EcoFlow DELTA Pro Ultra
- AC delivered · est.
5,222 Wh. Show source
estimated sourceus.ecoflow.com ↗2026-07-04- output
7,200 W. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- surge
10,800 W. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- weight
82.4 kg. Show source
claimed sourceus.ecoflow.com ↗2026-07-04
Balanced
#3 of 5
in the Whole-home / mega class · small class (n=5)
Lifted by Durability & longevity and Output & versatility; held back by capacity & expansion.
Check current availability and pricing at the retailer.
See alternatives to the EcoFlow DELTA Pro Ultra →At a glance
We review EcoFlow DELTA Pro Ultra as a whole-home / mega model. Use output, delivered capacity and startup limits to check your appliances. It supplies 7,200 W of continuous AC output. BatteryRank scores it 57 out of 100 within its size class.
EcoFlow DELTA Pro Ultra specs at a glance
Find the reading you need, then follow its source in the full specifications below.
- How much does the EcoFlow DELTA Pro Ultra weigh?
82.4 kg (181.7 lb), manufacturer-claimed, without accessories.
Source and date. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- What are the dimensions of the EcoFlow DELTA Pro Ultra?
690 × 481 × 214 mm (27.2 × 18.9 × 8.4 in), length × width × height, manufacturer-claimed.
Source and date. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- How many watts can the EcoFlow DELTA Pro Ultra output?
7,200 W continuous AC output and 10,800 W surge output, manufacturer-claimed. Appliance startup demand must stay within the relevant limit.
Source and date. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- How much solar input can the EcoFlow DELTA Pro Ultra accept?
5,600 W maximum solar input, manufacturer-claimed. Actual harvest depends on panel compatibility, sun, orientation, temperature, and conversion losses.
Source and date. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- How far can the EcoFlow DELTA Pro Ultra expand?
Up to 30,000 Wh with compatible expansion hardware, manufacturer-claimed. The base-unit capacity and expansion-system capacity are shown separately.
Source and date. Show source
claimed sourceus.ecoflow.com ↗2026-07-04
Our verdict on the EcoFlow DELTA Pro Ultra
A modular home-backup system rather than a product you carry: 6,144 Wh, 7,200 W continuous, 82.4 kg, and an IP54 rating on the battery that no portable unit in our catalog carries. The 5,600 W solar input is the number that defines its role — it is sized to be fed by a roof, not a socket. Only 3 AC outlets appear on the unit itself, which tells you the intended connection is a panel or a transfer switch rather than plugged-in appliances.
- You are wiring it into the house rather than plugging things into itSplit-phase 240 V output plus a 7,200 W continuous rating covers most residential circuits, and the sparse 3-socket front panel signals that direct wiring is the expected path.
- The installation will sit somewhere damp or dustyThe battery carries an IP54 rating per the manufacturer, which is protection against dust ingress and splashing water that unrated units in this class have no claim to.
- You want the pack refilled by generation rather than by grid5,600 W of solar input can return the full 6,144 Wh in a little over an hour of ideal output, making genuine off-grid cycling practical.
- The unit will ever need relocating by hand82.4 kg is beyond any reasonable manual handling, and unlike a fixed home battery it has no wall-mount design to justify the immobility. The 5000 Plus delivers 5,040 Wh at 61 kg rather than 82.4 kg.
- You are sizing for whole-home independence rather than partial backup6,144 Wh is roughly a day and a half of essential loads; whole-home independence through a multi-day event needs a different order of storage. The Ultra X doubles storage to 12,288 Wh and takes 10,000 W of solar.
The trade-off to weigh: The IP54 rating is a genuine differentiator and it applies to the battery, per the manufacturer — not necessarily to the inverter unit, the cabling, or the connections you make in the field. Read it as protection for one component of a system, because an installation is only as weather-resistant as its least protected part, and that is rarely the cell pack.
What our data can’t tell you: We hold no wall-recharge time for this unit at all, so we cannot tell you how it behaves on grid power — a real gap for a system many buyers will run grid-tied. Dimensions, noise and the expansion ceiling are likewise unsourced, and the 0 ms switchover figure is a strong claim we have not seen independently confirmed.
BatteryRank Engineering Team · Last reviewed · Method
Where to buy
Affiliate links: we may earn a commission if you buy, at no extra cost to you. Commission never affects our rankings.
EcoFlow DELTA Pro Ultra
Capacity truth
The watt-hour number on the box isn't what reaches your devices. Rated on the label vs what actually leaves an outlet.
6,144 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04The marketing number — total cell capacity.
5,222 Wh. Show source
estimated sourceestimate = battery-side usable capacity × 85% inverter efficiencyWhat reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
Also independently measured
- Solar performance
—. Show source
verified sourceOEM supports 5600W solar per inverter (High-PV 4000W + Low-PV 1600W)2026-07-04
OEM supports 5600W solar per inverter (High-PV 4000W + Low-PV 1600W)
What it can run
Same sourced device assumptions used by our calculators, applied to this model's usable AC energy. Actual runtime varies with load, temperature, and standby draw.
| Device | Estimated runtime | Sourced assumption |
|---|---|---|
| CPAP (humidifier off) | about 72.5 nights | 9 W · |
| CPAP (heated humidifier on) | about 11.7 nights | 56 W · |
| Refrigerator (full-size) | about 83 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 290 hours | 18 W · |
| Laptop (65W charger) | about 161 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 261 full charges | 20 W · |
Who it fits
Mechanical matches against this model's own sourced specs — never invented sentiment, never a guess on a spec we don't have.
5222 Wh AC-delivered (est.) → multiple CPAP nights per charge
7200 W inverter, 5222 Wh AC-delivered (est.) → runs a fridge through an outage
6144 Wh, expandable, 12V DC out → long off-grid stays
How it scores
Four buyer pillars over seven sub-scores — computed from sourced data with a published formula, price-independent by design.
Power
Battery-side usable capacity and how much you can run at once.
Usable watt-hours and how far you can grow it with add-on batteries, versus its size class.
Continuous and surge wattage, outlet count, and USB-C fast-charging.
Trust
Owner reputation, safety record, warranty, and build durability.
Owner ratings, brand reputation, recall record, and warranty backing.
Rated cycle life, warranty length, cell chemistry, and weather sealing.
Charging
Wall and solar recharge speed.
Wall recharge speed, solar input, and multi-source charging.
Livability
62% dataLightweight, portable, and quiet enough to live with.
Weight, footprint, handle, and wheels, versus its size class.
Fan noise under load — quieter is better for bedrooms and CPAP use.
How this score is computed
We score the hardware using sourced specifications and independently attributed measurements. Seven sub-scores form a 0–100 composite, grouped into four buyer pillars. The score is price-independent: a sale changes what you pay, while this analysis evaluates the station's capabilities within its size class.
| Pillar | Built from |
|---|---|
| Power | Capacity & expansion + Output & versatility |
| Trust | Trust & reliability + Durability & longevity |
| Charging | Charging & solar |
| Livability | Portability + Quiet / livability |
Scores are cohort-relative — each model is ranked against others in its size class. Missing inputs renormalize out rather than scoring zero. Incomplete evidence can leave a sub-score unavailable; it does not establish that a model performs well. Any figure resting on a documented estimate is tagged est. Read our scoring and evidence methodology.
Full specifications
Manufacturer-claimed unless marked verified (FCC/UL/DOE/lab). Tap or focus a figure to view its source.
Capacity & battery
- Battery-side usable capacity
6,144 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- Rated cycle life
3,500 cycles. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- Battery chemistry
LiFePO4. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- Max capacity with expansion
30,000 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- Rated capacity
6,144 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- Cycle-life threshold
80 %. Show source
claimed sourceus.ecoflow.com ↗2026-07-04
Energy available from the battery before output-conversion losses. AC-delivered capacity is shown separately in Capacity Truth.
How many full charge-and-drain cycles before the battery drops to its rated threshold (shown alongside — brands rate to different thresholds, so never compare bare cycle counts).
The type of battery cell. LiFePO4 (LFP) cells last far more cycles and are more thermally stable than older lithium-ion (NMC) cells.
The largest total capacity this unit can reach once you add every supported expansion battery.
The battery's nameplate energy capacity — the headline number on the box. Battery-side usable and AC-delivered capacity are shown separately.
The remaining-capacity level the cycle rating is measured to. 3,000 cycles to 80% is a stronger battery than 3,000 cycles to 70% — always read the two numbers together.
Power output
- Continuous power output
7,200 W. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- Surge power output
10,800 W. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- AC outlets
3 outlets. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- USB-A ports
2 ports. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- USB-C ports
2 ports. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- USB-C max output
100 W. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- 12V car ports
1 ports. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- DC barrel ports
0 ports. Show source
claimed sourceus.ecoflow.com ↗2026-07-04- Max combined output
7,200 W. Show source
claimed sourceus.ecoflow.com ↗2026-07-04
The most power you can draw at once, sustained — this has to be higher than the running wattage of whatever you're plugging in.
A brief power spike the unit can absorb when a device first switches on — matters for things with motors or compressors, like fridges.
How many standard wall-style outlets are built in.
How many USB-A ports are built in, for charging older phones, lights, and accessories.
How many USB-C ports are built in — check the per-port wattage below if you need fast charging for a laptop.
The fastest a single USB-C port can charge a device — relevant for laptops and fast-charging phones.
How many car-socket (cigarette-lighter) style 12V outputs are built in. Match the device or its supported converter to the port's voltage and current limits; a CPAP needs its exact model's documented power connection.
How many round barrel-style DC outputs are built in, used by routers, some lights, and older electronics.
The most power the unit can deliver across ALL ports at the same time — can be lower than the AC rating plus every USB port added up.
Charging & solar
- Max solar input
5,600 W. Show source
claimed sourceus.ecoflow.com ↗2026-07-04
The most solar panel wattage the unit can accept — undersized panels just mean slower charging, not damage, but oversizing this is wasted money.
Reliability & durability
- UPS switchover time
0 ms. Show source
claimed sourceus.ecoflow.com ↗2026-07-04
How fast the unit takes over when grid power cuts out. Under ~20ms is fast enough that most electronics — including many CPAP machines — won't even blip.
Size & portability
- Weight
82.4 kg. Show source
claimed sourceus.ecoflow.com ↗2026-07-04
How much the unit weighs on its own, without accessories — relevant for portability and carrying it up stairs during an outage.
What reviewers & owners report
Named outlets and marketplaces, each rating credited where it was published.
- genuine whole-home 120/240V backup — Across reviewers ·
- true 0ms online + <20ms backup UPS — Across reviewers ·
- modular scaling to 90kWh / 21.6kW — Across reviewers ·
- 4G cloud monitoring — Across reviewers ·
- high 5600W solar — Across reviewers ·
- 5-yr warranty — Across reviewers ·
- wide -20C operating range — Across reviewers ·
- very high cost — Across reviewers ·
- modular inverter+battery needs professional install (Smart Home Panel) — Across reviewers ·
- heavy components — Across reviewers ·
- lower Amazon rating hints at setup/support friction — Across reviewers ·
- complex vs plug-and-play units — Across reviewers ·
- Wirecutter: none
- Popular Mechanics: none
- covered as a premium modular whole-home system rivaling Delta Pro Ultra X / home battery installs — YouTube reviewers ·
- no single measured consensus captured — YouTube reviewers ·
Brand reputation: 2024 whole-home flagship; Amazon 4.0/55 (small sample, some install/support friction). Competes with home battery systems. Brand-level: EcoFlow DELTA Max 2000 (EFD310, older gen) fire recall 2025-10 (separate product)
Sources: us.ecoflow.com/products/delta-pro-ultra (full on-page Specs) accessed 2026-07-04; amazon.com/dp/B0CQXM3NJL (12kWh config) & B0CQXMZ5BK (base) accessed 2026-07-04; saferproducts.gov (EcoFlow) checked 2026-07-04
What else to consider instead of the EcoFlow DELTA Pro Ultra
Same or adjacent size class, ordered by the price-independent composite. Every alternative is better than the EcoFlow DELTA Pro Ultra at something and worse at something else, so each row states both halves — each one arithmetic on two sourced readings, with a dimension skipped rather than guessed when either side is missing a figure.
- EcoFlow DELTA Pro Ultra Xscore 80 · same size class
- Why you would switch
- The EcoFlow DELTA Pro Ultra X delivers 100% more usable AC energy (10,445 Wh vs 5,222 Wh).
- What you give up
- The EcoFlow DELTA Pro Ultra is 39% lighter (82.4 kg vs 135.5 kg).
- Pecron F5000LFPscore 69 · same size class
- Why you would switch
- The Pecron F5000LFP is 32% lighter (56.2 kg vs 82.4 kg).
- What you give up
- The EcoFlow DELTA Pro Ultra delivers 20% more usable AC energy (5,222 Wh vs 4,352 Wh).
- Jackery Explorer 5000 Plusscore 56 · same size class
- Why you would switch
- The Jackery Explorer 5000 Plus is 26% lighter (61 kg vs 82.4 kg).
- What you give up
- The EcoFlow DELTA Pro Ultra delivers 22% more usable AC energy (5,222 Wh vs 4,284 Wh).
- Zendure SuperBase V6400score 46 · same size class
- Why you would switch
- Nothing in the sourced data separates it from the EcoFlow DELTA Pro Ultra by a margin worth acting on.
- What you give up
- The EcoFlow DELTA Pro Ultra carries 89% more continuous output (7,200 W vs 3,800 W), which decides what it can run at all.
- EcoFlow DELTA Pro 3score 76 · one class over
- Why you would switch
- The EcoFlow DELTA Pro 3 is 38% lighter (51.5 kg vs 82.4 kg).
- What you give up
- The EcoFlow DELTA Pro Ultra delivers 38% more usable AC energy (5,222 Wh vs 3,790 Wh).
Quick answers
Each answer restates a sourced figure from elsewhere on this page — nothing new, nothing guessed.
- How many milliamp-hours (mAh) is the EcoFlow DELTA Pro Ultra?
- Its manufacturer-claimed capacity is 6,144 Wh. A mAh conversion also needs the battery's nominal voltage: mAh = Wh × 1,000 ÷ V. Our record has no sourced nominal battery voltage, so we leave the mAh figure unspecified. USB output voltage is not a substitute for battery voltage. Compare watt-hours across power stations. Use the mAh to Wh converter.
- How much capacity does the EcoFlow DELTA Pro Ultra deliver through an AC outlet?
- About 5,222 Wh of the rated 6,144 Wh reaches an AC outlet from a full charge — an estimate after our published 15% inverter-loss constant (marked est. on this page).
- What is the cycle-life rating of the EcoFlow DELTA Pro Ultra?
- 3,500 cycles to 80% remaining capacity, manufacturer-claimed. A cycle rating is not a calendar-life guarantee.
- Can the EcoFlow DELTA Pro Ultra work as a UPS?
- Its manufacturer-claimed transfer time is 0 ms. Confirm that your connected equipment tolerates that transfer time; this is not the same as a zero-transfer online UPS.
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