Head-to-head test
EcoFlow DELTA 2 vs Goal Zero Yeti 1000 (6th Gen)
The DELTA 2 is out of EcoFlow's range, which turns this from a two-unit choice into one question: does the Yeti's 3,600W ceiling and 900W of solar input earn premium money for 988Wh you can never add to?
Full profiles: EcoFlow DELTA 2 → · Goal Zero Yeti 1000 (6th Gen) →
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
EcoFlow no longer sells the DELTA 2. Its store page forwards to the DELTA 3, the like-for-like replacement, so one half of this matchup can't be bought from its maker and can't be the recommendation here however good it was. The specs below are still true, and if you own a DELTA 2 or you've turned one up in retailer stock, the comparison is still worth having. The buying advice has exactly one candidate.
Capacity was never going to settle it anyway. 1,024Wh against 988Wh comes out at 870 versus 840Wh usable under a flat 85% allowance for conversion loss, and 30Wh is under an hour of the 40W CPAP load this page models. These are the same size battery in two different boxes.
What separates them is what goes in and what starts up. The Yeti takes 900W of solar where the DELTA 2 takes 500W, and peaks at 3,600W where the DELTA 2 peaks at 2,700W. It pays for that with 8.3 lbs, a sealed case, and the fact that nobody outside Goal Zero has published a hands-on test of this model yetB0. Buy it anyway, because it's a genuinely good 988Wh unit and because it's the one you can still get.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
solar input
That is what makes a sealed pack survivable in a long outage. The blackout list here needs 1,645Wh and neither unit holds that in one charge, so the unit that matters is the one that comes back fastest after you've spent it. The DELTA 2 needs nearly twice as long to take the same energy from the same array, because 500W into 1,024Wh is about two hours at rate.
Yeti 1000 (6th Gen): 988Wh, sealed, no expansion batteriesYeti 1000 (6th Gen) accepts 900W of solar input; the DELTA 2 accepts 500WThe 8-hour blackout list needs 1,645Wh; the Yeti covers 840Wh of it and comes up 805Wh short
Why it mattersIf you own panels or plan to, the sealed ceiling stops being the objection the spec sheet makes it look like. If you never buy panels, 840Wh usable is all you will ever have, and a sealed unit is the wrong shape for you.
continuous output
But 840Wh of usable energy behind a 2,000W inverter means a 1,500W load runs about half an hour (840 divided by 1,500). The bigger inverter buys starting power, not endurance. It will spin up tools and compressors the DELTA 2 stalls on, then run them for one job rather than one afternoon.
Yeti 1000 (6th Gen): 2,000W continuous, 3,600W peakDELTA 2: 1,800W continuous, 2,700W peakYeti 1000 (6th Gen) usable energy: 840Wh under a flat 85% allowance
Why it mattersBuy the Yeti for the spike on a pump, a saw or a fridge compressor. Don't buy it expecting to live at high wattage, because nothing this size does that.
rated cycles
Then read the cycles back as years. Both figures sit decades past the point where the inverter, the screen, the app and the port selection have failed or gone unsupported, and both are many times the five-year warranty each unit carries. At this size the cycle rating is a floor they both clear, not an axis you choose on.
Yeti 1000 (6th Gen): 4,000 cycles minimum on 988Wh, or 3,952kWh of rated lifetime throughputDELTA 2: 3,000 cycles minimum on 1,024Wh, or 3,072kWhAt weekend use those ratings work out to 38.5 years and 28.8 years
Why it mattersDon't pay for the cycle count. Weigh the input rate, the surge ceiling and what you're willing to carry, and treat both batteries as effectively permanent.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: The two packs sit 36Wh apart, so this is where you can see that capacity isn't the axis: 870 versus 840Wh usable.
continuous output
Thirty watt-hours is the entire capacity argument, and it disappears the moment you put either unit under a real load. Both land in the same place on every list this page runs: fine for a night of small things, short on anything that involves a heating element or a second day. The honest way to size either of them is one room for one evening, then a recharge.
The difference you will actually notice is in your hands. The Yeti is 35.3 lbs against the DELTA 2's 27, and that 8.3 lbs is the line between carrying a box out to the truck one-handed and committing to it with both. It also has four AC sockets where the DELTA 2 has six, which matters more than it sounds like when two wall warts want the same corner of the strip.
What the Specs Don't Tell You
Selected because: Where the Yeti earns its premium (a 3,600W peak, 900W of solar input, a transfer rated no worse than 15ms) and where it doesn't (sealed at 988Wh, with no published noise figure).
rated cycles
The Yeti's case for the money is a 3,600W peak and 900W of input, and both are worth paying for if you know what you're pointing them at. The transfer rating is a third, smaller point: no worse than 15ms against no worse than 20ms, which is a published class rather than a measurement, and only decides anything if the thing you're protecting is a desktop with unsaved work. On USB it's the cleaner unit too, with 140W on its top-end port against 100W, and four USB-C sockets against two.
The catch runs the other way on noise, and it's a real one. The DELTA 2 publishes a figure and Goal Zero publishes none for this unit, which isn't evidence the Yeti is louder. It means there's nothing to hold it to. Pair that with the absence of independent hands-on coverage of this SKUB0 and the fan becomes the one spec on the unit you can actually buy that you'll be discovering rather than checking. If it's going next to a bed, that's the sentence on this page to take seriously.
Brand Trust
Selected because: One of these brands still sells the unit on this page and the other replaced it, which makes how each behaves after the sale the live question.
Goal Zero started this category in the US and still builds the most coherent kit around it, with vehicle mounts, Nomad and Ranger panels and the Alta coolers all designed to plug into the same stations. What it has stopped doing reliably is answering the phone. The support record through 2025 and 2026 describes long waits and tickets left sitting, and the official community forums were shut down, which is a strange thing to charge premium money for.
EcoFlow's side of the column is polarised rather than absent, and it has the advantage this page is really about: the DELTA 2 retired into a line that kept shipping, so the want it served has somewhere to go. Note also that the research on this exact Yeti came back empty after roughly 25 targeted searches, with every review found belonging to a different sibling and deliberately excluded rather than misattributedB0. That isn't a knock on the hardware, but it does mean you're buying on the spec sheet and the brand, and the brand is the weaker half of that pair right now.
Your Life, Your Pick
Selected because: Two packs this close pass and fail the same lists, so the value here is seeing which lists they both fail.
Read this grid for the failures, not the wins. The 2,100Wh camping weekend and the 4,685Wh van day are both far outside what either unit is for, and the eight-hour blackout list at 1,645Wh is roughly half-covered by either. The two rows they both clear comfortably, the 320Wh CPAP night and the 670Wh tailgate, are the shape of what a 1kWh station is: an evening of modest draws, not a weekend of everything.
The 910Wh workday is the interesting near-miss, because both units land just under it and neither gets there on paper. That's the clearest signal in the grid. When two units fail the same list by 40 and 70 watt-hours, the tiebreak was never going to be capacity.
Strengths & trade-offs
EcoFlow DELTA 2
Strengths
- +Lighter by 8.3 lb
- +Larger battery capacity
Trade-offs
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Yeti 1000 (6th Gen)'s 4,000, so it wears out sooner.
Goal Zero Yeti 1000 (6th Gen)
Strengths
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Sealed capacity — the DELTA 2 can add batteries to grow past 988Wh; this one can't.
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 unit covers this scenario's 2,100Wh: the DELTA 2 comes up 1,230Wh short (about 41% covered), the Yeti 1000 (6th Gen) 1,260Wh (40%). Treat this as partial cover — enough for the essentials in it, not the whole list.
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
Neither unit
Neither unit carries an eight-hour blackout on one charge. The list runs 1,645Wh, the Yeti holds 840Wh of it and the DELTA 2 870Wh, so both get you most of the evening and neither gets you the night. Which means the spec that reaches morning isn't the pack at all, it's how fast you can put energy back between one outage hour and the next. The Yeti takes solar nearly twice as fast.
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
Both cover the night and it isn't close. A CPAP is about 40W for eight hours, 320Wh, roughly a third of either pack, so capacity decides nothing and the decider is the fan a couple of feet from your head. The DELTA 2 publishes a noise figure. Goal Zero publishes none for this unit, so on the one you can actually buy, the fan is the spec you meet after it arrives.
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
Neither unit
Neither unit quite closes a 910Wh workday. The Yeti stops 70Wh short and the DELTA 2 40Wh short, which is a gap you close by dropping one appliance or letting the laptop finish on its own battery, not by buying a different unit. Don't read the smaller shortfall as an advantage either. Two units that fail the same list by that little have told you capacity isn't the axis here.
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
Either unit
Both carry game day with room left over, 670Wh against 840 and 870Wh usable, and both start the 400W peak without complaint. So this row comes down to what you're hauling from the car, and for the unit you can buy that's 35.3 lbs: a two-hands lift you'll want to do once and then leave where it lands.
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
Neither unit covers this scenario's 4,685Wh: the DELTA 2 comes up 3,815Wh short (about 19% covered), the Yeti 1000 (6th Gen) 3,845Wh (18%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
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
Dead heat — both run this 205W load for roughly 4.2h. Pick on price, weight, or ports.
Planning for more than this? Describe your whole setup and get it sized →
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–58hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–11.6hHigh-Draw Appliances
These reveal the real limitsscale 0–0.9h¹ 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 19, 2026
Verdict: the Goal Zero Yeti 1000 (6th Gen)
Take the Yeti 1000 (6th Gen). It wins first by being the only one of the two still in production, then earns the win on the two specs that actually separate them at this size: a 3,600W peak against the DELTA 2's 2,700W, and 900W of solar input against 500W. Capacity is a wash. 988Wh against 1,024Wh is 840 versus 870Wh usable once you apply a flat 85% allowance for conversion loss, and nobody feels 30Wh. What holds the confidence at six rather than nine is that the Yeti is sealed at 988Wh, priced at the premium end of the category, and has no independent hands-on testing on this exact SKU yetB0. If the DELTA 2 was the unit you actually wanted, EcoFlow's replacement for it is the DELTA 3, and that is the page to read next.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of September 19, 2026. The links below open Goal Zero's current price.
$1,199.95 · direct from Goal Zero
Last checked 16 days ago. Prices move — check before you buy.
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated September 19, 2026
Black Friday · 38 days out
Price to beat:Yeti 1000 (6th Gen) $1,200
We have never seen it discounted, so any real cut would be a first.
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, Food Truck.
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 2 rates 4.1/5 (50th percentile of 27 Everyday-class units), and Yeti 1000 (6th Gen) rates 4.6/5 (74th percentile of 20 Compact-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.
DELTA 2: 50dB Published
50dB is about as loud as moderate rainfall. It is EcoFlow's own rating rather than a reading on a shared bench — makers differ on whether they quote a best case or a figure under load, so treat it as a starting point rather than what you would hear at a bedside. For most people, fan noise around 45dB and up is where sleep starts to suffer.
Yeti 1000 (6th Gen): Sealed at 988Wh
What you buy is the ceiling. There's no expansion battery for this unit, so 988Wh, or 840Wh after a flat 85% usable allowance, is the most it will ever hold. The DELTA 2 beside it does take expansion batteries, but that's a path through EcoFlow's current line rather than something you can act on from this page, because the DELTA 2 itself is no longer sold. Size the Yeti for the loads you have now, and remember that at this scale expansion buys longer runtimes on the same loads anyway, not a house.
Surge Power: Inverter Quality Indicator
The Yeti 1000 (6th Gen) has a 1.8× surge-to-continuous ratio vs the DELTA 2's 1.5×, and the higher absolute ceiling with it — 3,600W against 2,700W. Neither clears the 2× rule of thumb usually quoted for motor startups, so read these as two ceilings rather than two grades of inverter. What decides whether a given motor starts is the ceiling, not the ratio: the DELTA 2 still surges to 2,700W, so check the startup draw of the heaviest thing you plan to run against that figure rather than assuming it trips.
UPS Switchover: ≤15ms vs ≤20ms
Both list a UPS mode, at different rated speeds. The Yeti 1000 (6th Gen) is rated ≤15ms — fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. The DELTA 2 is rated ≤20ms — 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: Identical Five-Year Terms
Both units carry a five-year term, so coverage isn't a tiebreaker in either direction. What's worth noticing is what five years covers on a pack rated for thousands of cycles: the cells outlast the paperwork by decades on either unit, so the warranty is really insurance on the inverter, the ports and the screen. The DELTA 2 carries a second question that no term answers, since it has left EcoFlow's range: confirm what service path exists for a discontinued model before you count on the cover.
Battery Lifespan in Real Years
The Yeti 1000 (6th Gen) is rated for 4,000 cycles vs 3,000. In real life: at daily use, that's 11 vs 8.2 years. At weekend use (twice a week), it's 38 vs 29 years. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
Yeti 1000 (6th Gen): Noise Level Not Disclosed
The DELTA 2 publishes its noise level (50dB); the Yeti 1000 (6th Gen) doesn't publish one. That isn't evidence the Yeti 1000 (6th Gen) is louder — it means there's no figure to hold it to, and no way to compare the two on this without hearing them. If you're buying for a bedroom, a CPAP, or an apartment, treat the DELTA 2's 50dB as the only published number on the table — a spec-sheet figure, not a measurement — and look for hands-on reports of the Yeti 1000 (6th Gen) before deciding.
Full record above — the Test Desk pick is the Yeti 1000 (6th Gen).
Check Yeti 1000 (6th Gen) price →Ownership 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 2 is no longer sold, so there is no price to work its cost per kWh from, and this comparison doesn't quote one. On what you can actually buy today, the Yeti 1000 (6th Gen) works out at $0.30/kWh over its rated life. If you already own the DELTA 2, the hardware comparison still holds: over its rated life the DELTA 2 delivers about 3,072 kWh and the Yeti 1000 (6th Gen) about 3,952 kWh.
Brand trust
EcoFlow
Ecosystem
Largest in portable power — 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 — 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 — Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 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 — 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.
Goal Zero
Ecosystem
Focused rather than sprawling. The current line is built around the 6th-gen Yeti and Yeti Pro stations, with Sherpa power banks covering the under-100Wh tier, Nomad and Ranger solar panels, Alta coolers, and vehicle integration kits for mounting a station in a truck or van. It's a narrower catalogue than EcoFlow's and deliberately so: the accessories exist to work with the stations rather than to fill out a price ladder.
Support
US-based company (Salt Lake City, owned by NRG Energy). Historically considered premium support, but 2025-2026 reports describe long wait times, unresponsive email communication, and tickets going unaddressed for weeks. The "premium support justifies premium pricing" argument is weakening.
Community
Small but loyal — strong following in overlanding and preparedness communities. Official community forums were recently shuttered, frustrating long-time users.
App experience
Rated 4.4/5 iOS (~1,200 ratings) but recent reviews skew negative — recurring connectivity issues, crashes, and stability problems.
Unique strength
Pioneer of the portable power market — strongest brand heritage. US-based company with ruggedized, weather-resistant designs (IP ratings vary by model). Integrated "Yeti-Ready" ecosystem with coolers, lights, and vehicle kits.
Worth knowing
Goal Zero prices at the premium end of the category and used to justify that with support, which is the part that has slipped. The record through 2025 and 2026 describes long waits, unanswered email and tickets sitting for weeks, and the official community forums have been shut down. The hardware heritage is genuine, since this is the company that opened the category in the US, but the service story is no longer the reason to pay more, and the record on newer-model reliability is unsettled enough to read before you commit. Buy from a retailer whose return window you'd actually use.
Analyst note
The difference that decides this page isn't brand character, it's that only one of these brands still sells the unit above. EcoFlow retired the DELTA 2 into a line that kept shipping; the Yeti 1000 (6th Gen) is current, and that is the whole reason it's the pick. Weigh it against the support gap running the other way: EcoFlow's phone and chat desk is polarising but staffed, while Goal Zero's has gone quiet at exactly the point where a premium price is supposed to buy attention. Whichever you end up with, the retailer's return window is the part of your cover that answers fastest.
Growth path
DELTA 2
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,024Wh.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
Yeti 1000 (6th Gen)
FIXED CAPACITYFixed at 988Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 900W of solar. Suitable for a 1-2 panel setup.
Generous port selection supports complex multi-device setups.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Growth only counts if you can still buy in, and the DELTA 2 is no longer sold (EcoFlow points owners to the DELTA 3). That leaves the Yeti 1000 (6th Gen): it is sealed at 988Wh, so buy the size that covers you now. The DELTA 2's expandability still matters if you already own one, but it isn't a reason to pick it over the Yeti 1000 (6th Gen).
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 2
The DELTA 2 has been out long enough for real multi-month evidence, and it reads well: eighteen months of outages, camping and home-office duty came back with strong reliability, fast charging and the expansion path holding upA0A3. The one complaint that repeats is the fan. It triggers at anything above 120W and runs continuously at full load, which is why running medical gear above that threshold in a bedroom means either listening to it or getting an extension cord out of the roomA1. At 1,200W charging it reads as gaming-laptop loud, though dialling the charge speed down in the app quiets itA2.
EcoFlow said on the record that it planned to address fan behaviour in firmware, as it has on other models after launchA4. Treat that as a stated intention rather than a fix you can assume is already on a used unit, and if you're buying second-hand, ask what firmware it's running.
“When charging at 1200W the fans sound like a gaming laptop, though you can lower the charging speed in the app to silence it.”
Sources
portablepowerlab.com
Goal Zero Yeti 1000 (6th Gen)
There is no field evidence for this unit, and that is worth stating plainly rather than papering over. Our own research came back empty after roughly 25 targeted searches across indexed press, YouTube, DIY solar forums and the van-life and overlanding communities: no hands-on reviews, no forum threads, no owner reports for this exact SKU, with Goal Zero's own page showing a single inaccessible reviewB0. Every Yeti 1000 review that did turn up was confirmed to be a different sibling, the Core, the 1000X or the original Lithium, and was excluded rather than quietly attributed to this modelB0. Everything this page says about the Yeti is therefore spec-sheet and brand record, which is a fair basis for a verdict and a poor one for predicting fan noise.
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Fan noise under moderate-to-high load is the dominant, repeatedly-cited complaint; the fan spins up above ~120W. [DELTA 2 · 3 entries]
- A1
“Fans trigger at anything above 120 watts; at maximum load (1,500–1,800W) they run continuously at ~48–55 dB. Powering medical equipment above 120W in a bedroom means listening to the fans or running an extension cable out of the room.”
portablepowerlab.com — EcoFlow Delta 2 Review: 6 Months of Real Use; PCWorld — EcoFlow Delta 2 review · 2026 · [negative]
- A2
“When charging at 1200W the fans sound like a gaming laptop, though you can lower the charging speed in the app to silence it.”
PCWorld — EcoFlow Delta 2 power station review · 2026 · [mixed]
- A3
“After 18 months of real-world testing through multiple power outages, camping trips, and daily home-office use, the unit earned recognition for fast charging, reliable LiFePO4 battery chemistry, and expandability.”
portablepowerlab.com — EcoFlow Delta 2 Review: 6 Months of Real Use · 2026 · [positive]
- A4
“EcoFlow officials indicated they plan to address the fan noise in an upcoming firmware update, as they have for other models after release.”
portablepowerlab.com — EcoFlow Delta 2 Review · 2026 (dated claim — may be partially addressed) · [mixed]
Research compiled September 19, 2026.
Who Should Buy Which
Buy the DELTA 2 if you…
- →You already own a DELTA 2: nothing here is a reason to replace it. 3,000 cycles is decades at weekend use, and 1,800W with a 2,700W peak still starts most of what a household asks of a box this size.
- →You've found one sitting in retailer stock and want to know what you'd be getting: 1,024Wh in a 27 lb case, expandable, six AC sockets, and a fan that spins up above 120WA1. Our record carries a five-year term for the model, but that is the model's term and not a promise about a given seller's unit, so confirm the service path with EcoFlow before you pay.
- →You came here specifically wanting the DELTA 2: EcoFlow's replacement for it is the DELTA 3. That's where to spend your reading, rather than on a unit its own maker has stopped listing.
Buy the Yeti 1000 (6th Gen) if you…
- →You need to start something with a motor in it out of a box one person can still carry, whether that's a pump, a compressor fridge or a circular saw. The 3,600W peak is the reason to be here.
- →You own solar panels or you're about to. The fast input is what keeps a sealed pack from boxing you in, and it turns the Yeti's fixed capacity into a daily allowance instead of a total.
- →You want the ruggedised, vehicle-mounted side of this category: Nomad and Ranger panels, Alta coolers, the mounting kits that put a station in a truck. That kit is the part EcoFlow doesn't sell you.
- →You've got a desk to protect from a flicker rather than an outage, and a transfer rated no worse than 15ms is enough for it.
If neither fits
Anyone whose list is the 2,100Wh camping weekend or the 4,685Wh van day should close this tab. The Yeti covers about 40% of the first and 18% of the second, and no amount of clever loading fixes that. You want a bigger class of station with expansion, or a second battery bank wired into the vehicle, not a choice between two of these.
The Bottom Line
Take the Yeti 1000 (6th Gen), and know that it wins a race with one runner. The DELTA 2 has left EcoFlow's range, and a unit its maker won't sell can't be the recommendation whatever the numbers said. What makes the Yeti a real buy rather than a default is the pairing at the top of this page: a sealed pack with an input fast enough to refill it in a morning, behind an inverter with 900W more startup headroom than the box beside it.
Two honest limits before you click. It's sealed, so what you buy is the ceiling. And no one outside Goal Zero has published a hands-on test of this model yetB0, which means the fan a few feet from your bed is a spec you'll meet on arrival rather than one you can check now. If neither of those bothers you, buy it. If the DELTA 2 was what you came for, go read about the DELTA 3 instead.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 2 discontinued?
Yes. EcoFlow no longer sells it, and its store page now forwards to the DELTA 3, which is the like-for-like replacement. This page stays up because the DELTA 2's specs are still true for the units already out in the world, but it isn't a buying recommendation any more, and the comparison below shows no price for it.
Can I still buy a DELTA 2 from a retailer?
Sometimes, because retailer stock outlives a maker's listing. Two things to check before you do: our record carries a five-year term for the model, so ask EcoFlow how that applies to a reseller's unit and what service exists for a discontinued model. And know the fan up front, since it spins up at anything over 120W.
Is the Goal Zero Yeti 1000 (6th Gen) worth the money?
At $1,200 it sits at the premium end of the category, and what you're paying for is specific: 2,000W continuous with a 3,600W peak, 900W of solar input, a 4,000-cycle pack and a five-year term. What you're not getting is any expansion past 988Wh, or any independent hands-on testing of this exact model yet. If the peak and the input are what you need, it's worth it. If you just need a kilowatt-hour on hand, you're paying for headroom you won't touch.
Which of these will actually start a fridge?
Both sustain a fridge's running draw without trouble. What decides it is the startup spike, and there the ceilings are 3,600W for the Yeti against 2,700W for the DELTA 2, so check the heaviest motor you own against those two numbers rather than against the continuous ratings. Runtime is the tighter limit either way: 840Wh usable at a 150W draw is about five and a half hours (840 divided by 150).
How fast does the Yeti 1000 (6th Gen) recharge from solar?
It accepts up to 900W, so 988Wh from empty is a little over an hour at the rated input and realistically one good morning, since panels rarely make their rating. That's a bit over half the time the DELTA 2 needs from the same array, which is capped at 500W in. In a multi-day outage that difference matters more than the 36Wh of capacity between them.
Where to buy
EcoFlow DELTA 2
No longer sold
Goal Zero Yeti 1000 (6th Gen)Pick
$1,199.95
$1,199.95 · direct from Goal Zero
Last checked 16 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.