EcoFlow · DELTA Pro series
EcoFlow DELTA Pro Ultra + 1 Battery
The DELTA Pro Ultra with one extra battery is 12 kilowatt-hours and 294 pounds, not a power station so much as a small utility on wheels. It clears every scene we run, the full day in a van included, on under half the tank. Reviewers’ one recurring caution is a state-of-charge gauge that drops faster than the electrons do.
12.3 kWh · 7,200 W · 293.6 lb · 4,000 cycles · 6 head-to-heads
10,756
Power Score · Whole-Home Capable
- 12.3 kWh
- capacity
- 7,200 W
- output
- 293.6 lb
- weight
- 4,000
- rated cycles
Should you buy it right now?
Fair price today: $5,999 is what it normally sells for. It clears 6 of 6 real-world jobs and wins 3 of 6 matchups.
Verdicts by Gunner Gustafson and the Test Desk·Figures computed 2026-09-07
01 · Six real-world jobs
What the DELTA Pro Ultra + 1 Battery 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 · 20% of the tank · 8,345Wh spare
Peak 75W: starts and holds
8-Hour Blackout
Clears it8 hours · Keep the essentials running through a night without power
1,645Wh needed · 16% of the tank · 8,800Wh spare
Peak 150W: starts and holds
CPAP Overnight
Clears it8 hours · Sleep therapy without interruption — the #1 medical use case
320Wh needed · 3% of the tank · 10,125Wh spare
Peak 40W: starts and holds
Remote Workday
Clears it8 hours · Full work day off-grid without power anxiety
910Wh needed · 9% of the tank · 9,535Wh spare
Peak 60W: starts and holds
Tailgate Party
Clears it4 hours · Game day power for the crew
670Wh needed · 6% of the tank · 9,775Wh spare
Peak 400W: starts and holds
Van Life Daily
Clears it24 hours · A full day of mobile living — the ultimate endurance test
4,685Wh needed · 45% of the tank · 5,760Wh spare
Peak 150W: starts and holds
02 · Head-to-head record
3 wins in 6 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
3–2–1
- vs EcoFlow1–1–1
- vs Jackery1–1
- vs BLUETTI1–0
tieDELTA Pro Ultra + 1 Battery vs EcoFlow DELTA Pro Ultra X
34 searches reached this matchup
winsDELTA Pro Ultra + 1 Battery vs BLUETTI EP900 + 2×B500
10 searches reached this matchup
winsDELTA Pro Ultra + 1 Battery vs Jackery Explorer 5000 Plus Double Kit
9 searches reached this matchup
losesDELTA Pro Ultra + 1 Battery vs EcoFlow RIVER 2 Pro
8 searches reached this matchup
losesDELTA Pro Ultra + 1 Battery vs Jackery Explorer 600 v2
1 searches reached this matchup
winsDELTA Pro Ultra + 1 Battery vs EcoFlow DELTA Pro Ultra + 2 Batteries
Written verdict
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 Pro Ultra + 1 Battery if…
You want the decision to be reversible. Bought from a retailer with a return policy, a DELTA Pro Ultra that disappoints you goes back.
Decided 2 matchups · read one →
You are building out a van, a cabin or a workshop and you will charge from a wall, a vehicle or a few panels. 5,600W of solar input is more ceiling than most builds will ever fill, and the 100W USB-C port lets laptops and phones skip the inverter entirely.
Anyone doing whole-home backup for outages measured in hours, not days — the single battery clears every non-van-life scenario in this test with room to spare.
Buyers who might relocate the unit later — a smaller move-in-day lift and a lower up-front price without giving up any output, surge, or UPS speed.
A rival won when…
You want a desk UPS and can live with a 30ms gap. That's a real rated figure; the 0ms our record carries for the DELTA Pro Ultra is one we won't vouch for.
Decided 2 matchups · read one →
You are doing a permanent whole-home install and buying a platform rather than a product. Eight B500 modules take the EP900 to roughly 39.6kWh [B2], and nothing on the EcoFlow side of this page is documented to go there.
You have, or are about to commission, a solar array big enough to embarrass a 5,600W input. The 9,000W ceiling is the single clearest reason to accept the higher price.
You will run close to a full cycle every day for well over a decade. That is the only duty where 6,000 cycles against 4,000 turns into money rather than a bullet point.
04 · Price history
What the DELTA Pro Ultra + 1 Battery 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 · 53 days
Carried on 100% of days tracked · dips reach $5,899
Built from the Sep 7, 5 AM UTC read.
$5,999
Usual price
100% of days tracked
$5,899
Best we've seen
August 4
$5,999
Today
at usual
$5,999
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 Pro Ultra + 1 Battery: usually $5,999, best $5,899 (Aug 4), today $5,999 on us.ecoflow.com. Tracked twice a day since Jul 17. https://stationarena.com/products/ecoflow-delta-pro-ultra-1-battery#price-history
Alerts for the DELTA Pro Ultra + 1 Battery
One email when it drops below $5,999, comes back in stock, or a newer model in this line appears. Nothing else.
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05 · Voices
What owners and reviewers say
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.
Reviewer consensus
1/10 positive excerpts, 1 sources
SoC/battery metering appears unreliable, with reported percentage dropping much faster than expected after resuming charge cycles
diysolarforum.com · researched 2026-07-15
From the test desk
“Every number that measures day-to-day use comes back identical: both hold 12,288Wh, and all six load scenarios tie because of it.”
“The DELTA Pro Ultra with its second battery costs $5,899 and stores 12,288Wh.”
“The DELTA Pro Ultra plus one battery is $5,999; the Jackery Double Kit is $5,899, $100 less — Jackery has flipped from the pricier unit to the cheaper one, and at this price point that gap decides nothing.”
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
12288
Capacity (Wh)
- ChemistryLiFePO4
- Charging Cycles4000
- Battery Expansion FeasibilityYes
Power out
7200
Output (W)
- Surge Peak10800W
- AC Outlets3
- 240V Outlets2
- 30A RV Outlets1
- 12V Car Outlets0
- USB-C Ports2
- USB-A Ports2
- USB-C Charging Outputs100W
Charging
5600
Solar Input (W)
- Solar Input TypeMC4
Living with it
293.6
Weight (lbs)
- Noise Level (db)<30
- UPSYes (0ms)
- App ControlYes
- Warranty (Years)10
Compare it with
DELTA Pro Ultra + 1 Battery vs
leads on 4 · trails on 4
| Spec | DELTA Pro Ultra + 1 Battery | DELTA Pro Ultra X | Gap |
|---|---|---|---|
| Usual price | $5,999 ● | $7,999 | $-2,000 |
| Capacity (Wh) | 12288 | 12288 | 0 |
| Output (W) | 7200 | 12000 ● | -4800 |
| Surge (W) | 10800W | 45000W ● | -34200 |
| Rated cycles | 4000 ● | 3500 | +500 |
| Solar input (W) | 5600 | 10000 ● | -4400 |
| Weight (lb) | 293.6 ● | 298.7 | -5.1 |
| Noise (dB) | <30 | <30 | 0 |
| AC outlets | 3 | 4 ● | -1 |
| USB-C ports | 2 | 2 | 0 |
| Warranty (yr) | 10 ● | 5 | +5 |
| Chemistry | LiFePO4 | LiFePO4 | |
| UPS | Yes (0ms) | Yes (<10ms) |
● marks the better figure where direction is clear. Price is each unit’s usual price.
Read the full verdict →07 · EcoFlow DELTA Pro 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 Pro
3.6 kWh · $1,899
DELTA Pro 3
4.1 kWh · $2,799
DELTA Pro Ultra
6.1 kWh · $4,199
DELTA Pro Ultra + 1 Battery
12.3 kWh · $5,999
DELTA Pro Ultra X
12.3 kWh · $7,999
DELTA Pro Ultra + 2 Batteries
18.4 kWh · $7,999
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.
$0.49
per Wh
at $5,999
$0.12
per lifetime kWh
49,152 kWh over 4,000 cycles
11.0 yr
if cycled daily
38 yr at weekends only
10 yr
warranty
$600 per covered year
09 · From the matchups
Questions people ask
Do the DELTA Pro Ultra + 1 Battery and DELTA Pro Ultra X have the same capacity?
Yes — both are 12,288Wh at this configuration, which is exactly why every scenario we model comes out tied. The difference between them isn't storage, it's how fast each one delivers and refills that storage.
From ecoflow delta pro ultra 1 battery vs ecoflow delta pro ultra x
Is the DELTA Pro Ultra + 1 Battery a two-person lift?
It's more than that. 293.6 lbs is the system total for a configuration EcoFlow itself names "+ 1 Battery", so it isn't one object, and we have no per-box weight to quote you. Plan a location with a floor and a doorway that work, and plan on setting it up once.
From ecoflow delta pro ultra 1 battery vs ecoflow river 2 pro
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.