Head-to-head test
EcoFlow DELTA 2 vs Goal Zero Yeti 700
The DELTA 2 has left EcoFlow's range, so only one of these is buyable and it happens to be the smaller one: the Yeti 700 starts every load on this page and clears exactly one of six scenarios.
Full profiles: EcoFlow DELTA 2 → · Goal Zero Yeti 700 →
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
EcoFlow no longer sells the DELTA 2. Its store page now forwards to the DELTA 3, which means half of this comparison is a unit you can only get secondhand or from whatever retailer stock is left. So the live question isn't which of these two to buy. It's whether the Yeti 700 is the right box for you now that it's the only one on the shelf.
The honest answer starts with the fact that it's a smaller unit than the one you came here for. 677Wh against 1,024Wh, 600W of continuous output against 1,800W, 200W of solar input against 500W. The column the Yeti wins outright is weight: 20.3 lb against 27, which is the difference between carrying it one-handed to the picnic table and thinking about it first.
Power isn't what limits this unit, though. It starts every load in all six of our scenarios, the 400W tailgate peak included, and then runs out of energy on five of them. A weak inverter you have to design around. A small tank you just refill, and refilling is the thing the Yeti happens to be good at.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
It isn't losing this on power. The hardest moment in that scenario is a 400W draw and the Yeti starts it without complaint; it simply runs dry before the coolers and the speakers are done. Which means every time you size this unit off its 677Wh label, you are planning around roughly a hundred watt-hours you will never get to spend.
Yeti 700 nameplate capacity is 677Wha flat 15% conversion allowance is applied to every unit here, giving 575Wh usablethe Tailgate Party scenario asks for 670Wh
Why it mattersSize the Yeti 700 to 575Wh instead of 677Wh and it stops letting you down at the end of the day.
The gap it can't close on paper is smaller than what a morning of sun puts back. 335Wh at 200W is under two hours of panel time. The small tank stops being the constraint the moment daylight is part of the plan, because you're topping it up between loads instead of rationing it across the day.
the Yeti 700 accepts 200W of solar inputits capacity is 677Whthe Remote Workday scenario leaves it 335Wh short of the 910Wh it needs
Why it mattersIf you camp or work outdoors with a panel, buy on weight and stop worrying about the 677Wh. If you're indoors in a February blackout, that refill never happens and you should be shopping a size up.
rated cycles
Its longevity is a calendar advantage rather than an energy one. 11 years of daily use against 8.2, and it earns those extra years by doing less work per day. That is genuinely good news for the person running a CPAP and a phone off it. It is the wrong kind of good news for anyone who'd be draining it flat every evening.
the Yeti 700 is rated for 4,000 cycles, the DELTA 2 for 3,000a Yeti cycle is 677Wh; a DELTA 2 cycle is 1,024Whtotal rated lifetime energy comes to about 2,708 kWh for the Yeti against 3,072 kWh for the DELTA 2
Why it mattersLight, repeated use is where the Yeti's chemistry pays. Heavy daily use is the case where a 4,000-cycle rating flatters a unit that's simply too small for the job.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: The Yeti 700 starts every load in all six of these and finishes one, which is the whole shape of the decision.
One win in six looks brutal until you read which one. The Yeti clears the CPAP night with 255Wh still in the tank, and that is the job most people buying a unit this size are actually buying it for. The misses include a van life day asking 4,685Wh and a weekend camp asking 2,100Wh, which no 677Wh box was ever going to touch. Those aren't failures. They're the wrong scenarios for this unit.
The two that sting are the tailgate at 95Wh short and the remote workday at 335Wh short. Both sit within a morning's solar of being solved, and neither is within reach of a heavier load list. That's the line. The Yeti 700 is a one-load, one-night unit that recovers well, not a unit that carries a household through anything.
Runtime: Will It Power Your Gear?
Selected because: 677Wh on the label becomes 575Wh in practice, and on the 670Wh tailgate load that 95Wh is the difference between finishing and not.
continuous output
The number that matters on this page is 575Wh, not 677Wh. The 15% held back is a flat allowance applied to every unit here rather than a measurement of this one, but it's the right instinct: nobody drains a pack to zero and nothing converts for free. Plan to the derated figure and the Yeti behaves exactly as advertised.
Against the DELTA 2's 870Wh usable, the Yeti gives up about a third of the energy. Where that lands depends entirely on whether your evening is one appliance or four.
Portability & Form Factor
Selected because: 20.3 lb against the DELTA 2's 27, the one column where the smaller unit is simply the better one.
weight
20.3 lb is roughly a packed carry-on, and it's the one spec here where the Yeti isn't apologizing for being the small one. 6.7 lb separates it from the DELTA 2, which doesn't sound like much until you're carrying one across a field, up a set of basement stairs, or in and out of a trunk twice a weekend.
The ports track the size. Two AC outlets against six means the Yeti asks you to choose what gets plugged in, which for a unit you'll be running one load at a time anyway is less of a compromise than it looks. Two USB-A, two USB-C with 100W on the C port, one 12V car socket. That's a weekend's worth of devices, not a household's.
What the Specs Don't Tell You
Selected because: Five cards fire on this pair, and the one worth your time is the noise figure Goal Zero doesn't publish.
rated cycles
The card worth reading twice is the one where Goal Zero doesn't publish anything. EcoFlow listed a noise figure for the DELTA 2; Goal Zero lists none for the Yeti 700, and an absent number is not a quiet one. It means there's no claim to hold them to and no way to settle it without putting the thing on a table beside you at 2 a.m.
The warranty card is a wash at five years each, and the cycle card is the Yeti's best moment on this page. What's left is the one structural limit: 677Wh is the ceiling, permanently.
Strengths & trade-offs
EcoFlow DELTA 2
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Yeti 700's 4,000, so it wears out sooner.
Goal Zero Yeti 700
Strengths
- +Lighter by 6.7 lb
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Weaker inverter (-1,200W) limits appliance compatibility.
- –Sealed capacity — the DELTA 2 can add batteries to grow past 677Wh; 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 700 1,525Wh (27%). 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 of these finishes this one. The Yeti 700 covers about 35% of the 1,645Wh and the DELTA 2 about 53%, and the difference between them is academic when both leave the lights off before morning. The useful reading isn't which gets further. It's that an eight-hour outage sits above this whole size class, and a unit you refill from a panel is only an answer if the sun comes up before your fridge gives up.
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 clear this one, which makes it the row where these two are genuinely interchangeable on capacity: 320Wh of demand, and the Yeti still holds 255Wh when the alarm goes off. So it comes down to what's sitting next to your head. EcoFlow published a noise figure for the DELTA 2 and Goal Zero published none for the Yeti 700, and an absent number is not a quiet one. Weight breaks the tie for anyone who moves it, at 20.3 lb against 27.
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 finishes the 910Wh this day asks for. The DELTA 2 misses by 40Wh, close enough that skipping one coffee reheat covers it; the Yeti 700 misses by 335Wh, which is a real hole. Since the DELTA 2 is no longer sold, the practical question is whether you'd accept ending the Yeti's day early, trim the list, or read this row as the scenario telling you to buy a size up.
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 2
The DELTA 2 takes this row on the numbers with 200Wh to spare, and you can't buy a DELTA 2, so read it as a warning rather than a recommendation. The Yeti 700 lands 95Wh short, about 86% of the way through. Its nameplate 677Wh would clear the 670Wh this needs; the flat 15% conversion allowance is what tips it under. If tailgating is the reason you're shopping, that 95Wh is the entire argument for buying something bigger than either of these.
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 700 4,110Wh (12%). 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
For this load: DELTA 2 runs 4.2h vs 2.8h.
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 700
Buy the Yeti 700, because it is the only one of these two you can still buy. EcoFlow has pulled the DELTA 2 and its own store page now forwards to the DELTA 3. That is a structural win rather than a flattering one, so here is the honest shape of it. The Yeti's 677Wh nameplate works out to 575Wh usable against the flat 15% conversion allowance this site applies to every unit, and that figure clears a CPAP night with 255Wh spare while falling 95Wh short of the tailgate load and 335Wh short of a remote workday. It starts everything, the 400W tailgate peak included. It just runs out. At 20.3 lb it is the easiest unit here to carry to wherever you need it, 4,000 rated cycles works out to about 11 years of daily use, and the warranty runs five years. If you came looking for the DELTA 2's 1,024Wh and 1,800W, the Yeti 700 is not that unit, and the DELTA 3 is where EcoFlow now sends you.
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.
$699.95 · direct from Goal Zero
Last checked 28 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 · 26 days out
Price to beat:Yeti 700 $700
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 700 rates 3.6/5 (16th 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 700: 677Wh Is the Ceiling
The Yeti 700 is sealed. What you buy is what you'll still have in five years, with no expansion battery, no second pack, and no upgrade path except buying another unit. That's the honest catch on our pick and it's a real one, because the DELTA 2 could take expansion batteries and the DELTA 2 is no longer sold. If you can already see your needs growing past 677Wh, the answer isn't a Yeti 700 you plan to supplement later. It's a bigger station bought once.
Warranty: Five Years Each, No Tiebreak
Both units carry a five-year term, so coverage decides nothing here. What's worth knowing is what five years means against a pack rated for 4,000 cycles: at daily use the Yeti 700's cells are rated to outlast its warranty by roughly six years, so the cover is protection against a defect rather than against wear. Register it and keep the receipt. The paperwork is the part that fails people, not the chemistry.
Battery Lifespan in Real Years
The Yeti 700 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. One caution reading years across different sizes: a cycle is 677Wh on the Yeti 700 and 1,024Wh on the DELTA 2, so count lifetime energy — roughly 2,708 kWh against 3,072 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.
Yeti 700: No Published Noise Figure
Goal Zero doesn't publish a noise level for the Yeti 700. That isn't evidence it's loud, it's the absence of evidence either way, and it means there's no claim to hold them to if the fan turns out to be intrusive. EcoFlow published a figure for the DELTA 2, which at least gives you something to argue with. If this is going in a bedroom, beside a CPAP, or into a studio apartment, it's the one spec you should hear for yourself before the return window closes.
Full record above — the Test Desk pick is the Yeti 700.
Check Yeti 700 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 700 works out at $0.26/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 700 about 2,708 kWh. One caution on the lifespan row: the Yeti 700 takes longer to reach its cycle rating, but a cycle moves a different amount of energy on each unit — the DELTA 2 still delivers more over its shorter horizon. Years measure wear, not usefulness.
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 — a compact current line (6th-gen Yeti and Yeti Pro series), the previous-gen X series now out of stock across every model on Goal Zero's own store (checked 2026-09-13: 200X, 500X, 1000X, 1500X, 3000X, 6000X, some listed only as open-box), so buying one new means finding retailer stock, Sherpa power banks for the under-100Wh tier, plus Alta coolers, Nomad/Ranger solar panels, and vehicle integration kits
Support
US-based in Salt Lake City, owned by NRG Energy, and historically the reason people paid Goal Zero's prices. That's the part that has changed. Reports through 2025 and 2026 describe long waits, unanswered email, and tickets sitting untouched for weeks, which matters more than usual on a unit whose five-year warranty is one of its selling points.
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 has shuttered its official community forums, and the previous-generation X series is out of stock across Goal Zero's own store. The 6th-gen line the Yeti 700 belongs to is the current one, so support and parts should track it. But this is a narrower operation than it was, and the premium-price-for-premium-service trade it used to offer is not the one on the table today.
Analyst note
This is a brand comparison with one live side. EcoFlow runs the deepest catalogue in portable power and moves hardware fast enough that a model can get retired out from under a comparison page, which is exactly what happened to the DELTA 2. Goal Zero moves slower, builds ruggeder, and has been coasting on a support reputation its own customers say it no longer earns. If you're buying the Yeti 700, buy it for the hardware, not for the badge.
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 700
FIXED CAPACITYFixed at 677Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 200W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
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 700: it is sealed at 677Wh, 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 700.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 2
Eighteen months of testing across outages, camping trips and daily home-office use came back positive on reliability, charging speed and the expansion pathA3, with fan noise the one consistent complaint across sourcesA1A2A4. The fans trigger above 120W and run at roughly 48 to 55 dB at full load, which is why the advice from people who actually lived with it was to run an extension cord out of the bedroom rather than sleep beside it under loadA1. At 1,200W of charging it got compared to a gaming laptop, though the app lets you throttle the charge rate to quiet it downA2. EcoFlow said it intended to address the noise in firmwareA4. All of that is now history worth knowing if you own one, and nothing more than history.
“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 700
Field data on the Yeti 700 is thin, and what exists is product-level rather than long-term ownershipB0. A gear review pegged it as lightweight and simple, good for quick camping trips and device charging, and explicitly not the most powerful or capable unit in its classB3, which matches every number on this page. The IPX4 water resistance and temperature tolerance come up as real strengths for outdoor useB2. The 4,000-cycle LiFePO4 chemistry and the decade-of-daily-use framing come from Goal Zero's own materials rather than from ownersB1B4, so read the longevity claim as a specification rather than a track record.
“A 6th-generation 677Wh compact power station on upgraded LiFePO4 chemistry rated for 4,000+ cycles — daily use for over 10 years.”
Sources
goalzero.com · amazon.com · campingsolar.us · outdoorgearlab.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
- Fan noise under moderate-to-high load is the dominant, repeatedly-cited complaint; the fan spins up above ~120W. [DELTA 2 · 3 entries]
- Modern LFP (4,000+ cycles), IPX4 ruggedness, and light, simple portability are the highlights; modest power and capacity. [Yeti 700 · 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]
- B1
“A 6th-generation 677Wh compact power station on upgraded LiFePO4 chemistry rated for 4,000+ cycles — daily use for over 10 years.”
goalzero.com / amazon.com — Yeti 700 · 2026 · [positive]
- B2
“Carries an IPX4 water-resistance rating and can handle extreme temperatures — a rugged, outdoor-ready design.”
goalzero.com / campingsolar.us — Yeti 700 review · 2026 · [positive]
- B3
“Ideal for quick camping trips and device charging — not the most powerful or capable, but lightweight and simple, appealing to portability-focused users.”
outdoorgearlab.com — Yeti 700 review · 2026 · [mixed]
- B4
“Part of Goal Zero's 6th-gen LiFePO4 Yeti family — a modern LFP replacement for the older NMC X-series.”
goalzero.com — Yeti 6th-gen family · 2026 · [positive]
Research compiled September 19, 2026.
Who Should Buy Which
Buy the DELTA 2 if you…
- →Nobody, new. EcoFlow has stopped selling the DELTA 2 and its store page now forwards to the DELTA 3. If the 1,024Wh and the 1,800W inverter is what brought you here, that's where to look.
- →If you already own one, nothing on this page is a reason to replace it. 3,000 cycles is 8.2 years of daily use and you are almost certainly a fraction of the way in.
- →If you've found one sitting in a retailer's last stock, go in knowing what it is: no maker-side supply behind it, and fans that are its known weak point above 120WA1.
Buy the Yeti 700 if you…
- →The person running a CPAP and a phone overnight. 320Wh of demand against 575Wh usable means you wake up with 255Wh unspent, and you carried 20.3 lb to get it there.
- →The weekend camper with a panel. 200W of solar input refills the whole pack in about three and a half hours of strong sun, which turns a small battery into a renewable one.
- →Anyone who lifts it often, out of a trunk, over a tailgate, up basement stairs. It is the lighter unit here by 6.7 lb and that is felt every single time.
- →The buyer who wants five years of cover on a LiFePO4 pack rated for 4,000 cyclesB1 and genuinely never needs more than 600W at once.
If neither fits
If your list looks like the 8-hour blackout at 1,645Wh or a van life day at 4,685Wh, neither box on this page is the answer and no amount of comparing them will change that. You want a station several times this size with an inverter to match. Start from the scenario's own watt-hours and size up from there, rather than talking yourself into the biggest of the small units.
The Bottom Line
The Yeti 700 wins this by being the one you can still buy, and it's worth knowing exactly what that gets you: 575Wh of usable energy, 600W of output, 20.3 lb, five years of warranty, and a pack rated for 4,000 cycles. It starts every load these six scenarios throw at it. It finishes one of them. Everything good and everything limiting about this unit lives in the space between those two sentences.
So if your evening is a CPAP, a phone, a laptop and a couple of lights, buy it and enjoy carrying it. If it's a cooler running through a weekend, buy a panel alongside it and plan on a morning of sun every day. And if it's a blackout with a fridge in it, close this tab. The DELTA 2 isn't coming back, the DELTA 3 is where EcoFlow points you, and neither of these two boxes was ever the right size for that night.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 2 discontinued?
Yes. EcoFlow has stopped selling it and its own store page now forwards to the DELTA 3, which is the replacement the maker points buyers toward. Its specs are still accurate and there may be retailer stock floating around, but there's no manufacturer-side supply behind it, which is why this page shows no price for it.
Can the Goal Zero Yeti 700 run a CPAP all night?
Yes, comfortably. A CPAP draws about 40W, so eight hours is roughly 320Wh against the Yeti's 575Wh of usable energy, and you'd finish the night with 255Wh spare. The unknown isn't capacity, it's noise: Goal Zero doesn't publish a figure for this unit, so if you sleep lightly, find a hands-on report before you commit.
Is 677Wh enough for camping?
For a full weekend it isn't. Our weekend camping load comes to 2,100Wh and the Yeti covers about 27% of it. For a single night of lights, phones and a fan it's fine, and with a panel you can keep it fine indefinitely, since 200W of input refills the pack in about three and a half hours of strong sun. For a cooler running unattended across two days, it isn't enough.
Is the Yeti 700 more powerful than the DELTA 2?
No, not on any power spec. The DELTA 2 runs 1,800W continuous with a 2,700W surge; the Yeti 700 runs 600W with a 1,000W surge, and holds 677Wh against 1,024Wh. What the Yeti has instead is 4,000 rated cycles against 3,000 and a 20.3 lb carry weight against 27. It's the lighter, longer-lived, smaller unit, not the stronger one.
What should I buy instead of the EcoFlow DELTA 2?
EcoFlow's own answer is the DELTA 3, which is where its DELTA 2 store page now forwards. If you were cross-shopping the DELTA 2 against the Yeti 700 because you wanted the lighter box, the Yeti 700 is still sold and still 20.3 lb. If you wanted the 1,024Wh and the 1,800W inverter, the Yeti doesn't replace either of those and you should follow EcoFlow's redirect.
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Where to buy
EcoFlow DELTA 2
No longer sold
Goal Zero Yeti 700Pick
$699.95
$699.95 · direct from Goal Zero
Last checked 28 days ago. Prices move — check before you buy.
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