Head-to-head test
EcoFlow DELTA 3 Ultra vs EcoFlow DELTA 3 Ultra Plus
On our spec record the DELTA 3 Ultra and Ultra Plus are the same 3,072Wh machine, and the base Ultra costs $300 less — but reviewers say the Plus adds real expansion headroom (up to 11kWh) our spec sheet doesn't show, so the call comes down to whether you're building a big system or buying a standalone 3kWh unit.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
EcoFlow
DELTA 3 Ultra
5,362Power Score · The AC & Fridge Zone
$1,299.00 list · direct from EcoFlow
EcoFlow
DELTA 3 Ultra Plus
5,220Power Score · The AC & Fridge Zone
$1,499.00 list · direct from EcoFlow
Spec deltas
On paper — our spec sheet, anyway — these two are the same EcoFlow: 3,072Wh, a 3,600W inverter with a 7,200W surge, 4,000 cycles, a 10ms UPS, a quiet 30dB, 77.2 lbs. The base DELTA 3 Ultra is $1,199; the Ultra Plus is $1,499.
So the first-order answer is easy: if the two are identical, the base Ultra is the same machine for $300 less, and cheaper to own at $0.10 per lifetime kWh against $0.12.
But there's a wrinkle the spec sheet misses. Reviewers describe the Ultra Plus as adding a rear expansion port that scales to 11kWhA12 and doubling the base Ultra's solar inputA13. If that's accurate — and it's worth confirming before you buy — the Plus is the one to grow a big off-grid or whole-home system around. For a standalone 3kWh unit, the cheaper Ultra still wins.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
On our spec record the two match on capacity, output, surge, cycles, UPS, weight, and noise, so the base Ultra's $300 lower price makes it cheaper to own at $0.10 per lifetime kWh against $0.12 — the value pick for a standalone unit.
the base Ultra is $1,199 vs the Ultra Plus's $1,499both are 3,072Wh at 4,000 cycles — identical on the spec recordthe base Ultra costs $0.10 per lifetime kWh vs $0.12
Why it mattersIf you won't expand, paying the Plus premium buys nothing our specs can measure.
Where the two stop being identical is expansion: reviewers report the Ultra Plus's rear port daisy-chains packs to 11kWhA12 and doubles the base Ultra's solar inputA13 — figures our spec record lists the same for both, so they're worth verifying, but they're the real reason to pay up.
reviewers say the Ultra Plus's rear port daisy-chains packs to 11kWhA12and roughly doubles the base Ultra's solar inputA13our spec record lists both at 1,600W solar and both expandable
Why it mattersWhole-home or big-solar builders should confirm those specs and lean Plus; everyone else can save $300.
Both weigh 77.2 lbs — reviewers call it 'thunderous'A10 — but both ship with wheels and a telescoping handle that make it 'effortless to cart around'A14, so it's a roll-it-don't-carry-it unit either way.
both units weigh 77.2 lbsreviewers call ~74 lbs 'thunderous'A10both ship with wheels and a telescoping handleA14
Why it mattersPlan to wheel it into place; the weight is identical and not a factor between the two.
The shared platform tests well: one reviewer ran a full remote workday on laptop, desktop, and monitors with 40% leftA8, the fans stay quiet even at max outputA2, and the UPS handed off with no dips when unplugged from the wallA6.
a reviewer ran a full remote workday on laptop, desktop, and monitors with 40% leftA8the fans stay quiet even at max outputA2the UPS handed off with no dips when unplugged from the wallA6
Why it mattersYou're getting a genuinely good 3kWh station either way; the decision is purely price versus expansion headroom.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: By the spec record it's a pure price comparison, and the base Ultra is $300 less.
cost / lifetime kWh
By our spec record, this is a pure price comparison: two identical 3,072Wh units at 4,000 cycles, so both deliver the same 12,288 kWh over their lives. The base Ultra just costs less — $1,199 to $1,499 — which puts cost-to-own at $0.10 per lifetime kWh against $0.12, and warranty cost at $240 a year against $300.
If the two really are the same machine, that settles it: $300 saved for identical energy. The only thing that complicates the math is the expansion question below — because if the Ultra Plus can grow where the base can't, you're not quite comparing like for like.
Growth Path
Selected because: Expansion is the Plus's only real edge — and the point where our specs and the reviews disagree.
This is where the Plus makes its case, and where our spec sheet and the reviews disagree. Our record lists both units as expandable with 1,600W of solar. But reviewers describe the Ultra Plus as adding a dedicated rear expansion port that daisy-chains battery packs from 3kWh up to 11kWhA12, plus roughly double the base Ultra's solar inputA13.
If that holds, it reframes the decision. The base Ultra is the better buy for a standalone 3kWh unit or a modest expansion; the Ultra Plus is the platform for a serious whole-home or off-grid build that climbs toward 11kWh and pours in more solar. Confirm those two specs against EcoFlow's current sheet before you decide — they're the entire reason to spend the extra $300.
What the Specs Don't Tell You
Selected because: Shared 77-lb weight, plus the expansion/solar data discrepancy worth flagging to the reader.
The one spec-sheet gotcha is weight, and it's shared: both are 77.2 lbs, which one reviewer called 'thunderous'A10. The saving grace is also shared — both ride on wheels with a telescoping handle that testers found 'effortless to cart around'A14. Treat either as a roll-into-place unit, not something you lug.
The bigger thing the spec sheet hides is the expansion-and-solar discrepancy noted above: our record shows the two identical, while reviewers credit the Ultra Plus with an 11kWh expansion ceiling and double the solar inputA12A13. It's the rare case where the pricier model may genuinely offer more than the numbers we list — worth a direct check before you buy.
Your Life, Your Pick
Selected because: Identical 3kWh capacity clears everyday loads; van-life shortfall is the case for expansion.
At 3,072Wh, both breeze through the everyday scenarios identically: a weekend camp uses 80% of the battery, a full 8-hour blackout 63%, a remote workday 35%, and a CPAP night just 12%. The only modeled load that stops them is a full 24-hour van-life day at 4,685Wh, which overruns both at 179%.
Since the two are the same on capacity, scenarios don't separate them — and the van-life shortfall is exactly the case for expansion. That's where the Ultra Plus's reported 11kWh ceiling would matter: add packs and it clears a full off-grid day, while a standalone 3kWh unit of either name can't.
Strengths & trade-offs
EcoFlow DELTA 3 Ultra
Strengths
- +Costs $200 less
Trade-offs
- –No major technical downsides compared to rival.
EcoFlow DELTA 3 Ultra Plus
Strengths
- Solid all-rounder with standard specs.
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
Either unit
Two nights fits on either at about 80% of the battery — comfortable, and identical on both. Since capacity is the same, decide on price (the base Ultra) or on whether you'll expand later (the Ultra Plus).
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
Either unit
A full blackout uses about 63% of either unit — plenty for one night, with room to spare. They're the same on capacity, so the tiebreak is the $300 and the Plus's reported expansion headroom, not runtime.
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 uses about 12% of either overnight — trivial for a 3kWh unit, and both are quiet enough to sleep beside. This is a buy-the-cheaper-one case, which points to the base Ultra.
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
Either unit
A full work day draws about 35% of either battery; one reviewer ran laptop, desktop, and monitors all day and still had 40% left. Identical on both, so pick on price or expansion, not endurance.
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
Either unit
Game day uses about a quarter of either — easy. The real question is moving 77 pounds to the lot; both have wheels and a handle for exactly that. On power they're the same; the base Ultra is the cheaper way to get it.
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
A full 24-hour van-life load wants 4,685Wh and a single 3kWh unit holds far less, so both fall short at 179%. This is the scenario that justifies expansion — the Ultra Plus's reported 11kWh ceiling is built to clear it, while a standalone base unit of either name can't.
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 six 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
Dead heat — both run this 205W load for roughly 12.7h. Pick on price, weight, or ports.
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 0–174.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–34.8hHigh-Draw Appliances
These reveal the real limitsscale 0–2.6h¹ 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
July 12, 2026
Verdict: the DELTA 3 Ultra
For a standalone ~3kWh unit, buy the base DELTA 3 Ultra. On our spec record it's identical to the Ultra Plus — 3,072Wh, 3,600W with a 7,200W surge, 4,000 cycles, a 10ms UPS, 30dB, 77.2 lbs — for $300 less ($1,199 vs $1,499), which makes it cheaper to own at $0.10 per lifetime kWh against $0.12. The catch is expansion: reviewers report the Ultra Plus adds a rear port that daisy-chains battery packs to 11kWhA12 and roughly doubles the solar inputA13 — advantages our spec record doesn't capture. If you're building toward a large expandable system, the Ultra Plus earns its premium; if you want a great 3kWh unit as-is, the base Ultra is the same thing for less.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 12, 2026. The links below open EcoFlow's current price.
$1,299.00 list · direct from EcoFlow
or check the DELTA 3 Ultra Plus price$1,499.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 12, 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 Ultra rates 5.0/5 (99th percentile of 25 Large-class units), and DELTA 3 Ultra Plus rates 4.9/5 (96th percentile of 25 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.
77 Pounds, but Built to Roll
Both units weigh 77.2 lbs — genuinely heavy, and identical between them. What saves it is that both ship with wheels and a telescoping handle designed for exactly this, so you cart it rather than carry it. Plan a flat path from the car to wherever it lives; on stairs or rough ground, 77 pounds is still 77 pounds. Since the weight is the same on both, it's not a reason to pick one over the other.
Full record above — the Test Desk pick is the DELTA 3 Ultra.
Check DELTA 3 Ultra price →or check the DELTA 3 Ultra Plus 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
Both units have similar long-term ownership costs ($0.11/kWh vs $0.12/kWh). The price difference is what you see on the sticker — neither is a hidden bargain or rip-off.
Growth path
DELTA 3 Ultra
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,072Wh.
Accepts up to 1,600W 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.
DELTA 3 Ultra Plus
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,072Wh.
Accepts up to 1,600W 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.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, so neither locks you out of growth — decide on capacity, price, and the rest, not the expansion checkbox.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3 Ultra
Genuine field data on the base DELTA 3 Ultra is scarce — it's a recent release, and most reviews actually tested the Ultra Plus, which shares its battery, inverter, and chassis. Read the Ultra Plus impressions as largely applying to both: reviewers praise a substantial, non-fragile buildA9, quiet fans even at full outputA2, and a UPS that handed off with no dips when unplugged from the wallA6.
Where the base Ultra genuinely differs from the Plus is the part reviewers keep flagging: less expansion headroom and, per Digital Trends, half the solar inputA12A13. For a standalone 3kWh unit those may not matter; for a growing system they're the whole point. Treat long-term reliability as unproven for now, given how new the line is.
“Even when you're pushing it hard, the DELTA 3 Ultra Plus runs much quieter than older EcoFlow models, like the DELTA 2 Max.”
Sources
thesolarlab.com · postperspective.com · appleinsider.com · digitaltrends.com · popsci.com
EcoFlow DELTA 3 Ultra Plus
The Ultra Plus has the fuller — though still launch-window — review record. Testers call it remarkably quiet, one measuring under 25dB even under sustained load and comparing it to EcoFlow's premium DELTA Pro UltraB13B2, with a durable build rated to survive short drops and overnight dewB14B8. One ran a full eight-hour remote workday on a laptop, desktop, and monitors with 40% leftB5.
The recurring knocks are weight (~74 lbs, 'not lightweight by any standards'B9), a screen that washes out in direct sunB7, and price: reviewers only call the value strong at the discounted ~$1,499 street price, not the higher MSRPB10B11. The standout software note is Storm Guard, which auto-charges the unit when severe weather is forecastB12. No long-term owner data exists yet.
“even when you're pushing it hard, the DELTA 3 Ultra Plus runs much quieter than older EcoFlow models, like the DELTA 2 Max”
Sources
thesolarlab.com · postperspective.com · appleinsider.com · digitaltrends.com · storagereview.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
- Reviewers consistently praise the quiet fan operation of the Ultra-tier unit compared to older EcoFlow models, though this is described in professional test conditions rather than long-term ownership. [DELTA 3 Ultra · 2 entries]
- UPS/switchover performance is repeatedly called seamless with no observed dips or shutdowns during power interruption tests. [DELTA 3 Ultra · 3 entries]
- The unit's substantial 74 lb weight is flagged across multiple reviews as a portability drawback, mitigated somewhat by wheels and handle design. [DELTA 3 Ultra · 2 entries]
- Build quality/durability (casing, cable, port covers) is repeatedly highlighted as premium and well-engineered. [DELTA 3 Ultra · 2 entries]
- Professional reviewers consistently describe the fan noise as very quiet even under heavy load, comparable to EcoFlow's premium DELTA Pro Ultra line. [DELTA 3 Ultra Plus · 3 entries]
- Reviewers report solid UPS/pass-through charging performance with no noticeable switchover issues or output throttling tied to input wattage. [DELTA 3 Ultra Plus · 2 entries]
- The unit's high weight (~74 lbs) and premium MSRP are repeatedly flagged as drawbacks, though discounted street pricing is seen as making the value proposition much stronger. [DELTA 3 Ultra Plus · 3 entries]
- Build quality/durability is praised as substantial and non-fragile across multiple independent reviews. [DELTA 3 Ultra Plus · 2 entries]
- A2
“Even when you're pushing the inverter to its maximum output, the fans never become annoying or distracting.”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · 2025-09/10 (approx) · [positive]
- A6
“I didn't experience any shut-offs or dips when I unplugged the EcoFlow from the wall.”
postperspective.com — Review: EcoFlow Delta 3 Ultra Plus Portable Power Station · 2026-04 · [positive]
- A8
“I was able to work remotely for an eight-hour day with 40% power left, which included running my laptop, desktop workstation and monitors.”
postperspective.com — Review: EcoFlow Delta 3 Ultra Plus Portable Power Station · 2026-04 · [positive]
- A9
“It does not feel cheap or fragile. Everything from the outer shell case to the plastic buttons and the AC cable feels substantial and durable enough to withstand day-to-day wear and tear.”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11-16 · [positive]
- A10
“Weighing in at a thunderous 74 pounds, the Ultra is not considered lightweight by any standards.”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11-16 · [mixed]
- A12
“The Ultra Plus adds a rear expansion port that supports daisy-chaining additional battery packs, scaling total capacity from 3kWh up to 11kWh.”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review · 2026-07 (approx, 1 week ago) · [positive]
- A13
“This is double the original DELTA 3 Ultra's solar input and among the highest in this class of portable power stations.”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review · 2026-07 (approx, 1 week ago) · [positive]
- A14
“The sturdy telescoping handle and wheels make it effortless to cart around, and if you do have to lift its admittedly somewhat hefty 74 lbs, grab handles are well placed for the task.”
popsci.com — EcoFlow DELTA 3 portable power station series first impressions · 2025-09-29 · [positive]
- B2
“we'd probably say the noise it creates is similar to what you hear when you run the DELTA Pro Ultra, which is pretty amazing”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · unknown · [positive]
- B5
“I was able to work remotely for an eight-hour day with 40% power left, which included running my laptop, desktop workstation and monitors”
postperspective.com — Review: EcoFlow Delta 3 Ultra Plus Portable Power Station · 2026-04 · [positive]
- B7
“while facing the sun, I had to employ the classic "cup hands cover" maneuver to get a clear look at the screen status”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11 · [mixed]
- B8
“It does not feel cheap or fragile. Everything from the outer shell case to the plastic buttons and the AC cable feels substantial and durable”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11 · [positive]
- B9
“Weighing in at a thunderous 74 pounds, the Ultra is not considered lightweight by any standards”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11 · [mixed]
- B10
“Where it falls short is in price justification at its $2,899 MSRP”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review: Portability meets serious firepower · unknown (approx. 1 week old at capture) · [negative]
- B11
“At the heavily discounted street price of around $1,499–$1,599, the value equation shifts dramatically in the Ultra Plus's favor”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review: Portability meets serious firepower · unknown · [positive]
- B12
“EcoFlow's companion app adds genuinely useful features like Storm Guard, which automatically charges the unit when severe weather is detected”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review: Portability meets serious firepower · unknown · [positive]
- B13
“Each unit operates quietly at under 25dB, remaining unobtrusive even during sustained loads”
storagereview.com — EcoFlow DELTA 3 Max Plus & Ultra Plus Review · 2025-09-30 · [positive]
- B14
“the Delta 3 Ultra Plus can withstand drops of up to 0.2m, and both models feature moisture resistance to mitigate risks from overnight dew”
storagereview.com — EcoFlow DELTA 3 Max Plus & Ultra Plus Review · 2025-09-30 · [positive]
Research compiled July 12, 2026.
Who Should Buy Which
Buy the DELTA 3 Ultra if you…
- →You want a standalone ~3kWh unit and the two look identical to you — the base Ultra is $300 less and cheaper to own ($0.10 vs $0.12 per lifetime kWh).
- →Your expansion plans are modest, so the Plus's bigger ceiling and solar don't change your decision.
- →You'd rather put the $300 toward panels or an expansion battery than the badge.
Buy the DELTA 3 Ultra Plus if you…
If neither fits
If you need to cover a full 24-hour van-life day (4,685Wh), neither 3kWh base does it alone — you'd expand (ideally the Ultra Plus) or step up to a larger system. And if 3kWh is more than you need, a 1–2kWh unit saves weight and a lot of money.
The Bottom Line
For most buyers, buy the base DELTA 3 Ultra. Our spec record shows it identical to the Ultra Plus — same 3,072Wh, output, surge, cycles, UPS, and weight — for $300 less, and cheaper to own at $0.10 per lifetime kWh. As a standalone 3kWh station, it's the same excellent unit without the premium.
The Ultra Plus earns its price only on expansion, and only if the reviews are right: they credit it with an 11kWh daisy-chain ceiling and double the base Ultra's solar inputA12A13, neither of which shows up in our spec record. If you're building a large off-grid or whole-home system, confirm those specs and the Plus is worth it. If you want a great 3kWh unit as it sits, save the $300.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
EcoFlow DELTA 3 Ultra or Ultra Plus — which should I buy?
For a standalone unit, the base DELTA 3 Ultra: our spec record shows it identical to the Ultra Plus — 3,072Wh, 3,600W, 7,200W surge, 4,000 cycles, a 10ms UPS — for $300 less ($1,199 vs $1,499). The Ultra Plus's case is expansion: reviewers say it daisy-chains to 11kWh and doubles the solar input. If you'll build a big system, pay up for the Plus; if not, the Ultra is the same machine for less.
What does the extra $300 for the Ultra Plus actually buy?
On our spec sheet, nothing — the two are listed identically. According to reviewers, though, the Ultra Plus adds a rear expansion port scaling to 11kWh and roughly double the base Ultra's solar input. Those aren't reflected in our spec record, so verify them against EcoFlow's current specs; they're the only real reason to choose the Plus.
Can either run my house during a blackout?
For a day, comfortably — a full 8-hour blackout uses about 63% of either unit's 3,072Wh, and a CPAP night just 12%. A 24-hour van-life or whole-home day (4,685Wh) overruns both, which is where expansion matters: the Ultra Plus's reported 11kWh ceiling is built for that, while a standalone 3kWh unit isn't.
Are these heavy?
Yes — both are 77.2 lbs, which one reviewer called 'thunderous'. Both include wheels and a telescoping handle that testers found makes them 'effortless to cart around', so plan to roll either into place rather than carry it. The weight is identical on the two, so it's not a factor between them.
Where to buy
EcoFlow DELTA 3 UltraPick
$1,299.00
$1,299.00 list · direct from EcoFlow
EcoFlow DELTA 3 Ultra Plus
$1,499.00
$1,499.00 list · direct from EcoFlow
Prices may vary by retailer and are subject to change.