Wh spare. The Ultra X has the battery for it and no way to get there.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
DELTA Pro Ultra X
Both finish the 1,645 Wh night. The Ultra X takes the row on what's left: 8,800 Wh against 966 Wh, which is the difference between a second night and a warm fridge.
Battery budget usedlower = more headroom
LOAD Fridge 150W×8h · Router + Modem 20W×8h · LED Lights (4 bulbs) 40W×6h · Phone Charger 15W×3h
SCN-03 · 8 hours · needs 320Wh
CPAP Overnight
Sleep therapy without interruption — the #1 medical use case
Either unit
A CPAP is about 40W for eight hours, so both of these cover the night several times over — capacity isn't the question here. The only published difference is fan noise, and it can't settle this: the DELTA Pro Ultra X is rated 30dB and the DELTA 3000 Gen4 40dB, but the DELTA Pro Ultra X's is its maker's best case and the DELTA 3000 Gen4's is EcoFlow's maximum under heavy charge and discharge, so at a 40W draw the real gap can only be narrower than it looks, and may even run the other way. Neither settles which box is quieter at a bedside. Buy whichever is cheaper or easier to carry.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
DELTA Pro Ultra X
The DELTA Pro Ultra X clears the workday at 9% used, banking 9,535Wh — late work, extra calls, or a second laptop charge without arithmetic. The DELTA 3000 Gen4 at 35% also finishes, with 1,701Wh of slack for the unplanned.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
DELTA 3000 Gen4
The DELTA Pro Ultra X at 298.7 lbs is not a take-along — it rolls off a truck bed if it travels at all, so this scenario belongs to the DELTA 3000 Gen4 by default — and it earns it, covering the 670Wh with 1,941Wh to spare. Capacity was never the DELTA Pro Ultra X's problem here; getting to a tailgate was.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
DELTA Pro Ultra X
The DELTA 4 (3000) runs 2,074 Wh short of the 4,685 Wh day and has no port to fix that. The Ultra X covers it with 5,760 Wh spare, though nobody installs a house battery in a van.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: DELTA Pro Ultra X runs 51h vs 12.7h.
$7,999 list · direct from EcoFlow
Planning for more than this? Describe your whole setup and get it sized →
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–696.3hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–139.3hHigh-Draw Appliances
These reveal the real limitsscale 0–10.4h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
November 4, 2026
Verdict: the EcoFlow DELTA 3000 Gen4
For a fridge, the router and the lights through a night, I'd buy the DELTA 4 (3000). It finishes our eight-hour blackout with 966 Wh left, its energy costs $0.09 per lifetime kWh against $0.19, and it can leave the house on a weekend. The Ultra X is the call when a 240 V load has to run, when outages last days, or when you want 10,000 W of solar feeding the house. The 3000 has no battery portA6, so a buyer who expects the list to grow should look at the bigger DELTA 4 before stretching to the Ultra X. EcoFlow ships the 3000 in early DecemberA10.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of November 4, 2026. The links below open EcoFlow's current price.
$1,699.00 · direct from EcoFlow
or check the DELTA Pro Ultra X price$7,899.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated November 4, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, RV Living, Solar Generator, Tailgating, Apartment Balcony.
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews — see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, DELTA 3000 Gen4 rates 4.8/5 (86th percentile of 29 Large-class units), and DELTA Pro Ultra X rates 4.3/5 (61st percentile of 39 Whole-Home / Off-Grid-class units).
How the class ranking is computed →Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
241 lb Apart
The DELTA 4 (3000) is 57.3 lb with a handle at each end. The Ultra X is 298.7 lb across its boxes. One rides to the campsite on Friday. The other gets a spot near the panel and keeps it.
Sealed at 3,072 Wh
There's no battery port on the DELTA 4 (3000), so the battery you buy is the battery you keep. The Ultra X starts at four times that and takes more. If your outage list might grow, the bigger DELTA 4 has a port, and it's worth a look before either of these.
45,000 W Starts a Different Class of Motor
The Ultra X surges to 45,000 W and the DELTA 4 (3000) to 7,200 W. A fridge compressor starts on either. Central air on 240 V starts on one, because only the Ultra X has a 240 V side.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The DELTA 3000 Gen4's figure is a maximum rather than a guarantee — it depends on registering the unit in the EcoFlow app, which adds two years to a three-year standard term. Worth saying because the per-dollar framing can suggest otherwise: the DELTA 3000 Gen4 works out at 2.9 years of cover per $1,000 spent against the DELTA Pro Ultra X's 0.6, but that spread is the price gap, not the terms.
More Years, Less Energy
The DELTA 4 (3000) is rated for 6,000 cycles against 3,500, which is 16.4 years against 9.6 at a cycle a day. Each Ultra X cycle moves four times the energy, though, so its rated life comes to 43,008 kWh against 18,432 kWh. The small one lasts longer. The big one does more.
Full record above — the Test Desk pick is the DELTA 3000 Gen4.
Check DELTA 3000 Gen4 price →or check the DELTA Pro Ultra X priceOwnership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
The DELTA 3000 Gen4 wins on both sticker price and long-term value. At $0.09/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner. One caution on the lifespan row: the DELTA 3000 Gen4 takes longer to reach its cycle rating, but a cycle moves a different amount of energy on each unit — the DELTA Pro Ultra X still delivers more over its shorter horizon (43,008 vs 18,432 kWh). Years measure wear, not usefulness.
Delivers each lifetime kWh for $0.10 less — check the DELTA 3000 Gen4 price →
Growth path
DELTA 3000 Gen4
FIXED CAPACITYFixed at 3,072Wh — a sealed, complete system rather than a starting point. There's no expansion port, so that figure is the ceiling: check it against your longest unplugged stretch before you buy.
Accepts up to 1,000W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
DELTA Pro Ultra X
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 12,288Wh.
Accepts up to 10,000W of solar. Enough for a serious multi-panel array.
Limited ports. You'll likely need a power strip or splitter.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
The DELTA 3000 Gen4 is sealed at 3,072Wh, which is fine if that covers you. The DELTA Pro Ultra X starts at 12,288Wh and can grow beyond it with EcoFlow expansion batteries — real headroom the DELTA 3000 Gen4 doesn't have if your needs climb toward partial-home backup.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3000 Gen4
Nobody has a DELTA 4 (3000) in hand in the US yet. EcoFlow put it on sale November 4 and ships it in early DecemberA10, so this page runs on EcoFlow's US store page and our own arithmeticA2A3A9.
The test I'd want is a kitchen circuit. EcoFlow rates its wall charging at 1,800 W, which at 120 V is 15 A, the full rating of an ordinary 15 A circuitA4. Hypothetically, I'd plug it into the outlet the fridge shares, start a charge with the compressor running, and see whether the breaker or the app setting gives first.
“Capacity 3,072 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3000 Gen4; buyers and the press call the pair the DELTA 4.”
Sources
us.ecoflow.co · jp.ecoflow.co
EcoFlow DELTA Pro Ultra X
Our Ultra X ledger is EcoFlow's spec sheet, repeated by review sites. It covers 12 kW at 120/240 VB1, two 6,144 Wh packs in the baseB2, LFP cells and 10 kW of solarB3, and the quick-connect installB4. No long-term owner reports are in it yet.
“Base config delivers 12kW continuous at 120/240V — enough to power every circuit including a 5-ton AC — scaling to 12-36kW with surge handling to 45kW via Adaptive Start.”
Sources
ecoflow.com · outboundpower.com · bobvila.com · thesolarlab.com
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Launch-day ledger: every entry is EcoFlow's own US store and documentation, or our labelled arithmetic. No owner or reviewer evidence exists yet. [DELTA 3000 Gen4 · 12 entries]
- Whole-home 12kW output, massive scalability (to 184kWh), EV-grade LFP, 10kW solar, and fast install are the standout features. [DELTA Pro Ultra X · 3 entries]
- A2
“US unit: 120 V AC, 60 Hz; rated 3,600 W continuous with a 7,200 W surge. It supports X-Boost (EcoFlow refers to the manual for the US X-Boost figure); X-Boost is unavailable while the unit charges from the wall or runs in bypass.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A3
“AC outlets: 5 total, four rated 20 A max and one rated 30 A max (on EcoFlow's product images, four T-slot outlets and a three-slot twist-lock). USB-A: one port, 36 W max. USB-C: one at 140 W max and two at 65 W max; the two 65 W ports share circuitry with the USB-A, limited to 16 W total when used together. No 12 V car socket.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A4
“AC input 100–120 V, 15 A, 50/60 Hz; X-Stream charging up to 1,800 W from a US wall outlet. Our arithmetic: 1,800 W at 120 V is 15 A, the full rating of an ordinary 15 A circuit, so on a shared circuit you would set the charge rate lower in the EcoFlow app.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A5
“Solar: one input, 11–60 V DC at up to 20 A, 1,000 W (XT60i; an XT60i-to-LP60 cable is in the box). EcoFlow lists six charging methods; its 800 W Alternator Charger is limited to 500 W through the Solar/DC port.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A6
“No extra-battery port. EcoFlow lists expansion only for the DELTA 3800 Gen4 (two extra batteries through its expansion adapter); the 3000 is sealed at 3,072 Wh.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A7
“Weight 57.3 lb (26 kg); 16.77 × 11.36 × 12.09 in without handles, 18.76 in long with them. A handle at each end; EcoFlow sells a folding transport cart separately ($109 at launch, listed at $199). EcoFlow calls it the smallest and lightest portable power station in its class (3 kWh and 3,600 W).”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A9
“Rated for 6,000 cycles (EcoFlow: "15+ years"). Charges at 32–113°F (0–45°C), runs at 14–113°F (−10–45°C). Wi-Fi and Bluetooth with the EcoFlow app. Warranty: 3 years plus a 2-year extension when registered in the EcoFlow app.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A10
“On sale at us.ecoflow.com from November 4, 2026 at $1,699; EcoFlow says it ships in early December. Kit with two 160 W solar panels $2,299. EcoFlow also sells it in Japan, where it went on sale October 30 at ¥179,900.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B1
“Base config delivers 12kW continuous at 120/240V — enough to power every circuit including a 5-ton AC — scaling to 12-36kW with surge handling to 45kW via Adaptive Start.”
ecoflow.com / outboundpower.com — DELTA Pro Ultra X review · 2026 · [positive]
- B2
“Base 12.288kWh of LFP storage (6,144Wh x 2), expandable to 61.44kWh with one inverter and up to 184.32kWh with three inverters and thirty batteries.”
ecoflow.com / outboundpower.com — DELTA Pro Ultra X · 2026 · [positive]
- B3
“EV-grade full-tab LFP cells with a multi-layer safety architecture and 24/7 BMS oversight; solar charging up to 10kW.”
ecoflow.com / bobvila.com — DELTA Pro Ultra X review · 2026 · [positive]
- B4
“A quick-connect design cuts installation time and cost by up to 80%, ready in about 7 days; a CES 2026 Innovation Award Honoree at a $7,999 base price.”
ecoflow.com / thesolarlab.com — DELTA Pro Ultra X review · 2026 · [positive]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3000 Gen4 if you…
- →Your outage list is a fridge, the router and the lights. It finishes our eight-hour blackout with 966 Wh left.
- →It has a second job at the campsite. At 57.3 lb it goes. The Ultra X stays home.
- →Your devices charge over USB-C. It has a 140 W port, and the Ultra X has no USB port at all.
- →You'd rather plug in than book an install. The Ultra X goes in on EcoFlow's quick-connect installB4.
Buy the DELTA Pro Ultra X if you…
- →Something on a two-pole breaker has to run. A 240 V well pump, central air or an electric range needs its 240 V side.
- →Your outages run for days. It ends the blackout night with 8,800 Wh left, 5.3 more nights.
- →Solar is the plan, not the backup. It takes 10,000 W of panels against the 3000's 1,000 W.
If neither fits
If 3,072 Wh is too little but a whole-house install is too much, close this tab. The bigger DELTA 4 takes extra batteriesA6 and grows with the list.
The Bottom Line
For a night of essentials, I'd buy the DELTA 4 (3000) and leave the house battery to houses that need one. It gets through the blackout night with room left, it rides to the campsite, and its energy costs about half as much per kWh over its rated life.
If a 240 V load has to run or your outages run for days, skip the small one entirely. It can't grow into that jobA6. The Ultra X was built for it.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Can the EcoFlow DELTA 4 (3000) power a whole house?
No. It runs 3,600 W at 120 V from five AC outlets and has no 240 V outlet, so it covers essentials like a fridge, a router, a CPAP and lights. The DELTA Pro Ultra X is EcoFlow's whole-home system, with 12,000 W and 240 V outlets.
How much is the DELTA 4 (3000), and when does it ship?
EcoFlow lists it at $1,699 in the US. It went on sale November 4, 2026, and EcoFlow says it ships in early December. The DELTA Pro Ultra X lists at $7,999.
Can you add batteries to the DELTA 4 (3000)?
No. It has no extra-battery port, so 3,072 Wh is all it will ever hold. The DELTA Pro Ultra X starts at 12,288 Wh and grows to 61.44 kWh on one inverter.
Does the DELTA Pro Ultra X have USB ports?
No. It has no USB-A or USB-C ports and no 12 V car socket, so phones and laptops charge through their usual wall chargers plugged into its AC outlets. The DELTA 4 (3000) has a 140 W USB-C port, two 65 W USB-C ports and a USB-A port.
How long does the DELTA 4 (3000) last in a power outage?
Our eight-hour blackout uses 1,645 Wh, and the DELTA 4 (3000) finishes it with 966 Wh left, about 59% of a second night. The DELTA Pro Ultra X finishes the same night with 8,800 Wh left.
Where to buy
EcoFlow DELTA 3000 Gen4Pick
$1,699.00
$1,699.00 · direct from EcoFlow
EcoFlow DELTA Pro Ultra X
$7,899.00
$7,899.00 · direct from EcoFlow
Last checked 31 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.