Head-to-head test
EcoFlow DELTA 3 1000 Air vs EcoFlow DELTA 3 Ultra
EcoFlow built the 1000 Air to be carried and the Ultra to be wheeled out — the Ultra wins every scenario we could size a winner for, so the only question left is whether your outage needs 960Wh or 3,072.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
EcoFlow
DELTA 3 1000 Air
3,014Power Score · Appliance Class
$309.00 list · direct from EcoFlow
EcoFlow
DELTA 3 Ultra
5,362Power Score · The AC & Fridge Zone
$1,299.00 list · direct from EcoFlow
Spec deltas
The DELTA 3 Ultra is the winner in every scenario we sized a winner for — Weekend Camping, an 8-Hour Blackout, CPAP Overnight, a Remote Workday, and Tailgate Party all go to the Ultra. Only Van Life Daily beats them both, and it beats them both badly enough that the honest answer there is neither unit alone.
None of that makes the 1000 Air a bad battery. It's a 22 lb, 960Wh unit — 55.2 lbs lighter than the Ultra's 77.2, the difference between a one-hand carry up a stairwell and a wheeled-cart job. And on the cost engine's own math, the Air is still the cheaper unit to own: both land at $0.11 per lifetime kWh, so the Ultra's extra capacity and cycles don't come at a worse rate, they just come at $990 more upfront.
Same brand, same battery chemistry, two different jobs. The rest of this page is about matching the unit to the job, not crowning a winner — though if you make us pick one, we will.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
cost / lifetime kWh
That's exactly why the engine still calls the Air the cheaper unit to own: an identical per-kWh rate at less than a quarter of the entry price ($309 vs $1,299) and a lower cost per warranty year ($155 vs $260). Cheaper to own tracks the bill you pay, not the efficiency of the electrons.
Air: $309, $0.11 per lifetime kWh, $155 per warranty yearUltra: $1,299, $0.11 per lifetime kWh, $260 per warranty yearUltra: 4,000 rated cycles vs the Air's 3,000
Why it mattersIf your load genuinely fits inside 960Wh, paying $990 more for the same per-kWh rate buys capacity and output you won't use, not a better deal.
continuous output
That's the 960Wh-vs-3,072Wh gap doing its job on a unit that's also 3.5x heavier — the Ultra wins on power partly because it's built to be moved less often and asked to do more each time it is.
Air: 22 lbs, 500W continuous, 960WhUltra: 77.2 lbs, 3,600W continuous, 3,072Whthe Ultra wins Weekend Camping, the 8-Hour Blackout, CPAP Overnight, Remote Workday, and Tailgate Party
Why it mattersA buyer picking on 'which wins more scenarios' should just buy the bigger battery — the real decision is whether they want to own and move 77.2 lbs to get there.
This is exactly the scenario the Air's sealed 960Wh design forecloses outright and the Ultra's expansion batteries exist for — the Air has no path to that number at all, while the Ultra is a starting point you can add capacity onto.
Van Life Daily needs 4,685Wh a daythat's 574% of the Air's usable capacity and 179% of the Ultra'sonly the Ultra has an expansion path past 3,072Wh
Why it mattersA van-lifer sizing for daily whole-rig power should treat the Ultra as a platform to expand, not a finished purchase, and rule the Air out entirely.
The port spec scaled up even more than the battery did — EcoFlow didn't just make the Ultra bigger, it made the ports meaningfully faster, and that matters more sitting at a desk than in a tent.
Air: 18W max USB-CUltra: 100W max USB-C
Why it mattersAnyone planning to charge a modern laptop purely over USB-C should weight this port spec as heavily as capacity — the Air's 18W ceiling is phone-and-earbuds territory only.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: Six real-world loads decide this more concretely than any spec column; the sweep is the actual argument for the Ultra.
Run the same day five different ways — camping, a blackout, a CPAP night, a workday, a tailgate — and the Ultra answers all five the same way: yes, with capacity left over. The Air's best showing is Tailgate Party, where it still uses 82% of what it's got; its worst is Weekend Camping, where the trip needs 257% of what it can usably deliver.
The only scenario where the Ultra doesn't get a clean win is Van Life Daily, and that's because nobody does — a 4,685Wh day is 179% of even the Ultra's usable capacity. Five wins out of six sizes the Ultra as the more capable single box; the sixth sizes it as still not quite enough alone.
Portability & Form Factor
Selected because: 22 lbs vs 77.2 lbs is the Air's entire case and the honest cost of the Ultra's win.
weight
The Ultra's one real weakness is right here: 77.2 lbs is not a unit you casually relocate. The Air, at 22 lbs, is the one you actually carry — down a hallway, over a tailgate, up a half-flight of stairs without thinking about it. That's 55.2 lbs of difference, better than 3x, and it's the single spec where the smaller unit is unambiguously the better object to own.
Weight is also the honest reason not to just default to buying the bigger one. A buyer who never needs more than a few hundred watt-hours is still hauling all that extra battery every single time they move it.
Lifetime Value
Selected because: cheaperToOwn favors the Air despite a tied per-kWh rate — the nuance buyers actually ask about.
cost / lifetime kWh
Both units settle at exactly $0.11 per lifetime kilowatt-hour, so the sticker-price gap isn't the Ultra charging more for the same electrons — it's the Air being the smaller, cheaper commitment. $155 a year against $260 over the warranty term, and the Air still wins that column outright.
That makes this the rare comparison where the value engine and the capability engine point different directions on purpose. Buy for cost alone and the math says Air. Buy for what the five decided scenarios above require and the math says Ultra. Both are correct answers to different questions.
Growth Path
Selected because: Sealed vs expandable explains why Van Life Daily is the one load neither unit solves alone.
solar input
The Air's 960Wh is fixed for the life of the unit — no expansion path exists. The Ultra starts at 3,072Wh and adds EcoFlow expansion batteries on top of that, so its real ceiling isn't 3,072Wh, it's however many batteries you're willing to buy next.
That difference is invisible until the one load above that neither unit solves alone. Sealed capacity is fine right up until it isn't; expandable capacity is the only one of these two builds with an answer for what comes after.
What the Specs Don't Tell You
Selected because: USB-C wattage and warranty length are real differences the top-line specs don't surface.
rated cycles
Two gaps the top-line specs don't shout about: USB-C tops out at 18W on the Air and 100W on the Ultra, the difference between phone-speed charging and fast-charging a laptop directly with no brick. The warranty runs 2 years on the Air against 5 on the Ultra — real coverage, even though the Air still costs less per warranty year on the math above.
Cycle life tells the same story at a smaller scale: 3,000 rated cycles on the Air, 4,000 on the Ultra, part of why the per-kWh cost ties despite the price gap. None of these are dealbreakers alone — they're the fine print worth reading before either one ships.
Strengths & trade-offs
EcoFlow DELTA 3 1000 Air
Strengths
- +Costs $990 less
- +Lighter by 55.2 lb
Trade-offs
- –Weaker inverter (-3,100W) limits appliance compatibility.
- –Sealed capacity — the DELTA 3 Ultra can add batteries to grow past 960Wh; this one can't.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the DELTA 3 Ultra's 4,000, so it wears out sooner.
EcoFlow DELTA 3 Ultra
Strengths
- +Larger battery capacity
- +Higher AC output
- +Longer warranty
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$990) than the DELTA 3 1000 Air.
- –Significantly heavier (+55.2 lbs), making it harder to move.
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 3 Ultra
A weekend of camping draws around 2,100Wh across the trip. The Air would need to be recharged mid-trip just to keep up — 257% of its usable capacity — while the Ultra covers it at about 80%, with real margin left for a second day.
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 3 Ultra
An 8-hour blackout at 1,645Wh is more than double what the Air can actually deliver — 202% of its usable capacity — so it would tap out and need a generator or a wall outlet to finish the outage. The Ultra clears it at 63%, comfortably inside one charge.
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
DELTA 3 Ultra
Both units technically have the capacity for a night on CPAP — 320Wh is only 39% of the Air's usable capacity and 12% of the Ultra's. Capacity was never the deciding spec here; at 30 dBA against the Air's 39, the Ultra is the quieter box to have running two feet from a pillow.
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 3 Ultra
A remote workday pulling 910Wh edges just past what the Air can deliver — 112% of usable capacity, a near miss rather than a blowout. The Ultra runs the same day at 35%, the difference between planning around an outlet and not thinking about it at all.
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 3 Ultra
Both units clear a 670Wh tailgate load on paper — 82% for the Air, 26% for the Ultra. The Air is doing that with much less room for a surprise extra device or a longer afternoon than planned; the Ultra's spare capacity is the more forgiving choice for a party that always runs longer than the invite said.
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
Neither unit
4,685Wh a day is a full rig's worth of power, and neither unit gets there solo — the Air lands at 574% of its usable capacity needed, the Ultra at 179%. This is a job for the Ultra's expansion batteries stacked together, or a purpose-built van power system, not a single box off the shelf.
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 six 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 3 Ultra runs 12.7h vs 4h.
$1,299 list · direct from EcoFlow
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 0–174.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–34.8hHigh-Draw Appliances
These reveal the real limitsscale 0–2.6h¹ 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
July 28, 2026
Verdict: the DELTA 3 Ultra, on Power Score margin
The Ultra is the winner on every scenario we could size a winner for — Weekend Camping, an 8-Hour Blackout, CPAP Overnight, a Remote Workday, and Tailgate Party all go to the bigger unit, and it does it at the same cost-per-kWh rate as the Air, not a worse one. That's a strong, mechanically explainable case for the Ultra as the more capable single box. Confidence isn't higher because the Air is a genuinely correct answer for a real, common buyer: anyone whose actual load fits inside 960Wh is better served by 22 lbs and a smaller bill than by capacity they'll carry and never spend. Buy for the scenarios you'll actually hit, not the one with the most scenario wins.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 28, 2026. The links below open EcoFlow's current price.
$1,299.00 list · direct from EcoFlow
or check the DELTA 3 1000 Air price$309.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 28, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): RV Living, Home Backup, CPAP, Food Truck, Apartment Balcony, Camping.
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 3 1000 Air rates 5.0/5 (99th percentile of 19 Compact-class units), and DELTA 3 Ultra rates 5.0/5 (99th percentile of 25 Large-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.
77.2 Pounds Is a Two-Person Lift
The Ultra is 3.5x heavier than the 1000 Air's 22 lbs — expect to use the built-in wheels rather than carry it solo across a campsite or up a flight of stairs.
USB-C Maxes at 18W on the Air
The 1000 Air tops out at 18W over USB-C — enough for a phone, not a laptop. The Ultra's 100W USB-C port can charge most modern laptops directly, no AC brick required.
The Air's Capacity Is Fixed at 960Wh
There's no expansion path on the 1000 Air — 960Wh is the ceiling for the life of the unit. The Ultra starts at 3,072Wh and can add EcoFlow expansion batteries to grow further.
5 Years vs 2 Years
The Ultra carries a 5-year warranty against the Air's 2. Priced per warranty year, the Air is still cheaper to own at $155 a year versus $260 — the longer coverage extends the cost gap rather than closing it.
3,000 Cycles vs 4,000
The Ultra is rated for 4,000 charge cycles against the Air's 3,000 — a longer-lived battery, and one reason the per-kWh cost still ties despite the price gap.
Full record above — the Test Desk pick is the DELTA 3 Ultra.
Check DELTA 3 Ultra price →or check the DELTA 3 1000 Air 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
Both units have similar long-term ownership costs ($0.11/kWh vs $0.11/kWh). The price difference is what you see on the sticker — neither is a hidden bargain or rip-off.
Growth path
DELTA 3 1000 Air
FIXED CAPACITYFixed at 960Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
DELTA 3 Ultra
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,072Wh.
Accepts up to 1,600W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
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 3 1000 Air is sealed at 960Wh, which is fine if that covers you. The DELTA 3 Ultra starts at 3,072Wh and can grow beyond it with EcoFlow expansion batteries — real headroom the DELTA 3 1000 Air 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 3 1000 Air
Reviewers describe the 1000 Air as a minimalist, focused unit — fewer ports and features than EcoFlow's larger DELTA 3 models, built around a 10ms UPS switchover that keeps a computer, monitor, and router alive through a blipA1A2. That focus has a ceiling: with only 500W continuous output, it won't run a space heater or a hair dryer, so it's sized for light-to-moderate draw rather than whole-room backupA3.
EcoFlow has already moved on from this exact model to the standard DELTA 3A4, worth knowing before comparing on price alone — the Air here is the outgoing entry point in the lineup, not the current one.
“A 960Wh LiFePO4 unit with a 500W inverter (800W X-Boost) weighing only 22 lbs — a focused, minimalist design with fewer ports and features.”
Sources
thesolarlab.com · batteryskills.com · backuppowerhub.com · matanich.com
EcoFlow DELTA 3 Ultra
Field data specific to this exact model is thin — most available reviews cover the closely related DELTA 3 Ultra Plus rather than the plain Ultra, since the two launched close together with overlapping specs. With that caveat, the pattern is consistent: fan noise stays unobtrusive even at high loadB1B2, and the UPS switchover performs on par with dedicated backup hardware, with no dips or shutdowns reported when power cut outB5B6. Build quality reads as substantial rather than cheap — the case, buttons, and cabling all held up as durableB9.
One reviewer ran a full remote workday on it — laptop, desktop workstation, and monitors — and still had meaningful charge left at the endB8. The recurring caveat is weight: it's consistently flagged as genuinely heavy, offset by a telescoping handle and wheels rather than a spec you'd want to lift soloB10B14.
“Even when you're pushing it hard, the DELTA 3 Ultra Plus runs much quieter than older EcoFlow models, like the DELTA 2 Max.”
Sources
thesolarlab.com · postperspective.com · appleinsider.com · digitaltrends.com · popsci.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
- A focused home-office UPS unit — LFP, 10ms UPS, quiet and light — but low 500W output; now discontinued in favor of the DELTA 3. [DELTA 3 1000 Air · 3 entries]
- Reviewers consistently praise the quiet fan operation of the Ultra-tier unit compared to older EcoFlow models, though this is described in professional test conditions rather than long-term ownership. [DELTA 3 Ultra · 2 entries]
- UPS/switchover performance is repeatedly called seamless with no observed dips or shutdowns during power interruption tests. [DELTA 3 Ultra · 3 entries]
- The unit's substantial 74 lb weight is flagged across multiple reviews as a portability drawback, mitigated somewhat by wheels and handle design. [DELTA 3 Ultra · 2 entries]
- Build quality/durability (casing, cable, port covers) is repeatedly highlighted as premium and well-engineered. [DELTA 3 Ultra · 2 entries]
- A1
“A 960Wh LiFePO4 unit with a 500W inverter (800W X-Boost) weighing only 22 lbs — a focused, minimalist design with fewer ports and features.”
thesolarlab.com / batteryskills.com — DELTA 3 1000 Air review · 2026 · [mixed]
- A2
“Built as a power-protection device with a 10ms UPS switchover to keep a computer, monitor, and router running through outages.”
backuppowerhub.com — DELTA 3 1000 Air review · 2026 · [positive]
- A3
“With only 500W continuous output, it won't run a space heater or hair dryer — it's built for low-to-moderate draw devices.”
backuppowerhub.com / matanich.com — DELTA 3 1000 Air review · 2026 · [mixed]
- A4
“EcoFlow no longer sells the DELTA 3 1000 Air; the closest successor is the standard DELTA 3 (1,024Wh LFP, 1,800W output, ~$549).”
backuppowerhub.com — DELTA 3 line · 2026 · [mixed]
- B1
“Even when you're pushing it hard, the DELTA 3 Ultra Plus runs much quieter than older EcoFlow models, like the DELTA 2 Max.”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · 2025-09/10 (approx) · [positive]
- B2
“Even when you're pushing the inverter to its maximum output, the fans never become annoying or distracting.”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · 2025-09/10 (approx) · [positive]
- B5
“Over my career I have become accustomed to APC batteries immediately switching on when there is a power hit or power shut-off, and the EcoFlow Delta 3 Ultra Plus works in the exact same way.”
postperspective.com — Review: EcoFlow Delta 3 Ultra Plus Portable Power Station · 2026-04 · [positive]
- B6
“I didn't experience any shut-offs or dips when I unplugged the EcoFlow from the wall.”
postperspective.com — Review: EcoFlow Delta 3 Ultra Plus Portable Power Station · 2026-04 · [positive]
- B8
“I was able to work remotely for an eight-hour day with 40% power left, which included running my laptop, desktop workstation and monitors.”
postperspective.com — Review: EcoFlow Delta 3 Ultra Plus Portable Power Station · 2026-04 · [positive]
- B9
“It does not feel cheap or fragile. Everything from the outer shell case to the plastic buttons and the AC cable feels substantial and durable enough to withstand day-to-day wear and tear.”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11-16 · [positive]
- B10
“Weighing in at a thunderous 74 pounds, the Ultra is not considered lightweight by any standards.”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11-16 · [mixed]
- B14
“The sturdy telescoping handle and wheels make it effortless to cart around, and if you do have to lift its admittedly somewhat hefty 74 lbs, grab handles are well placed for the task.”
popsci.com — EcoFlow DELTA 3 portable power station series first impressions · 2025-09-29 · [positive]
Research compiled July 28, 2026.
Who Should Buy Which
Buy the DELTA 3 1000 Air if you…
- →Buy the 1000 Air if your real load is a home-office UPS: a computer, a monitor, a router, and a 10ms switchover so a mid-afternoon blip doesn't cost you unsaved workA2. It's also the right call for CPAP-only overnight backup, where nightly draw is light enough that capacity was never going to be the deciding factor between these two.
- →It's the better object for anyone who has to physically carry a power station regularly rather than roll it — up an apartment stairwell, into a tent site, across a lot to a tailgate spot. At 22 lbs it's a bag item; at 77.2 lbs the Ultra is a cart item. Buy the Air if that difference is the one you'll feel every time.
Buy the DELTA 3 Ultra if you…
- →Buy the Ultra if you've landed on more than one 'can't handle' above — Weekend Camping, the 8-Hour Blackout, and a Remote Workday all exceed what the Air can usably deliver, and the Ultra clears all three with real capacity to spare. That's the buyer this unit is actually built for: someone whose outage or workday doesn't fit in 960Wh, not someone chasing a bigger number for its own sake.
- →It's also the only one of these two with a real answer for growing needs: an expandable base that starts at 3,072Wh instead of a sealed ceiling at 960Wh. If you're provisioning for an outage that might run more than one day, or a van or cabin setup you expect to expand, the Ultra is a platform; the Air is a finished purchase.
If neither fits
Neither is right for genuine Van Life Daily-scale power — a full rig's daily draw badly outstrips both units solo, the Ultra included. That buyer needs the Ultra stacked with its own expansion batteries, or a dedicated van power system sized to the full rig, not a single off-the-shelf unit from either end of this comparison.
The Bottom Line
The Ultra wins this one on the numbers that matter for real outages: it clears Weekend Camping, an 8-Hour Blackout, CPAP Overnight, a Remote Workday, and Tailgate Party, and it does it without costing a worse rate to own than the Air. The extra $990 isn't buying a worse deal, it's buying 3.2x the capacity for a buyer who actually needs it.
But needing it is the real qualifier. If your load fits inside the Air's 960Wh, its 22 lbs make it the better object to own, full stop — buy the unit sized to your outage, not the one that wins the most scenario cards.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 3 1000 Air still available to buy?
EcoFlow has already moved on from this exact model to the standard DELTA 3. It's still a capable 960Wh unit while stock lasts, but treat it as the outgoing entry point in the lineup rather than the current one — worth confirming availability before buying on price alone.
Can the DELTA 3 1000 Air run a CPAP all night?
Yes, comfortably. A typical CPAP night needs about 320Wh, which is only 39% of the Air's usable capacity — plenty of headroom for a full night with room to spare. The Ultra clears the same night at just 12%, with the added benefit of running at 30 dBA against the Air's 39, quieter next to a pillow.
How much heavier is the DELTA 3 Ultra than the 1000 Air?
77.2 lbs against 22 lbs — a 55.2 lb difference, or better than 3x the weight. The Air is a one-hand carry; the Ultra is built to be wheeled, not lifted.
Does the DELTA 3 Ultra cost more per kilowatt-hour than the 1000 Air?
No, both work out to $0.11 per lifetime kWh. The Ultra's $990 higher price buys 3.2x the capacity and 3,100 more watts of continuous output at the same per-kWh rate, not a worse deal on efficiency.
Can either of these run a van or cabin full-time?
Not solo. A realistic daily van-life load runs well past what either unit can usably deliver by itself, the Ultra included. That's a job for the Ultra with its own expansion batteries added, or a dedicated van power system, not a single unit from this pair.
Where to buy
EcoFlow DELTA 3 1000 Air
$309.00
$309.00 list · direct from EcoFlow
EcoFlow DELTA 3 UltraPick
$1,299.00
$1,299.00 list · direct from EcoFlow
Prices may vary by retailer and are subject to change.