EcoFlow · Power station · DELTA 3 Ultra Plus
Smart Output Priority: Choose which circuits stay powered via the app.
Product decision summary
Researched by Andrew Petla · reviewed under the FMG editorial standard · Sep 15, 2026
Trace the evidence · not a hands-on reviewBottom line
Best for: Home essentials & RV and camping
Running output
3,600W
Fuel / power
Rechargeable battery
Weight
1.3 lb
Strongest reasons
Know before buying
Usable runtime changes sharply with the load. Size your required watt-hours and recharge plan before buying.
Scores at a glance
58
Class score
97
Starter fit
Competitive in its class among 30 mid output power stations.
Excellent fitBest current buying route
$1,599
Sale price at EcoFlow
The only verified seller destination. Its listed price is known, but shipping and delivered cost still need confirmation. Confirm price, stock, shipping, and the exact model on the seller’s site.
Affiliate links may earn us a commission at no added cost to you. Disclosure
Follow the manual’s charging, temperature, storage, and battery-safety requirements.
Price intelligence Evidence ledger Accessories & manualsKey specifications
Published values stay labeled, and every usable metric includes class context. Missing data is shown instead of estimated.
| Specification | This model |
|---|---|
| Running output | 3,600WHigher than 40% of its class |
| Peak / starting output | 7,200WHigher than 64% of its class |
| Stored energy | 3,072WhHigher than 28% of its class |
| Product weight | 1.3 lbLighter than 93% of its class |
| Published sound level | Not publishedNo class comparison available |
| Fuel / power source | Rechargeable batteryPower station |
| Best current price | $1,599Sale price at EcoFlow |
Class comparisons use 30 mid output power stations. Runtime figures can use different loads, fuels, or test conditions; confirm the model manual before planning fuel or battery duration.
Infographic gallery
3,600W rated output
The comparison uses EcoFlow’s published rated and peak, surge, or maximum output figures.
Listed capacity
3,072Wh
Published runtime guidance
Runtime depends on stored capacity and connected load
33.7±0.6kg
Listed weight
613.1mm×327.71mm×394.95mm
Dimensions
Charging or integration
AC Input (Charge Only): 100-120V~15A 50/60Hz; Maximum PV Input Power(W): 1600W
Backup transfer
<10ms
Noise
Quiet battery operation; fan noise varies by load
Official product gallery
The current official image set for DELTA 3 Ultra Plus includes product views, connection diagrams, feature explanations, and compatible system configurations where EcoFlow publishes them.
Complete specifications
These pages retain EcoFlow's model-specific output, charging, battery, port, continuity, dimensions, environmental, engine, fuel, app-control, and warranty fields where published.
System capability
1. Smart Output Priority: Choose which circuits stay powered via the app
Power and expansion
2. 3-11kWh Expandable Capacity: Easily scale up, and can achieve longer runtime with an EcoFlow Smart Generator featuring automatic start and stop
Charging flexibility
3. 6 Ways to charge, Ready in Just 48 Mins: Ready in Just 48 Mins (0-80%) with Solar + Generator Dual Charging
Battery and durability
4. 3600W Powerful Output: 7200W surge output
Controls and continuity
5. Long-Lasting, Durable, and Reliable: Equipped with automotive-grade full-tab LFP cells, offering 10 years of reliable power, 24/7 protection BMS, Class-B certification, and EV-grade CTC structure that protects against overnight condensation and off-road bumps
Portability detail
6. 2 Easy Ways to Connect to Your Home: Manual Transfer Switch and Inlet Box
Compatibility note
7. 10ms Auto-Switch: keep critical devices like NAS systems and servers running smoothly
Additional manufacturer note
8. 25dB Whisper-Quiet Operation: Ultra-low noise (≤25dB at 600W)
Best-fit uses
Standout features
Use the independent calculator before choosing a battery system or generator.
Price & Availability
The lowest sticker price is not always the best offer. We rank exact-model seller pages using price, stock, shipping, freshness, returns, and warranty details—then show what is still unknown.
Price and delivered cost
Shipping is included only when the seller publishes a usable amount.
Stock and freshness
Current, low-stock, preorder, and stale records are scored differently.
Purchase protections
Published return and warranty terms improve evidence confidence.
Affiliate-neutral ranking
Commission status is recorded but never adds ranking points.
Watch this model
Save it to your shortlist to retain the current price snapshot and turn price and safety watches on or off.
Best current buying route
Sale price
$1,599
at EcoFlow · Verify stock
Seller options
1
1 with price
Offer rank
57/100
Relative to listed sellers
Data confidence
55%
4 open fields
Delivered totals
0/1
Shipping included
The only verified seller destination. Its listed price is known, but shipping and delivered cost still need confirmation.
Seller data checked Sep 15, 2026.
Shipping not yet verified.
Open fields: confirmed stock, delivered cost, return window, warranty term.
Prices, local stock, shipping, taxes, installation, and seller terms can change. Confirm the exact model and final checkout total before buying. Affiliate disclosure.
Seller comparison
One exact-model seller destination is currently verified. We show the unknown fields so a single listing is never presented as a broad market comparison.
EcoFlow
$1,599
Final total at checkout
55% data confidence · checked Sep 15, 2026
Price history
We preserve each dated seller observation instead of replacing the old number. Trends use the lowest verified listed price on each observation date—not an estimated market price.
EcoFlow
$1,599 · Verify stock
Ownership
Ownership is mostly about charge readiness, cable compatibility, storage conditions, and preserving battery health.
Ownership rule
Use the exact EcoFlow DELTA 3 Ultra Plus manual for maintenance intervals, fluids, storage limits, and warranty requirements. Similar models are not interchangeable.
Published warranty
5-Year Warranty. *Includes 3-year standard warranty and 2-year extended warranty available upon EcoFlow App registration
Coverage can vary by use, seller, and region. Confirm eligibility and exclusions before purchase.
Service information
2 official resources
An owner or operator manual is linked below for exact service intervals.
Battery care
Low mechanical upkeep
Plan for charge-state, cable, ventilation, firmware, and storage-temperature checks.
Handling & storage
1.3 lb · Rechargeable battery
Store dry and within the manufacturer’s published temperature and charge-state limits.
Practical care plan
Day one
Save the receipt, serial number, seller, warranty terms, and all included cables before packaging is discarded.
First setup
Use the official manual to verify every AC, vehicle, and solar input limit. Install firmware updates only through the manufacturer’s supported process.
Before a trip or outage
Inspect ports and cables, confirm state of charge, test the intended loads, and make sure the recharge plan still matches the forecasted need.
During storage
Follow the model manual for storage temperature, ventilation, recharge cadence, and recommended state of charge. Do not use generic battery advice in place of its limits.
Before you buy
Evidence
We separate sourced facts, reproducible calculations, editorial judgments, and missing evidence. That makes every important claim easier to inspect—and harder to overstate.
Published-data coverage
8 of 8 relevant evidence fields are documented for this model.
Source-backed editorial analysis—not a hands-on or laboratory test.
Source record
3 traceable sources
Last reviewed Sep 15, 2026
Hands-on testing
Checking ledger…
No manufacturer data is presented as an independent test
Verified owners
Checking reports…
Percentages stay hidden until the sample qualifies
CPSC screening
No model-text match
39 generator recall records screened
100%
Documented fields
3
Traceable sources
4
Reproducible calculations
0
Open evidence gaps
Published surge reserve
3,600W
7,200W peak − 3,600W running
100% above rated running output. This is arithmetic headroom, not a promise that every motor load will start.
Rated power density
2,769.23 running W/lb
3,600W ÷ 1.3 lb
A catalog-derived portability ratio. It does not account for handles, wheels, shape, or how the weight feels in use.
Listed dollars per Wh
$0.52/Wh
$1,599 ÷ 3,072Wh
A point-in-time catalog value ratio. It excludes tax, shipping, accessories, fuel, service, and battery expansion costs.
Strongest class-relative spec
93th percentile
Product weight: 1.3 lb ranked within 30 mid output power stations
Lighter than 93% of its class
Claim-by-claim evidence ledger
| Evidence type | Claim | Basis | Trace |
|---|---|---|---|
| Published factSource-backed | 3,600W running and 7,200W peak output are recorded for this model. | Model-specific output fields in the catalog. | Official model source |
| Published factSource-backed | 3,072Wh of published storage capacity is recorded. | Model-specific battery capacity in the catalog. | Official model source |
| Published factSource-backed | Rechargeable battery power and 1.3 lb product weight are recorded. | Published configuration and dimensional data. | Official model source |
| Original calculationReproducible | Published surge reserve: 3,600W. | 7,200W peak − 3,600W running | Calculation standard |
| Original calculationReproducible | Rated power density: 2,769.23 running W/lb. | 3,600W ÷ 1.3 lb | Calculation standard |
| Original calculationReproducible | Listed dollars per Wh: $0.52/Wh. | $1,599 ÷ 3,072Wh | Calculation standard |
| Editorial judgmentEditorial | Competitive in its class for home essentials & rv and camping. | Class score 58/100, declared best use, comparative specifications, and explicit buying cautions. | Inspect the score |
| Editorial judgmentEditorial | Usable runtime changes sharply with the load. Size your required watt-hours and recharge plan before buying. | Editorial risk check based on product category, weight, output, price availability, and missing fields. | Judgment standard |
Source ledger
What this evidence cannot prove
Editorial analysis for EcoFlow DELTA 3 Ultra Plus. Source record last verified Sep 15, 2026. Corrections can be submitted through the contact page with a model-specific source.
Ownership resources
Start with the exact EcoFlow DELTA 3 Ultra Plus model or item number. Accessory families can look alike while using different connectors, electrical limits, engines, or mounting points.
Compatible accessories
Shop EcoFlow solar panels, charging leads, and adapters intended for its portable-power ecosystem.
Review EcoFlow expansion batteries and required connection cables.
Protective and mobility accessories can make storage and transport easier.
Compatibility note: Links lead to manufacturer or official retailer resources. Confirm the full model or item number, connector type, voltage, amperage, and published compatibility list before buying. Installation involving a home panel, inlet, transfer switch, or fuel plumbing should be handled as required by local code.
Deeper analysis
The key decision is above. These supporting scorecards, owner signals, and evidence notes stay out of the way until you want to inspect them.
Find My Generator score
Competitive in its class
Compared with 30 mid output power stations in the current catalog.
Running and peak output versus the class
Stored energy versus the class
Lower weight scores higher
Rechargeable, indoor-safe operation
Output or stored energy per listed dollar
Class comparison
A number is more useful with context. Each row shows this model beside its class median and translates the difference into a percentile.
Running output
Higher than 40% of its class
Peak output
Higher than 64% of its class
Stored energy
Higher than 28% of its class
Product weight
Lighter than 93% of its class
How the score works: Scores use published specs and are relative to comparable products in this catalog. Missing specs are excluded and remaining weights are normalized. Runtime is the longest manufacturer-published figure and may use a different load or fuel than another model.
Starter Fit Score
Excellent fit
For a 3,000W target and a $1,500 budget.
Above your selected budget
Why it scored this way
This personal score is separate from the model’s class score. It measures fit against your priorities and gives neutral partial credit when price or noise data is missing.
Clears your 3,000W running target.
$99 above your selected budget.
Rechargeable battery works with your flexible fuel preference.
1.3 lb against your medium portability priority.
Battery operation strongly matches your quietness preference.
Home-backup fit rewards adequate output and fuel flexibility.
Testing protocol
This category-specific protocol defines the questions, equipment, conditions, outputs, and safety gates required for this exact model. Published specifications stay visibly separate from hands-on measurements.
Manufacturer-published baselines
Rated running output
3,600W
Peak / starting output
7,200W
Published storage capacity
3,072Wh
Product weight
1.3 lb
Published sound level
Not published
These numbers organize the test plan. They are not independent confirmations.
Model-specific test matrix
Planned measurement
How much of DELTA 3 Ultra Plus’s published storage reaches an AC load?
Charge using the manufacturer procedure, allow temperature stabilization, then discharge through a power analyzer at a fixed low load and again near 50% of rated AC output until normal automatic cutoff.
Planned measurement
Can the inverter sustain rated loads and respond predictably to short steps?
Apply a correctly rated programmable or resistive load at 25%, 50%, 75%, and 100% of rated output. Log watts, volts, frequency, temperature, fan behavior, faults, and automatic shutdown.
Planned measurement
How long and how much wall energy does a normal full recharge require?
From normal automatic discharge cutoff, recharge to the manufacturer-defined full state with the included AC method. Log input watts, input Wh, elapsed time, charge mode, and ambient temperature.
Planned measurement
When do fans become noticeable and how warm does the enclosure become?
At fixed loads, record A-weighted sound at 1 m and 7 m plus non-contact surface temperatures at defined enclosure points. Publish ambient sound and temperature.
Planned measurement
If backup transfer is advertised, what interruption does a representative load experience?
Only when the manufacturer advertises the feature, use an isolated, instrumented load and suitable waveform capture to record transfer interruption and output behavior during repeated loss-and-return events.
Controlled conditions
Required equipment class
Safety gate
Use a noncombustible, ventilated test area with battery-rated emergency procedures; stop for swelling, odor, smoke, leakage, abnormal heat, or impact damage.
Testing is for qualified personnel using correctly rated load equipment and the manufacturer’s required grounding, bonding, clearance, and protective-device instructions.
Never connect a generator directly to building wiring or bypass overload, temperature, battery, GFCI, or carbon-monoxide shutdown protection.
Stop a run for unstable voltage or frequency, overheating, fuel or electrolyte leakage, abnormal sound, damaged wiring, or any manufacturer fault indication.
Badge rule: this product receives no “FMG Tested” label or score benefit until a real unit, instruments, conditions, valid runs, raw records, and limitations are documented under the public protocol.
Verified owner reliability
Long-term reports from confirmed owners show starting, maintenance, failure, support, and recommendation outcomes for the EcoFlow DELTA 3 Ultra Plus.
See how ownership is verifiedVerified owners only
Reliability percentages stay hidden until at least 5 ownership-verified reports are published for this exact model — 5 more needed.
Purchase or registration evidence is reviewed privately.
Reports separate new ownership from 12+ month experience.
Repairs and maintenance are captured, not buried in a star.
Reports stay private while ownership and model details are checked. Contact information is never shown publicly.
Data trust & safety
We show when this record was verified, where its specifications came from, and whether its model number appears in the official CPSC generator-recall dataset.
Prices can change faster than technical specifications. Always confirm the current price, exact model number, and manual before purchase.
CPSC model screening