Head-to-head test
EcoFlow DELTA 2 vs Goal Zero Yeti 500X
A dollar separates these two, so the only question is what the same money buys: the DELTA 2 hands you twice the battery, six times the outlet and six times the cycle life, and the Yeti 500X answers with half the weight.
Full profiles: EcoFlow DELTA 2 → · Goal Zero Yeti 500X →
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
$499.00 · direct from EcoFlow
Last checked 52 days ago. Prices move — check before you buy.
$499.95 · direct from Goal Zero
Last checked 3 days ago. Prices move — check before you buy.
Spec deltas
A dollar separates them: $499 for the EcoFlow DELTA 2, $500 for the Goal Zero Yeti 500X. After the price, the sheet stops being close. The DELTA 2 holds 1,024Wh to the Yeti's 497Wh and runs an 1,800W inverter against 300W. Twice the battery, six times the outlet, same receipt.
The gap that costs real money is cycle life. Spread $499 across 3,000 cycles of a 1,024Wh pack and the DELTA 2 is contracted for 3,072 kWh over its rated life, or 16 cents a kilowatt-hour. The Yeti's 500 cycles of 497Wh come to 249 kWh, which works out to $2.01. Same drawer, same money, about twelve times the energy before one of them is finished.
The Yeti wins one column and it isn't a fake one. 12.9 lbs is a one-hand carry off a shelf or over a tailgate; 27 lbs is both hands and a straight back. If the whole job is moving a battery from the car to a picnic table and charging phones and a laptop off it, the lighter box is nicer to live with. It's just that at this price, nicer to carry is what you're trading 500 cycles against 3,000 for.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
rated cycles
Put a daily cycle on each and the DELTA 2 has 8.2 years in it against the Yeti's 1.4. The Yeti's replacement comes due with more than three years still left on the DELTA 2's five-year warranty, so the second Yeti isn't on the price tag but it is on the bill. Even at weekend duty the split is 28.8 years against 4.8.
EcoFlow DELTA 2: $499, 1,024Wh, 3,000 cyclesGoal Zero Yeti 500X: $500, 497Wh, 500 cyclesRated lifetime energy works out to 3,072 kWh against 249 kWh
Why it mattersAnyone planning to cycle this daily — a work van, a nightly CPAP, an off-grid cabin — is comparing one purchase against two.
solar input
That throws the sleep decision back onto capacity, and there the DELTA 2's 870Wh of usable energy covers two consecutive 320Wh nights while the Yeti's 422Wh can't finish a second one. In a two-night outage that's the difference between sleeping through both and going looking for an outlet on day two.
The DELTA 2 publishes 50dB under load; the Yeti 500X publishes no noise figure at allReviewers put the DELTA 2's fan trigger at anything above about 120WA1A CPAP is about 40W, or 320Wh across an eight-hour night
Why it mattersThe CPAP buyer should be counting nights, not decibels.
continuous output
It holds the better surge ratio, 2x its rating against the DELTA 2's 1.5x, which sounds like the more capable inverter until you do the multiplication: 2x of 300W is 600W. A compressor that spikes to 600W at switch-on is sitting exactly on the Yeti's ceiling and nowhere near 2,700W. Ratio flatters the small inverter; startup spikes are counted in watts.
Yeti 500X: 300W continuous, 600W surge ceilingDELTA 2: 1,800W continuous, 2,700W surge ceilingThe tailgate profile asks for a 400W peak inside a 670Wh total
Why it mattersIf anything on your list has a compressor or a heating element, the Yeti is out on watts before capacity is even discussed.
weight
So the 14 lbs you save walking in, you pay back in daylight every day after. Off-grid, the DELTA 2 is off the panels by lunch with a full 1,024Wh while the Yeti spends the afternoon working its way back to less than half of that. The carrying advantage is a one-time payment; the input disadvantage recurs.
Yeti 500X: 12.9 lbs, 120W maximum solar inputDELTA 2: 27 lbs, 500W maximum solar inputCapacities of 497Wh and 1,024Wh
Why it mattersThe weight win is real for a single overnight and gone by the second day, so buy the Yeti only when the carry itself is the constraint.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: The price is a wash, so the only money question left is what each battery delivers before it's finished: 3,072 kWh against 249 kWh.
cost / lifetime kWh
Cycle counts fail quietly. Nothing breaks on cycle 501; the pack just settles toward about 80% of what it used to hold, and the Yeti starts that slide after 1.4 years of daily use or 4.8 years of weekends-only. Run the same duty on the DELTA 2 and the figures are 8.2 years and 28.8. One of these is a purchase and the other is a subscription with an irregular billing cycle.
The warranties agree with the chemistry underneath them. Five years against two, at the same money, means Goal Zero commits to standing behind this unit for well under half as long as EcoFlow does while charging you the same. That isn't fine print. It's each manufacturer's own read on how long its box lasts, and both of them are telling you the same thing.
Runtime: Will It Power Your Gear?
Selected because: At a dollar apart, capacity and inverter size are the entire trade — 1,024Wh and 1,800W against 497Wh and 300W.
continuous output
Usable energy is the number to plan around: roughly 870Wh from the DELTA 2 and 422Wh from the Yeti once inverter losses are taken out, and nobody runs a pack to zero anyway. On a light load that's a full extra day. On a heavy one it's academic, because the Yeti's 300W outlet caps what you can plug in long before its battery runs down.
Up front the storage costs the same as the lifetime figures imply: $499 over 1,024Wh is about 49 cents a watt-hour, $500 over 497Wh is about a dollar. The ports follow the same pattern. If your laptop shipped with a 100W USB-C brick, only one of these matches it at the port; the Yeti tops out at 60W.
Portability & Form Factor
Selected because: 12.9 lbs against 27 is the one column the Yeti 500X wins outright, and it deserves a straight hearing.
weight
12.9 lbs is the Yeti's argument and it's a good one. You lift it with one hand, off a shelf, over a tailgate, up a flight of basement stairs without thinking about your back at all. The DELTA 2 at 27 lbs is a two-hand, bend-the-knees lift, and it is the one thing on this page that would make me pause before recommending it.
Light and self-sufficient aren't the same thing, though. The Yeti accepts 120W of solar against the DELTA 2's 500W, so the unit that's easier to carry to the campsite is the one that spends the most daylight tethered to a panel. Weight matters at the trailhead. Input matters every day you're still out there.
What the Specs Don't Tell You
Selected because: UPS switchover, surge ceiling and the single published noise figure all sit outside the spec table and all three change the answer.
rated cycles
Only one of these can sit between your desktop and the wall. The DELTA 2 hands over to battery in 20ms when the grid drops; the Yeti 500X has no UPS switchover, so anything plugged into it goes down with the lights. For a modem, a desk PC, or a medical device you'd rather not restart in the dark, that's a disqualification rather than a preference.
The honest mark against the DELTA 2 is its fan, at 50dB under load. It is also the only measured noise figure on the table, which makes it an odd stick to beat the unit with: EcoFlow published a number and Goal Zero didn't. A blank isn't a win. There is simply nothing to hold the Yeti to and no way to compare the two without hearing both.
Strengths & trade-offs
EcoFlow DELTA 2
Strengths
- +Costs $0.9 less
- +Larger battery capacity
- +Higher AC output
- +Longer warranty
- +Faster solar charging
- +Rated for 3,000 charge cycles — much longer battery lifespan
Trade-offs
- –Significantly heavier (+14.1 lbs), making it harder to move.
Goal Zero Yeti 500X
Strengths
- +Lighter by 14.1 lb
Trade-offs
- –Weaker inverter (-1,500W) limits appliance compatibility.
- –Lacks smartphone app control for remote monitoring.
- –Sealed capacity — the DELTA 2 can add batteries to grow past 497Wh; this one can't.
- –Shorter-lived battery — rated for 500 charge cycles vs the DELTA 2'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 unit covers this scenario's 2,100Wh: the DELTA 2 comes up 1,230Wh short (about 41% covered), the Yeti 500X 1,678Wh (20%). 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 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
Eight hours of the full list needs 1,645Wh and neither unit has it, so the real question is which half of the list survives. 870Wh of usable energy against 422Wh means the DELTA 2 keeps roughly twice as much of it. Partial cover either way: plan the list, not the unit.
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 of these sleep through the night, so capacity settles nothing and the fan would settle it if only one of them published a figure to argue with. Count nights instead. At 320Wh a night, the DELTA 2's 870Wh of usable energy is two nights; the Yeti's 422Wh is one. In an outage that's the whole difference.
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
The DELTA 2 misses this by 40Wh: 910Wh of demand against 870Wh usable. That's near enough that dropping one device, or finishing a little early, closes it on the day. The Yeti isn't in the same conversation — 422Wh against 910Wh is under half a workday.
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 Yeti runs out of watts long before it runs out of watt-hours. A sustained 400W is above its 300W inverter rating, so this stops being a question of energy left in the pack — 422Wh, plenty — and becomes a question of whether the outlet will pass it. The DELTA 2 finishes the job with about 200Wh spare.
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 500X 4,263Wh (9%). 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 2.1h.
$499 list · direct from EcoFlow
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–58hComfort & 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
August 9, 2026
Verdict: the DELTA 2
Buy the DELTA 2. At $499 against $500 there is no budget argument to have, and every spec that decides how much you can run, for how long, and how many times you can do it again lands on EcoFlow's side: 1,024Wh against 497Wh, an 1,800W inverter against 300W, 3,000 cycles against 500. The Yeti 500X's 12.9 lbs is a genuine advantage and it is the only one, so if the deciding constraint is what you can carry one-handed across a parking lot, it earns a look. Otherwise you are paying the same money for a pack that reaches its rated cycle life in 1.4 years of daily use, with the DELTA 2 still holding more than three years of its five-year warranty.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of August 9, 2026. The links below open EcoFlow's and Goal Zero's current prices.
$499.00 · direct from EcoFlow
Last checked 52 days ago. Prices move — check before you buy.
or check the Yeti 500X price$499.95 list
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated August 9, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, RV Living, Home Backup, CPAP, Solar Generator, Tailgating, 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 (48th percentile of 26 Everyday-class units), and Yeti 500X rates 3.5/5 (14th percentile of 22 Personal-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.
50dB Is the Full-Load Number
That 50dB is measured with the unit working — inverter loaded or charger pushing hard. It's also the only measured noise figure anywhere in this comparison, which makes it an odd stick to beat the DELTA 2 with, since it's the unit that published one. Worth knowing before a bedroom install. Worth remembering that a light load and a heavy load are not the same machine.
Yeti 500X: No App Control
Without app control, you have to physically walk to the Yeti 500X to check battery level, adjust settings, or monitor power draw. The DELTA 2 lets you do all that from your phone, including getting low-battery alerts.
Expansion Is the Least of It
Yes, the DELTA 2 accepts expansion batteries and the Yeti 500X is sealed at 497Wh. Don't buy on that. The DELTA 2's base pack already holds twice what the Yeti does, so the growth path is a bonus rather than the argument. If 497Wh genuinely covers your list, the sealed lid isn't the Yeti's problem here. The 500 cycles are.
Ratio Flatters the Small Inverter
The Yeti 500X keeps more headroom above its own rating, 2x against 1.5x, and it doesn't help, because 2x of 300W is still only 600W. Startup spikes are counted in watts, not multiples. The ceiling that decides what you can plug in is 2,700W against 600W.
Only One of These Stays On
The DELTA 2 hands over to battery in 20ms when the grid drops. The Yeti 500X has no switchover at all, so whatever is plugged into it goes down with the lights and comes back needing a button pressed. If you're buying because of a desktop, a modem, or a medical device, this line settles the comparison on its own.
Five Years Against Two
Same price, and EcoFlow commits to five years on the DELTA 2 while Goal Zero commits to two on the Yeti 500X. The terms aren't close, and they line up exactly with the 3,000-cycle and 500-cycle ratings underneath them. Warranty length is the cheapest honest signal a manufacturer gives you.
Battery Lifespan in Real Years
The DELTA 2 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 1,024Wh on the DELTA 2 and 497Wh on the Yeti 500X, so count lifetime energy — roughly 3,072 kWh against 249 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 500X: Noise Level Not Disclosed
The DELTA 2 publishes its noise level (50dB); the Yeti 500X doesn't publish one. That isn't evidence the Yeti 500X 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 500X before deciding.
Full record above — the Test Desk pick is the DELTA 2.
Check DELTA 2 price →or check the Yeti 500X 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 2 wins on both sticker price and long-term value. At $0.16/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Delivers each lifetime kWh for $1.85 less — check the DELTA 2 price →
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 very top of the range, the DELTA Pro Ultra platform stacks batteries and inverters into whole-home backup — a flagship path, not a line-wide feature.
Worth knowing
EcoFlow's support record is genuinely mixed: plenty of hassle-free prepaid-label replacements, alongside a real vein of long waits and refurbished units sent against claims on new hardware. Buying through a retailer with its own returns policy is cheap insurance either way.
Goal Zero
Ecosystem
Focused — a compact current line (6th-gen Yeti and Yeti Pro series), the previous-gen X series still widely sold, Sherpa power banks for the under-100Wh tier, plus Alta coolers, Nomad/Ranger solar panels, and vehicle integration kits
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
The premium-support reputation is the part of Goal Zero that has aged worst — 2025-2026 reports describe long waits and tickets going unanswered for weeks, and the official community forums were shut down. The hardware still feels like the ruggedized, weather-minded gear the brand built its name on.
Analyst note
The pioneer against the volume manufacturer, and on this pair the cliche holds up. Goal Zero brings heritage, an IPX4 build and the tightest ecosystem in the category — coolers, lights, vehicle kits — and charges premium money for the lowest watt-hours per dollar around. EcoFlow brings the deeper lineup, the faster charging, and by far the larger owner community to troubleshoot with, at roughly 31,000 on Reddit alone. Neither support operation is a reason to buy. Pick on the hardware.
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 500X
FIXED CAPACITYFixed at 497Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 120W of solar. Limited to a single portable panel.
Limited ports. You'll likely need a power strip or splitter.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
The Yeti 500X is sealed at 497Wh, which is fine if that covers you. The DELTA 2 starts at 1,024Wh and can grow beyond it with EcoFlow expansion batteries — though at this size expansion means longer runtimes on the same loads, not a path to home backup. More hours, not more house.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 2
Fan noise is the complaint owners and reviewers keep returning to on the DELTA 2A1A2A4. The fan is reported to kick in above roughly 120W and to sit somewhere around 48-55dB with the inverter working hardA1, and at 1,200W of charging one reviewer described it as sounding like a gaming laptop, while noting the app lets you dial the charge rate down and quiet itA2. EcoFlow has said it intends to address fan behavior in a firmware updateA4. Treat that as a stated intention, not a fix you can count on at purchase.
The rest of the field record is favorable. An 18-month run across outages, camping trips and daily home-office use came back positive on charge speed, LiFePO4 reliability and expandabilityA3, which is a long enough window to catch the failures that matter.
“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 500X
The Yeti's field record is complimentary about the object itself: compact for its capacity at 12.9 lbs, and well builtB2, with owners reporting no trouble running two laptops, a Switch, an iPad and several phones off itB3. That's an accurate portrait of what it's for. It's also thin material — closer to retailer reviews and hands-on write-ups than to multi-year ownership reportsB1B3, so weight it accordingly.
The recurring reservation is chemistry, not build quality. This is an older Li-NMC pack rated to 500 cycles, and a newer LFP Yeti 500 has since replaced it with a far higher cycle ratingB1B4. If you want this size and this brand, that's the model to be looking at.
“Weighs 12.9 lbs and is one of the most compact 505Wh power stations, with praised portability and build quality.”
Sources
nomadwatts.com · bestbuy.com · yuenx.com · survival-kompass.de · portablepowernerd.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]
- Compact, well-built, and reliable for small devices, but held back by 500-cycle NMC chemistry vs newer LFP. [Yeti 500X · 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 505Wh Li-ion NMC battery rated for 500 charge cycles to 80% capacity, with a 300W continuous inverter (350W surge, 2,000W peak).”
nomadwatts.com / bestbuy.com — Yeti 500X review · 2026 · [negative]
- B2
“Weighs 12.9 lbs and is one of the most compact 505Wh power stations, with praised portability and build quality.”
yuenx.com / survival-kompass.de — Yeti 500X review · 2026 · [positive]
- B3
“Owners report reliably charging multiple devices — two laptops, a Nintendo Switch, an iPad, and multiple phones — without problems.”
bestbuy.com owner reviews — Yeti 500X · 2026 · [positive]
- B4
“An older NMC design; a newer LFP Yeti 500 has since replaced it with a far higher cycle rating.”
portablepowernerd.com — Yeti 500X/500 review · 2026 · [mixed]
Research compiled August 9, 2026.
Who Should Buy Which
Buy the DELTA 2 if you…
- →You want one box that covers a power cut without a plan behind it: 870Wh of usable energy, an 1,800W outlet, and a 20ms switchover that keeps the modem and the desk PC from noticing.
- →You'll cycle it constantly — a van, a cabin, a CPAP every night, a job site every morning. 3,000 cycles is the spec that pays that back.
- →You own something with a motor or a heating element. 2,700W of surge ceiling is the only one of these two that swallows a real startup spike.
- →You think your needs will grow. The DELTA 2 takes expansion batteries; the Yeti is sealed at 497Wh and that's the end of it.
Buy the Yeti 500X if you…
- →The carry is the actual constraint: a boat, a rooftop, a hospital room, a long walk from where you can park. 12.9 lbs one-handed against 27 lbs two-handed is a real difference and it's the Yeti's whole case.
- →You're already inside Goal Zero's ecosystem of Yeti-Ready coolers, vehicle kits and Nomad panels, and you want the light unit that plugs into gear you own.
- →Your load list is phones, tablets, one laptop and some lights, which is exactly the set owners report it handling without troubleB3, and you'd rather have the smaller footprint than the headroom.
If neither fits
If you're sizing for van life, a full off-grid workday, or a blackout that covers more than the essentials, close this tab. The van-life profile alone asks for 4,685Wh, and eight hours of blackout demand comes to 1,645Wh — the DELTA 2 covers a little over half of that blackout and the Yeti about a quarter. That's a much larger station with a serious solar input, not a choice between these two.
The Bottom Line
Take the DELTA 2. Same money, twice the battery, six times the outlet and six times the cycle life, and the Yeti 500X's answer is 14 lbs. That's a trade worth making exactly once, on the day you carry it, and it charges you every day afterward.
The number worth keeping is the one from the top of the page: over their rated lives these two deliver 3,072 kWh and 249 kWh for the same money. Buy the Yeti only if you'll be lifting it more than you'll be using it.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
The DELTA 2 and the Yeti 500X cost the same, so is there any reason to pick the Yeti?
One reason: weight. 12.9 lbs against 27 lbs is a one-hand carry versus a two-hand lift, and if you're moving it often or far, that's worth something real. On every other axis the DELTA 2 wins by multiples — 1,024Wh against 497Wh, 1,800W against 300W, 3,000 cycles against 500 — for a dollar less.
Can the Goal Zero Yeti 500X run a refrigerator?
Not a full-size one. Its inverter is rated 300W continuous with a 600W surge ceiling, so a compressor that spikes to 600W at switch-on is sitting right at the limit, and any sustained draw over 300W is out of reach regardless of how much charge is left. The DELTA 2's 1,800W continuous and 2,700W surge doesn't have to think about it.
How many nights will each one run a CPAP?
A CPAP at about 40W uses roughly 320Wh over an eight-hour night. The DELTA 2's 870Wh of usable capacity covers two nights with energy left over; the Yeti's 422Wh covers one and can't reach a second. Straight runtime at 40W is about 21.5 hours against about 10.5.
Does the Yeti 500X work as a UPS for a computer?
No. It has no UPS switchover, so when the grid drops, whatever is plugged into it drops with it. The DELTA 2 switches to battery in 20ms, which is what you want behind a modem, a router, or a desktop you'd rather not have to restart. If uninterrupted power is why you're shopping, this alone decides it.
Is the Yeti 500X still Goal Zero's current model at this size?
No — a newer LFP Yeti 500 has replaced it, with a much higher cycle rating. The 500X's Li-NMC pack is rated for 500 cycles, which is the single biggest reason it loses this comparison at the same price. If you want Goal Zero specifically, price the newer model before this one.
Where to buy
EcoFlow DELTA 2Pick
$499.00
$499.00 · direct from EcoFlow
Last checked 52 days ago. Prices move — check before you buy.
Goal Zero Yeti 500X
$499.95
$499.95 · direct from Goal Zero
Last checked 3 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.