Head-to-head test
EcoFlow DELTA 2 vs DJI Power 2000
EcoFlow has stopped selling the DELTA 2, so the only live question left on this page is whether you want twice the battery in a box that weighs nearly twice as much.
Full profiles: EcoFlow DELTA 2 → · DJI Power 2000 →
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
EcoFlow has stopped selling the DELTA 2. Its store page forwards to the DELTA 3 now, which is why there is no price and no buy button on its side of this page. You can still find retailer stock, and plenty of people already own one, but EcoFlow is done making the case for it. That leaves the DJI Power 2000 as the only unit here you can actually order.
It would probably have won anyway. Twice the battery at 2,048Wh, more continuous output, and 1,800W of solar input against 500W. The engine hands it four of the six scenarios on this page, and on the other two neither unit covers the load, which is a size problem no feature fixes.
So the interesting part is not the verdict. It is that the Power 2000 is a lot more machine than the DELTA 2 ever asked anyone to carry: 48.5 lbs against 27, no 12V car socket where the DELTA 2 has one, and a solar ceiling you cannot reach without buying DJI's separate adapter first. If your loads were the kind a 1,024Wh box handled, the honest move is to look at what EcoFlow replaced the DELTA 2 with, not to double your battery because the bigger unit won a page.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
solar input
That inverts how recharge usually scales, and it is the spec that decides a multi-day outage. Refill by mid-morning and the rest of the day's sun becomes a second tank. Spend the whole good part of the day taking on half as much energy and you never get a second tank at all. The catch is real and it is expensive: that 1,800W ceiling does not exist until you have bought DJI's separate solar adapter, because there is no charge controller in the box.
DELTA 2: 1,024Wh capacity, 500W maximum solar inputPower 2000: 2,048Wh capacity, 1,800W maximum solar inputReviewers measured a full solar charge on the Power 2000 in roughly 75 minutes at 1,800WB1DJI ships no built-in solar charge controller; the solar input requires a separate proprietary adapter
Why it mattersIf you are buying for blackouts and you own panels, put the DJI adapter in the same order, or the headline solar number is only a number.
So the unit that covers more of a camping weekend on paper is also the one that makes a 12V fridge run through a 3,000W inverter and an adapter all night to do a job it was built to do off a car socket. The DELTA 2 has the socket and two more AC outlets. It simply does not have the energy to use them for a full weekend.
DELTA 2 ports: 6 AC outlets, 1 12V car socket, 4 USB-A, 2 USB-C at 100WPower 2000 ports: 4 AC outlets, no 12V car socket on our record, 4 USB-A, 4 USB-C at 140WWeekend Camping asks for 2,100Wh: the Power 2000 covers 83% of it and is still 359Wh short, the DELTA 2 is 1,230Wh short
Why it mattersA camper with 12V gear and a working DELTA 2 should stop shopping and keep the fridge where it is. If the DJI is the buy, price a car-socket adapter alongside it.
DJI's quiet is real and worth paying for, but it pays out while the unit is charging or pulling serious wattageB2, not at 3 a.m. eighteen inches from a pillow. And the DELTA 2's charging-noise problem has a software fix its owners already have, which is turning the charge speed downA2. Both of these are quiet on a CPAP. What separates them is whether the room stays quiet while the unit refills.
The DELTA 2's fans trigger above 120W and run around 48 to 55dB when it is working at 1,500 to 1,800WA1The DELTA 2's charge rate can be turned down in the app to silence the fansA2A CPAP night on this page is 320Wh at a 40W peak, against 870Wh of usable capacityReviewers measured the Power 2000 at about 29dB at five feet when its fan engaged, and among the quietest tested even under heavy loadB2
Why it mattersThe CPAP buyer should not upgrade for silence. They should upgrade for the third night the power is still out, which is a capacity and solar question.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: 2,048Wh against 1,024Wh, and after the flat 15% conversion allowance that is 1,741Wh of usable energy against 870Wh.
continuous output
The flat 15% conversion allowance is what decides the remote workday here, and it is worth understanding before you trust any runtime figure. The DELTA 2's nameplate 1,024Wh clears a 910Wh day with room to spare. Its 870Wh of derated usable energy misses it by 40Wh. That is a rounding error on the wrong side of the line, and the Power 2000 finishes the same day with 831Wh still in the tank.
Which is the real shape of this comparison. The DELTA 2 lands right on the edge of the loads people buy these units for. The Power 2000 lands well past them. Whether that is worth carrying depends entirely on whether your day looks like 910Wh or like 1,645Wh, and you are the only one who knows.
Your Life, Your Pick
Selected because: The Power 2000 takes four of the six loads here; on Weekend Camping and Van Life Daily neither unit finishes.
Four of the six rows go to the Power 2000, and the two it does not win it does not lose either, because nobody wins them. Those two are the most useful thing on this page for anyone shopping above 2,000Wh. A 4,685Wh van day leaves even the Power 2000 2,944Wh short, and that is not a gap you close with a better unit in this class. It is a gap you close with a bigger one.
The eight-hour blackout is the row worth reading twice. The Power 2000 finishes it with 96Wh left out of the 1,645Wh it needs, which is under 6% of the load held in reserve. It passes. It does not pass comfortably, and one more thing on the circuit takes it under.
Portability & Form Factor
Selected because: 27 lbs against 48.5 lbs is the one axis the DELTA 2 wins outright, and it is the one you feel every time you move the thing.
weight
27 lbs against 48.5 lbs is the difference between carrying a power station and moving one. At 27 lbs the DELTA 2 goes one-handed from the trunk to the picnic table. At 48.5 the Power 2000 is a two-hands, bent-knees lift you plan a route for. Nearly twice the weight for twice the battery, which is at least honest arithmetic.
This is the one place the retired unit still wins outright, and the one place a buyer should genuinely hesitate. Tailgate Party makes the point better than any spec line: the Power 2000 wins the row using 38% of its capacity against the DELTA 2's 77%, and you would still rather be the person carrying the DELTA 2 across the lot. If your real load is a laptop, some phones and a string of lights, you are buying twice the battery to leave most of it unused.
What the Specs Don't Tell You
Selected because: Fan noise, UPS switchover class, warranty terms and cycle life are where these two records differ in kind rather than in size.
rated cycles
The warranty card is the one to read here, and not for the usual reason. Both records carry five years, so the term settles nothing. The conditions are where they part: DJI's five is an upper bound tied to buying from DJI's own store, and EcoFlow's five is a flat term on a unit EcoFlow no longer sells and offers no out-of-warranty parts or service for. Same number, different footing.
Cycle life is the honest counterweight, and it is bigger than it looks. 4,000 rated cycles against 3,000 sounds like a third more life until you notice the cycles are different sizes: a Power 2000 cycle is 2,048Wh and a DELTA 2 cycle is 1,024Wh, which works out to 8,192 kWh of rated lifetime energy against 3,072. Neither figure is a death date. At the cycle limit the pack sits at roughly 80% of what it started with, which is still a working power station.
Brand Trust
Selected because: One of these brands has just discontinued the unit on this page; the other has been selling power stations since 2024.
EcoFlow retiring the DELTA 2 is not a knock on EcoFlow. It runs the deepest range in portable power and turns it over quickly, which is how a good machine ends up discontinued. What matters for a unit already in your closet is the installed base around it: roughly 31K people on the EcoFlow subreddit, official forums, multiple Facebook groups. A discontinued unit with a community that size is a unit you can still get accessories and answers for.
DJI is the opposite trade. Real hardware pedigree from drones, 700 battery patents behind the pack, a global repair network already built, and no dedicated power station community at all. The conversation happens inside the drone subreddit. Its app scores 3.5 out of 5, though that number covers drones and cameras too, so read it as a DJI score rather than a Power 2000 one. If what you want is a decade of field data on this exact product category, neither of these is that. One has been at it since 2024 and the other just left.
Strengths & trade-offs
EcoFlow DELTA 2
Strengths
- +Lighter by 21.5 lb
Trade-offs
- –Weaker inverter (-1,200W) limits appliance compatibility.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Power 2000's 4,000, so it wears out sooner.
DJI Power 2000
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Significantly heavier (+21.5 lbs), making it harder to move.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
Neither unit
Nobody wins this one. A 2,100Wh weekend leaves the Power 2000 359Wh short at 83% covered, and the DELTA 2 1,230Wh short at about 41%. Read it as Friday night and most of Saturday on either unit, not a full weekend. The tiebreak for campers specifically is not capacity anyway: the DELTA 2 has a 12V car socket and our record shows none on the Power 2000, and most camping fridges are built to plug into one.
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
Power 2000
The Power 2000 finishes this and the DELTA 2 does not, which is the cleanest result on the page. 1,645Wh needed against 870Wh usable leaves the DELTA 2 775Wh short, a little past halfway. Then look at the winner's margin before you relax: 96Wh left over, under 6% of the load. It passes. It does not pass comfortably, and one more thing on the circuit takes it under.
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
A CPAP is about 40W for eight hours, so both of these cover the night at least twice over — capacity isn't the question here. The only published difference is fan noise, and it can't settle this: the Power 2000 is rated 30dB and the DELTA 2 50dB, but they are two makers' figures, each measured its own way. Neither settles which box is quieter at a bedside. Only the Power 2000 is still sold, so a new purchase here is just the Power 2000; the DELTA 2 is a used-market question.
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
Power 2000
The DELTA 2 comes up just short — it needs 910Wh and has 870Wh usable, a 40Wh gap (its nameplate 1,024Wh actually clears this — the flat 15% conversion allowance is what tips it under). Trim that much — one small appliance's worth across the day — and it finishes. The Power 2000 covers it outright with 831Wh to spare.
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
Power 2000
The Power 2000 wins this row on the scoreboard and loses it in the parking lot. Both units run game day without strain, at 38% of the DJI's capacity against 77% of the DELTA 2's, so the number you actually feel is 48.5 lbs against 27 on the walk from the car. A tailgate is a light load in a place you have to carry things to, which is the one shape of day where the smaller box was the better tool.
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 Power 2000 2,944Wh (37%). 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: Power 2000 runs 8.5h vs 4.2h.
$1,299 list · direct from DJI
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 0–116.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–23.2hHigh-Draw Appliances
These reveal the real limitsscale 0–1.7h¹ 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 Power 2000, on Power Score margin
Take the Power 2000, because it is the one of these two you can still order. That is not a backhanded win. 2,048Wh against 1,024Wh is the difference between finishing an eight-hour blackout and stopping a little past halfway through it, and 1,800W of solar input against 500W means the bigger battery is also the faster one to refill in plain clock time. What you give up is real: 48.5 lbs instead of 27, no 12V car socket on our record where the DELTA 2 has one, and a proprietary adapter you have to buy before any of that solar ceiling exists, because DJI ships no built-in charge controller. If 2,048Wh is more station than your loads justify, do not stretch for it. EcoFlow's replacement for the DELTA 2 is the DELTA 3, and that is the comparison worth opening next.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of September 19, 2026. The links below open DJI's current price.
$1,299.00 · direct from DJI
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:Power 2000 $1,299
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
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 Power 2000 rates 4.3/5 (60th percentile of 26 Large-class units).
How the class ranking is computed →Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
DELTA 2: 50dB Published
50dB is about as loud as moderate rainfall. The Power 2000 is rated 30dB — lower, but published by a different maker measuring its own way, so the two figures are not a like-for-like gap. For most people, fan noise around 45dB and up is where sleep starts to suffer.
UPS Switchover: ≤10ms vs ≤20ms
Both list a UPS mode, at different rated speeds. The Power 2000 is rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. 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: Same Five Years, Different Footing
Both records carry five years, so the term itself settles nothing. The conditions are where they separate. DJI's five years is an upper bound that depends on buying the Power 2000 from DJI's own store, so if you buy it anywhere else, read that retailer's terms before you count on the full five. EcoFlow's five years on the DELTA 2 is a flat term, but EcoFlow offers no parts or service once a unit is out of warranty, and the DELTA 2 has left EcoFlow's range. When that term ends on a discontinued unit, it ends completely. If you are buying retailer stock of a DELTA 2, the registration paperwork is worth more than it usually is.
Battery Lifespan in Real Years
The Power 2000 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 2,048Wh on the Power 2000 and 1,024Wh on the DELTA 2, so count lifetime energy — roughly 8,192 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.
Full record above — the Test Desk pick is the Power 2000.
Check Power 2000 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 Power 2000 works out at $0.16/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 Power 2000 about 8,192 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
Roughly 31K people on the EcoFlow subreddit, plus official forums and several Facebook groups, which is the largest community in the category. On a discontinued unit that is worth real money. It is where the accessories, the firmware answers and the is-this-normal threads live, and it is not going anywhere.
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
EcoFlow runs the deepest range in portable power and turns it over quickly, which is how the DELTA 2 ended up retired while still being a good machine. The part that matters once a unit is discontinued: EcoFlow offers no parts or service out of warranty. Support is the polarized piece of the picture, with prepaid-label replacements and quick turnarounds on one side and long waits and refurbished units against new-unit claims on the other. Buying through a retailer with its own returns policy is the hedge.
DJI
Ecosystem
New entrant (2024) — five power station models to date: Power 500, Power 1000 (since superseded by the V2 but still sold), Power 1000 V2, Power 1000 Mini, Power 2000. Buying a "Power 1000" listing? Check which revision it actually ships.
Support
DJI's repair network arrived ready-made from the drone business and it is genuinely global, which is more than most power station brands can claim. What it does not have is a track record on power stations specifically. The network is proven; this product category is not.
Community
No dedicated power station community yet. Discussions happen within r/dji (~250K members, mostly drone users). Very small power-specific presence on Facebook and forums.
App experience
Rated 3.5/5 iOS and Android (DJI Home app ratings reflect entire DJI ecosystem including drones/cameras, not power-station-specific). Users report the on-device screen is more reliable than the app.
Unique strength
Runs quiet — 23-30dB published on most of the range (manufacturer best-case figures), at the quiet end of the category; our record carries no figure for the Power 1000 V2. Fast wall charging, quickest on the Power 1000 V2 at ~56 min — that figure is the V2's, not the whole line's. 700+ battery patents from drone R&D. SDC ports for ultra-fast DJI drone charging. Premium industrial design and build quality. LFP batteries rated for 4,000+ cycles.
Worth knowing
DJI started selling power stations in 2024, so the long-term field data other brands have simply does not exist yet. Two practical catches worth pricing in: there is no built-in solar charge controller, so the 1,800W solar input needs a separate proprietary adapter, and the SDC fast-charge ports only pay off if you already own DJI gear. The app scores 3.5 out of 5, but that rating covers drones and cameras too, so read it as a DJI number rather than a Power 2000 one.
Analyst note
One of these brands helped write the category's playbook. The other arrived in 2024 with 700 battery patents out of drone R&D and no power station history at all. EcoFlow's advantage is breadth and community; DJI's is build quality and the fact that its unit is current. On this particular page the newer entrant wins by default, because EcoFlow has stopped selling its half of the comparison.
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.
Power 2000
EXPANDABLESupports DJI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 2,048Wh.
Accepts up to 1,800W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are DJI-specific. You're investing in the DJI ecosystem.
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 Power 2000: it starts at 2,048Wh and takes DJI expansion batteries, so the ceiling moves if your needs do. The DELTA 2's expandability still matters if you already own one, but it isn't a reason to pick it over the Power 2000.
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 solid multi-month data, and the read has been stable: reliable, good value, and loudA0. The noise complaint is specific rather than vague. The fans spin up above 120W and run somewhere around 48 to 55dB when the unit is working at 1,500 to 1,800WA1. One reviewer charging at 1,200W said it sounded like a gaming laptop, and noted you can turn the charge rate down in the app to quiet itA2.
Everything else reads well. Eighteen months of outages, camping trips and home-office use produced praise for fast charging, the LiFePO4 pack and the expansion pathA3. EcoFlow said it intended to address the fan noise in firmware, as it has on other models after releaseA4, which is worth knowing if you are buying retailer stock: how a given unit behaves may depend on how recently it has been updated.
“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
DJI Power 2000
The Power 2000's field record is short and uniformly positive, which is exactly what a unit this new produces. It is review-site coverage, not multi-year ownershipB0. What is there agrees on three things: it charges fast, it runs quiet, and it is built like professional equipmentB1B2B3.
The specifics carry more than the summary does. A full wall charge in about 90 minutes, with some reviewers measuring closer to an hour, and a full solar charge in roughly 75 minutes at 1,800WB1. About 29dB at five feet when the fan engages, and among the quietest units tested even under the heaviest loadsB2. Flame-retardant materials, 26 temperature sensors, 21 fuses and a frame rated to hold a one-ton static loadB3, which is either reassuring or absurd depending on where you are putting it. On a jobsite it is reassuring.
“Among the fastest-charging tested — a full wall charge in about 90 minutes (reviewers measured even faster, roughly an hour), and up to 1,800W of solar input for a full solar charge in about 75 minutes.”
Sources
bobvila.com · t3.com · thesolarlab.com · campingsolar.us · protoolreviews.com · greenerideal.com · dronexl.co
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]
- Standout fast charging (wall and 1800W solar), near-silent operation, and an unusually robust safety-focused build are the consistent praise. [Power 2000 · 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
“Among the fastest-charging tested — a full wall charge in about 90 minutes (reviewers measured even faster, roughly an hour), and up to 1,800W of solar input for a full solar charge in about 75 minutes.”
bobvila.com / t3.com — DJI Power 2000 review · 2025-2026 · [positive]
- B2
“One of the quietest power stations tested — only about 29 dB at 5 feet when the fan kicked in, virtually silent, and it stayed among the quietest units even under the heaviest loads.”
bobvila.com / thesolarlab.com — DJI Power 2000 review · 2025-2026 · [positive]
- B3
“Built with an eightfold protection system — flame-retardant materials, a nano-coated BMS, 26 temperature sensors, 21 fuses, and structural reinforcement rated to support a one-ton static load — positioning it as one of the safest, most robust units on the market.”
campingsolar.us / protoolreviews.com — DJI Power 2000 review · 2025-2026 · [positive]
Research compiled September 19, 2026.
What Owners Actually Report
Drawn from 245 comments on independent review channels — not from retailer reviews, which skew to the first week of ownership. Each line is our summary of one commenter's claim, linked to the original. We record what they said, including where it contradicts the spec sheet.
EcoFlow DELTA 2
224 claims from 155 comments · 178 from owners · 60 with figures
- Runtime
- 32 · 13% negative
- Price & value
- 38 · 4% negative
- Charging
- 17 · 23% negative
- Durability
- 22 · 67% negative
- Warranty & support
- 22 · 59% negative
What owners complain about
Ignores solar unless he unplugs it from the wall, so he switched to the AC180.
Solar inputowner63 agreedsource →
His Delta 2 went bad three months after purchase and EcoFlow agreed it was defective.
Durabilityownerafter 3 months236 agreedsource →
Past 30 days the five-year warranty only gets a refurbished unit covered for 30 days.
Warranty & supportowner236 agreedsource →
What owners praise
DELTA 2 plus extra battery and 600W solar cost ~$1200 and paid for itself in under 2 years in California.
Price & valuemeasuredowner736 agreedsource →
Batteries still hold 98%+ capacity, ahead of the 80%-at-10-years warranty curve.
Durabilitymeasuredowner736 agreedsource →
Gets 180-190W into it from a 100Ah LiFePO4 via XT60i cable, no converter needed.
Chargingmeasuredowner106 agreedsource →
DJI Power 2000
143 claims from 90 comments · 58 from owners · 5 with figures
- App & firmware
- 24 · 42% negative
- Other
- 21 · 36% negative
- Build quality
- 25 · 72% negative
- Durability
- 11 · 100% negative
- Warranty & support
- 8 · 34% negative
What owners complain about
With the expansion battery he only gets 2800Wh on DC.
Runtimemeasuredownersource →
DJI told him all Power 2000 units have an EMI issue with no fix; his Mac Mini coil-whined.
Build qualityowner5 agreedsource →
3600W surge is not bad but lower than some comparable units.
Inverter & surgemeasuredownersource →
What owners praise
Claims are weighted by how specific they are, whether the commenter owns the unit, and how many readers agreed. Comments that mention a product under a rival's review count for more, because the commenter had no reason to be there. This is what buyers report, not our test results — for measurements we ran ourselves, see the methodology.
Who Should Buy Which
Buy the DELTA 2 if you…
- →You already own one: keep it. 3,000 cycles is 8.2 years of daily use or 29 years of weekend use, and at the end of that the pack is still at roughly 80%. Nothing about EcoFlow discontinuing the model makes the unit in your closet worse.
- →You want a 12V car socket, six AC outlets and a 27 lb carry, and you have found retailer stock: the unit is still the unit, and 870Wh of usable energy still covers a CPAP night four times over. Understand that you are buying without EcoFlow's own store behind it, and that EcoFlow does not do out-of-warranty service.
- →You are replacing a DELTA 2 and want the same shape of machine rather than a bigger one: the DELTA 3 is where EcoFlow points you, and that is a different page than this one.
Buy the Power 2000 if you…
- →Your outage list looks more like 1,645Wh than 910Wh. The Power 2000 finishes an eight-hour blackout; the DELTA 2 stops at about 53% of it.
- →You own panels and you are buying for multi-day outages. 1,800W of solar input refills 2,048Wh in a bit over an hour at the rated ceiling, which is the single strongest thing about this unit. Order DJI's solar adapter in the same basket, because there is no charge controller in the box.
- →You already own DJI gear. The SDC ports charge drone batteries directly, which nobody else offers and nobody outside the DJI ecosystem can use.
- →You need a UPS for a desktop with unsaved work on it. The Power 2000 is rated no worse than 10ms against the DELTA 2's 20ms ceiling, and the fussiest PC power supplies sit right on that 20ms line.
If neither fits
If your day looks like the 4,685Wh van load on this page, neither of these is your unit and choosing between them changes nothing. The Power 2000 is still 2,944Wh short of it. You want a larger station, or a base unit and an expansion battery designed to be lived on, not a portable that gets partway. The same answer applies from the other end: if all you actually run is a laptop, a phone and some lights, 2,048Wh at $1,299 is a lot of battery to carry to a picnic table, and far smaller units go in a backpack.
The Bottom Line
Buy the Power 2000, because it is the only one of these two you can buy, and because it would have earned it regardless. Twice the battery, a solar ceiling that refills it faster in clock time than the smaller unit refills itself, and four of the six scenarios on this page. The DELTA 2 was a good machine and still is if you own one. It just is not a purchase decision anymore.
The question worth carrying away is not which of these wins. It is whether 48.5 lbs and 2,048Wh is the right amount of station for your actual loads. If it is, put the solar adapter in the same order. If it is not, EcoFlow's replacement for the DELTA 2 is the DELTA 3, and that is the page you want next.
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 store page now forwards to the DELTA 3, which is the replacement in EcoFlow's range. You can still find retailer stock and the hardware has not changed, but there is no price or buy button for it here because EcoFlow no longer sells it. If you already own one, nothing about the retirement affects the unit itself.
Should I buy a DELTA 2 if I can still find one, or get the DJI Power 2000?
If you find a DELTA 2 in stock and your loads fit inside 870Wh of usable energy, it is still a good machine at 27 lbs with a 12V car socket the DJI does not have. But the Power 2000 is the one with a future: twice the battery at 2,048Wh and a maker still selling and supporting it. For anything longer than an evening's loads, take the DJI.
Can the DJI Power 2000 run a house during a blackout?
It covers an eight-hour blackout's worth of essentials with 96Wh left out of the 1,645Wh that load needs, so it passes with under 6% in reserve. It is not whole-home backup. 3,000W of continuous output runs a fridge, lights, routers and a few appliances at once, not an air conditioner and an electric range. For an outage longer than a day, the 1,800W solar input matters more than the battery does.
Why is the DJI Power 2000 so much heavier than the DELTA 2?
Because it holds twice the energy: 2,048Wh against 1,024Wh, at 48.5 lbs against 27. That is 21.5 lbs of extra weight for 1,024Wh of extra battery. The practical version is that the DELTA 2 is a one-handed carry and the Power 2000 is a two-handed lift, which is the whole argument against buying more station than your loads need.
Does the DJI Power 2000 need a special solar adapter?
Yes. There is no built-in solar charge controller, so reaching its 1,800W solar input means buying DJI's separate proprietary adapter. Budget for it in the same order if solar is any part of why you are buying, because that 1,800W figure is the biggest single advantage this unit has and it does not exist out of the box.
Brand matchup
EcoFlow vs DJI: measured across every matchup →Where to buy
EcoFlow DELTA 2
No longer sold
DJI Power 2000Pick
$1,299.00
$1,299.00 · direct from DJI
Last checked 16 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.