Head-to-head test
EcoFlow RIVER 3 vs Anker SOLIX C1000 Gen 2
EcoFlow has stopped selling the RIVER 3, so the only live question left on this page is whether you needed a 1,024Wh box or a 7.8 lb one, and if it's the second, the answer isn't either unit here.
Full profiles: EcoFlow RIVER 3 → · Anker SOLIX C1000 Gen 2 →
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
Spec deltas
EcoFlow has dropped the base RIVER 3 from its store, so one half of this comparison can't be bought. That's not a footnote to work around, it's the headline: the page still gets read because people own these, find them on retailer shelves, and want to know what they're holding. The specs below are all still true. The recommendation has exactly one candidate.
The candidate is a much bigger machine. The SOLIX C1000 Gen 2 carries 1,024Wh to the RIVER 3's 245Wh and runs a 2,000W inverter against a 300W one, which is a bit over four times the battery and nearly seven times the output. Across the seven load profiles this site runs, the RIVER 3 doesn't win a single row outright. Its best result is a shared one: a 100Wh afternoon of phones and a speaker, which both units cover and one of them barely notices.
That shared row is the useful part of this page. It's the proof that these two were never really rivals, just two different sizes of box, and that the person cross-shopping them is deciding a class, not a brand. If the class you want is the small one, the RIVER 3 PLUS is the model EcoFlow still sells in that shape. If the class you want runs a workday, stop reading and buy the Anker.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
solar input
The wall route says the same thing louder, with a full recharge clocked at about 49 minutesB1. So the C1000 Gen 2 comes back from empty quicker by either path while holding more than four times the energy, and the RIVER 3 never collects the reward people expect from a small battery, which is a fast top-up between uses. Its pack is small and its intake is small in the same proportion.
RIVER 3: 245Wh capacity, 110W maximum solar inputSOLIX C1000 Gen 2: 1,024Wh capacity, 600W maximum solar inputReviewers time the C1000 Gen 2's HyperFlash wall recharge at roughly 49 minutesB1
Why it mattersAnyone assuming the little box is the one you can refill over lunch should be reading the input rating, not the capacity.
continuous output
Motors draw watts at switch-on, not multiples of someone's rating, so the 2x cushion isn't a strength, it's what a 300W inverter needs to get anything moving. On the tailgate row it does exactly that and no more: the 400W blender spins up on surge, then the 300W continuous rating takes over. A start you can't finish is worse than a refusal, because the refusal happens before you've poured anything in.
RIVER 3: 300W continuous, 600W surge, a 2x cushionSOLIX C1000 Gen 2: 2,000W continuous, 3,000W surge, a 1.5x cushionTailgate Party profile: a 400W peak, which the RIVER 3 starts and cannot hold
Why it mattersShop the surge number against the thing you're plugging in, and treat a high surge ratio on a small inverter as a description of the inverter, not a feature.
Put the weights beside that and the shape of the decision changes: 7.8 lb against 24.9 lb is a bit over three times the carry, and it's the only axis on this page where the discontinued unit is ahead. The reader who wanted the 48%-used afternoon box wanted a specific thing, and buying 1,024Wh to get it means hauling 24.9 lb to move 100Wh. The live unit in that shape is the RIVER 3 PLUS.
Four of the seven load profiles come back 'neither': Weekend Camping, 8-Hour Blackout, Remote Workday, Van Life DailyThe C1000 Gen 2 misses the 910Wh Remote Workday by 40Wh; the RIVER 3 misses it by 702WhAfternoon Off-Grid is 100Wh, and the RIVER 3 finishes it at 48% used against the C1000 Gen 2's 11%
Why it mattersWhoever came here for something light should go shop the successor; whoever came here for a box that runs a workday should buy the Anker and close the tab.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: Four of the seven load profiles come back 'neither', and the only row both units clear is a 100Wh afternoon, which is the fastest way to see what size each of these really is.
Two units, seven profiles, and the RIVER 3 wins none of them alone. It clears the 100Wh afternoon, shares that row, and after that the numbers go one way: 112Wh short on the CPAP night, 462Wh short at the tailgate, 702Wh short of a workday, 1,437Wh short of an eight-hour blackout. Those gaps are measured against 208Wh of usable energy, the flat 85% derate this site applies to every unit's nameplate, and they are not close calls.
The C1000 Gen 2's row is more interesting than a clean sweep, because it loses four of them too. It covers 53% of the blackout profile and 41% of a camping weekend, and it comes 40Wh short of the 910Wh workday, which is a trimmed appliance or a slightly shorter evening rather than a failure. Read the two columns together and the honest summary is that one of these is a daypack battery and the other is a one-day battery. Neither is a house.
Portability & Form Factor
Selected because: 7.8 lb against 24.9 lb is why anyone cross-shops these two, and it's the single axis where the discontinued unit still wins.
weight
7.8 lb is a one-hand lift you do without thinking about it, the way you pick up a full grocery bag. 24.9 lb is the other kind: two hands, a set-down spot chosen in advance, and a decision about whether it's coming on the hike. That gap is a bit over three times, and it's the reason these two ever appeared in the same search box.
It's also the one comparison on this page the retired unit still wins, which is exactly why the C1000 Gen 2 winning the page doesn't settle anybody's afternoon. The six AC outlets on the Anker against the RIVER 3's two tell you what it's for: it's the box that feeds a table, not the one that rides in a pannier. If what you wanted was the pannier box, the answer is a different EcoFlow, and it's the RIVER 3 PLUS.
What the Specs Don't Tell You
Selected because: Surge, UPS class and expansion all fire here, and the surge card is the one people read backwards: the taller ratio belongs to the smaller inverter.
rated cycles
The surge card is the one worth slowing down for, because the flattering number belongs to the weaker unit. The RIVER 3 holds a 2x cushion over its own rating and the C1000 Gen 2 only 1.5x, but 2x of 300W is 600W, while 1.5x of 2,000W leaves 1,000W of momentary room above the rating alone. A compressor doesn't know either ratio. It draws its watts and the inverter either swallows them or trips.
The rest of the cards are quieter. Both units list a UPS mode, rated at no worse than 10ms on the Anker and no worse than 20ms on the RIVER 3, which are published ceilings rather than measured switchovers; if there's a desktop with unsaved work on the other end, the stated class is worth the attention. And the RIVER 3's sealed 245Wh ceiling, which used to be a live trade-off you weighed at purchase, is now just a description of a unit you'd be buying from remaining stock.
Growth Path
Selected because: One of these is sealed at 245Wh and no longer sold; the other starts at 1,024Wh and takes expansion batteries, which buys hours rather than a bigger class of job.
solar input
The C1000 Gen 2 takes Anker expansion batteries and the RIVER 3 takes nothing, but the expansion port isn't the real gap between them. The real gap is the 1,024Wh the Anker starts with. Expansion is the step after that, and at this size it buys longer runs on the same 2,000W inverter rather than a different category of job. More hours, not more house.
For the RIVER 3 the growth question has been answered from outside. It was sealed at 245Wh by design, and now it's sealed at 245Wh and out of production, which means the upgrade path for an owner is a second unit from a different generation. That's worth knowing before you go hunting for clearance stock: what you find is the ceiling, permanently.
Strengths & trade-offs
EcoFlow RIVER 3
Strengths
- +Lighter by 17.1 lb
Trade-offs
- –Weaker inverter (-1,700W) limits appliance compatibility.
- –Sealed capacity — the SOLIX C1000 Gen 2 can add batteries to grow past 245Wh; this one can't.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the SOLIX C1000 Gen 2's 4,000, so it wears out sooner.
Anker SOLIX C1000 Gen 2
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Significantly heavier (+17.1 lbs), making it harder to move.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on seven real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
Neither unit
Neither unit covers this scenario's 2,100Wh: the RIVER 3 comes up 1,892Wh short (about 10% covered), the SOLIX C1000 Gen 2 1,230Wh (41%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
Neither unit
Neither unit covers this scenario's 1,645Wh: the RIVER 3 comes up 1,437Wh short (about 13% covered), the SOLIX C1000 Gen 2 775Wh (53%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
Battery budget usedlower = more headroom
LOAD Fridge 150W×8h · Router + Modem 20W×8h · LED Lights (4 bulbs) 40W×6h · Phone Charger 15W×3h
SCN-03 · 8 hours · needs 320Wh
CPAP Overnight
Sleep therapy without interruption — the #1 medical use case
SOLIX C1000 Gen 2
320Wh is what a night on the machine costs, and the C1000 Gen 2 ends it with 550Wh still in the tank, which is the difference between using a battery and watching one. The RIVER 3 has 208Wh usable and covers about 65% of the night, so it gets you roughly two thirds of the way and then quits in the dark. There's no clever way to stretch that last 112Wh at 3 a.m.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
Neither unit
This scenario needs 910Wh and neither unit quite finishes it. The SOLIX C1000 Gen 2 lands within 5% of it — close enough that trimming one appliance, or accepting a shorter evening, gets you there on the day.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
SOLIX C1000 Gen 2
The 400W blender is the whole story here. The RIVER 3 can start it, because 600W of surge is enough to break the motor loose, and then the 300W continuous rating takes over and the party has a problem. The C1000 Gen 2 clears the 670Wh this profile needs with 200Wh spare and six AC outlets to spread it across, which is what feeding a folding table actually looks like.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Neither unit
Neither unit covers this scenario's 4,685Wh: the RIVER 3 comes up 4,477Wh short (about 4% covered), the SOLIX C1000 Gen 2 3,815Wh (19%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
SCN-07 · an afternoon · needs 100Wh
Afternoon Off-Grid
Phones and a speaker at the park, beach, or campsite — the small-unit job description
Either unit
Phones and a speaker across an afternoon, 100Wh all in, and both units finish it: the RIVER 3 at 48% used, the C1000 Gen 2 at 11% and barely aware anything is plugged in. That's the tell. This job wants the small box, and moving 24.9 lb to deliver 100Wh is a lot of carrying for nothing. The catch is that the small box here is the one that's been discontinued, so if this row is your actual life, the unit to go shop is the RIVER 3 PLUS rather than either column above.
Battery budget usedlower = more headroom
LOAD Phone Charger (×2) 30W×2h · Bluetooth Speaker 10W×4h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: SOLIX C1000 Gen 2 runs 4.2h vs 1h.
$529.99 list · direct from Anker
Planning for more than this? Describe your whole setup and get it sized →
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–58hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–11.6hHigh-Draw Appliances
These reveal the real limitsscale 0–0.9h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
September 19, 2026
Verdict: the SOLIX C1000 Gen 2, on Power Score margin
The Anker SOLIX C1000 Gen 2 is the only one of these two you can still buy, and it also happens to be the stronger box: 1,024Wh against 245Wh, 2,000W of continuous output against 300W, and 4,000 rated cycles against 3,000. EcoFlow has dropped the base RIVER 3 from its store, so at $530 the C1000 Gen 2 wins by walkover and then keeps winning on the rows that matter, taking the CPAP night and the tailgate outright while the RIVER 3 takes none of the seven on its own. But read the verdict narrowly. It says the C1000 Gen 2 beats the RIVER 3; it does not say a 24.9 lb station is what you came for. If you were shopping the RIVER 3 because it weighs 7.8 lb and disappears into a trunk, the live answer to that want is the RIVER 3 PLUS, and buying four times the battery to avoid the search is the wrong trade.
Today the SOLIX C1000 Gen 2 is $499.99, $30 under its typical $529.99. The verdict weighs typical prices, not today's. Prices checked 28 days ago.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of September 19, 2026. The links below open Anker's current price.
$499.99 · direct from Anker
down from $530 · 6% below usual
Last checked 28 days ago. Prices move — check before you buy.
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated September 19, 2026
Black Friday · 26 days out
Price to beat:SOLIX C1000 Gen 2 $450
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): RV Living, Home Backup, Solar Generator, Food Truck.
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews — see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, RIVER 3 rates 4.1/5 (50th percentile of 25 Personal-class units), and SOLIX C1000 Gen 2 rates 4.9/5 (96th percentile of 27 Everyday-class units).
How the class ranking is computed →Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
Fixed at 245Wh, and the Expansion Opposite Isn't What It Sounds Like
The RIVER 3 is sealed at 245Wh, which was a fair trade when it was the box you bought for a 100Wh afternoon. The SOLIX C1000 Gen 2 takes Anker expansion batteries, but be clear about what that buys: a longer run behind the same 2,000W inverter, not a bigger class of job. More hours, not more house. Its real advantage over the RIVER 3 was never the expansion port, it's the 1,024Wh it starts with.
Surge Power: Ratio and Ceiling Disagree
The RIVER 3 holds the higher surge-to-continuous ratio (2× vs 1.5×), but the SOLIX C1000 Gen 2 holds the higher absolute surge ceiling — 3,000W against 600W. These measure different things. The ratio says how much headroom an inverter keeps above its own rating; the ceiling says how big a startup spike it can actually swallow. A motor draws a number of watts at switch-on, not a multiple of someone else's rating, so on raw starting ability the SOLIX C1000 Gen 2 is the stronger unit here — while the RIVER 3 is the one running further below its own limit at steady state.
UPS Switchover: ≤10ms vs ≤20ms
Both list a UPS mode, at different rated speeds. The SOLIX C1000 Gen 2 is rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. The RIVER 3 is rated ≤20ms — fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. If a computer with unsaved work is the thing being protected, the stated class is worth the attention; nothing here is a lab result.
Warranty: Five Years Each, Only One Clock Worth Starting
Both records carry a five-year term, so coverage isn't a tiebreaker on paper. What sits behind the term is the difference. EcoFlow offers no parts or service once a warranty window has closed, and the RIVER 3 has left the range, so a unit bought from remaining stock has five years and then no next step. The SOLIX C1000 Gen 2's five years cover a model Anker is still shipping and still supporting, which is a different kind of five years even though the number is identical.
Battery Lifespan in Real Years
The SOLIX C1000 Gen 2 is rated for 4,000 cycles vs 3,000. In real life: at daily use, that's 11 vs 8.2 years. At weekend use (twice a week), it's 38 vs 29 years. One caution reading years across different sizes: a cycle is 1,024Wh on the SOLIX C1000 Gen 2 and 245Wh on the RIVER 3, so count lifetime energy — roughly 4,096 kWh against 735 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
Full record above — the Test Desk pick is the SOLIX C1000 Gen 2.
Check SOLIX C1000 Gen 2 price →Ownership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
The RIVER 3 is no longer sold, so there is no price to work its cost per kWh from, and this comparison doesn't quote one. On what you can actually buy today, the SOLIX C1000 Gen 2 works out at $0.13/kWh over its rated life. If you already own the RIVER 3, the hardware comparison still holds: over its rated life the RIVER 3 delivers about 735 kWh and the SOLIX C1000 Gen 2 about 4,096 kWh.
Brand trust
EcoFlow
Ecosystem
The deepest catalogue in portable power, spanning the DELTA Pro, DELTA 3 and RIVER 3 lines plus panels and smart home panels. Breadth is the point: there is almost always a neighbouring EcoFlow when one model moves on.
Support
US phone, email and chat, with experiences that split hard. Plenty of prepaid-label replacements handled without friction, plenty of long waits and refurbished units sent against new claims. Buying through Costco or Amazon gives you a stronger returns backstop than the direct channel.
Community
Largest community in the space — Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
Fast charging is the house specialty, and the community around it is the largest in the category, which matters when you're troubleshooting an older unit late at night
Worth knowing
EcoFlow doesn't sell parts or offer service outside the warranty window. On a current model that's an annoyance. On a model that has left the range it's the thing to think about before you chase down clearance stock.
Anker
Ecosystem
7-8 SOLIX portable power stations across C-series (compact) and F-series (flagship), plus the X1 home energy system
Support
US-based, and historically the reason people bought Anker at all: replacements handled without an argument. Recent reports describe AI-driven first responses and awkward return logistics on heavy units, so the SOLIX support story is trending down from a high starting point rather than being bad.
Community
Moderate — active Reddit (r/Anker, r/AnkerSOLIXCommunity) and growing. Benefits from Anker's massive consumer electronics brand awareness.
App experience
Rated 4.5/5 iOS (~1,100 ratings) · 4.3/5 Android
Unique strength
InfiniPower cells and genuinely strong value per watt-hour in the mid-size class, where the C1000 line is one of the better buys in the catalogue. That's the version of Anker you're getting here.
Worth knowing
Firmware updates have removed features without warning, and the expansion ecosystem is smaller than EcoFlow's. If you expect to build outward over several years, that's the constraint to weigh.
Analyst note
EcoFlow has the wider range and the bigger community; Anker has the stronger value per watt-hour in exactly this size class and a support reputation moving in the wrong direction from a good place. None of that decides this page. One of these two units isn't sold any more, and that outranks every brand argument on either side.
Growth path
RIVER 3
FIXED CAPACITYFixed at 245Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 110W of solar. Limited to a single portable panel.
Limited ports. You'll likely need a power strip or splitter.
SOLIX C1000 Gen 2
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,024Wh.
Accepts up to 600W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are Anker-specific. You're investing in the Anker ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Growth only counts if you can still buy in, and the RIVER 3 is no longer sold (EcoFlow points owners to the RIVER 3 PLUS). That leaves the SOLIX C1000 Gen 2: it starts at 1,024Wh and takes Anker expansion batteries, so the ceiling moves if your needs do. The RIVER 3's fixed 245Wh still matters if you already own one, but it isn't a reason to pick it over the SOLIX C1000 Gen 2.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow RIVER 3
There's no long-term owner record for the RIVER 3 to lean on. What exists is comparative coverage against the RIVER 2, gathered from review sites and EcoFlow's own materials, and it reads as directional rather than lived-inA0. On that evidence the RIVER 3 was a clean upgrade in every direction at once: quieter, IP54-rated, faster on UPS switchover, lighter and larger-capacity than the unit it replacedA1A2A4.
One note on the noise figure, because it's easy to misread. Coverage describes the RIVER 3 running under 30 dB and quotes EcoFlow calling it whisper quietA1, but EcoFlow publishes that number for the RIVER line as a maximum reached under heavy charge or discharge, not as a best-case floor, so a light load sits below it. Reviewers landed on it as the small-station pick of 2026 for camping, van life and home UPS dutyA3. That recommendation is now unbuyable, which is the most useful thing this ledger says.
“The RIVER 3 operates under 30 dB — EcoFlow calls it 'whisper quiet,' quieter than a library — one of the most significant upgrades over the louder RIVER 2.”
Sources
backuppowerhub.com · ecoflow.com · rv.com · versus.com
Anker SOLIX C1000 Gen 2
The fastest thing the C1000 Gen 2 does is also the loudest thing it does. Reviewers clock a full HyperFlash recharge at roughly 49 minutesB1, and fan noise is the single most common complaint in the coverage: close to silent below 200W at about 35 dB, then audibly ramping under fast charge or heavy output, around 55 dB past 1,000WB2. Those two facts are the same event. If you plan to slam it from empty in the room where you're sitting, plan on hearing it.
The output gain over the original C1000 is the other thing reviewers keep returning to, with enough continuous headroom to carry a standard 1,500W space heaterB3. The overall read on it is a refined, fast-charging update to a platform that already sold well, and it's widely called the mid-size unit to beat in 2026B4. Coverage is strong and the specs defer to a current product recordB0, so this is one of the better-evidenced units in the catalogue.
“Fast HyperFlash charging — a full recharge in roughly 49 minutes, noticeably quicker than the original C1000's ~58-80 minutes.”
Sources
thepowerpick.com · macrumors.com · outdoorgearlab.com · technerdo.com · mensjournal.com · powerstationadvisor.com
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- The RIVER 3 improves on the RIVER 2 across the board — quieter (sub-30 dB), IP54-rugged, faster UPS, more capacity, lighter, and cheaper — a rare strict upgrade. [RIVER 3 · 3 entries]
- Fast charging and higher output over the original are the standout gains; fan noise under load or fast charging is the top complaint. [SOLIX C1000 Gen 2 · 3 entries]
- A1
“The RIVER 3 operates under 30 dB — EcoFlow calls it 'whisper quiet,' quieter than a library — one of the most significant upgrades over the louder RIVER 2.”
backuppowerhub.com / ecoflow.com — RIVER 2 vs RIVER 3 · 2026 · [positive]
- A2
“Over the RIVER 2, the RIVER 3 adds IP54 waterproofing, a faster UPS switchover, a 2x runtime mode, and a more compact, lighter form factor.”
backuppowerhub.com — RIVER 2 vs RIVER 3 · 2026 · [positive]
- A3
“Recommended as the better buy for most in 2026 — for camping, van life, or home UPS backup, where durability and noise matter, the data consistently favors the RIVER 3.”
backuppowerhub.com / rv.com — RIVER 3 review · 2026 · [positive]
- A4
“Holds more capacity and weighs less than the RIVER 2 while costing less, making it effectively a strict upgrade on the same platform.”
ecoflow.com / versus.com — RIVER 2 vs RIVER 3 · 2026 · [positive]
- B1
“Fast HyperFlash charging — a full recharge in roughly 49 minutes, noticeably quicker than the original C1000's ~58-80 minutes.”
thepowerpick.com / macrumors.com — Anker SOLIX C1000 Gen 2 review · 2026 · [positive]
- B2
“Fan noise is the single most common complaint — nearly silent at low load (about 35 dB under 200W), but the fans ramp up audibly during fast charging or heavy output, reaching around 55 dB at 1,000W-plus.”
outdoorgearlab.com / technerdo.com — C1000 Gen 2 review · 2026 · [negative]
- B3
“The higher continuous output crosses a useful threshold over the original — enough to run a standard 1,500W space heater with headroom to spare.”
thepowerpick.com / mensjournal.com — C1000 Gen 2 review · 2026 · [positive]
- B4
“Reviewers describe it as a refined, powerful, fast-charging update to a popular 1kWh platform, widely rated the mid-size unit to beat in 2026.”
thepowerpick.com / powerstationadvisor.com — C1000 Gen 2 review · 2026 · [positive]
Research compiled September 19, 2026.
What Owners Actually Report
Drawn from 35 comments on independent review channels — not from retailer reviews, which skew to the first week of ownership. Each line is our summary of one commenter's claim, linked to the original. We record what they said, including where it contradicts the spec sheet.
EcoFlow RIVER 3
35 claims from 21 comments · 30 from owners · 9 with figures
- UPS switchover
- 5 · 47% negative
- Price & value
- 6 · 17% negative
- Runtime
- 2 · 0% negative
- Warranty & support
- 6 · 73% negative
- Other
- 2 · 100% negative
What owners complain about
Accepts 80V-170V before switching over, which he calls poor for a home-office UPS.
UPS switchovermeasuredowner34 agreedsource →
Surge protection is only 150J, so he keeps it behind an older UPS's surge-only port.
Othermeasuredowner34 agreedsource →
Screen showed jumbled alphanumeric symbols, and the returned unit came back with Wi-Fi disabled.
Durabilityowner6 agreedsource →
What owners praise
Kept router and switch alive about 4 hours per charge during the 5 day post-Milton outage.
Runtimemeasuredowner38 agreedsource →
Happy sticking with their RIVER 3 units at $169 each.
Price & valuemeasuredowner45 agreedsource →
Works awesome as a UPS for Starlink router, switch and camera through rural spikes and outages.
UPS switchoverowner38 agreedsource →
Anker SOLIX C1000 Gen 2
22 claims from 14 comments · 18 from owners · 6 with figures
- Price & value
- 4 · 0% negative
- Runtime
- 3 · 15% negative
- UPS switchover
- 2 · 0% negative
- Inverter & surge
- 1 · 0% negative
- Solar input
- 1 · 0% negative
What owners complain about
Gen 2 loses the gen 1's ability to add an expansion battery.
Expandability23 agreedsource →
Same app failure as his other brands: paired devices go missing on later launches.
App & firmwareowner2 agreedsource →
Can only pull 100W from the C1000 Gen 2's 12V ports and cannot confirm how XT60i sensing works.
Otherownersource →
What owners praise
Two units keep his gas furnace, three fridge/freezers and network alive for 5+ hours.
Runtimemeasuredowner15 agreedsource →
Anker 1000 gen 2's edge is a 2000W inverter, also at 25 pounds.
Inverter & surgemeasuredowner8 agreedsource →
Got the C1000 gen 2 on sale for $379 plus a $219 200W panel.
Price & valuemeasuredowner6 agreedsource →
Claims are weighted by how specific they are, whether the commenter owns the unit, and how many readers agreed. Comments that mention a product under a rival's review count for more, because the commenter had no reason to be there. This is what buyers report, not our test results — for measurements we ran ourselves, see the methodology.
Who Should Buy Which
Buy the RIVER 3 if you…
- →You already own one and you're deciding whether to add to it rather than replace it: keep it as the grab-and-go for the 100Wh afternoon it finishes at 48% used, and let anything bigger be a second, larger unit's job.
- →You've found one sitting on a retailer's shelf and want to know what's in the box: 245Wh, 300W continuous with a 600W surge, 7.8 lb, and a 5-year term. All still true, all still decent, and none of it makes it a live recommendation.
- →You need a UPS for a router and a modem and nothing else: the RIVER 3's rated ceiling of no worse than 20ms is fine for that class of gear, which is the narrow job an owned unit still does well.
Buy the SOLIX C1000 Gen 2 if you…
- →You want one box that carries a working day away from a wall: it gets within 40Wh of the 910Wh workday profile, which is one trimmed appliance away from finishing.
- →You run something with a real startup spike, a compressor fridge or a shop tool: 3,000W of surge over a 2,000W rating swallows what a 600W ceiling refuses, and reviewers put a 1,500W space heater on it with headroom leftB3.
- →You're powering a CPAP and want margin rather than arithmetic: 870Wh usable against the 320Wh that profile needs leaves 550Wh spare, so the machine finishes the night and the battery isn't near empty in the morning.
- →You're feeding a table rather than a person: six AC outlets, two USB-C ports with the higher one at 140W, and a rated switchover of no worse than 10ms for a desk with a PC on it.
If neither fits
If you came here because you wanted the small box, close this page and go look at the RIVER 3 PLUS. That's the honest answer for the biggest group of people who land on this comparison: the RIVER 3 was the 7.8 lb unit you can throw in a trunk without a plan, EcoFlow no longer sells it, and the C1000 Gen 2 is 24.9 lb, which does not become the right shape just because it's the one that's in stock. The RIVER 3 PLUS is EcoFlow's live model in that class and it's where that want goes. Separately, if your actual need is the 1,645Wh blackout or the 4,685Wh van-life day, neither unit here is close: the Anker covers 53% and 19% of those, the RIVER 3 13% and 4%, and the fix is a larger station rather than a choice between these two.
The Bottom Line
Buy the SOLIX C1000 Gen 2 if the job is a workday, a tailgate, or a night of CPAP with margin left over. It's the only one of the two a store will sell you, and it earns the win anyway: four times the battery, nearly seven times the continuous output, and a surge ceiling that starts loads the RIVER 3 can only twitch at before sagging back to 300W.
But the sentence that matters most on this page isn't the verdict. It's that the RIVER 3 wasn't losing to the Anker, it was losing to being discontinued, and the thing it was good at, a 7.8 lb box that covers a 100Wh afternoon and rides in a trunk, is still a thing worth owning. If that's what brought you here, don't let the only in-stock option talk you into 24.9 lb. Go look at the RIVER 3 PLUS.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow RIVER 3 discontinued?
Yes. EcoFlow has dropped the base RIVER 3 from its store, so there's no price or buy option for it here, and anything you find is remaining retailer stock. The RIVER 3 PLUS is the model EcoFlow still sells in that size class. The RIVER 3's specs haven't changed, but it can't be a recommendation when nobody is selling it new.
Can the Anker SOLIX C1000 Gen 2 run a CPAP all night?
Yes, with room to spare. The overnight CPAP profile needs 320Wh, and the C1000 Gen 2 has 870Wh usable after the flat 85% derate, finishing the night with 550Wh left. The RIVER 3 doesn't get there: 208Wh usable covers about 65% of that night and then stops.
Will either of these get a house through an 8-hour blackout?
No. That profile needs 1,645Wh, and the C1000 Gen 2 covers 53% of it while the RIVER 3 covers 13%. The Anker is the better of the two by a wide margin and still runs out mid-outage. If whole-evening backup is the actual job, shop a larger station rather than choosing between these.
The RIVER 3 has a 2x surge ratio and the C1000 Gen 2 only 1.5x. Isn't that better?
No, and it's the most commonly misread number on this pairing. A ratio describes how far an inverter sits below its own peak; 2x of 300W is a 600W ceiling, while 1.5x of 2,000W leaves 1,000W of momentary room above the rating. Motors draw a fixed number of watts at startup, not a multiple of someone else's rating, so the absolute ceiling is what decides whether something starts.
Should I buy a clearance RIVER 3 if I find one?
Only if you know precisely what you're getting and the job is small. You get 245Wh, 300W continuous, 7.8 lb and a 5-year term on a model that's left the range, and EcoFlow doesn't offer parts or service once a warranty window closes. For the 100Wh afternoon that's a fine little machine. For anything you'd lean on, the RIVER 3 PLUS is the current version of that idea.
Related comparisons
Where to buy
EcoFlow RIVER 3
Left EcoFlow's store
Anker SOLIX C1000 Gen 2Pick
$499.99
$499.99 · direct from Anker
down from $530 · 6% below usual
Last checked 28 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.