Head-to-head test
EcoFlow DELTA 3 1000 Air vs EcoFlow RIVER 3 PLUS
The bigger battery here is the one EcoFlow no longer sells, so the question isn't which unit is better — it's whether your whole load list fits inside 286Wh, because that's the box you can still order new.
Full profiles: EcoFlow RIVER 3 PLUS →
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
EcoFlow
DELTA 3 1000 Air
2,933Power Score · Appliance Class
No longer sold
EcoFlow has discontinued the DELTA 3 1000 Air — it has left EcoFlow's own store and our price tracking, though remaining retailer stock may linger. Our recommended replacement is the EcoFlow DELTA 3 Classic: the same 1kWh class, with an 1,800W inverter to the Air's 500W.
DELTA 3 Classic · $559.00
$299.00 · direct from EcoFlow
Last checked 1 day ago. Prices move — check before you buy.
Spec deltas
EcoFlow doesn't sell the DELTA 3 1000 Air anymoreA0A4. Anything you turn up now is leftover retailer stock, and that matters because the Air is the bigger machine here by more than three to one: 960Wh against the RIVER 3 PLUS's 286Wh. The unit you can still order new is the small one.
The odd part is that the big battery has the smaller faucet. The Air pushes 500W continuous and peaks at 1,000W; the RIVER 3 PLUS pushes 600W and peaks at 1,200W. So the Air is a lot of energy for patient, low-wattage loads, and reviewers are blunt that 500W rules out a space heater or a hair dryerA3.
That leaves a size question with an availability thumb on the scale. The Air's 960Wh of slow, quiet energy is a real case, attached to a two-year warranty and a $309 list price on a box that isn't in production. The RIVER 3 PLUS asks $259 for 286Wh, of which 243Wh is usable after the flat 15% allowance we apply to every unit on the site, and backs it for five years. Learn that 243Wh figure before you buy, because it decides everything below.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Expandability on this page isn't a growth path past the Air. It's a slower, costlier route to a smaller number: buy the base unit, buy a second box, land under the capacity the Air had sealed in from the factory. The feature earns its name against other small stations, not against this one.
RIVER 3 PLUS expands to 572Wh with the EB300 or 858Wh with the EB600B1DELTA 3 1000 Air is sealed at 960Wh with no expansionRIVER 3 PLUS is $259 for the base unit; expansion batteries are a separate purchase
Why it mattersIf you're leaning RIVER 3 PLUS because it can grow later, price 286Wh as the number you are actually buying — and if you need more than 960Wh, neither box gets you there.
continuous output
That splits them by load shape rather than size. Heating elements and compressors are out on the Air at 500W. The RIVER 3 PLUS will start more of them at 1,200W but has only 243Wh usable to feed them, so run it flat out at 600W and it's empty in about 25 minutes. One unit is a long thin trickle; the other is a short fat burst.
DELTA 3 1000 Air: 960Wh, 500W continuous, 1,000W peakRIVER 3 PLUS: 286Wh, 600W continuous, 1,200W peak500W won't run a space heater or a hair dryerA3RIVER 3 PLUS can briefly handle a coffee maker or microwave on X-BoostB3
Why it mattersAnyone with a single high-wattage appliance on the list should shop the kilowatt-hour class instead — neither of these runs a kettle long enough to matter.
At a desk that never bites: the laptop's own brick goes into the AC outlet, and both units quote the same 10ms switchover ceiling, so neither lets the machine blink. Away from the desk it bites hard. In a tent or a van with no wall brick in the bag, 18W means the laptop charges slower than it drains. 100W means it doesn't.
DELTA 3 1000 Air's fastest USB-C port: 18WRIVER 3 PLUS's fastest USB-C port: 100WThe Air was built as a desk power-protection device with a 10ms UPS switchover ceilingA2
Why it mattersIf you charge a laptop over USB-C and nothing else, the RIVER 3 PLUS wins outright regardless of what the capacity column says.
cost / lifetime kWh
The trouble is which box each number lives in. The cheap energy is locked inside a discontinued unit with two years of coverage, $155 per warranty year against the RIVER 3 PLUS's $52. Find Air stock marked down and the math is excellent. Pay $309 list and you've paid full price for a model the maker has stopped shipping, then taken less than half the coverage of the cheaper box.
DELTA 3 1000 Air: $309, 960Wh, 3,000 cycles — 2,880 kWh over the pack's life, $0.11 per lifetime kWhRIVER 3 PLUS: $259, 286Wh, 3,000 cycles — 858 kWh, $0.30 per lifetime kWhWarranty: 2 years on the Air, 5 years on the RIVER 3 PLUSEcoFlow no longer sells the AirA0A4
Why it mattersHunt for a discounted Air if lifetime energy cost is why you're here; at list price the RIVER 3 PLUS is the better trade, or the DELTA 3 Classic if you need the capacity.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: Four of the seven load profiles here are losses for both units, so the first job is checking whether your night is one of the three either box can actually finish.
Four of the seven rows are losses for both boxes, and that's the most useful thing this table says. Van life at 4,685Wh and a camping weekend at 2,100Wh aren't close for either unit, and the eight-hour blackout gets about half covered by the Air and about 15% by the RIVER 3 PLUS. If one of those rows is why you're shopping, the answer is a bigger station and this page is a detour.
Of the rows that do resolve, the Air takes both: the CPAP night with 496Wh still unspent, the tailgate with 146Wh. The workday is the near-miss worth understanding, since its 960Wh nameplate clears the 910Wh asked for and the flat 15% conversion allowance is what tips it 94Wh under. The only row the RIVER 3 PLUS is comfortable in is the 100Wh afternoon, where it finishes at 41% used and the Air's extra capacity is weight you carried for nothing. Pick by which row is actually your Saturday.
Growth Path
Selected because: The RIVER 3 PLUS's expansion tops out at 858Wh, below the DELTA 3 1000 Air's fixed 960Wh — the one fact on this page most likely to change your mind.
solar input
"Expandable" is doing less work here than it looks. The RIVER 3 PLUS takes EcoFlow expansion batteries and reaches 572Wh with the smaller one, 858Wh with the largerB1. The Air sits at 960Wh out of the box, sealed. You can spend twice and still not arrive where the other unit started.
That inverts the usual reading of this section. Fixed capacity is normally the drawback, and on this pairing it's the Air's advantage, because the number it's fixed at is higher than anything the flexible unit can climb to. Expandability only counts when the expanded figure beats the rival's. Grow past 960Wh and you've outgrown both of these.
Portability & Form Factor
Selected because: 10.4 lbs against 22 lbs is the RIVER 3 PLUS's real argument, and the only axis where extra capacity counts against you.
weight
22 lbs against 10.4 lbs is the difference between a two-hand lift into a trunk and something that goes over a shoulder with the laptop bag. Neither unit is floor-bound, and both are built to travel. Only one of them travels casually.
The 100Wh afternoon is the RIVER 3 PLUS's whole case in a line: phones and a speaker for a few hours, 41% used, 10.4 lbs in the bag. The Air would do that job without noticing, and you'd have hauled 960Wh to spend 100 of it. Capacity you never touch isn't headroom, it's luggage.
Lifetime Value
Selected because: The Air delivers energy at roughly a third the cost per lifetime kilowatt-hour while its warranty runs less than half as long, so both columns need reading together.
cost / lifetime kWh
Eleven cents a kilowatt-hour against thirty. Both packs are rated for the same 3,000 cyclesB4, so that spread is nothing but capacity per dollar: $309 buys 960Wh and 2,880 kWh across the pack's life, $259 buys 286Wh and 858 kWh. Read it once and you have it — the Air is the cheaper energy, and it isn't close.
Then read the warranty column, which runs the other way: five years on the RIVER 3 PLUS against two on the Air, $52 a covered year against $155. One of these is cheap energy inside a box EcoFlow has stopped selling; the other is a small box with a long promise attached. If you find Air stock marked down, the first column is what you're buying. At list price, the second one is.
What the Specs Don't Tell You
Selected because: Two of the three flags point at the DELTA 3 1000 Air, and only one of them, the 18W USB-C port, changes a purchase.
Two of the three flags land on the Air, and only one should move you. Fixed capacity reads as a weakness right up until you check where the RIVER 3 PLUS's ceiling stops, and the two-year warranty against five matters most to whoever keeps a station longest. The 18W USB-C port is the one with teeth: a phone port on a unit sold to keep a desk running, against 100W on the other side.
The honest counterweight is that the Air answers it with AC. Its 500W inverter and 10ms switchover ceiling mean a laptop on its own brick rides through an outage untouched, and since both units quote the same 10ms ceiling, that spec isn't a tiebreak either way. USB-C only decides this for the person who left the brick at home.
Strengths & trade-offs
EcoFlow DELTA 3 1000 Air
Strengths
- +Larger battery capacity
- +Faster solar charging
Trade-offs
- –Significantly heavier (+11.6 lbs), making it harder to move.
EcoFlow RIVER 3 PLUS
Strengths
- +Costs $50 less
- +Lighter by 11.6 lb
- +Higher AC output
- +Longer warranty
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 seven 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 3 1000 Air comes up 1,284Wh short (about 39% covered), the RIVER 3 PLUS 1,857Wh (12%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
Battery budget usedlower = more headroom
LOAD 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
1,645Wh is where both of these stop being backup units. The Air covers about half of it, the RIVER 3 PLUS about 15%, and nothing in the row is hard to start — the peak is only 150W, so this is purely a question of how much energy is on hand. If keeping the house going is why you're shopping, this row is telling you to size up, not to choose.
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
DELTA 3 1000 Air
The Air finishes this night with 496Wh still in the tank, 816Wh usable against the 320Wh a CPAP draws while you sleep. The RIVER 3 PLUS gets about three-quarters of the way and quits, 243Wh usable against a 77Wh shortfall. Both units advertise quiet-mode noise floors and this is the one load light enough for those floors to mean anything, but the unit that reaches morning wins the row regardless.
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
This is the row the Air nearly wins. Its 960Wh nameplate clears the 910Wh a full workday asks for, and the flat 15% conversion allowance every unit here gets is what pushes it 94Wh under, so call it a near-full day with the last stretch in doubt. The RIVER 3 PLUS covers about a quarter of it, which is a lunch break rather than a shift.
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 3 1000 Air
670Wh across an afternoon with a 400W peak, and the Air has both the energy and just enough faucet: 816Wh usable, 146Wh left at the end, and 100W of headroom over that peak on a 500W inverter. Run the big draw alone rather than alongside something else. The RIVER 3 PLUS has the bigger inverter and the smaller tank — it would push 400W happily and then stop 427Wh early.
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 3 1000 Air comes up 3,869Wh short (about 17% covered), the RIVER 3 PLUS 4,442Wh (5%). 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
SCN-07 · an afternoon · needs 100Wh
Afternoon Off-Grid
Phones and a speaker at the park, beach, or campsite — the small-unit job description
Either unit
This row is here for the RIVER 3 PLUS's class of job: phones and a speaker, 100Wh across an afternoon. Both cover it — the RIVER 3 PLUS finishes at 41% used, and the DELTA 3 1000 Air barely notices it. For this job the DELTA 3 1000 Air's extra capacity is dead weight, not headroom; take the RIVER 3 PLUS at 10.4 lbs and leave the rest at home.
Battery budget usedlower = more headroom
LOAD Phone Charger (×2) 30W×2h · Bluetooth Speaker 10W×4h
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 3 1000 Air runs 4h vs 1.2h.
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 0–54.4hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–10.9hHigh-Draw Appliances
These reveal the real limits¹ 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 RIVER 3 PLUS
Take the RIVER 3 PLUS, with your eyes open about what it is: 286Wh for $259, and the only one of the two EcoFlow still sells and still warrants, five years against the Air's twoA0A4. It wins on availability and support, not on energy. The Air holds 960Wh to the RIVER 3 PLUS's 286Wh, delivers it at roughly a third the cost per lifetime kilowatt-hour, and is the only one of the two that finishes a CPAP night or a tailgate. So if that capacity is what you came for, don't buy either one: the DELTA 3 Classic is the same kilowatt-hour class with an 1,800W inverter where the Air had 500WA4. The RIVER 3 PLUS is the right answer when your list is phones, a speaker, a camera battery and a laptop charged over USB-C.
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.
$299.00 · direct from EcoFlow
Last checked 1 day ago. Prices move — check before you buy.
or check the DELTA 3 1000 Air price$309.00 list
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated September 13, 2026
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 3 1000 Air rates 5.0/5 (99th percentile of 20 Compact-class units), and RIVER 3 PLUS rates 5.0/5 (99th 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.
18W Is a Phone Port
The Air's quickest USB-C port tops out at 18W, which charges a phone and stalls a laptop; most USB-C laptops want 60W or more, and under load some won't charge at that rate at all. The Air's real answer is AC — put the laptop's own brick in the outlet and the 10ms switchover ceiling means it never notices an outage. The RIVER 3 PLUS simply does 100W over the port. If your laptop travels without its brick, that gap is the whole decision.
The Expansion Ends Below the Air's Starting Point
The Air being sealed at 960Wh reads like the weakness here, until you check where the RIVER 3 PLUS's expansion actually stops: 572Wh with one battery, 858Wh with the larger one. Both are under 960Wh. Expandability is real on the RIVER 3 PLUS and it is genuinely useful against other small stations, but against this one it's a two-box route to a smaller number. Grow past 960Wh and neither unit is the answer.
Five Years, on the Smaller Box
The RIVER 3 PLUS carries five years of coverage against the Air's two, which works out to about $52 per covered year against $155. The Air's two years are also two years on a model EcoFlow has stopped selling. Worth keeping in proportion, though: five years of coverage on 286Wh is still 286Wh.
Full record above — the Test Desk pick is the RIVER 3 PLUS.
Check RIVER 3 PLUS price →or check the DELTA 3 1000 Air 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 RIVER 3 PLUS is cheaper to buy, but the DELTA 3 1000 Air is cheaper to own. At $0.11/kWh over its lifetime vs $0.3/kWh, the DELTA 3 1000 Air's higher cycle life and capacity make each dollar go further over the years. One thing to know reading the table: both carry the same 3,000-cycle rating, so the lifetime rows are sticker price and capacity in disguise — the wear horizon is identical and decides nothing here.
Growth path
DELTA 3 1000 Air
FIXED CAPACITYFixed at 960Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
RIVER 3 PLUS
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 286Wh.
Accepts up to 200W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Don't read the RIVER 3 PLUS's expandability as a straight win here: it starts at 286Wh, below the DELTA 3 1000 Air's 960Wh, so a first expansion battery largely buys back capacity the DELTA 3 1000 Air already includes. It only pulls ahead if you'd grow past 960Wh — short of that, the DELTA 3 1000 Air's larger fixed capacity is the simpler value.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3 1000 Air
Field material on the Air is review-desk work rather than long-term owner history, so read it as first impressionsA1A2A3. The consistent account is a deliberately minimalist unit: 960Wh of LFP at 22 lbs, fewer ports and fewer features than the rest of the DELTA line, built around keeping a computer, monitor and router alive through an outage rather than around campingA1A2.
The recurring criticism is the spec itself. 500W of continuous output won't run a space heater or a hair dryer, and reviewers say so without hedgingA3. Our own research records the unit as discontinued, with the standard DELTA 3 as the closest thing EcoFlow still sellsA0A4. Nobody in this ledger reports a failure; the complaint is about what the box was scoped to do, not whether it does it.
“A 960Wh LiFePO4 unit with a 500W inverter (800W X-Boost) weighing only 22 lbs — a focused, minimalist design with fewer ports and features.”
Sources
thesolarlab.com · batteryskills.com · backuppowerhub.com · matanich.com
EcoFlow RIVER 3 PLUS
Praise for the RIVER 3 PLUS is consistent across reviews and clusters on three things: the expansion path to 572Wh or 858Wh, a genuine 600W inverter with 1,200W of boost, and how little it weighs at 10.4 lbsB1B3. One reviewer calls its sub-30dB operation quieter than a libraryB2, which is worth holding loosely — that figure is a quiet-mode floor, not a measurement under load.
The cells get credit too: LiFePO4 rated for 3,000 cycles, which reviewers translate to roughly a decade of everyday use before capacity falls to 80%B4. The Air's pack carries the same 3,000-cycle rating, so longevity isn't a reason to pick between them. And like the Air's, this is review-site material rather than years of owner reportsB0.
“286Wh base, expandable to 572Wh (EB300) or 858Wh (EB600), with a genuine 600W inverter (1,200W X-Boost) and 220W solar input — twice the inverter and solar of the base RIVER 3.”
Sources
ecoflow.com · bestgeneratorsolar.com · thepowerpick.com · storagereview.com · phonearena.com · greenreviewshub.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
- A focused home-office UPS unit — LFP, 10ms UPS, quiet and light — but low 500W output; now discontinued in favor of the DELTA 3. [DELTA 3 1000 Air · 3 entries]
- Expandable capacity, doubled inverter and solar over the base RIVER 3, remarkable sub-30dB quiet, and light weight are the praise. [RIVER 3 PLUS · 3 entries]
- A1
“A 960Wh LiFePO4 unit with a 500W inverter (800W X-Boost) weighing only 22 lbs — a focused, minimalist design with fewer ports and features.”
thesolarlab.com / batteryskills.com — DELTA 3 1000 Air review · 2026 · [mixed]
- A2
“Built as a power-protection device with a 10ms UPS switchover to keep a computer, monitor, and router running through outages.”
backuppowerhub.com — DELTA 3 1000 Air review · 2026 · [positive]
- A3
“With only 500W continuous output, it won't run a space heater or hair dryer — it's built for low-to-moderate draw devices.”
backuppowerhub.com / matanich.com — DELTA 3 1000 Air review · 2026 · [mixed]
- A4
“EcoFlow no longer sells the DELTA 3 1000 Air; the closest successor is the standard DELTA 3 (1,024Wh LFP, 1,800W output, ~$549).”
backuppowerhub.com — DELTA 3 line · 2026 · [mixed]
- B1
“286Wh base, expandable to 572Wh (EB300) or 858Wh (EB600), with a genuine 600W inverter (1,200W X-Boost) and 220W solar input — twice the inverter and solar of the base RIVER 3.”
ecoflow.com / bestgeneratorsolar.com — RIVER 3 Plus review · 2026 · [positive]
- B2
“Sub-30dB operation is genuinely remarkable — quieter than a library and than most refrigerators.”
thepowerpick.com — RIVER 3 Plus review · 2026 · [positive]
- B3
“Weighs about 10.4 lbs and is highly portable; a small-format station that grows with you, able to briefly run a coffee maker, microwave, or space heater.”
storagereview.com / phonearena.com — RIVER 3 Plus review · 2026 · [positive]
- B4
“LiFePO4 rated for 3,000 charge cycles — around 10 years of everyday use before capacity drops to 80%.”
greenreviewshub.com / bestgeneratorsolar.com — RIVER 3 Plus review · 2026 · [positive]
Research compiled September 13, 2026.
Who Should Buy Which
Buy the DELTA 3 1000 Air if you…
- →You've found leftover Air stock marked well under list and your load list is a desk: router, monitor, a laptop on its own brick, maybe a CPAP on the nightstand. 960Wh at 500W is precisely that job, and at a clearance price its energy math is the best thing on this page.
- →You already own one and came here to find out whether the RIVER 3 PLUS is an upgrade. It isn't. It's a third of your capacity with a better USB-C port. Keep the Air.
This is you — check the DELTA 3 1000 Air price
Buy the RIVER 3 PLUS if you…
- →Everything you plug in is small and you carry it yourself: phones, a camera battery, a speaker, a laptop charged over USB-C at 100W. 10.4 lbs goes in the same bag as the laptop, and five years of coverage outlasts the trip you bought it for.
- →You want a station that's still in production and still supported, cheap enough to become the second unit later. $259 for 243Wh usable is an honest little box, as long as you never needed 960Wh.
If neither fits
If your list looks like the blackout row at 1,645Wh, a camping weekend at 2,100Wh, or van life at 4,685Wh, both of these fail and no amount of expansion fixes it — shop the kilowatt-hour-and-up class. And if what you wanted was the Air's 960Wh for a desk, buy the EcoFlow DELTA 3 Classic instead: same kilowatt-hour class, with an 1,800W inverter where the Air had 500WA4. Nobody should pay $309 list for a model the maker has stopped selling.
The Bottom Line
Take the RIVER 3 PLUS, and take it for the right reason: it's the one EcoFlow still sells, still covers for five years, and still charges a laptop at 100WA4. It is not the better battery. The Air holds more than three times the energy, delivers it far cheaper across the pack's life, and is the only one of the two that finishes a CPAP night or a tailgate.
What settles it is where the RIVER 3 PLUS's growth path ends. Bolt on the larger expansion battery and you arrive at 858Wh, still short of the 960Wh the Air had sealed in from the factory, and now spread across two boxes. So if 286Wh genuinely covers your list, buy the RIVER 3 PLUS and stop thinking about it. If it doesn't, don't reach for a discontinued unit at list price to fix it. Buy the DELTA 3 Classic and get the capacity with an inverter to match.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 3 1000 Air discontinued?
Yes. EcoFlow no longer sells it, so anything you find now is remaining retailer stock. That doesn't make it a bad unit — a 960Wh LFP pack rated for 3,000 cycles is the same pack it always was — but the replacement in EcoFlow's own line is the DELTA 3 Classic, which keeps the kilowatt-hour class and trades the Air's 500W inverter for 1,800W. Buy the Air only at a discount that reflects what it is.
Can the RIVER 3 PLUS expand to match the DELTA 3 1000 Air?
No. Fully expanded it reaches 858Wh with the larger battery, or 572Wh with the smaller one, while the Air is a sealed 960Wh. Expansion closes most of the gap and never crosses it, and you're buying a second box to get that far. If 960Wh is the target, buy a unit that starts there.
Will either one run a CPAP all night?
The Air will, comfortably: 816Wh usable against the 320Wh a night on the machine takes, leaving 496Wh unspent. The RIVER 3 PLUS gets about three-quarters of the way and stops 77Wh short on its 243Wh usable. If overnight medical equipment is the reason you're shopping, capacity is not the line item to economize on.
Which one is quieter?
Both quote quiet-mode floors rather than measured figures — 30 dBA for the RIVER 3 PLUS, 39 for the Air — and reviewers single out how quiet the RIVER 3 PLUS is. Treat those as best cases at low load, since both get louder as you draw more. A 40W CPAP is the closest they come to that regime, and even there the thing that decides it is which unit reaches morning.
Can either one run a microwave or a space heater?
Not usefully. The Air's 500W continuous won't run either, and its 1,000W peak is a brief allowance rather than a cooking budget. The RIVER 3 PLUS can briefly handle appliances in that class on its 1,200W boost, but 243Wh of usable energy is gone in about 25 minutes at its full 600W. For heating elements you want a bigger inverter and a much bigger pack.
Where to buy
EcoFlow DELTA 3 1000 Air
$309.00
$309.00 · direct from EcoFlow
EcoFlow RIVER 3 PLUSPick
$299.00
$299.00 · direct from EcoFlow
Last checked 1 day ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.