EcoFlow · DELTA series
EcoFlow DELTA 3 Ultra
The DELTA 3 Ultra has lost three head-to-heads in 43, none to an EcoFlow or an Anker, which makes it the yardstick for the rest of the DELTA 3 line. Three kilowatt-hours, 3,600 watts, 72 pounds, a weekend camp with a fifth to spare. Reviewers’ one theme is quiet, aimed at the older DELTAs it replaced.
3.1 kWh · 3,600 W · 72.1 lb · 4,000 cycles · 50 head-to-heads
4,710
Power Score · Appliance Class
- 3.1 kWh
- capacity
- 3,600 W
- output
- 72.1 lb
- weight
- 4,000
- rated cycles
Should you buy it right now?
Buy it: $1,349 is 4% under its usual $1,399, and it clears 5 of 6 real-world jobs.
Real-world jobs
5 of 6
Falls short only on Van Life Daily
Head-to-head record
43–7
50 adjudicated matchups
Verdicts by Gunner Gustafson and the Test Desk·Figures computed 2026-10-04
01 · Six real-world jobs
What the DELTA 3 Ultra actually runs
The load profiles every comparison on the site is scored on, computed for this unit alone: energy needed against the usable tank after inverter losses, and whether the inverter holds and starts the biggest single load.
Weekend Camping
Clears it2 nights · Two nights off-grid with essential comfort
2,100Wh needed · 80% of the tank · 511Wh spare
Peak 75W: starts and holds
8-Hour Blackout
Clears it8 hours · Keep the essentials running through a night without power
1,645Wh needed · 63% of the tank · 966Wh spare
Peak 150W: starts and holds
CPAP Overnight
Clears it8 hours · Sleep therapy without interruption — the #1 medical use case
320Wh needed · 12% of the tank · 2,291Wh spare
Peak 40W: starts and holds
Remote Workday
Clears it8 hours · Full work day off-grid without power anxiety
910Wh needed · 35% of the tank · 1,701Wh spare
Peak 60W: starts and holds
Tailgate Party
Clears it4 hours · Game day power for the crew
670Wh needed · 26% of the tank · 1,941Wh spare
Peak 400W: starts and holds
Van Life Daily
Falls short24 hours · A full day of mobile living — the ultimate endurance test
4,685Wh needed · 179% of the tank · 2,074Wh short
Peak 150W: starts and holds
02 · Head-to-head record
43 wins in 50 written matchups
Every matchup is a full verdict scored on the six jobs above plus price, longevity and portability. This is the set shoppers search for, not a random sample.
Win share
43–7
- vs BLUETTI13–3
- vs EcoFlow13–2
- vs Anker7–1
- vs Jackery7–1
- vs Goal Zero2–0
- vs DJI1–0
winsDELTA 3 Ultra vs EcoFlow DELTA 3 Max Plus
496 searches reached this matchup
winsDELTA 3 Ultra vs EcoFlow DELTA 2 Max
362 searches reached this matchup
winsDELTA 3 Ultra vs EcoFlow DELTA 3 Max
302 searches reached this matchup
winsDELTA 3 Ultra vs EcoFlow DELTA Pro Ultra
235 searches reached this matchup
winsDELTA 3 Ultra vs Jackery HomePower 3600 Plus
158 searches reached this matchup
winsDELTA 3 Ultra vs Anker SOLIX F3000
130 searches reached this matchup
03 · From the verdicts
Who it is for, and when a rival won instead
Each line is lifted from a written matchup where it decided the verdict, and links to the page it came from. Repeated across many matchups means it is the unit’s signature, not one author’s opinion.
Buy the DELTA 3 Ultra if…
You want a big station that can still go in a car for a trip, and 72.1 lb is the limit of what you'll lift.
Decided 7 matchups · read one →
You're buying for the decade, not the weekend: more capacity for less money, on the same five-year warranty, and ports you don't have to buy twice.
Decided 5 matchups · read one →
You work off-grid on a desktop and monitors: one reviewer got through an eight-hour day and still had 40% left [A8].
Decided 5 matchups · read one →
You want to buy it and forget it. The bigger installed base and US-based support make the DELTA the lower-drama ownership experience of the two.
Decided 5 matchups · read one →
A rival won when…
You already own Goal Zero panels, Tank batteries and Yeti-Ready gear, and switching ecosystems means rebuying hardware that currently works fine.
Decided 8 matchups · read one →
You want the faster solar refill and the lighter unit. 1,000W of solar input against 800W, and 67.2 lbs against 72.1.
Decided 5 matchups · read one →
Solar is your main refill. The Elite takes more in and needs less of it, and you feel that on the fourth grey day rather than the first.
Decided 4 matchups · read one →
The person who carries it more than they park it, up stairs and over tailgates, and will feel every pound they didn't buy.
Decided 4 matchups · read one →
04 · Price history
What the DELTA 3 Ultra actually sells for
The number on the buy button, read twice a day, one point per day. Never the sticker, never a “was” price.
Read from us.ecoflow.com twice a day since July 17 · 80 days
4% under usual · best seen $1,299 on August 4
Built from the Oct 4, 7 PM UTC read.
$1,399
Usual price
68% of days tracked
$1,299
Best we've seen
August 4
$1,349
Today
4% under usual
$1,399
Highest seen
0 days above usual
How to read this
- Usual is the price the unit carried most of the time, tested for how long it held rather than how often we looked. A weekend promotion cannot move it.
- Best is the lowest price we have read on the store itself. Typed coupon codes, member-only prices and marketplace listings are not counted; anything applied automatically at checkout is.
- A gap in the line is a day we could not read a price. We never draw across one, and we never show the store’s own “was” price.
Method on the methodology page.
Share the numbers
EcoFlow DELTA 3 Ultra: usually $1,399, best $1,299 (Aug 4), today $1,349 on us.ecoflow.com. Tracked twice a day since Jul 17. https://stationarena.com/products/ecoflow-delta-3-ultra#price-history
Alerts for the DELTA 3 Ultra
One email when it drops below $1,399, comes back in stock, or a newer model in this line appears. Nothing else.
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Black Friday · 38 days out
Will the EcoFlow DELTA 3 Ultra go on sale for Black Friday?
Price to beat $1,299Nobody knows until EcoFlow moves, but we know what a real deal would be: anything under $1,299, the lowest price we have recorded (August 4). Last Black Friday it was reported at $999 at EcoFlow store. It has sat at least 5% under its usual $1,399 on 19 of the 80 days we have tracked. We read the store twice a day, and the moment it drops it shows on our Black Friday deals page.
05 · Voices
What 2 owner reports say about the DELTA 3 Ultra
Owner reports are paraphrased from public YouTube comments and each links to its source; reviewer consensus is counted from cited excerpts, never quoted; our own verdicts are quoted. Specs on this page never come from any of them.
- 100%
- positive
- 1
- self-declared owners
- 0
- measured reports
- 2
- videos
- 52%
- EcoFlow norm
- 2026–2026
- reporting period
2 for, 0 against
tenure rarely stated
numbers, not impressions
1 channel
across 1,668 reports
2026-03-18 to 2026-04-18
Weighted read
100% positive weighted · corpus 51% · above the norm
Raw counts reward whoever writes most, and people write when something breaks. Here each report is weighted by what the complaint costs a buyer (a failure outranks an app gripe) and by its evidence (a measured owner report outranks a shopper’s opinion), then compared with every report in the corpus.
- Failures, returns, support0 against · 0 for
- How it performs0 against · 2 for
- How it feels to use0 against · 0 for
By topic, against the EcoFlow norm
Bars count this unit’s reports; the tick is the share of positive reports for the same topic across every EcoFlow unit in the corpus.
- Inverter & surge100% positive · brand 56%1
- Capacity & runtime100% positive · brand 81%1
left: negative · right: positive
When the reports were made
What owners compare it against
What owners praise
What owners complain about
- Nothing on this side yet.
Reviewer consensus
12/15 positive excerpts, 5 sources
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.
thesolarlab.com · postperspective.com · appleinsider.com · digitaltrends.com · popsci.com · researched 2026-07-09
EcoFlow, brand-wide
52% positive across 1,668 reports. The brand-wide complaint is shipping & availability (91% negative); the brand-wide praise is capacity & runtime (81% positive).
From the test desk
“The Ultra costs $200 more and weighs 21.4 lbs more, but it starts with 50% more capacity, comes out cheaper to own over its life, and scores higher on PowerScore — 5,072 against 4,312.”
“The DELTA 3 Ultra costs $350 more than the DELTA 2 Max ($1,399 vs $1,049) but delivers exactly double the lifetime energy (12,288 kWh vs 6,144) at a lower cost per lifetime kWh ($0.11 vs $0.15), a UPS response twice as…”
“Take the DELTA 3 Ultra if you recharge from a wall.”
06 · Where each number comes from
Spec sheet, in four cards
Every field carries its source: green is the manufacturer’s own document, blue was adjudicated after sources disagreed, grey is the catalogue as imported. Then compare it line by line with the units people actually weigh it against.
Battery
3072
Capacity (Wh)
- ChemistryLiFePO4
- Charging Cycles4000
- Battery Expansion FeasibilityNo
Power out
3600
Output (W)
- Surge Peak7200W
- AC Outlets4
- 240V Outlets0
- 30A RV Outlets1
- 12V Car Outlets1
- USB-C Ports2
- USB-A Ports2
- USB-C Charging Outputs140W
Charging
800
Solar Input (W)
- Solar Input TypeXT60
Living with it
72.1
Weight (lbs)
- Noise Level (db)30
- UPSYes (10ms)
- App ControlYes
- Warranty (Years)5
Compare it with
DELTA 3 Ultra vs
leads on 3 · trails on 4
| Spec | DELTA 3 Ultra | DELTA 3 Max Plus | Gap |
|---|---|---|---|
| Usual price | $1,399 | $1,199 ● | +$200 |
| Capacity (Wh) | 3072 ● | 2048 | +1024 |
| Output (W) | 3600 ● | 3000 | +600 |
| Surge (W) | 7200W ● | 6000W | +1200 |
| Rated cycles | 4000 | 4000 | 0 |
| Solar input (W) | 800 | 1000 ● | -200 |
| Weight (lb) | 72.1 | 50.7 ● | +21.4 |
| Noise (dB) | 30 | 30 | 0 |
| AC outlets | 4 | 4 | 0 |
| USB-C ports | 2 | 3 ● | -1 |
| Warranty (yr) | 5 | 5 | 0 |
| Chemistry | LiFePO4 | LiFePO4 | |
| UPS | Yes (10ms) | Yes (10ms) |
● marks the better figure where direction is clear. Price is each unit’s usual price.
Read the full verdict →Solar
Charge the DELTA 3 Ultra from the sun
Every panel we track, checked against its solar input: which ones fit, the adapter each needs, and what it really delivers.
- Solar input
- 800 W
- Plug
- Panels that work
- 30 of 39
- Refill at full sun
- ~3.8 h
07 · EcoFlow DELTA line
Where it sits in the line
Capacity bars are to scale across the line; prices are each unit’s usual price, not today’s.
DELTA 3 1000 Air
960 Wh · $309
DELTA 2
1 kWh · $499
DELTA 3
1 kWh · $629
DELTA 3 Classic
1 kWh · $499
DELTA 3 Plus
1 kWh · $719
DELTA 3 1500
1.5 kWh · $599
DELTA 2 Max
2 kWh · $1,049
DELTA 3 Max
2 kWh · $899
DELTA 3 Max Plus
2 kWh · $1,199
DELTA 3 Ultra
3.1 kWh · $1,399
DELTA 3 Ultra Plus
3.1 kWh · $1,599
Not yet on sale: A 4 kW, 3,072 Wh jobsite power station in a sealed metal body with a built-in RCD, aimed at the European contractor who cannot run a combustion generator. EcoFlow PowerRock 4000 Debuts: A 7.2 kW Battery for the Jobsite
08 · At its usual price
Cost of ownership
Cycle life is the manufacturer’s rating to 80% capacity; the lifetime figure is that rating times the nameplate capacity.
$0.46
per Wh
at $1,399
$0.11
per lifetime kWh
12,288 kWh over 4,000 cycles
11.0 yr
if cycled daily
38 yr at weekends only
5 yr
warranty
$280 per covered year
09 · From the matchups
Questions people ask
What solar panels work with the DELTA 3 Ultra?
Any panel between 11 V and 60 V, through its input, up to 800 W. 30 of the 39 panels we track work with it. Our pick: the Jackery SolarSaga 500 X. 3 panels deliver 751 W.
Is the EcoFlow DELTA 3 Ultra worth $200 more than the DELTA 3 Max Plus?
Yes, if you'll use the extra capacity. The Ultra costs less per lifetime kilowatt-hour than the Max Plus — $0.11 against $0.13 — because its bigger battery and higher total cycle output sell more energy over its life. If your use case comfortably stays under 2,048Wh, you're paying $200 for headroom you won't touch.
Does the EcoFlow DELTA 3 Ultra support battery expansion?
No. The Ultra is a sealed 3,072Wh unit with no expansion port — what you buy is what you'll ever have. The Max Plus is the one that expands, starting smaller at 2,048Wh but able to grow, per reviewers, from 2kWh up toward 10kWh with EcoFlow's Smart Extra Batteries [A4].
How much heavier is the DELTA 3 Ultra than the Max Plus?
21.4 lbs — 72.1 lbs against 50.7 lbs. That's a real difference if you're lifting it solo rather than rolling it, though it doesn't change which one is cheaper to own.
Is the DELTA 2 Max cheaper than the DELTA 3 Ultra?
Yes — $1,049 against $1,399, a $350 gap. The Max is the cheaper unit to buy; the Ultra is the cheaper one to own per lifetime kilowatt-hour, at $0.11 against the Max's $0.15.
Can the DELTA 3 Ultra's battery be expanded?
No — the DELTA 3 Ultra is sealed at 3,072Wh, with no expansion battery option. The DELTA 2 Max can add expansion batteries, but it starts at 2,048Wh, so a first expansion battery mostly closes the 1,024Wh gap to the Ultra rather than pulling ahead of it.
Some links are affiliate links; they never change the price you pay or which price we show. Owner reports are paraphrased from public comments and link to their source.