Head-to-head test
EcoFlow DELTA 2 Max vs DJI Power 1000
Both boxes charge you the same $0.17 per lifetime kilowatt-hour, so the money question is already answered; what is left is a sizing question, and the loads people buy these for sit in the band between 870Wh and 1,741Wh usable, where only one of them finishes.
Full profiles: EcoFlow DELTA 2 Max → · DJI Power 1000 →
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
The DELTA 2 Max holds exactly twice the battery of the Power 1000 and costs $350 more, $1,049 against $699 (last listed price), and by the one measure that cancels size out, what a kilowatt-hour costs you across the pack's rated life, the two come out level. So the price tag is not the argument on this page. The argument is whether you need the second half of that battery.
You find that out during the outage, not in the spec table. Our 8-hour blackout profile asks for 1,645Wh. The Power 1000 has 870Wh usable once the flat 15% allowance comes off its nameplate, so it covers about four of those eight hours and then it is a box with a screen. The DELTA 2 Max reaches the end of the night with 96Wh left, about 5% of what it started with, so 'finishes' is the honest word and 'comfortably' is not.
The Power 1000's case is physical and it is real. It weighs 28.7 lbs against 50.7, the difference between a one-hand carry and a bent-knees lift, and reviewers consistently describe it as one of the quietest stations in its class, barely audible even at a full-speed wall chargeB1B3. If that small quiet box is what you are actually shopping for, DJI's current version of it is the Power 1000 V2. The base Power 1000 earns a look only when it is discounted enough to be the cheaper way into the same idea.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
rated cycles
Add a third number and the tie stops being neutral. The 8-hour blackout profile needs 1,645Wh, which is more than the Power 1000's 870Wh usable and less than the DELTA 2 Max's 1,741Wh. Paying the difference buys no better rate on energy; it buys the one thing a per-kilowatt-hour rate cannot give you, which is having the energy on the night the grid takes it away.
DELTA 2 Max: $1,049, 2,048Wh, rated 3,000 cyclesPower 1000: $699 (last listed price), 1,024Wh, rated 4,000 cyclesRated lifetime energy: 6,144 kWh against 4,096 kWh
Why it mattersIf outages are why you are shopping, stop comparing the two prices, because neither is overpriced. Compare the two usable-capacity figures against your own load list.
Capacity
That speed is also the thing people complain about, because the fans are loud under heavy load or charging and the Quiet Charging mode buys quiet by stretching the charge back outA1. In a rolling outage you refill inside whatever window the grid or the generator hands you, and the DELTA 2 Max is built to use a short window loudly. The Power 1000 stays quiet through a full-speed chargeB3 and simply has less to put back.
DELTA 2 Max: 0 to 80% in about 50 minutes, full in about 80A2Power 1000: 80% in about 50 minutes, full in about 70B3Capacities of 2,048Wh and 1,024Wh
Why it mattersAnyone refilling from a generator or a brief restoration window wants the fast, loud one; anyone charging overnight in a small room should know what they are agreeing to.
solar input
On the input spec the gap is small, 1,000W against 800W. In the field it is a part number: one unit takes panels directly, the other needs DJI's adapter in the bag before it can take any at all. Being able to top up with panels you already own is worth more on day two of a trip than 200W of headroom.
DELTA 2 Max accepts 1,000W of solar, Power 1000 accepts 800WDJI's stations have no built-in solar charge controller and take panels through a separate proprietary adapterWeekend Camping needs 2,100Wh, more than either unit holds
Why it mattersSolar-first campers should price that adapter in before calling the Power 1000 the cheap option.
And the night a bedside station is both running a CPAP and recharging is precisely where the DELTA 2 Max's complaint livesA1, while the Power 1000 does that combination quietlyB1B3. Once capacity stops mattering, the deciding spec is the one you can hear at 3 a.m., and it points away from our pick.
CPAP Overnight needs 320Wh against the Power 1000's 870Wh usableThe DELTA 2 Max's noise complaint is specifically about heavy load and chargingA1The Power 1000 is described as near-silent under normal load and barely audible during a full-speed chargeB1B3
Why it mattersIf a CPAP is most of the reason you are buying, the bigger battery is solving a problem you do not have.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: The two loads that decide this pair, an 8-hour blackout at 1,645Wh and a workday at 910Wh, both land between the Power 1000's 870Wh usable and the DELTA 2 Max's 1,741Wh.
continuous output
Capacity only means something in the shape of your load list, and this pair splits that list cleanly into three bands. Under 870Wh usable, everything either unit does is identical and you are shopping for the lighter one. Between 870Wh and 1,741Wh only one of them finishes, and that band holds the workday at 910Wh and the blackout at 1,645Wh, which is to say most of the reasons anyone buys a station this size. Above 1,741Wh neither is enough: the weekend list wants 2,100Wh and the van-life day wants 4,685Wh, and choosing between these two does not solve either.
Two columns that look decisive are not. Both inverters promise a transfer no worse than 20ms, so neither is the better UPS, and both start the tailgate profile's 400W peak without argument. The Power 1000's 140W USB-C port does out-charge the DELTA 2 Max's 100W, which is worth something if a big laptop is the main thing you plug in and nothing at all otherwise.
Lifetime Value
Selected because: Cost per lifetime kilowatt-hour comes out level between them, which turns the gap between $1,049 and $699 (last listed price) into a sizing decision rather than a value one.
Every per-dollar column favours the Power 1000 and none of them mean what they look like. It is rated for 4,000 cycles against 3,000, and at daily use that reads as 11 years of service against 8.2. Then remember what a cycle is: 1,024Wh on one unit and 2,048Wh on the other, so across the rated life it delivers 4,096 kWh against 6,144. The rate you pay per kilowatt-hour ends up the same either way. You are not choosing between a good deal and a bad one, you are choosing how much you want.
The warranty column runs the same trick. Both carry five years, so the cover is identical, and splitting purchase price across it gives $140 a year against $210, which is the price gap wearing a warranty costume. The number that does separate them is the energy you never use: the extra money buys 1,024Wh, and if your list never reaches past 870Wh usable, that is the whole of what you overspent on.
Your Life, Your Pick
Selected because: The DELTA 2 Max takes three rows, the Power 1000 takes the CPAP night, and two go to neither unit; the shape of that scoreboard is the argument.
Three rows to the DELTA 2 Max, one to the Power 1000, two to neither, and the last three are the interesting ones. The Power 1000's workday miss is 40Wh, a rounding error produced by the flat 15% usable allowance rather than by the battery. Its CPAP win is genuine, and it wins on what matters beside a bed rather than on capacity. And the two rows nobody takes, the 2,100Wh weekend and the 4,685Wh van-life day, are the honest boundary of this whole comparison.
Read the scoreboard as a range rather than a score. These units agree completely about small loads and disagree only in the band between them, which is why a buyer with a short list can ignore every row the DELTA 2 Max wins, and a buyer planning for the grid should ignore how close the workday row was.
Portability & Form Factor
Selected because: 50.7 lbs against 28.7 is the one column where our pick loses outright, and for campsite and tailgate use it can outweigh everything above it.
weight
Twenty-two pounds is the difference between carrying a station and moving one. 28.7 lbs comes out of a trunk in one hand; 50.7 lbs is a two-hands, bent-knees lift that you notice again at the top of basement stairs, and it is the single column where our pick loses cleanly. If the unit's job is to sit in a utility room waiting for the grid to fail, that never bites. If its job is to ride to a campsite and a tailgate most weekends, it bites every time.
Game day is the clean illustration. The DELTA 2 Max takes that row on paper by keeping more in reserve, and yet the only thing anyone will remember about the afternoon is which box they carried across the parking lot.
Brand Trust
Selected because: EcoFlow brings the deepest range and a split support record; DJI brings a real global repair network and barely two years of power-station history.
Neither brand is a reason to buy, and both are worth reading before you do. EcoFlow has the deepest range in the category and the largest community, which pays off mostly on the night you are searching a symptom late and alone, but its support record is genuinely split between prepaid-label replacements that just work and long waits that end in a refurbished unit against a new claim, and out of warranty it offers no parts or service at all. DJI arrives with a global repair network inherited from the drone business and very little power-station history inside it.
Two practical consequences. Buy either unit somewhere with a real return window, which is the cheapest insurance against whichever support experience you draw. And on the DJI side, check which revision a listing actually ships, because the line contains both a Power 1000 and a Power 1000 V2, and the price you are comparing may not be for the unit on this page.
Strengths & trade-offs
EcoFlow DELTA 2 Max
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Significantly heavier (+22 lbs), making it harder to move.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Power 1000's 4,000, so it wears out sooner.
DJI Power 1000
Strengths
- +Lighter by 22 lb
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –No major technical downsides compared to rival.
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 finishes the 2,100Wh a full weekend list asks for. The DELTA 2 Max covers about 83% of it, the Power 1000 about 41%, so this is not a win for either one; it is a question of how much triage you are signing up for. Panels change the answer, and both are built for them: 1,000W of solar input on one, 800W on the other, and a good day of sun is the only way either box reaches a second night intact.
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
DELTA 2 Max
Only one of these reaches morning. The profile wants 1,645Wh, and the Power 1000 has 870Wh usable, so it runs about four of the eight hours and stops. The DELTA 2 Max makes it with 96Wh left, roughly 5% of its usable capacity, so call this finished rather than comfortable: it lands on the far side of the outage nearly empty, which is fine if the lights come back and a problem if they do not.
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 40W CPAP for eight hours is 320Wh, so both of these clear the night with room for a phone and a lamp. Capacity is a formality here, which throws the decision onto what you actually notice beside a bed: the Power 1000 weighs 28.7 lbs against 50.7 and lists at $699 (last listed price) against $1,049, and it is the one you can move to a guest room or a hotel without planning the lift. Do not settle this on the decibel column, because the two makers publish that figure by different methods and the numbers are not comparable.
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
DELTA 2 Max
The Power 1000 misses this by 40Wh, which is less a battery problem than an accounting one: its 1,024Wh nameplate clears a 910Wh day, and the flat 15% usable allowance pulls it to 870 and under the line. Unplug one thing and it finishes. The DELTA 2 Max does not ask you to, ending the day with 831Wh still in the tank, which is the next morning already paid for.
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 Max
Both cover game day comfortably, 670Wh against 1,741Wh and 870Wh usable, and the 400W peak never troubles either inverter. The DELTA 2 Max takes the row by keeping more in reserve. But the number you feel in a parking lot is 22 pounds, 28.7 lbs in one hand against 50.7 in two, so if tailgating is the whole reason you are shopping, winning this row is worth less than the walk from the car.
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 Max comes up 2,944Wh short (about 37% covered), the Power 1000 3,815Wh (19%). 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 Max runs 8.5h vs 4.2h.
$1,049 list · direct from EcoFlow
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 13, 2026
Verdict: the DELTA 2 Max, on Power Score margin
Buy the DELTA 2 Max if the reason you are shopping is the grid. It holds 2,048Wh against 1,024Wh, and after the flat 15% usable allowance that leaves 1,741Wh in one box and 870Wh in the other. That line is where the two loads that matter fall: the 8-hour blackout profile at 1,645Wh and the remote workday at 910Wh. The Power 1000 misses the first by 775Wh and the second by 40Wh. It is also the nicer object, at 28.7 lbs against 50.7, rated for 4,000 cycles, and reported near-silent even at a full-speed chargeB1B3, and those are real enough to keep this call firm rather than emphatic. But cost per lifetime kilowatt-hour comes out identical, so the price gap is not a premium you are paying, it is a bigger tank bought at the same rate. Take the small one only if you know your list fits inside 1,024Wh, and if it does, look at the Power 1000 V2 first.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of September 13, 2026. The links below open EcoFlow's current price.
$1,049.00 · direct from EcoFlow
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 13, 2026
Black Friday · 38 days out
Price to beat:DELTA 2 Max $949
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): Camping.
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews — see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, DELTA 2 Max rates 3.8/5 (32nd percentile of 26 Large-class units), and Power 1000 rates 4.3/5 (58th percentile of 27 Everyday-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.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The Power 1000's figure is a maximum rather than a guarantee — it depends on buying from DJI's own store, which is where the full five years is advertised.
4,000 cycles, half the size
The Power 1000 is rated for more cycles than the DELTA 2 Max, 4,000 against 3,000, and at daily use that reads as 11 years against 8.2. Then remember what a cycle holds: 1,024Wh on one and 2,048Wh on the other, so the rated life adds up to 4,096 kWh against 6,144. At weekend pace the ratings run to 38 years and 29, which is a long way of saying neither of these will die on you; they will be quietly outclassed by whatever ships in year six instead. And the cycle limit is not a cliff. It is the point where the pack settles around 80% of the capacity it began with.
Full record above — the Test Desk pick is the DELTA 2 Max.
Check DELTA 2 Max 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 Power 1000 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 DELTA 2 Max works out at $0.17/kWh over its rated life. If you already own the Power 1000, the hardware comparison still holds: over its rated life the DELTA 2 Max delivers about 6,144 kWh and the Power 1000 about 4,096 kWh. One caution on the lifespan row: the Power 1000 takes longer to reach its cycle rating, but a cycle moves a different amount of energy on each unit — the DELTA 2 Max 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 phone, email and chat, and a genuinely split record behind it: plenty of hassle-free prepaid-label replacements, and plenty of long waits that end in a refurbished unit against a new claim. Buying through a retailer like Costco or Amazon gives you a return window that does not depend on which of those you draw.
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
Nobody else has this much range. Twelve to fifteen models across the DELTA Pro, DELTA 3 and RIVER 3 lines, plus panels and smart home panels, and the fastest charging in the category. At the very top the DELTA Pro Ultra platform stacks batteries and inverters into whole-home backup, though that is a flagship path rather than something the whole line does.
Worth knowing
Out of warranty there is no parts or service path, so year six is yours to solve. EcoFlow also trialed a subscription paywall for advanced app features in early 2025 and paused it after the community pushed back, which is worth remembering about a unit whose conveniences live in an app.
DJI
Ecosystem
Five power stations since DJI entered the category in 2024, and two of them are called Power 1000: the original and the V2. Check which revision a listing actually ships before you compare prices.
Support
The global repair network is inherited from the drone business and is a real asset. The power-station track record inside it is short.
Community
There is no power-station community to speak of yet. Questions land in the main DJI subreddit among a quarter of a million drone users, which is a lot of people and very few of them running one of these through a blackout.
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
No built-in solar charge controller: panels connect through a separate DJI adapter, so budget for it. The SDC ports are proprietary, which makes their fast-charging trick a genuine perk if you already own DJI batteries and irrelevant if you do not. Battery expansion arrived on the V2 and the Power 2000, not on this unit.
Analyst note
EcoFlow's advantage is depth: the widest model range and the biggest community in the category, which mostly pays off the night you need to search a symptom and find somebody who has already had your problem. DJI's advantage is hardware pedigree and a repair network that already exists, and its disadvantage is that almost nobody has owned one of these long enough to tell you how it ages. Neither app should decide this for you.
Growth path
DELTA 2 Max
EXPANDABLESupports EcoFlow 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 1,000W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
Power 1000
EXPANDABLESupports DJI 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 800W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are 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 Power 1000 is no longer sold (DJI points owners to the Power 1000 V2). That leaves the DELTA 2 Max: it starts at 2,048Wh and takes EcoFlow expansion batteries, so the ceiling moves if your needs do. The Power 1000's expandability still matters if you already own one, but it isn't a reason to pick it over the DELTA 2 Max.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 2 Max
The complaint that follows this unit around is the fans: around 52 dB under heavy load or while charging, with a Quiet Charging mode that trades the noise back for a longer charge, and better behaviour if you leave it six inches of clearance to breatheA1. None of that is a defect. It is the cost of charging this fast in a box this size, and it is worth knowing before the unit moves into a bedroom.
The praise is durability and speed. LiFePO4 rated 3,000+ cycles to 80% with strong thermal stability, and after six months of real use no structural degradation and the same day-one solidityA3, with 0 to 80% from the wall in about 50 minutesA2. Reviewers land on worth buying with caveats, mostly for the expandability and the ecosystem around itA4.
“Fast AC wall charging — 0 to 80% in about 50 minutes and a full charge in roughly 80 minutes.”
Sources
powerstationadvisor.com · pcworld.com · thesolarlab.com · protoolsadvisor.com · trailandkale.com
DJI Power 1000
Field coverage is unusually consistent on one point: it is quietB1B3. Near-silent under normal loads, with sound only appearing past 1,500W and even then as a soft whoosh rather than a whirB1, and the fan barely audible during a full-speed wall chargeB3. That is the strongest thing anyone says about it, and it is why it turns up beside beds and in vans.
On output it tested above its own rating, holding 2,400W for 20 minutes with no shutdown and no noise spikeB2, and a week of camping ran a 45W compressor fridge alongside phones, laptops and lightsB4. The caveat is the shape of the evidence rather than its direction: this is review coverage of a product line only a couple of years old, not years of owner historyB0.
“Whisper-quiet operation — one of the quietest power stations in its class, nearly silent under normal loads; sound only becomes noticeable past 1,500W, and even then it's a soft whoosh rather than the high-pitched whirring you'd get from BLUETTI or EcoFlow.”
Sources
thesolarlab.com · trailandkale.com · offgridbenchmark.com · superfashion.us · 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
- Solid LFP durability, fast charging, and ecosystem/expandability are the praise; loud fans under heavy load or charging are the recurring complaint. [DELTA 2 Max · 3 entries]
- Standout quiet operation (quieter than EcoFlow/BLUETTI), robust real-world output above its rating, and appeal to drone pilots and campers are the consistent themes. [Power 1000 · 3 entries]
- A1
“Fan noise is a significant issue — cooling fans can get loud, around 52 dB during heavy loads or charging; a Quiet Charging mode reduces noise but extends charge time, and giving it 6 inches of clearance helps airflow.”
powerstationadvisor.com / pcworld.com — DELTA 2 Max review · 2025-2026 · [negative]
- A2
“Fast AC wall charging — 0 to 80% in about 50 minutes and a full charge in roughly 80 minutes.”
thesolarlab.com / protoolsadvisor.com — DELTA 2 Max review · 2025-2026 · [positive]
- A3
“LiFePO4 chemistry rated for 3,000+ cycles to 80% with superior thermal stability; after 6 months of real use there was no structural degradation and it felt as solid as day one.”
powerstationadvisor.com / trailandkale.com — DELTA 2 Max review · 2025-2026 · [positive]
- A4
“Reviewers say it's still worth buying but with caveats — a versatile unit with expandability and ecosystem compatibility.”
thesolarlab.com / powerstationadvisor.com — DELTA 2 Max review · 2025-2026 · [mixed]
- B1
“Whisper-quiet operation — one of the quietest power stations in its class, nearly silent under normal loads; sound only becomes noticeable past 1,500W, and even then it's a soft whoosh rather than the high-pitched whirring you'd get from BLUETTI or EcoFlow.”
thesolarlab.com / trailandkale.com — DJI Power 1000 review · 2026 · [positive]
- B2
“Tested at 2,400W — slightly above its 2,200W output rating — for 20 minutes and handled it without loud noise or automatic shut-offs.”
offgridbenchmark.com / superfashion.us — DJI Power 1000 review · 2026 · [positive]
- B3
“AC charging takes about 70 minutes from 0% to 100% (about 50 minutes to 80%), and during full-speed charging the fan barely makes a sound.”
thesolarlab.com — DJI Power 1000 review · 2026 · [positive]
- B4
“Over a week-long camping trip it powered a 45W compressor fridge, phones, laptops, and LED lights; it's also a favorite of drone pilots for fast-charging DJI batteries while running other devices.”
offgridbenchmark.com / dronexl.co — DJI Power 1000 review · 2026 · [positive]
Research compiled September 13, 2026.
What Owners Actually Report
Drawn from 186 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 Max
74 claims from 55 comments · 60 from owners · 20 with figures
- Runtime
- 13 · 0% negative
- Solar input
- 10 · 20% negative
- Price & value
- 11 · 45% negative
- Expandability
- 8 · 15% negative
- Noise
- 5 · 58% negative
What owners complain about
Its own MPPT is limited to a mere 60 VOC from solar panels.
Solar inputmeasuredowner19 agreedsource →
Delta 2 Max is promised at 30 dB but measured 42 dB in his hands.
Noisemeasuredowner5 agreedsource →
Got a 5kWh rival for less than he paid for a DELTA 2 Max with extra battery.
Price & valueowner17 agreedsource →
What owners praise
Feeding his lead-acid UPS from it stretches desktop runtime from 8 minutes to 4 hours.
Runtimemeasuredowner8 agreedsource →
Bought the Delta 2 Max for $899 on Black Friday; the Delta 2 was $399.
Price & valuemeasuredowner21 agreedsource →
Takes 500-1000W from a DIY 48V bank over XT60i, far cheaper than the official spare battery.
Expandabilitymeasuredowner19 agreedsource →
DJI Power 1000
200 claims from 131 comments · 98 from owners · 31 with figures
- Price & value
- 33 · 11% negative
- Charging
- 22 · 20% negative
- Solar input
- 28 · 52% negative
- App & firmware
- 27 · 79% negative
- Other
- 20 · 53% negative
What owners complain about
Bought and tested it: 140W is out of the USB-C port's league.
Chargingmeasuredowner9 agreedsource →
The 400W MPPT modules run hot and throttle solar watts until he added copper heatsinks.
Build qualitymeasuredowner5 agreedsource →
Says the inverter draws about 50W, which DJI never mentions but which decides real autonomy.
Idle drainmeasuredowner1 agreedsource →
What owners praise
Ordered one on Amazon for under $400 in a November deal.
Price & valuemeasuredowner11 agreedsource →
SDC ports charge Mavic 3 batteries about 50% faster than the 120V fast charger; USB-C rated 140W.
Chargingmeasuredowner5 agreedsource →
Confirms DJI's quietness claim while charging is not exaggerated.
Noiseowner38 agreedsource →
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 Max if you…
- →You are buying because the power goes out. The 8-hour profile at 1,645Wh is the reason this unit is in your house, and it is the only one of the two that reaches the end of it.
- →Your load list sits in the band between 870Wh and 1,741Wh usable: a workday of screens, a fridge and some lights through an evening, a CPAP plus whatever else you did not plan for.
- →You want the option to grow. It takes EcoFlow expansion batteries, so 2,048Wh is a starting point rather than a ceiling, and at that size the path genuinely points toward partial-home backup.
- →You refill on short notice. About 80 minutes from the wall for the full 2,048WhA2 means a generator hour or a brief restoration window actually gets you somewhere.
Buy the Power 1000 if you…
- →Your list is short and you carry it: 28.7 lbs to the campsite, the tailgate, the second floor. Under about 870Wh usable, the bigger unit's advantage never shows up.
- →A CPAP is most of the reason. 320Wh a night against 870Wh usable is not close, and the spec that decides a bedside unit is the one you can hearB1B3.
- →You already own DJI gear. The SDC ports fast-charge DJI drone batteries, which is a real advantage if your bag is already full of them and worth nothing if it is not.
- →Either way, start with the Power 1000 V2, DJI's current version of this unit. The base Power 1000 is the right buy only when it is discounted enough to make the older revision the cheaper way into the same 1,024Wh.
If neither fits
If your day looks like the van-life profile at 4,685Wh, or you want a weekend's full 2,100Wh list covered without carrying panels, close both tabs and shop the next size class up. Stacking two units to cover one load is how people end up with a station they resent and a spare they never use.
The Bottom Line
Take the DELTA 2 Max. Both units charge the same rate per lifetime kilowatt-hour, so the price gap is not a premium, it is a bigger tank bought at the same rate, and the band it buys you between 870Wh and 1,741Wh usable is exactly where the blackout and the workday sit. The Power 1000 misses the first by 775Wh and the second by 40Wh, and only one of those misses is forgivable.
If the small box is genuinely the right answer for you, buy it properly: the Power 1000 V2 is DJI's current version of this unit, and the base Power 1000 makes sense only at a discount big enough to be the cheaper way into 1,024Wh. What you should not do is buy the bigger station for a list that fits in the smaller one, then carry 50.7 lbs to the campsite to prove the point.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 2 Max worth $350 more (on last listed prices) than the DJI Power 1000?
If your loads reach past 870Wh usable, yes, though not because it is better value. Cost per kilowatt-hour across the rated life is a tie, so the $350 between $1,049 and $699 (last listed price) buys 1,024Wh more battery at the same rate rather than a discount or a premium. If your list stays under that line, you are paying for energy you will not use.
Will the DJI Power 1000 get me through an 8-hour power cut?
Not the way we model one. Our 8-hour blackout profile needs 1,645Wh and the Power 1000 has 870Wh usable, so it covers about four of the eight hours; the DELTA 2 Max finishes with 96Wh left. If your own outage list is smaller than ours, check it against 870Wh before assuming the gap matters to you.
Should I buy the DJI Power 1000 or the Power 1000 V2?
The V2 is DJI's current version, so make that the default and treat the base Power 1000 as a discount play. One concrete difference: battery expansion exists on the V2 and the Power 2000 but not on this unit, which is sealed at 1,024Wh. If the two are priced close together there is no argument for the older one.
Which of these is quieter?
Field reports point at the Power 1000, described as near-silent under normal load and barely audible even while charging at full speed, while the DELTA 2 Max's fans are its recurring complaint at around 52 dB under heavy load or charging. Do not settle it from the spec sheet: makers publish noise figures differently, some quoting a best case and some a figure under load, so those numbers are not measuring the same thing.
Which battery lasts longer?
The Power 1000 is rated for more charge cycles, 4,000 against 3,000, which reads as 11 years of daily cycling against 8.2. But a cycle moves half as much energy, so the DELTA 2 Max delivers more across its rated life: 6,144 kWh against 4,096. At weekend use both ratings run into the decades, and at the end of them the pack does not stop, it settles around 80% of the capacity it started with.
Brand matchup
EcoFlow vs DJI: measured across every matchup →Where to buy
EcoFlow DELTA 2 MaxPick
$1,049.00
$1,049.00 · direct from EcoFlow
Last checked 16 days ago. Prices move — check before you buy.
DJI Power 1000
Superseded — buy the V2
Prices may vary by retailer and are subject to change.