EcoFlow RIVER 3
- AC delivered · est.
208 Wh. Show source
estimated sourceus.ecoflow.com ↗2026-07-04- output
300 W. Show source
claimed sourceus.ecoflow.com ↗- surge
600 W. Show source
claimed sourceus.ecoflow.com ↗- weight
3.54 kg. Show source
claimed sourceus.ecoflow.com ↗- recharge
60 min. Show source
claimed sourceus.ecoflow.com ↗
Balanced
#5 of 14
in the Ultraportable / carry class
Lifted by Trust & reliability and Durability & longevity; held back by capacity & expansion.
Check current availability and pricing at the retailer.
Check price on AmazonSee alternatives to the EcoFlow RIVER 3 →At a glance
EcoFlow RIVER 3 is a ultraportable / carry model best suited to camper. It supplies 300 W of continuous AC output. BatteryRank scores it 55 out of 100 within its size class.
Our verdict on the EcoFlow RIVER 3
Everything about the RIVER 3 is decided by its 300 W continuous inverter, not by its 245 Wh pack. At this size the battery is rarely what runs out first — a load either fits under 300 W or it does not run at all, and that is a yes-or-no gate rather than a runtime question. Read the two NEMA outlets as sharing a single 300 W budget, and note that the pack is sealed at 245 Wh: there is no expansion port, so whatever you buy is the whole unit for its entire 3,000-cycle life.
- You want the smallest thing that still has a real wall outlet on itAt 3.54 kg and 254 x 211 x 112 mm it is a one-hand carry that still delivers pure sine wave AC through 2 sockets, which is a different category from a USB-only battery bank.
- Quiet operation matters more to you than headline outputIndependent reviewers have published a figure below 30 dB at 1.5 m for this unit — one of the few models in our catalog where a third party put a number on the noise rather than repeating the manufacturer claim.
- You are charging phones, laptops and a router through an outage, not appliancesThe single 100 W USB-C port plus 2 USB-A at 12 W cover that job directly, and a 60-minute 0-100% AC recharge means it turns around fast between grid windows.
- You think you might want more capacity laterThis model has no expansion port at all. The 245 Wh is permanent, so growing means replacing the unit rather than adding to it — a different kind of decision from a platform you can extend. The RIVER 3 Plus accepts one Extra Battery, taking it to 858 Wh.
- Anything you own draws near or above 300 WA 1,000 W kettle, a microwave or a hair dryer is not a marginal case here — it is 3x the continuous rating, and the 600 W surge ceiling is for motor start-up spikes, not for sustained draw. Its 1,200 W ceiling doubles the headroom for start-up spikes.
The honest limit: Compactness is the selling point and it is real, but it is bought with the inverter. EcoFlow markets the UPS mode for home appliances, and the switchover is genuinely under 20 ms — except that a 300 W budget excludes most of the appliances anyone would want to protect. The feature works; the capacity to use it on a fridge does not exist in this model.
What our data can’t tell you: We have no sourced battery voltage or amp-hour figure for this unit, which its own sibling does record, so we cannot cross-check the 245 Wh nameplate against cell-level arithmetic the way we prefer to. Its depth-of-discharge is also unsourced, so the usable figure we show equals the rated one rather than being independently derived.
BatteryRank Engineering Team · Last reviewed · Method
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.
245 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04The marketing number — total cell capacity.
208 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
- Fan noise
30 dB. Show source
verified source<30 dB @1.5m (The Gadgeteer, BikmanTech, BatterySkills)2026-07-04- AC charge time
60 min. Show source
verified source~60 min AC (OEM); reviewers confirm ~1 hr2026-07-04
<30 dB @1.5m (The Gadgeteer, BikmanTech, BatterySkills)
~60 min AC (OEM); reviewers confirm ~1 hr
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 2.9 nights | 9 W · |
| CPAP (heated humidifier on) | about 0.5 nights | 56 W · |
| Refrigerator (full-size) | about 3.3 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 12 hours | 18 W · |
| Laptop (65W charger) | about 6.4 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 10 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.
3.54 kg with 110 W solar input → carry-in, solar-rechargeable
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
Lightweight, 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
The BatteryRank score is computed from sourced data with a published formula — ranked by data, not lab testing. Seven sub-scores blend into a 0–100 composite, grouped into four buyer pillars. Price is deliberately not a scoring input: prices move daily, so value intelligence lives in the price section above, judged against this model's own history.
| 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 (a model is never penalized for a spec nobody in its class publishes), and any figure resting on a documented estimate is tagged est. A full methodology page is coming.
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
245 Wh. Show source
claimed sourceus.ecoflow.com ↗- Rated cycle life
3,000 cycles. Show source
claimed sourceus.ecoflow.com ↗- Battery chemistry
LiFePO4. Show source
claimed sourceus.ecoflow.com ↗- Rated capacity
245 Wh. Show source
claimed sourceus.ecoflow.com ↗- Cycle-life threshold
80 %. Show source
claimed sourceus.ecoflow.com ↗
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 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
300 W. Show source
claimed sourceus.ecoflow.com ↗- Surge power output
600 W. Show source
claimed sourceus.ecoflow.com ↗- AC outlets
2 outlets. Show source
claimed sourceus.ecoflow.com ↗- USB-A ports
2 ports. Show source
claimed sourceus.ecoflow.com ↗- USB-C ports
1 ports. Show source
claimed sourceus.ecoflow.com ↗- USB-C max output
100 W. Show source
claimed sourceus.ecoflow.com ↗- 12V car ports
1 ports. Show source
claimed sourceus.ecoflow.com ↗- DC barrel ports
0 ports. Show source
claimed sourceus.ecoflow.com ↗- Max combined output
300 W. Show source
claimed sourceus.ecoflow.com ↗
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 — what CPAPs and car fridges plug into for the most efficient overnight running.
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
- AC recharge speed
320 W. Show source
claimed sourceus.ecoflow.com ↗- AC charge time (0–100%)
60 min. Show source
claimed sourceus.ecoflow.com ↗- Max solar input
110 W. Show source
claimed sourceus.ecoflow.com ↗
How fast the unit recharges from a wall outlet — higher means shorter waits between uses.
How long a full recharge takes from a wall outlet, start to finish.
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
20 ms. Show source
claimed sourceus.ecoflow.com ↗
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
3.54 kg. Show source
claimed sourceus.ecoflow.com ↗
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.
- class-leading compactness (X-GaNPower, ~30% smaller) — Across reviewers ·
- very quiet (<30dB) — Across reviewers ·
- fast 1-hr recharge — Across reviewers ·
- efficient for sub-100W loads — Across reviewers ·
- IP54 battery protection — Across reviewers ·
- strong value ~$200 — Across reviewers ·
- 5-yr warranty — Across reviewers ·
- small 245Wh capacity — Across reviewers ·
- 300W continuous (needs X-Boost for 600W) — Across reviewers ·
- single USB-C — Across reviewers ·
- not expandable — Across reviewers ·
- base model connectivity limited vs Plus — Across reviewers ·
- Wirecutter: none (Wirecutter covers RIVER 2 Pro, not RIVER 3)
- Popular Mechanics: none
- covered by portable-power channels as a top compact/value pick — YouTube reviewers ·
- no single measured consensus captured — YouTube reviewers ·
Brand reputation: Popular 2024 compact unit; Amazon 4.5/835. Multiple multi-month hands-on reviews (PowerStationAdvisor 3mo, PortablePowerNerd 4mo) positive on reliability. NOTE brand-level: EcoFlow DELTA Max 2000 (EFD310) was recalled Oct 2025 for fire risk — different product line, but a brand safety signal
Sources: us.ecoflow.com/products/river-3-portable-power-station (full on-page Specs table + IP54 footnote) accessed 2026-07-04; amazon.com/dp/B0DB1S36YP accessed 2026-07-04; techradar.com review; backuppowerhub.com; powerstationadvisor.com; saferproducts.gov (EcoFlow) checked 2026-07-04
What else to consider instead of the EcoFlow RIVER 3
Same or adjacent size class, ordered by the price-independent composite. Every alternative is better than the EcoFlow RIVER 3 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.
- Goal Zero Yeti 300score 71 · same size class
- Why you would switch
- The Goal Zero Yeti 300 delivers 21% more usable AC energy (252 Wh vs 208 Wh).
- What you give up
- The EcoFlow RIVER 3 is 43% lighter (3.54 kg vs 6.2 kg).
- EcoFlow RIVER 3 Plusscore 65 · same size class
- Why you would switch
- The EcoFlow RIVER 3 Plus delivers 17% more usable AC energy (243 Wh vs 208 Wh).
- What you give up
- The EcoFlow RIVER 3 is 25% lighter (3.54 kg vs 4.72 kg).
- Bluetti Elite 30 V2score 63 · same size class
- Why you would switch
- The Bluetti Elite 30 V2 delivers 18% more usable AC energy (245 Wh vs 208 Wh).
- What you give up
- The EcoFlow RIVER 3 is 18% lighter (3.54 kg vs 4.3 kg).
- Anker SOLIX C300score 62 · same size class
- Why you would switch
- The Anker SOLIX C300 delivers 29% more usable AC energy (269 Wh vs 208 Wh).
- What you give up
- The EcoFlow RIVER 3 is 14% lighter (3.54 kg vs 4.1 kg).
- Jackery Explorer 300score 54 · same size class
- Why you would switch
- The Jackery Explorer 300 delivers 19% more usable AC energy (248 Wh vs 208 Wh).
- What you give up
- The EcoFlow RIVER 3 carries 5 years of warranty against 2.
Quick answers
Each answer restates a sourced figure from elsewhere on this page — nothing new, nothing guessed.
- How much does the EcoFlow RIVER 3 weigh?
- 3.54 kg (7.8 lb), manufacturer-claimed, without accessories.
- What are the dimensions of the EcoFlow RIVER 3?
- 254 × 211 × 112 mm (10 × 8.3 × 4.4 in), length × width × height, manufacturer-claimed.
- How much capacity does the EcoFlow RIVER 3 deliver through an AC outlet?
- About 208 Wh of the rated 245 Wh reaches an AC outlet from a full charge — an estimate after our published 15% inverter-loss constant (marked est. on this page).
- How long does the EcoFlow RIVER 3 take to charge?
- 1 h from a wall outlet, 0 to 100%, manufacturer-claimed. Fast-charge modes and solar input differ — see the charging specs on this page.
- How many watts can the EcoFlow RIVER 3 output?
- 300 W continuous AC output and 600 W surge output, manufacturer-claimed. Appliance startup demand must stay within the relevant limit.
- How much solar input can the EcoFlow RIVER 3 accept?
- 110 W maximum solar input, manufacturer-claimed. Actual harvest depends on panel compatibility, sun, orientation, temperature, and conversion losses.
- What is the cycle-life rating of the EcoFlow RIVER 3?
- 3,000 cycles to 80% remaining capacity, manufacturer-claimed. A cycle rating is not a calendar-life guarantee.
- Can the EcoFlow RIVER 3 work as a UPS?
- Its manufacturer-claimed transfer time is 20 ms. Confirm that your connected equipment tolerates that transfer time; this is not the same as a zero-transfer online UPS.