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EcoFlow · Power station · RIVER 3 Max

RIVER 3 Max

- <10 ms pro-grade UPS for precision devices . - 600W rated output and 1200W X-Boost . - Up to 2× runtime for light-wattage appliances . - Expandable up to 858Wh with a wire-free connection . - Compact and lightweight . - 1-hr fast charging, no battery damage . - Up to 220W fast solar charging . - <30 dB whisper quiet for 24/7 use . . . . .

600W rated572WhRechargeable batteryListed available
Check EcoFlow price Official listed price $499.00
RIVER 3 Max (RIVER 3 Plus + Extra Battery 300)
Product image · EcoFlow

Product decision summary

Researched by · reviewed under the FMG editorial standard · Sep 15, 2026

Trace the evidence · not a hands-on review

Bottom line

Best for specific needs for camping and travel & electronics and small appliances.

Best for: Camping and travel & Electronics and small appliances

Running output

600W

Fuel / power

Rechargeable battery

Weight

10.4 lb

Strongest reasons

  • - <10 ms pro-grade UPS for precision devices . - 600W rated output and 1200W X-Boost . - Up to 2× runtime for light-wattage appliances . - Expandable up to 858Wh with a wire-free connection . - Compact and lightweight . - 1-hr fast charging, no battery damage . - Up to 220W fast solar charging . - <30 dB whisper quiet for 24/7 use . . . . .
  • Product weight is lighter than 77% of its class.
  • Battery power avoids exhaust at the point of use.

Know before buying

Its compact output is best for prioritized essentials, not several large home loads running at once.

Best current buying route

$499

Observed 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.

Check price & availability

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 & manuals

Key specifications

The numbers that drive the decision.

Published values stay labeled, and every usable metric includes class context. Missing data is shown instead of estimated.

Open complete specifications
SpecificationThis model
Running output600WHigher than 31% of its class
Peak / starting output1,200WHigher than 36% of its class
Stored energy572WhHigher than 34% of its class
Product weight10.4 lbLighter than 77% of its class
Published sound levelNot publishedNo class comparison available
Fuel / power sourceRechargeable batteryPower station
Best current price$499Observed price at EcoFlow

Class comparisons use 101 compact power stations. Runtime figures can use different loads, fuels, or test conditions; confirm the model manual before planning fuel or battery duration.

Product gallery & complete specifications Official imagery, full spec tables, use cases, and source linksView details

Infographic gallery

Output, stored energy, charging, and portability.

01 · Usable output

600W rated output

Battery600W / 1,200W

The comparison uses EcoFlow’s published rated and peak, surge, or maximum output figures.

02 · Energy & runtime

Listed capacity

572Wh

Published runtime guidance

Runtime depends on stored capacity and connected load

03 · Size & construction

10.4 lb

Listed weight

9.2×9.1×5.8 in

Dimensions

Battery or engine
LiFePO4, 3000 cycles to 80% capacity battery system
Warranty
See official warranty terms
04 · Charging & continuity

Charging or integration

AC Input: 100~120V, 10A Max, 50/60Hz, 380W 0-100% in 60 min; Solar Input: 220W, 0-100% in as fast as 1.5 hr; Car Input: 220W, 11~55V, 0-100% in 3.3 hr; Generator Input: 100~120V, 10A Max, 50/60Hz, 380W 0-100% in 60 min

Backup transfer

<10 ms

Noise

<30 dB

Official product gallery

Product views and factory feature graphics.

The current official image set for RIVER 3 Max includes product views, connection diagrams, feature explanations, and compatible system configurations where EcoFlow publishes them.

EcoFlow US Standalone EcoFlow RIVER 3 Plus Portable Power Station
Published by EcoFlow · image 1 of 8
RIVER 3 Max official EcoFlow image 2
Published by EcoFlow · image 2 of 8
RIVER 3 Max official EcoFlow image 3
Published by EcoFlow · image 3 of 8
RIVER 3 Max official EcoFlow image 4
Published by EcoFlow · image 4 of 8
RIVER 3 Max official EcoFlow image 5
Published by EcoFlow · image 5 of 8
RIVER 3 Max official EcoFlow image 6
Published by EcoFlow · image 6 of 8
RIVER 3 Max official EcoFlow image 7
Published by EcoFlow · image 7 of 8
RIVER 3 Max official EcoFlow image 8
Published by EcoFlow · image 8 of 8

Complete specifications

The complete factory data available for comparison.

These pages retain EcoFlow's model-specific output, charging, battery, port, continuity, dimensions, environmental, engine, fuel, app-control, and warranty fields where published.

Follow charging, storage, and installation guidance. Whole-home connections and transfer equipment should be installed according to EcoFlow instructions and applicable electrical codes.

Comparison summary

Battery output
600W rated / 1,200W peak or maximum
Stored energy
572Wh
Energy source
Rechargeable battery
Dimensions
9.2×9.1×5.8 in
Listed weight
10.4 lb
Price and availability
$499.00 official listed price; available from EcoFlow

Factory output & connection specifications

Capacity
286Wh
AC Output
3 outlets, 600W total (Surge 1200W, X-Boost 1200W)
USB-A Output
2 ports, 5V=2.4A, 12W max per port, total 24W
USB-C Output
1 port, 5/9/12/15⎓3A Max, 20V⎓5A Max,100W Max
AC Input
100~120V, 10A Max, 50/60Hz, 380W 0-100% in 60 min

Factory charging & battery specifications

Battery Chemistry
LiFePO4, 3000 cycles to 80% capacity
Solar Input
220W, 0-100% in as fast as 1.5 hr
Car Input
220W, 11~55V, 0-100% in 3.3 hr
Generator Input
100~120V, 10A Max, 50/60Hz, 380W 0-100% in 60 min
Charge Temperature
32°F-113°F
Discharge Temperature
14°F-113°F

Factory engine, fuel & runtime specifications

Noise
<30 dB

Factory dimensions & operating specifications

Dimensions
9.2×9.1×5.8 in
Net Weight
10.4 lb
Optimal Operating Temperature
68°F-86°F
Storage Temperature
68°F-86°F

Factory ownership, control & protection specifications

UPS
<10 ms

Official feature details

System capability

- <10 ms pro-grade UPS for precision devices .

Power and expansion

- 600W rated output and 1200W X-Boost .

Charging flexibility

- Up to 2× runtime for light-wattage appliances .

Battery and durability

- Expandable up to 858Wh with a wire-free connection .

Controls and continuity

- 1-hr fast charging, no battery damage .

Portability detail

- <30 dB whisper quiet for 24/7 use .

Best-fit uses

  • Camping and travel
  • Electronics and small appliances
  • Medical-device continuity planning
  • Short outages

Standout features

  • 600W rated output
  • 1,200W peak or surge output
  • 572Wh listed capacity
  • LiFePO4, 3000 cycles to 80% capacity

Match capacity and output to your actual loads.

Use the independent calculator before choosing a battery system or generator.

Check my power plan
Sources: EcoFlow RIVER 3 MaxEcoFlow productsVerified September 15, 2026

Price & Availability

Compare the whole buying route.

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

EcoFlow RIVER 3 Max

Review soon

Observed price

$499

at EcoFlow · Verify stock

Verify offer

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

Every verified exact-model destination.

Browse all priced models

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

Best overallLowest listed
Review soon

$499

Final total at checkout

Availability
Verify stock
Shipping
Shipping not yet verified
Returns
Not verified
Warranty
Not verified
Verify seller

55% data confidence · checked Sep 15, 2026

Price history

A durable record, starting with verified snapshots.

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

$499 · Verify stock

Verify offer

Ownership

What living with it looks like.

Ownership is mostly about charge readiness, cable compatibility, storage conditions, and preserving battery health.

Ownership rule

Use the exact EcoFlow RIVER 3 Max manual for maintenance intervals, fluids, storage limits, and warranty requirements. Similar models are not interchangeable.

Open owner’s manual Manufacturer support

Published warranty

See official warranty terms

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

10.4 lb · Rechargeable battery

Store dry and within the manufacturer’s published temperature and charge-state limits.

Practical care plan

From delivery to long-term readiness

  1. 1

    Day one

    Register and record the exact unit

    Save the receipt, serial number, seller, warranty terms, and all included cables before packaging is discarded.

  2. 2

    First setup

    Confirm charging limits and update status

    Use the official manual to verify every AC, vehicle, and solar input limit. Install firmware updates only through the manufacturer’s supported process.

  3. 3

    Before a trip or outage

    Run a readiness check

    Inspect ports and cables, confirm state of charge, test the intended loads, and make sure the recharge plan still matches the forecasted need.

  4. 4

    During storage

    Protect long-term battery health

    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

Five ownership questions to settle first

  • Confirm that See official warranty terms applies to your seller, region, and intended use.
  • Open the official manual for RIVER 3 Max and review setup, service intervals, warnings, and storage requirements.
  • Verify access to EcoFlow parts, authorized service, and a practical return path in your area.
  • Confirm every charging cable, solar input limit, expansion-battery match, and indoor-use restriction.
  • Confirm the unit, fuel or charging gear, and essential cords fit the intended storage and transport space.
Manuals and compatible accessories Compare seller protections

Evidence

See the proof behind the conclusion.

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

100%documented

8 of 8 relevant evidence fields are documented for this model.

Source-backed editorial analysis—not a hands-on or laboratory test.

Read our evidence standard Explore original market research

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

Original calculation

Published surge reserve

600W

1,200W peak − 600W running

100% above rated running output. This is arithmetic headroom, not a promise that every motor load will start.

Original calculation

Rated power density

57.69 running W/lb

600W ÷ 10.4 lb

A catalog-derived portability ratio. It does not account for handles, wheels, shape, or how the weight feels in use.

Original calculation

Listed dollars per Wh

$0.87/Wh

$499 ÷ 572Wh

A point-in-time catalog value ratio. It excludes tax, shipping, accessories, fuel, service, and battery expansion costs.

Original calculation

Strongest class-relative spec

77th percentile

Product weight: 10.4 lb ranked within 101 compact power stations

Lighter than 77% of its class

Claim-by-claim evidence ledger

Evidence typeClaimBasisTrace
Published factSource-backed600W running and 1,200W peak output are recorded for this model.Model-specific output fields in the catalog.Official model source
Published factSource-backed572Wh of published storage capacity is recorded.Model-specific battery capacity in the catalog.Official model source
Published factSource-backedRechargeable battery power and 10.4 lb product weight are recorded.Published configuration and dimensional data.Official model source
Original calculationReproduciblePublished surge reserve: 600W.1,200W peak − 600W runningCalculation standard
Original calculationReproducibleRated power density: 57.69 running W/lb.600W ÷ 10.4 lbCalculation standard
Original calculationReproducibleListed dollars per Wh: $0.87/Wh.$499 ÷ 572WhCalculation standard
Editorial judgmentEditorialBest for specific needs for camping and travel & electronics and small appliances.Class score 46/100, declared best use, comparative specifications, and explicit buying cautions.Inspect the score
Editorial judgmentEditorialIts compact output is best for prioritized essentials, not several large home loads running at once.Editorial risk check based on product category, weight, output, price availability, and missing fields.Judgment standard

What this evidence cannot prove

  • No Find My Generator hands-on test, instrumented load test, teardown, or long-term ownership trial is claimed for this page.
  • Manufacturer specifications may use different fuels, loads, test distances, temperatures, or operating modes. Cross-brand comparisons inherit those differences.
  • The listed price is a dated snapshot and may not equal the current delivered price.

Editorial analysis for EcoFlow RIVER 3 Max. Source record last verified Sep 15, 2026. Corrections can be submitted through the contact page with a model-specific source.

Ownership resources

Accessories, manuals, and documents.

Start with the exact EcoFlow RIVER 3 Max model or item number. Accessory families can look alike while using different connectors, electrical limits, engines, or mounting points.

Compatible accessories

Match by model and connection.

Verify exact fit

Solar charging equipment

Shop EcoFlow solar panels, charging leads, and adapters intended for its portable-power ecosystem.

Match the connector, solar input voltage, current limit, and maximum input published for RIVER 3 Max.
View official accessory options
Verify exact fit

Expansion battery

Review EcoFlow expansion batteries and required connection cables.

Use only an expansion battery that EcoFlow explicitly lists for RIVER 3 Max; similar-looking ports do not establish compatibility.
View official accessory options
Verify exact fit

Case, cart, or protective cover

Protective and mobility accessories can make storage and transport easier.

Check the listed dimensions and model fit for RIVER 3 Max; do not block cooling inlets or exhaust fans during operation.
View official accessory options

Manuals & PDFs

Official product materials.

Manuals and document lookupSupport pageSearch EcoFlow support materials using the complete model, item, or serial number.Official product pageProduct pageCurrent manufacturer overview, notices, specifications, downloads, and support links.

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

Open the details you need

The key decision is above. These supporting scorecards, owner signals, and evidence notes stay out of the way until you want to inspect them.

Fit and score detailsSee the class benchmarks and personalize the fit score for your needs.

Find My Generator score

46/ 100

Best for specific needs

Compared with 101 compact power stations in the current catalog.

Power34

Running and peak output versus the class

Endurance34

Stored energy versus the class

Portability77

Lower weight scores higher

Fuel flexibility85

Rechargeable, indoor-safe operation

Value26

Output or stored energy per listed dollar

Class comparison

See what each spec really means.

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 31% of its class

This model · 600W
Median · 1,350W

Peak output

Higher than 36% of its class

This model · 1,200W
Median · 2,400W

Stored energy

Higher than 34% of its class

This model · 572Wh
Median · 1,008Wh

Product weight

Lighter than 77% of its class

This model · 10.4 lb
Median · 25.3 lb

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.

Size a generator for your own appliances

Starter Fit Score

66/ 100

Possible fit

For a 3,000W target and a $1,500 budget.

Below your running-watt target

Why it scored this way

A score you can inspect and change.

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.

Power fit

5.9/35

2,400W below your running target.

Budget fit

20/20

$499 is within your budget.

Fuel fit

15/15

Rechargeable battery works with your flexible fuel preference.

Portability

10/10

10.4 lb against your medium portability priority.

Noise fit

10/10

Battery operation strongly matches your quietness preference.

Use-case fit

5.5/10

Home-backup fit rewards adequate output and fuel flexibility.

Tune my profile
Testing, reviews and evidenceCheck hands-on testing status, owner reliability signals, sources, and data confidence.
Checking the hands-on test ledger…

Testing protocol

The methods behind every result.

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.

Open the hands-on test ledger Read the full test protocol Download measurement worksheet

Manufacturer-published baselines

Rated running output

600W

Published

Peak / starting output

1,200W

Published

Published storage capacity

572Wh

Published

Product weight

10.4 lb

Published

Published sound level

Not published

Not published

These numbers organize the test plan. They are not independent confirmations.

Model-specific test matrix

Questions the measurements must answer.

01

Planned measurement

Usable AC energy

Pending

How much of RIVER 3 Max’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.

Delivered WhUsable-capacity percentageTest loadCutoff state
02

Planned measurement

Continuous output & overload behavior

Pending

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.

Sustained wattsVoltage and frequencyThermal behaviorProtection response
03

Planned measurement

AC recharge time & input energy

Pending

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.

0–100% timeInput WhPeak input wattsCharge mode
04

Planned measurement

Fan sound & thermal profile

Pending

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.

dBA by loadFan-on thresholdSurface temperatureAmbient conditions
05

Planned measurement

Transfer / UPS behavior

Pending

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.

Transfer timeWaveform eventLoad typePass-through limits

Controlled conditions

  • Record the exact model, serial number, firmware, sample source, and test date before any measurement.
  • Log ambient temperature, humidity, elevation, wind, surface, and background sound for every test block.
  • Record instrument model, range, accuracy, and most recent calibration or verification date.
  • Repeat timing, starting, and sound measurements three times when conditions allow; publish every valid run.
  • Keep original notes, load logs, meter exports, photos, and any excluded-run explanation with the result.

Required equipment class

  • Rated programmable or resistive AC load
  • Bidirectional watt-hour and power analyzer
  • Calibrated sound-level meter
  • Temperature logger or verified non-contact thermometer
  • Waveform capture equipment when transfer-time claims are tested

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

What happens after the honeymoon period?

Long-term reports from confirmed owners show starting, maintenance, failure, support, and recommendation outcomes for the EcoFlow RIVER 3 Max.

See how ownership is verified

Verified owners only

Be the first confirmed owner to report back.

Checking reports…

Reliability percentages stay hidden until at least 5 ownership-verified reports are published for this exact model — 5 more needed.

Ownership checked

Purchase or registration evidence is reviewed privately.

Time in service

Reports separate new ownership from 12+ month experience.

Failures documented

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

Fresh specifications. Visible recall checks.

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.

Review soon

Specification freshness

Last verified
Sep 15, 2026
Review target
Oct 15, 2026
Primary source
Manufacturer / official listing

Prices can change faster than technical specifications. Always confirm the current price, exact model number, and manual before purchase.

CPSC model screening

No model-number match found

39 records checked
The EcoFlow RIVER 3 Max model text did not match the generator recall records in our current CPSC snapshot. This is a screening result, not a guarantee or safety certification. Recalls can be serial-number specific, newly published, or use a different product description.
Search CPSC directly Dataset checked Sep 16, 2026

Research owner

Founder & lead researcher

Editorial sign-off

Find My Generator Editorial Review

Accountable editor: Andrew Petla

Review scope: exact model identity, published specifications, calculation inputs, source quality, safety language, and affiliate independence. This is an internal editorial review, not third-party engineering, electrical, or safety certification. Hands-on testing is claimed only when a complete test record is published.Request a correction.
Read the full data methodology

Related actions

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