Head-to-head test
EcoFlow DELTA 3000 Gen4 vs BLUETTI Elite 400The Cheaper One Holds a Quarter More. Why Pay for the EcoFlow?
The Elite 400 holds a quarter more battery for less money, and neither one grows. I'd buy the Elite, unless you'll carry it, drain it every day or run more than 2,600 W at once.
Black Friday Β· 23 days out
Price to beat:Elite 400 $1,299
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 β Β· BLUETTI Elite 400 β
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunnerβs take
Whole-Home Backup Tester
The Elite 400 is the bigger battery and the cheaper box.
BLUETTI's Elite 400 holds 3,840 Wh and sells for $1,399. EcoFlow lists its new DELTA 4 (3000) at $1,699 for 3,072 WhA1A10. That's a quarter more battery for less money, about a third less per watt-hour, and neither box takes an extra batteryA6.
The extra money goes into the inverter.
The DELTA 4 (3000) runs 3,600 W and surges to 7,200 WA2. The Elite 400 runs 2,600 W. On top of 1,000 W more running power, the DELTA 4 adds a 30 A twist-lock outlet beside four 20 A onesA3, and it's 27.7 lb lighter at 57.3 lb against 85 lb.
It also buys a longer-rated pack.
EcoFlow rates the DELTA 4 (3000) for 6,000 cycles and BLUETTI rates the Elite for 3,000. That only pays off if you drain it often, and a backup box rarely does. The DELTA 4 ships in early DecemberA10. The Elite 400 is on sale now.
What the Numbers Reveal
Each conclusion stated first β the numbers behind it on one line, the full analysis below.
Capacity
Outages don't announce how long they'll run, and neither box can add a battery once you find out. Here the cheaper box is also the one still running on the second evening.
Elite 400: 3,840 Wh, no expansionDELTA 4 (3000): 3,072 Wh, no extra-battery portA68-Hour Blackout uses 1,645 Wh: the Elite 400 ends with 1,619 Wh, the DELTA 4 (3000) with 966 Wh
Why it mattersIf your outages run past one night, buy the Elite 400 and keep the difference.
continuous output
A fridge, a furnace blower and a router fit inside either inverter with room to spare. The DELTA 4 earns its keep when things run together: a space heater and a microwave at dinner, or a shop tool with the compressor kicking on behind it. Below 2,600 W combined, the extra headroom sits unused.
DELTA 4 (3000): 3,600 W continuous, 7,200 W surgeA2Elite 400: 2,600 W continuous; Power Lifting runs resistive loads up to 3,900 W at reduced powerB1DELTA 4 (3000): four 20 A outlets and one 30 A twist-lockA3
Why it mattersAdd up what you'd run at the same moment. Under 2,600 W, don't pay for the bigger inverter.
rated cycles
That only shows up if you cycle it daily, say running a cabin off solar. A backup box sees a few dozen drains in a bad year, and at that pace neither pack comes anywhere near its rating.
DELTA 4 (3000): 6,000 cycles; Elite 400: 3,000 cyclesDrained daily: 16.4 years against 8.2 yearsDrained weekly: the Elite's 3,000 cycles last 57.7 years
Why it mattersDaily off-grid users should count the DELTA 4's cycle rating. Backup buyers can ignore it.
The specific dimensions that decide these two units β everything else is a tie.
Your Life, Your Pick
Selected because: The Elite 400 takes the blackout and the camping weekend on margin, and Van Life Daily's 4,685 Wh beats both.
The blackout goes to the Elite because of the second night. The 8-hour run uses 1,645 Wh. The Elite 400 ends it with 1,619 Wh, nearly a whole second night. The DELTA 4 (3000) ends with 966 Wh, a little more than half of one.
Light loads don't separate them. A CPAP night, a remote workday and a tailgate each use well under half of either battery. Weekend Camping goes to the Elite on margin, 1,164 Wh in hand against 511 Wh. Van Life Daily's 4,685 Wh beats both, and neither takes an extra battery to catch up.
What the Specs Don't Tell You
Selected because: 3,600 W against 2,600 W, and switchover ratings of no worse than 10 ms against 15 ms.
rated cycles
The DELTA 4's real advantage is its inverter. It runs 3,600 W and surges to 7,200 WA2, against 2,600 W on the Elite. BLUETTI's Power Lifting stretches the Elite to 3,900 W for heaters and kettlesB1, but it gets there by feeding the load less power, so the heater simply warms slower. For a motor, or several things at once, 3,600 W is the number that holds.
For a desktop PC I'd lean DELTA 4, with one catch. EcoFlow rates its switchover at no more than 10 ms and BLUETTI rates the Elite at no more than 15 ms, and the fussiest PC power supplies sit near the slower line. EcoFlow's FAQ also says the DELTA 4 doesn't support HIDA8, the USB link a backup unit uses to tell a computer to save and shut down. So the PC rides through the drop but gets no warning when the battery runs low.
Lifetime Value
Selected because: 6,000 cycles against 3,000, which only matters if you drain it every day.
cost / lifetime kWh
Over its whole life, the DELTA 4 is the cheaper energy. The page works out $0.09 per lifetime kWh against $0.12 for the Elite, because EcoFlow rates its pack for 6,000 cycles and BLUETTI rates the Elite's for 3,000. Drained every day, that's 16.4 years against 8.2.
A backup box never collects on that. Drained once a week, the Elite's rating lasts 57.7 years. I'd only pay for the DELTA 4's cycle count if the box runs a cabin off solar every day.
Portability & Form Factor
Selected because: 57.3 lb against 85 lb, and the lighter one holds less.
weight
Weight matters most at the car. The DELTA 4 (3000) is 57.3 lb with a handle at each endA7. The Elite 400 is 85 lb, and reviewers describe it on wheels with a trolleyB2B3. Across a garage floor, the Elite rolls and the DELTA 4 gets carried.
Into a trunk, the lighter box wins. I'd lift the DELTA 4 into a hatchback by myself. Getting 85 lb over a bumper is a two-person job, trolley or not. Once you're parked, the Elite has a 12 V car socket for a cooler, and the DELTA 4 has noneA3.
Every port, labelled
What plugs in where, and how much it takes
EcoFlow DELTA 3000 Gen4
Front panel
- 1USB-C Β· 140 WOutUp to 140 W (USB-PD up to 28 V at 5 A). The port for a laptop.
- 22Γ USB-C Β· 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 Β· 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.
- 54Γ 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 Β· Product image, EcoFlow Japan store Β· numbers and labels are ours. Ratings from EcoFlowβs US spec table; outlet shapes read by us from EcoFlowβs picture, taken of the Japanese unit, which shares the US panel.
Input side
- 1Solar/DC in Β· 1,000 WIn11 to 60 V, up to 20 A, 1,000 W.
- 2AC in Β· 1,800 WIn100β120 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 doesnβt take extra batteries.
Photo: EcoFlow Β· Product image, EcoFlow Japan store Β· numbers and labels are ours. Ratings from EcoFlowβs US spec table and the panelβs own printing.
BLUETTI Elite 400
Front panel
- 1Solar/DC in Β· 1,000 WInPrinted 12V-60V/20A/1000W: up to 1,000 W of solar. BLUETTIβs store page also lists car charging, 100 W from a 12 V socket.
- 212 V car socket Β· 120 WOutA covered car socket printed 12V/10A; BLUETTIβs store page rates it 120 W.
- 32Γ USB-C Β· 2Γ USB-AOutA USB-C port at each end, printed 100W each, and two USB-A ports between them, printed 15W each (30 W together, BLUETTI says).
- 44Γ 20 A outletsOutFour 120 V T-slot outlets, each printed 20A Max, sharing 2,600 W (printed on the panel) and a 5,200 W surge.
Photo: BLUETTI Β· Product image, BLUETTI store Β· numbers and labels are ours. Ratings printed on BLUETTIβs panel and listed on BLUETTIβs US store page; the surge figure from our catalogue.
Input side
- 1AC in Β· 1,800 WInThe AC charging inlet, behind a cover. Up to 1,800 W at 120 V by BLUETTIβs store page, or 2,800 W with solar at the same time.
Beside the inlet: a grounding screw and a reset button printed 20A Circuit Protector. BLUETTIβs pictures show no ports on the other side and donβt show the back. No battery port: the Elite 400 doesnβt take extra batteries.
Photo: BLUETTI Β· Product image, BLUETTI store Β· numbers and labels are ours. Port name printed on BLUETTIβs panel; the rating from BLUETTIβs US store page.
Strengths & trade-offs
EcoFlow DELTA 3000 Gen4
Strengths
- +Lighter by 27.7 lb
- +Higher AC output
- +Rated for 6,000 charge cycles β much longer battery lifespan
Trade-offs
- βNo major technical downsides compared to rival.
BLUETTI Elite 400
Strengths
- +Costs $300 less
- +Larger battery capacity
Trade-offs
- βSignificantly heavier (+27.7 lbs), making it harder to move.
- βWeaker inverter (-1,000W) limits appliance compatibility.
- βVery heavy unit that may be difficult for one person to lift.
- βShorter-lived battery β rated for 3,000 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 Β· 2 nights Β· needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
Elite 400
Both cover the 2,100 Wh weekend. The Elite 400 ends with 1,164 Wh to spare against 511 Wh, so it takes this one. The DELTA 4 (3000) is the easier one to lift into the car.
Battery budget usedlower = more headroom
LOADΒ Β Phone Charger 15WΓ6h Β· LED Lights 40WΓ8h Β· Box Fan 75WΓ14h Β· CPAP Machine 40WΓ16h
SCN-02 Β· 8 hours Β· needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
Elite 400
Both finish the 1,645 Wh night. The Elite 400 still holds 1,619 Wh, nearly a second night, against 966 Wh on the DELTA 4 (3000).
Battery budget usedlower = more headroom
LOADΒ Β Fridge 150WΓ8h Β· Router + Modem 20WΓ8h Β· LED Lights (4 bulbs) 40WΓ6h Β· Phone Charger 15WΓ3h
SCN-03 Β· 8 hours Β· needs 320Wh
CPAP Overnight
Sleep therapy without interruption β 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 β capacity isn't the question here. The only published difference is fan noise, and it can't settle this: the Elite 400 is rated 30dB and the DELTA 3000 Gen4 40dB, but the Elite 400'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
LOADΒ Β CPAP Machine 40WΓ8h
SCN-04 Β· 8 hours Β· needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
Either unit
Both run the workday with most of the battery left. The DELTA 4 (3000) has a 140 W USB-C port against 100 W, which charges a big laptop without going through the inverter.
Battery budget usedlower = more headroom
LOADΒ Β Laptop 60WΓ8h Β· External Monitor 30WΓ8h Β· Router + Modem 20WΓ8h Β· Phone Charger 15WΓ2h
SCN-05 Β· 4 hours Β· needs 670Wh
Tailgate Party
Game day power for the crew
Either unit
Both handle game day easily. Since capacity isn't the deciding factor, weight is: at 57.3 lbs the DELTA 3000 Gen4 is the one you'll be glad you brought. Fan noise under load is worth a listen too β it's audible in the lulls between songs.
Battery budget usedlower = more headroom
LOADΒ Β Blender 400WΓ0.5h Β· LED TV (55") 80WΓ4h Β· Bluetooth Speaker 15WΓ4h Β· Phone Charger (Γ3) 45WΓ2h
SCN-06 Β· 24 hours Β· needs 4,685Wh
Van Life Daily
A full day of mobile living β the ultimate endurance test
Neither unit
Neither covers 4,685 Wh, and neither takes an extra battery. This day needs an expandable system.
Battery budget usedlower = more headroom
LOADΒ Β Mini-Fridge 150WΓ24h Β· Laptop 60WΓ4h Β· Phone Charger 15WΓ3h Β· LED Lights 40WΓ5h Β· Fan 75WΓ8h
The Load Test
RUNTIME = (Wh Γ 0.85) Γ· 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: Elite 400 runs 15.9h vs 12.7h.
$1,399 list Β· direct from BLUETTI
Planning for more than this? Describe your whole setup and get it sizedΒ β
Modeled from the spec record β same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.ΒΉ
Essentials
The basics you need runningscale 0β217.6hComfort & Convenience
Makes off-grid life actually enjoyablescale 0β43.5hHigh-Draw Appliances
These reveal the real limitsscale 0β3.3hΒΉ Runtime = (capacity Γ 0.85) Γ· 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 β see methodology.
Conclusion
November 4, 2026
Verdict: the Elite 400
I'd buy the Elite 400, unless the box travels, works every day or runs more than 2,600 W at once. Neither one takes an extra battery, so the Elite's 3,840 Wh against 3,072 Wh is permanent, and it costs $300 less. After an 8-hour blackout it still holds 1,619 Wh against 966 Wh. The DELTA 4 (3000) answers with 3,600 W against 2,600 W, 27.7 lb less weight, a quicker-rated switchover and 6,000 cycles against 3,000. Those are real, but most homes need the battery more than the headroom, and the DELTA 4 doesn't ship until 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 and BLUETTI's current prices.
$1,399.00 Β· direct from BLUETTI
Last checked 31 days ago. Prices move β check before you buy.
or check the DELTA 3000 Gen4 price$1,699.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester Β· Station Arena Test Desk Β· 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): Tailgating, Apartment Balcony.
Full specifications
α΅ Derived: price Γ· rated capacity. See the data behind our comparisons β
Comparison ToolAdd more power stations, side by sideOpen Tool βHow these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it β no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews β see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity Γ 0.85 inverter efficiency) Γ· 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 βClass ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews β 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 5β . Here, DELTA 3000 Gen4 rates 4.8/5 (86th percentile of 29 Large-class units), and Elite 400 rates 3.6/5 (19th percentile of 22 Home Backup-class units).
How the class ranking is computed βTest Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
85 lb Against 57.3 lb
The Elite 400 weighs 85 lb and the DELTA 4 (3000) 57.3 lb, 27.7 lb less for the smaller battery. One person can lift the DELTA 4 into a car. The Elite is the one you'd rather roll.
Elite 400: Power Lifting to 3,900W
The Elite 400 has BLUETTI's Power Lifting mode, which runs a resistive appliance rated up to 3,900W from its 2,600W inverter. It does that by delivering less power than the appliance asks for, not more than the inverter has: the heater still works, it just heats more slowly. Two things follow. BLUETTI scopes the mode to purely resistive loads β a heater, a kettle, an incandescent lamp β so it does nothing for a fridge compressor, a pump or a power tool; for motor loads the figure to read is the Elite 400's separate 5,200W surge peak, not this one. And it is not a reason to size down, because running a load that big from 3,840Wh is a short session either way. Genuinely useful if a heater or a kettle is why you're buying; beside the point otherwise. EcoFlow's X-Boost works the same way, running a resistive load past the inverter's rating at reduced power, but our record for the DELTA 3000 Gen4 carries no X-Boost figure, so check EcoFlow's spec sheet before comparing the two ceilings.
UPS Switchover: β€10ms vs β€15ms
Both list a UPS mode, at different rated speeds. The DELTA 3000 Gen4 is rated β€10ms β quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. The Elite 400 is rated β€15ms β fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. If a computer with unsaved work is the thing being protected, the stated class is worth the attention; nothing here is a lab result.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. Both figures are maximums rather than guarantees: EcoFlow's depends on registering the unit in the EcoFlow app, which adds two years to a three-year standard term; BLUETTI's on buying direct from BLUETTI or registering the unit, since reseller purchases carry a shorter term.
Twice the Cycles, If You Use Them
EcoFlow rates the DELTA 4 (3000) for 6,000 cycles and BLUETTI rates the Elite 400 for 3,000. Drained daily, that's 16.4 years against 8.2. Drained once a week, the Elite's rating alone lasts 57.7 years, so a backup box never gets near either one.
Full record above β the Test Desk pick is the Elite 400.
Check Elite 400 price βor check the DELTA 3000 Gen4 priceOwnership Analysis
What happens after you buy β 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
β warranty ends Β· Reaching the cycle rating means ~80% capacity remains β degraded, not dead.
Analyst note
The Elite 400 is cheaper to buy, but the DELTA 3000 Gen4 is cheaper to own. At $0.09/kWh over its lifetime vs $0.12/kWh, the DELTA 3000 Gen4's higher cycle life and capacity make each dollar go further over the years.
Brand trust
EcoFlow
Ecosystem
Largest in portable power β 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels
Support
US-based phone/email/chat support (1-800-368-8604). Experiences are polarized β many report hassle-free prepaid-label replacements, but others report long waits and refurbished units sent for new claims. Pro tip: buying from Costco or Amazon gives you a stronger return safety net.
Community
Largest community in the space β Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) Β· 4.2/5 Android (~17,000 ratings)
Unique strength
Fastest-charging technology (X-Stream), deepest product ecosystem, and most active innovation cadence. At the top of the range sit two whole-home paths: the TITAN line, one 5 kWh unit that grows to 30 kWh, and the DELTA Pro Ultra platform, which stacks batteries and inverters further β flagship paths, not line-wide features.
Worth knowing
Tested subscription paywalls for advanced app features in early 2025 before community backlash paused the plan. No parts or service offered out of warranty.
BLUETTI
Ecosystem
One of the broadest lineups β 15-20+ models from budget (AC2A) to flagship portable (Apex 300, 2764.8Wh). Includes specialized products: vehicle solar hubs, sodium-ion cold-weather units, and balcony storage systems.
Support
The most inconsistent support in the space. Heavily email-based with China timezone delays. Some users get smooth, efficient service; others report weeks of troubleshooting runarounds, being offered discounts on new units instead of repairs, and confusing third-party purchase claim processes. Buying direct from Bluetti's website tends to produce better support outcomes.
Community
Active and growing β Reddit r/bluetti has a dedicated community. Second-largest after EcoFlow in engagement.
App experience
Rated 4.5/5 iOS and Android β tied for best app experience in the category. V3.0 UI redesign was well-received.
Unique strength
Among the best capacity-to-price ratios available β several Elite and Apex units are the lowest $/Wh in the catalog. Widest product diversity including industry-firsts like sodium-ion cold-weather units and dual solar+alternator vehicle hubs. LFP across the rest of the range, though rated cycle life spans 2,500 (EB3A) to 6,000, and it varies WITHIN the Elite range rather than tracking it β the Elite 300 and Elite 200 V2 are rated 6,000 while the Elite 30 V2, Elite 10 Mini, Elite 320 and Elite 400 are rated 3,000+ and the Elite 100 V2 4,000+, so check the specific model. Dual-voltage (120V/240V) in flagships.
Worth knowing
Customer support inconsistency is the #1 risk factor. Older/discontinued units may become unrepairable β no spare parts policy for some models. Some reports of erratic communication from support agents.
Analyst note
EcoFlow positions itself as a mid-to-premium brand with stronger support infrastructure, while BLUETTI competes on value. The question is whether the EcoFlow ecosystem and support premium is worth it for your use case.
Growth path
DELTA 3000 Gen4
FIXED CAPACITYFixed at 3,072Wh β 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.
Elite 400
FIXED CAPACITYFixed at 3,840Wh β 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.
Realistic full solar rechargeat 70% of rated panel output β see methodology
Analyst note
Neither expands, and that's no knock on either β each is a complete unit at a fixed size. Buy the capacity that covers your needs now (the Elite 400 gives you the larger ceiling); you can't add to either later.
What Owners Report
Patterns from published owner reports and long-term reviews β every claim cited to its source below.
EcoFlow DELTA 3000 Gen4
Nobody owns one yet. EcoFlow put the DELTA 4 (3000) on sale in the US on November 4 and says it ships in early DecemberA10. Everything on this side of the page comes from EcoFlow's US store page and FAQ, plus our arithmeticA1A4.
I'd want to test the wall charger on a real garage circuit. EcoFlow rates it at 1,800 W from the wall, which at 120 V is 15 A, the whole rating of an ordinary circuitA4. If I had one, I'd plug it in beside a running chest freezer at the full rate and see whether the breaker holds, then try again with the rate turned down in the app.
βCapacity 3,072 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3000 Gen4; buyers and the press call the pair the DELTA 4.β
Sources
us.ecoflow.co Β· jp.ecoflow.co
BLUETTI Elite 400
What exists on the Elite 400 comes from reviewers, not long-term ownersB1B2B3. They describe BLUETTI's largest Elite unit, fixed at its native capacityB1, and call it hefty but movable on its wheelsB3.
One roundup lists a 70-minute fast charge and a built-in trolleyB2. Reviews put the weight around 86 lbB3, and our record says 85 lb.
βBLUETTI's largest Elite-range unit β a 3,840Wh LiFePO4 battery with 2,600W continuous output (3,900W Power Lifting), fixed at native capacity with no expansion.β
Sources
techradar.com Β· amazon.com Β· backuppowerhub.com Β· cleantechnica.com Β· notebookcheck.net Β· thesolarlab.com Β· edinburghnews.scotsman.co
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 Β· 12 entries]
- Large 3,840Wh LFP capacity, fast charging, 15ms UPS, and a trolley are the praise; only two AC sockets, no expansion, and heavy weight are the caveats. [Elite 400 Β· 2 entries]
- A1
βCapacity 3,072 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3000 Gen4; buyers and the press call the pair the DELTA 4.β
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) Β· 2026-11-04 Β· [mixed]
- A2
βUS 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.β
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) Β· 2026-11-04 Β· [mixed]
- A3
βAC 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.β
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) Β· 2026-11-04 Β· [mixed]
- A4
βAC input 100β120 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.β
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) Β· 2026-11-04 Β· [mixed]
- A6
βNo 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.β
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) Β· 2026-11-04 Β· [mixed]
- A7
βWeight 57.3 lb (26 kg); 16.77 Γ 11.36 Γ 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).β
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) Β· 2026-11-04 Β· [mixed]
- A8
βSwitches to backup within 10 ms when the grid drops; EcoFlow's FAQ says it does not support HID communication. Noise by EcoFlow's figures: 40 dB or less at up to 1,800 W, 50 dB or less at the full 3,600 W. IP20.β
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) Β· 2026-11-04 Β· [mixed]
- A10
βOn 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 Β₯179,900.β
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) Β· 2026-11-04 Β· [mixed]
- B1
βBLUETTI's largest Elite-range unit β a 3,840Wh LiFePO4 battery with 2,600W continuous output (3,900W Power Lifting), fixed at native capacity with no expansion.β
techradar.com / amazon.com β Elite 400 review Β· 2026 Β· [mixed]
- B2
βCombines 3,840Wh LFP capacity, 3,900W surge, 70-minute fast charging, 15ms UPS protection, and a built-in trolley system β one of the most complete units at the 3,000Wh+ tier in 2026.β
backuppowerhub.com / cleantechnica.com β Elite 400 review Β· 2026 Β· [positive]
- B3
βA hefty ~86 lbs (39 kg), though reviewers note it's lighter than some competitors, with wheels and a trolley for mobility.β
notebookcheck.net / thesolarlab.com β Elite 400 review Β· 2026 Β· [mixed]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3000 Gen4 if youβ¦
- βYou'll carry it. 57.3 lb against 85, into a trunk or up a flight of stairs.
- βYour loads stack past 2,600 W. The DELTA 4 (3000) runs 3,600 W continuously.
- βIt runs a cabin off solar every day. 6,000 cycles against 3,000 makes it the cheaper one to own over its life.
- βYou want a 30 A twist-lock outlet beside four 20 A onesA3.
Buy the Elite 400 if youβ¦
- βYour outages run past one night. A quarter more battery, and neither box can add one.
- βYou want it now. The Elite 400 is on sale today, and the DELTA 4 (3000) ships in early DecemberA10.
- βIt lives in the house and rolls between the garage and the kitchenB3.
- βYou run a 12 V cooler from a car-style socket.
If neither fits
You need 240 V or more than 3,840 Wh. Neither has a 240 V outlet and neither takes an extra battery. For more capacity, the bigger DELTA 4 takes extra batteries. For a well pump or a dryer, look at a split-phase home backup system.
The Bottom Line
I'd buy the Elite 400. Neither box grows, and the Elite gives you a quarter more battery for less money, on sale now.
Pay for the DELTA 4 (3000) only if you'll carry it, drain it daily or run more than 2,600 W at once. That's what the 3,600 W inverter, the lighter body and the 6,000-cycle pack are for.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
How much is the EcoFlow DELTA 4 (3000) in the US?
EcoFlow lists it at $1,699 on its US store and says it ships in early December. The BLUETTI Elite 400 sells for $1,399, so the Elite is the cheaper of the two.
Can you add a battery to the DELTA 4 (3000) or the Elite 400?
No. The DELTA 4 (3000) has no extra-battery port, and the Elite 400 is fixed at 3,840 Wh. Buy the capacity you'll need on day one.
Which is better for a power outage, the DELTA 4 (3000) or the Elite 400?
The Elite 400, for longer outages. After an 8-hour blackout using 1,645 Wh it still has 1,619 Wh left, against 966 Wh on the DELTA 4 (3000). The DELTA 4 has the stronger inverter and the quicker-rated switchover, no worse than 10 ms against 15 ms.
Does the DELTA 4 (3000) last longer than the Elite 400?
On paper, yes. EcoFlow rates it for 6,000 cycles and BLUETTI rates the Elite 400 for 3,000. Drained daily, that's 16.4 years against 8.2. Drained once a week as a backup, neither gets close to its rating.
Which one is lighter?
The DELTA 4 (3000), at 57.3 lb against 85 lb for the Elite 400. The Elite has wheels and a trolley handle, so it rolls on flat ground.
Where to buy
EcoFlow DELTA 3000 Gen4
$1,699.00
$1,699.00 Β· direct from EcoFlow
BLUETTI Elite 400Pick
$1,399.00
$1,399.00 Β· direct from BLUETTI
Last checked 31 days ago. Prices move β check before you buy.
Prices may vary by retailer and are subject to change.