Head-to-head test
EcoFlow DELTA 3 1000 Air vs Goal Zero Yeti 6000X
Across their rated lives both packs deliver nearly the same total energy, so the thirteen-times price gap buys serving size rather than supply, and whether you need the bigger serving is the entire decision.
Full profiles: Goal Zero Yeti 6000X →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
EcoFlow
DELTA 3 1000 Air
2,933Power Score · Appliance Class
No longer sold
EcoFlow has discontinued the DELTA 3 1000 Air — it has left EcoFlow's own store and our price tracking, though remaining retailer stock may linger. Our recommended replacement is the EcoFlow DELTA 3 Classic: the same 1kWh class, with an 1,800W inverter to the Air's 500W.
DELTA 3 Classic · $559.00
$3,999.95 · direct from Goal Zero
Last checked 1 day ago. Prices move — check before you buy.
Spec deltas
The DELTA 3 1000 Air costs $309 and the Yeti 6000X costs $4,000, and across their rated lives they deliver within about 5% of the same energy: 2,880 kWh against 3,036 kWh. The extra money does not buy more energy. It buys the right to spend it faster and in bigger pieces, 6,071Wh at 2,000W instead of 960Wh at 500W.
So everything turns on whether your loads fit inside 816Wh at 500W, which is the Air's 960Wh after the flat 15% derate applied to every unit on this site. A CPAP fits with room left. A laptop, a monitor and a router for a workday sit right on the line. An eight-hour blackout with appliances in it, or a van's 4,685Wh day, does not fit at all, and no discount turns 960Wh into 6,071Wh.
One buying fact frames the rest: EcoFlow no longer sells the DELTA 3 1000 Air, and the DELTA 3 Classic took its place with an 1,800W inverter where the Air had 500WA4. So the Air's argument here is really its class's argument, and the class wins. At a real clearance price the Air is still the better-value box on this page; at anything near list you want its successor. What you should not do is buy the bigger number.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
rated cycles
Which makes cost per lifetime kilowatt-hour eleven cents against a dollar thirty-two, twelve times over, and it means nothing on the Yeti's side of this page is a lifetime-energy argument. What its price buys is delivery: 6,071Wh in one place at 2,000W instead of 960Wh at 500W.
DELTA 3 1000 Air: 960Wh rated for 3,000 cycles, $309Yeti 6000X: 6,071Wh rated for 500 cycles, $4,000rated lifetime energy: about 2,880 kWh for the Air, 3,036 kWh for the Yeti
Why it mattersIf your question is how much energy your money buys, it is already answered; the only reason to pay the difference is needing it all at once.
And the endpoint of that rating is 80% capacity, so the pack that finishes the stretch holds about 4,857WhB4. Run the same 15% usable derate against it, 4,857 x 0.85 is about 4,128Wh, and it no longer clears the 4,685Wh day it was bought for. The van day does not get harder. The Yeti just stops being able to do it.
Van Life Daily needs 4,685Wh; the Yeti covers it with 475Wh of usable energy left, 91% of usable spentYeti 6000X: NMC cells rated for 500 cycles to 80% capacityB1B4at daily use, 500 cycles works out to about 1.4 years
Why it mattersAnyone buying for daily deep cycling should be shopping cycle ratings rather than watt-hours, because the watt-hours expire first.
Which of those two failures matters depends on what you are protecting, and refill speed settles it: an outage that outlasts one night means putting 6,071Wh back, and on the wall that is most of a working dayB3, so a second night is not automatic. The Air cannot cover a whole night's 1,645Wh at all, but it can hold a desktop, a monitor and a router across the transition without a reboot, and 960Wh at its full 500W solar rating is under two hours of sun.
8-Hour Blackout needs 1,645Wh: the Air falls 829Wh short, the Yeti finishes with 3,515Wh sparethe Air lists a UPS transfer rated at 10ms or better; the Yeti's spec sheet lists no UPS modethe Yeti refills in about 12 hours on its included 600W AC chargerB3
Why it mattersIf you are protecting equipment that hates losing power, buy the transfer time; if you are protecting a household's evening, buy the capacity and accept the blink.
Set that beside the workday row and the shape of the unit is obvious: this is a desk-protection device, not a small generator. The successor EcoFlow shipped in its place raised the inverter to 1,800W and left the capacity class where it wasA4, which is the company agreeing that 500W was the binding constraint.
Air: 500W continuous with a 1,000W published peak, and no space heater or hair dryerA3Air's fastest USB-C port is 18W; the Yeti's runs at 60WRemote Workday needs 910Wh, and the Air's 816Wh usable leaves it 94Wh short
Why it mattersBuy this class for a router, a modem and a machine that must not reboot. If your list has a space heater or a hair dryer on itA3, size the inverter before the battery.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: These two are not alternatives, and the six load profiles are the fastest way to see it: the Yeti finishes the workday, the blackout and the van day, the Air takes the tailgate, both clear a CPAP night, and nobody takes the weekend.
Read the six rows as a sorting hat rather than a scoreboard. The Yeti wins three of them by being six times bigger, which is exactly what it should do for the money, and the Air wins the one row where getting to the parking lot is the whole job. The row that tells you the most is the weekend: 2,100Wh of load against an Air that covers about 39% of it and a Yeti that is not going camping. When neither unit can do an ordinary thing, you are not looking at two options. You are looking at two different products with a search query in common.
The workday row deserves its asterisk. The Air's 960Wh nameplate clears the 910Wh day, and it is the flat 15% derate applied to every unit here that puts it 94Wh under. That is a scenario model being conservative, not a unit failing by a nose. But if a laptop, a monitor and a router are your real load, you want headroom you never have to argue about.
Lifetime Value
Selected because: Rated cycles collapse the price gap. Across their rated lives these two packs deliver within about 5% of the same energy, which is the fact that settles the page.
cost / lifetime kWh
Three cents a weekend day against $2.28. That is the same pattern as everything else on this page, expressed the way you would actually feel it: use either unit twice a week and the Air is still going in year 29 while the Yeti is finished around year five. The spread is not a quirk of how we count. It is six times the rated cycles, and cycles are the one spec here that the price gap cannot reach.
The honest caveat sits on the price, not the cycles. The Air's $309 is a single spot capture with no history behind it, so the per-kilowatt-hour verdict is good at that price rather than being a standing property of the unit. The margin is wide enough to absorb a bad capture: at the Yeti's $1.32 per lifetime kilowatt-hour, the Air's 2,880 kWh of rated life would have to cost about $3,800 before the two broke even on energy. That is a long way to travel from $309.
Portability & Form Factor
Selected because: Eighty-four pounds separate them and the Yeti is rated stationary, which is why it loses two of the six scenarios it had the capacity to win.
weight
Twenty-two pounds against 106, and those eighty-four pounds decide more rows here than the battery does. Twenty-two is a one-trip carry to a guest room, a back seat, a picnic table. The Yeti is an appliance you site once and then live around, and it is rated stationary for good reason: it holds 5,160Wh of usable energy and has no way to bring any of it to where the energy is needed.
That is also why the weekend row has no winner. The Yeti could cover a two-day camp twice over and it is not coming camping. Once a unit has to travel, by car, truck bed, campsite or tailgate, the decision stops being about watt-hours and starts being about whether one person can pick it up.
What the Specs Don't Tell You
Selected because: Seven cards fire on this pair and they do not point one way: the UPS mode and the published noise figure belong to the Air, the 60W USB-C and the expansion path belong to the Yeti.
rated cycles
Seven cards fire here and they cut in both directions, which is unusual on a page with a thirteen-times price gap. The one worth reading twice is the UPS line. The Air is the only unit of the two whose spec sheet lists a transfer to battery, so it is the only one that can keep a desktop from rebooting when the grid drops. That is not a feature the Yeti has a bigger version of. It is a feature it does not have.
Against that, the Air's 18W USB-C is a genuine dent on a work build, and the Yeti's expansion path is real headroom a sealed 960Wh box cannot match. The noise card is the one to read most carefully: it fires because Goal Zero publishes no figure at all, which is an absence of evidence rather than evidence of a problem.
Brand Trust
Selected because: One of these units has been discontinued by a maker that offers no service out of warranty; the other is the previous generation from a brand whose support has slipped. Worth a look before you spend.
Both of these products sit behind their makers' current lines, which changes what brand strength means on this page. EcoFlow has the deepest catalogue in the category and the largest community in the category, and it also offers no parts or service once your two years are up, which on a unit it has already replaced is the entire support story. Goal Zero started this category and builds the more ruggedized box, and its support desk has slipped from the premium standard its pricing was built on: long waits, email that goes unanswered, and official forums now shuttered.
On a four-figure purchase, support is part of the product, and both of these lines are past the point where their makers' attention is on them. Buy accordingly. The more replaceable the unit, the less that matters, which is another quiet argument for the cheap one.
Strengths & trade-offs
EcoFlow DELTA 3 1000 Air
Strengths
- +Costs $3,691 less
- +Lighter by 84 lb
- +Rated for 3,000 charge cycles — much longer battery lifespan
Trade-offs
- –Weaker inverter (-1,500W) limits appliance compatibility.
- –Sealed capacity — the Yeti 6000X can add batteries to grow past 960Wh; this one can't.
Goal Zero Yeti 6000X
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$3,691) than the DELTA 3 1000 Air.
- –Significantly heavier (+84 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
- –Shorter-lived battery — rated for 500 charge cycles vs the DELTA 3 1000 Air's 3,000, 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
Neither unit
Neither gives you a powered weekend: the Yeti 6000X has the energy but doesn't travel, and the DELTA 3 1000 Air covers about 39% of the 2,100Wh. One can't go; the other can't finish.
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
Yeti 6000X
The Yeti takes this row and the Air does not finish it: 1,645Wh of load against 816Wh usable leaves the Air 829Wh short, while the Yeti ends the night with 3,515Wh untouched. One thing to know before celebrating, though. The Yeti's spec sheet lists no UPS mode, so the moment the grid drops, everything plugged into it drops with it. It wins the eight hours. It just does not cover the instant the lights go out.
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
Eighteen inches from your head, all night, and capacity is not the variable: a CPAP is about 40W for eight hours and both of these clear it without noticing, 39% of the Air's usable energy and 6% of the Yeti's. So it comes down to what the machine is sitting beside. The Air publishes a noise figure and lists a transfer to battery rated at 10ms or better, which is what keeps a machine from restarting at 2am. The Yeti publishes no figure at all, which is not proof it is loud, only proof you will find out in your own bedroom.
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
Yeti 6000X
The Air misses this one by 94Wh, and how it misses matters: its 960Wh nameplate clears the 910Wh day, and the flat 15% derate applied to every unit here is what tips it under. Call it a coin flip you should not take. The Yeti finishes with 4,250Wh spare, which is the right answer to a question nobody asked, because you do not buy six kilowatt-hours to run a laptop. If a workday is your real load, the fix is a bigger inverter in the same size class, not this much more battery.
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 1000 Air
The Air wins the parking lot by being able to reach it. 670Wh of load and a 400W peak fit inside its 500W inverter with 146Wh of usable energy left at the end, which is a pass with nothing behind it. The Yeti has 4,490Wh spare and no realistic way to be there. Bring the box you can lift over a tailgate, and do not add a second 400W draw to it.
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
Yeti 6000X
The Yeti is the only one of these that gets a van through the day, and it does it on 91% of its usable energy: 4,685Wh of load, 475Wh left over. That is the win and the warning in a single row. A pack rated for 500 cycles, run almost flat every day, reaches its rated end in about 1.4 years, and at 80% of its original capacity it no longer clears the same day it was bought for. If this is the row you are shopping, buy cycles, not watt-hours.
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: Yeti 6000X runs 25.2h vs 4h.
$3,999.95 list · direct from Goal Zero
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 0–344hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–68.8hHigh-Draw Appliances
These reveal the real limitsscale 0–5.2h¹ 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
September 13, 2026
Verdict: the EcoFlow DELTA 3 1000 Air
Take the Air's side of this page, either at a genuine discount or in the form of the DELTA 3 Classic that replaced it, if your loads fit inside 816 usable watt-hours at 500W. The case is arithmetic: 3,000 rated cycles against 500 means both packs are rated to move roughly the same total energy, so thirteen times the price buys serving size, not supply. Where you need the bigger serving, a 4,685Wh van day or a blackout with real appliances in it, the Yeti 6000X is the only one of the two that finishes, and it is still an expensive way to buy that energy: a 500-cycle NMC pack is near its rated end inside a year and a half of daily cyclingB1B4, and Goal Zero's support has slipped from the standard its pricing was built on. One caveat on the money: the Air's price here is a single spot capture with no history behind it, so read the per-kilowatt-hour margin as valid at that price rather than as a standing property of the unit. It is wide enough that being wrong about it does not change the answer.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of September 13, 2026. The links below open EcoFlow's and Goal Zero's current prices.
$309.00 · direct from EcoFlow
or check the Yeti 6000X price$3,999.95 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated September 13, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, Home Backup, CPAP, Tailgating, 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 20 Compact-class units), and Yeti 6000X rates 3.3/5 (1st percentile of 16 Home Backup-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.
Yeti 6000X: 106 lbs Is a Commitment
At 106 lbs, this is a two-person lift. Plan your placement carefully. Once it's set up, you won't want to move it. It's a semi-permanent appliance. Pick your spot.
18W Means the Laptop Uses a Wall Socket
The Air's fastest USB-C port puts out 18W, which is phone territory. A laptop wanting 60W or more charges slowly on it, or not at all while you are working, so on the Air it goes onto one of the three AC outlets instead and spends inverter capacity you only have 500W of. The Yeti runs USB-C at 60W and the laptop simply plugs in. On a remote-work build this, and not capacity, is the Air's real dent.
The Air Is Sealed, and That Is a Real Loss
960Wh is the Air's ceiling and there is no path past it. If your needs are climbing toward partial-home backup, the Yeti has somewhere to go that the Air structurally does not: add Goal Zero expansion batteries and the base unit stays. That is the strongest card on the Yeti's side of this page and it deserves saying plainly rather than burying. If you know your load is about to grow past a kilowatt-hour, a sealed box is the wrong shape no matter what it costs per cycle.
Only the Air Catches the Outage Itself
The Air can sit between the wall and your gear and hand it to battery when the grid drops, rated at 10ms or better. Treat that as the rating it is rather than a measurement someone took, but it is the rating a desktop PC, a router or a CPAP needs to ride through without restarting. The Yeti's spec sheet lists no UPS mode, which means anything plugged into it goes dark at the cut and comes back when you do. It is the one capability on this page that thirteen times the price does not buy.
Same Two Years, Both Sides
Both units carry a 2-year warranty, and Goal Zero's is not conditioned on registering the unit. It is two years because it is two years. So the warranty decides nothing here, which is worth saying out loud because the per-dollar framing looks like it says otherwise. Dividing a warranty term by a purchase price measures the price gap, not the terms.
Battery Lifespan in Real Years
The DELTA 3 1000 Air is rated for 3,000 cycles vs 500. In real life: at daily use, that's 8.2 vs 1.4 years. At weekend use (twice a week), it's 29 vs 5 years. One caution reading years across different sizes: a cycle is 960Wh on the DELTA 3 1000 Air and 6,071Wh on the Yeti 6000X, so count lifetime energy — roughly 2,880 kWh against 3,036 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
One Published Number, and It Is Not a Measurement
The Air lists 39dB. Goal Zero publishes nothing for the Yeti, and that absence is not evidence the Yeti is louder, only the absence of anything to hold it to. The Air's figure is a spec-sheet number whose publishing convention varies from maker to maker, not a reading somebody took in a bedroom. If the unit is going next to a bed, the honest position is that you have one unverified number and one blank, so go find hands-on impressions of the Yeti before you commit.
Full record above — the Test Desk pick is the DELTA 3 1000 Air.
Check DELTA 3 1000 Air price →or check the Yeti 6000X 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 3 1000 Air wins on both sticker price and long-term value. At $0.11/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner. One caution on the lifespan row: the DELTA 3 1000 Air takes longer to reach its cycle rating, but a cycle moves a different amount of energy on each unit — the Yeti 6000X still delivers more over its shorter horizon (3,036 vs 2,880 kWh). Years measure wear, not usefulness.
Delivers each lifetime kWh for $1.21 less — check the DELTA 3 1000 Air price →
Brand trust
EcoFlow
Ecosystem
The deepest catalogue in portable power: a dozen-plus models across DELTA Pro, DELTA 3 and RIVER 3, with panels and smart home panels to match. If you want the unit you buy in two years to talk to the one you buy today, this is the safer shelf.
Support
US phone, email and chat, with genuinely polarized outcomes. Prepaid return labels and quick swaps for some buyers, long waits and a refurbished unit against a new claim for others. Buying through Costco or Amazon adds a second return path, which is worth more than it sounds.
Community
The largest owner community in the space, a roughly 31K-member subreddit plus an official forum, which is where the practical answers tend to live.
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
X-Stream fast charging and the quickest release cadence in the category. At the very top of the range the DELTA Pro Ultra platform stacks batteries and inverters into whole-home backup, which is a flagship path rather than something the rest of the line inherits.
Worth knowing
EcoFlow offers no parts or service once the warranty is up, and that lands harder on a unit it has stopped selling: two years in, a DELTA 3 1000 Air is on its own. The company also tested a subscription paywall for advanced app features in early 2025 and paused the plan after the backlash.
Goal Zero
Ecosystem
A focused line: the current sixth-generation Yeti and Yeti Pro, the previous-generation X series this unit belongs to, Sherpa banks below 100Wh, plus Alta coolers, Nomad and Ranger panels and vehicle kits. Narrow, but it is a system.
Support
A Salt Lake City company owned by NRG that spent years earning a premium-support reputation and has been spending it lately: long waits, email that goes unanswered, tickets sitting for weeks. On a four-figure purchase that is part of what you are buying.
Community
Small and loyal, strongest in overlanding and preparedness circles. The official forums were shuttered recently, which is a real loss on a product line this old.
App experience
Rated 4.4/5 iOS (~1,200 ratings) but recent reviews skew negative — recurring connectivity issues, crashes, and stability problems.
Unique strength
The company that started this category, and it still builds like it: ruggedized, weather-resistant cases and a Yeti-Ready ecosystem of coolers, lights and vehicle kits that genuinely plug together. IP ratings vary by model.
Worth knowing
Goal Zero is usually the priciest energy per watt-hour, and on this page it is. The line is also seen as standing still while faster-moving competitors iterate, and reliability signals on the newer models are not reassuring. The app rates 4.4 on iOS and its recent trend is not upward.
Analyst note
Both sides of this page are aging product lines, which is the unusual thing about it. EcoFlow has already replaced the Air and offers nothing once the warranty lapses; Goal Zero's X series is the generation before its current one, and its support desk has slipped from the standard that justified the price. If you are spending real money here, the brand question is not which ecosystem you would rather live in. It is which company will still take your call about a product it has moved on from.
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.
Yeti 6000X
EXPANDABLESupports Goal Zero expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 6,071Wh.
Accepts up to 600W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are Goal Zero-specific. You're investing in the Goal Zero 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 Yeti 6000X starts at 6,071Wh and can grow beyond it with Goal Zero 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
Field material on the Air is reviewer coverage rather than long-term ownership, and it is consistent: a 960Wh LFP pack behind a 500W inverter in a 22-lb body, deliberately minimal on ports and featuresA1, built as a power-protection device with a UPS transfer rated at 10ms or better to hold a computer, a monitor and a router through an outageA2. The recurring caution is the output ceiling, not the battery: no space heater, no hair dryer, low-to-moderate draw onlyA3.
The other fact that matters here is a buying one. EcoFlow no longer sells this unit, and the closest thing it does sell is the standard DELTA 3 with an 1,800W inverterA4. Our own read of this ledger is the same: a minimalist home-office UPS whose low output is what limits itA0.
“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
Goal Zero Yeti 6000X
The unflattering part of the Yeti 6000X's record is also the unanimous part: NMC cells rated for 500 cycles to 80% capacity, low against modern LFP packs, and past that point the 6,071Wh pack is effectively about 4,857WhB1B4. Weight is the other constant: roughly 106 lbs, not portable for most people, sold as a semi-stationary hub and shipped with a roll cartB2.
On capability the picture is better and still slow: a 2,000W pure sine inverter peaking to 3,500W, refilling in about 12 hours on the included 600W AC chargerB3. Two independent sources land on both the cycle-life and the weight points, so treat those as the settled readB1B2B4. None of this is long-term owner testimony, and our own coverage note flags the same two thingsB0.
“Weighs about 106 lbs — not portable for most people; designed as a semi-stationary power hub, and comes with a roll cart.”
Sources
poweredportablesolar.com · bestgeneratorsolar.com · shopsolarkits.com · bhphotovideo.com · poweraic.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]
- Large NMC capacity but a crippling 500-cycle rating, very heavy (~106 lbs), and slow charging are the recurring points. [Yeti 6000X · 3 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
“Uses lithium NMC cells with a 6,071Wh capacity but a cycle life of only 500 cycles to 80% — not high compared to competing LFP models.”
poweredportablesolar.com / bestgeneratorsolar.com — Yeti 6000X review · 2026 · [negative]
- B2
“Weighs about 106 lbs — not portable for most people; designed as a semi-stationary power hub, and comes with a roll cart.”
shopsolarkits.com / bhphotovideo.com — Yeti 6000X review · 2026 · [mixed]
- B3
“A 2,000W pure sine inverter peaking to 3,500W, fully rechargeable in 12 hours with the included 600W AC charger.”
bestgeneratorsolar.com / poweraic.com — Yeti 6000X review · 2026 · [mixed]
- B4
“After 500 cycles capacity drops to ~80%, so the 6,071Wh battery effectively becomes ~4,857Wh — a structural NMC disadvantage vs LFP.”
poweredportablesolar.com — Yeti 6000X review · 2026 · [negative]
Research compiled September 13, 2026.
Who Should Buy Which
Buy the DELTA 3 1000 Air if you…
- →The person whose blackout worry is a desktop, a monitor and a router. This is the only unit of the two that lists a transfer to battery, and 816 usable watt-hours covers an evening of that load. Buy the DELTA 3 Classic unless you find the Air genuinely discounted.
- →The CPAP user who wants the lightest box that clears the night. It is 320Wh out of 816 usable, in a 22-lb case you can carry to a guest room without planning the trip.
- →The tailgater. 670Wh of load and a 400W peak fit inside the 500W inverter with 146Wh of usable energy still in hand, and it is the only one of the two that can actually be in the parking lot.
This is you — check the DELTA 3 1000 Air price
Buy the Yeti 6000X if you…
- →The person who needs one box to cover a 4,685Wh van day or a full blackout with thousands of watt-hours still spare, and who is fine with that box never moving again.
- →Anyone building toward partial-home backup who wants the base unit to stay put as capacity grows. Goal Zero expansion batteries are the one thing on this page the Air structurally cannot answer.
- →If you already have Goal Zero panels, coolers and vehicle kits in the Yeti-Ready ecosystem, a second system is its own cost, and this is the unit that keeps you on one.
If neither fits
If your daily load looks like the 4,685Wh van day, or a fridge plus a well pump through a long outage, close this tab. The Air cannot finish those days and the Yeti finishes them on a 500-cycle NMC pack whose rated end arrives fast under daily use. Shop modern LFP units in the Yeti's capacity class instead, where cycle ratings run far above 500B1. You want the big battery. You just do not want to buy it twice.
The Bottom Line
Roughly the same lifetime energy, thirteen times the price for bigger servings of it. If your loads fit inside 816 usable watt-hours at 500W, a desk, a router, a CPAP, a tailgate, the Air's side of this page wins and the only remaining question is whether you buy a clearance Air or the DELTA 3 Classic that replaced it. If they do not fit, the Yeti is the only one of the two that finishes the job, and it charges a premium for a pack whose rated life ends about where a modern LFP unit is getting startedB1.
So: buy the small box if the small box covers you, and buy the successor rather than the one EcoFlow stopped making. And if you genuinely need six kilowatt-hours in one place, buy six kilowatt-hours that are still six kilowatt-hours on the five hundred and first cycle.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 3 1000 Air discontinued?
Yes. EcoFlow no longer sells it, and the DELTA 3 Classic replaced it with an 1,800W inverter where the Air had 500W. Retailer stock can linger for a while after a maker delists a unit, so you may still come across one. At a real discount it is a capable light-duty box; at full price, buy the successor instead.
Is the Goal Zero Yeti 6000X worth the money?
Only if you need 6,071Wh in one place and it is going to sit still. Its NMC pack is rated for 500 cycles to 80% capacity, about 1.4 years at daily use, so across its rated life it delivers roughly what the cheap unit on this page delivers, at thirteen times the price. If your loads are small enough to fit a 960Wh box, this is a lot of money for energy you will not reach.
Will the DELTA 3 1000 Air run a space heater?
No. 500W continuous rules out space heaters and hair dryers, and the unit is built for low-to-moderate draw. Its 1,000W published peak covers a brief startup spike, not a sustained resistive load. If heat is on your list, this size class is not the answer.
Which is better for a CPAP, the DELTA 3 1000 Air or the Yeti 6000X?
Both cover the night, so decide on everything else. A CPAP is roughly 40W for eight hours, about 320Wh, which is 39% of the Air's usable energy and 6% of the Yeti's. The Air is the one with a published noise figure and a listed transfer to battery; Goal Zero publishes no noise figure for the Yeti, so there is nothing to hold it to. On weight alone the 22-lb box is the one that ends up on a nightstand.
Can the Yeti 6000X power an RV or a house?
Not through dedicated hookups. It has no 30A RV outlet and no 240V outlet, so an RV or a house circuit gets fed through one of its two household sockets, inside 2,000W. Expansion batteries add capacity, not outlets. For shore power or panel-level backup you want a unit built with those ports from the start.
Check DELTA 3 1000 Air price →
Where to buy
EcoFlow DELTA 3 1000 AirPick
$309.00
$309.00 · direct from EcoFlow
Goal Zero Yeti 6000X
$3,999.95
$3,999.95 · direct from Goal Zero
Last checked 1 day ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.