Head-to-head test
EcoFlow RIVER 2 vs Anker SOLIX C300 DC
The RIVER 2 has two real AC outlets and the C300 DC has none — everything else about this matchup, from price to noise to charging speed, actually favors the unit that can't run a lamp.
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
EcoFlow
RIVER 2
1,585Power Score · Device Hub
$189.00 list · direct from EcoFlow
Anker
SOLIX C300 DC
1,621Power Score · Device Hub
$199.99 list · direct from Anker
Spec deltas
The EcoFlow RIVER 2 has two AC outlets. The Anker SOLIX C300 DC has zero. That's the one spec in this pair that isn't a matter of degree, and it's also nearly the only one that favors the RIVER 2.
The DC costs $49 less ($169.99 against $219.00), weighs 1.63 lbs less, charges over a 140W USB-C port instead of the RIVER 2's single 60W port, and comes out ahead on the engine's lifetime cost-per-kWh math too — 0.20 dollars against 0.29. The RIVER 2's own spec sheet lists it running under 50dB in use, and owners report it's noticeably louder in practice than EcoFlow's own newer RIVER 3A1.
So the RIVER 2 isn't winning this on value, weight, charging speed, or noise. It's winning on the one thing the DC structurally cannot do: put out AC power at all.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
On a pure Wh-per-dollar basis that's a losing trade, which means the entire premium has to be justified by the two AC outlets and nothing else on the spec sheet.
The RIVER 2 lists 2 AC outlets and 600W of surge capacity; the C300 DC lists 0 AC outlets and marks surge not applicableThe RIVER 2 costs $219.00 and holds 256Wh; the C300 DC costs $169.99 and holds 288Wh
Why it mattersBuyers optimizing purely for capacity per dollar should skip the RIVER 2 unless AC access is a hard requirement, not a nice-to-have.
For anything running near a bed or a desk overnight, that's a documented real-world gap, not a spec-sheet rounding difference.
The RIVER 2's spec sheet lists it running under 50dB under loadOwners report it's noticeably louder under load than EcoFlow's own newer RIVER 3A1
Why it mattersBuyers who need the AC outlets for something they'll sleep or work near should budget for hearing the RIVER 2 run, and weigh that against the DC's unrated but inverter-free silence.
A 60W port caps out well below what a lot of USB-C laptops draw under real load, while the DC's 140W port covers nearly any USB-C laptop on the market today.
The RIVER 2 has a single 60W USB-C portThe C300 DC has four USB-C ports rated up to 140W
Why it mattersBuyers charging laptops and phones rather than running appliances get a materially better charging experience from the unit with zero AC outlets.
That's not a close call or a rounding difference; the DC wins the lifetime math on both halves of the equation independently.
The engine prices the C300 DC at 0.20 dollars per lifetime kWh against the RIVER 2's 0.29The RIVER 2 delivers 768 lifetime kWh against the DC's 864, despite costing $49 more upfront
Why it mattersAnyone treating lifetime cost-per-kWh as the deciding number should default to the DC unless AC access rules it out entirely.
The specific dimensions that decide these two units — everything else is a tie.
What the Specs Don't Tell You
Selected because: UPS advantage, the 50dB noise disclosure, and the DC's undisclosed rating are the load-bearing facts for this pair.
The UPS card is the one the engine calls an outright advantage rather than a note, and it goes to the RIVER 2 — a documented sub-30ms switchover behind real AC outlets. The DC has nothing to switch over, so the field is empty rather than slower.
The RIVER 2's noise card is informational, not a warning, but the number behind it — under 50dB — is exactly what owners describe as the louder of EcoFlow's own two small unitsA1. The DC's noise card is a warning for a different reason: no rating is published at all, which given it has no inverter fan to spin up may simply mean there's less to measure.
Lifetime Value
Selected because: The RIVER 2 loses on both price and total lifetime kWh delivered — worth showing plainly.
cost / lifetime kWh
The DC wins this cleanly on both halves of the math: 0.20 dollars per lifetime kWh against the RIVER 2's 0.29, built on 864 total lifetime kWh delivered against the RIVER 2's 768. Lower price, more energy, better rate — none of the usual tradeoffs apply here.
The RIVER 2's one consolation is warranty economics: $44 per warranty-year against the DC's $57, because five years of coverage beats three even at a higher sticker price. That's a real number, but it's a coverage argument, not a cost-of-energy one.
Portability & Form Factor
Selected because: A real 1.63 lb gap plus the single vs quad USB-C port story belongs together.
weight
1.63 lbs separates these two — noticeable in a hand, not a real strain either way. The bigger portability story is charging speed: the RIVER 2's single 60W USB-C port against the DC's four ports up to 140W, which matters more on a trip than the pound and a half difference in the bag.
That port gap tracks the same story as the rest of the page: strip the AC inverter and its outlets, and what's left is a device-charging box built to move fast on the one thing it actually does.
Brand Trust
Selected because: Cross-brand pair with real, current caveats on both sides worth surfacing.
EcoFlow brings the deeper category ecosystem and faster charging tech across its lineup, but it's also the brand with the more recent black eye — the October 2025 DELTA Max 2000 recall over overheating risk is worth knowing about even on a small unit like the RIVER 2.
Anker's SOLIX line carries the parent brand's consumer-electronics trust and, on the Gen 2 lineup specifically, some of the best dollar-per-watt-hour value in the category — but recent reports describe SOLIX support sliding toward generic AI-driven responses. Neither brand's support reputation should be the deciding factor here; the AC outlet question already is.
Strengths & trade-offs
EcoFlow RIVER 2
Strengths
- +Costs $11 less
- +Longer warranty
- +Faster solar charging
Trade-offs
- –No major technical downsides compared to rival.
Anker SOLIX C300 DC
Strengths
- +Lighter by 1.6 lb
- +Larger battery capacity
Trade-offs
- –No major technical downsides compared to rival.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six 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 can fully handle this scenario (needs 2,100Wh). You'd need a higher-capacity station or to cut back on usage.
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 can fully handle this scenario (needs 1,645Wh). You'd need a higher-capacity station or to cut back on usage.
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
Neither unit
Neither unit can fully handle this scenario (needs 320Wh). You'd need a higher-capacity station or to cut back on usage.
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
Neither unit can fully handle this scenario (needs 910Wh). You'd need a higher-capacity station or to cut back on usage.
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
Neither unit
Neither unit can fully handle this scenario (needs 670Wh). You'd need a higher-capacity station or to cut back on usage.
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 can fully handle this scenario (needs 4,685Wh). You'd need a higher-capacity station or to cut back on usage.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the six 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 C300 DC runs 1.2h vs 1.1h.
$199.99 list · direct from Anker
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 0–16.3hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–3.3hHigh-Draw Appliances
These reveal the real limits¹ 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
July 15, 2026
Verdict: the EcoFlow RIVER 2
If a wall outlet is part of the job, the RIVER 2 wins by default — it's the only one of these two with AC outlets at all, and it backs them with a documented sub-30ms UPS switchover. Everywhere else, though, this is a rough matchup for the RIVER 2 to defend: it costs $49 more, holds 32Wh less, ships a single 60W USB-C port against the DC's four up to 140W, and runs under 50dB where the DC's rating is undisclosed but owners flag the RIVER 2 as the noisier of EcoFlow's own two small unitsA1. Buy the RIVER 2 only because you need the outlets — not because anything else on its spec sheet earns the extra money.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 15, 2026. The links below open EcoFlow's and Anker's current prices.
$189.00 list · direct from EcoFlow
or check the SOLIX C300 DC price$199.99 list
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated July 15, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): CPAP, Tailgating.
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 2 rates 4.1/5 (48th percentile of 22 Personal-class units), and SOLIX C300 DC rates 4.2/5 (52nd percentile of 22 Personal-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.
Under 50dB on Paper, Louder Than Its Own Successor in Practice
The RIVER 2's spec sheet lists it running under 50dB, and field reports describe it as noticeably louder than EcoFlow's own newer RIVER 3 under the same load. Worth knowing before putting it near a bed.
The RIVER 2's UPS Switchover Only Matters Because It Has Outlets to Protect
Its sub-30ms switchover is a real, documented spec — but it's protecting AC-connected gear specifically. The DC has no AC outlets to put behind a UPS in the first place, so the comparison isn't close versus slow, it's present versus not applicable.
5 Years vs 3 — and the RIVER 2 Actually Wins This One
The RIVER 2's five-year warranty against the DC's three works out to $44 per warranty-year versus $57, despite the RIVER 2 costing more upfront. It's the one line item on this page where paying more buys a genuinely better rate, not just more capability.
No Noise Rating on the C300 DC
The DC ships without a published dB figure. Given it has no AC inverter running under load, there may be meaningfully less fan noise to disclose in the first place — but it's still an absence on the spec sheet, not a confirmed quiet rating.
Full record above — the Test Desk pick is the RIVER 2.
Check RIVER 2 price →or check the SOLIX C300 DC priceOwnership 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 2 is cheaper to buy, but the SOLIX C300 DC is cheaper to own. At $0.23/kWh over its lifetime vs $0.25/kWh, the SOLIX C300 DC's higher cycle life and capacity make each dollar go further over the years.
Brand trust
EcoFlow
Ecosystem
Largest in portable power — 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels
Support
US-based phone/email/chat support (1-800-368-8604). Experiences are polarized — many report hassle-free prepaid-label replacements, but others report long waits and refurbished units sent for new claims. Pro tip: buying from Costco or Amazon gives you a stronger return safety net.
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
Fastest-charging technology (X-Stream), deepest product ecosystem, and most active innovation cadence. Supports up to 180kWh modular expansion with DELTA Pro Ultra X.
Worth knowing
The Oct 2025 DELTA Max 2000 recall (overheating/fire risk, 6 incidents) is worth noting. Also tested subscription paywalls for advanced app features in early 2025 before community backlash paused the plan. No parts or service offered out of warranty.
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 support. Historically known for incredible no-hassle replacements, but recent reports describe AI-driven support agents giving generic responses and complex return logistics for heavy units (hazmat shipping). The Anker brand reputation is still strong, but SOLIX-specific support quality is trending down.
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
Parent brand trust from Anker's consumer electronics dominance. InfiniPower technology for long cycle life. Strong $/Wh value in the mid-size and larger units — the S2000, F2600 and C1000 are among the better buys per watt-hour in the catalog.
Worth knowing
Support quality appears to be declining from its historically excellent level. Firmware updates have removed features without warning. Expansion ecosystem is smaller than EcoFlow's.
Analyst note
EcoFlow positions itself as a mid-to-premium brand with stronger support infrastructure, while Anker competes on value. The question is whether the EcoFlow ecosystem and support premium is worth it for your use case.
Growth path
RIVER 2
FIXED CAPACITYFixed at 256Wh, 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 C300 DC
FIXED CAPACITYFixed at 288Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 100W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Neither expands, and that's no knock on either — each is a complete unit at a fixed size. Buy the capacity that covers your needs now (the SOLIX C300 DC gives you the larger ceiling); you can't add to either later.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow RIVER 2
Coverage of the RIVER 2 is largely comparative — it shares its core platform with the newer RIVER 3, running the same 300W output, LiFePO4 chemistry, and roughly 60-minute fast charging, and remains a popular, proven budget unit in its own rightA2. The spec sheet's under-50dB noise figure lines up with owner reports that it runs noticeably louder in practice than the RIVER 3 that replaced itA1.
The going recommendation is qualified: for strictly indoor use where every dollar counts, the RIVER 2 is still reasonable, but it lacks the RIVER 3's refinements — better waterproofing, a faster UPS switchover, and quieter operationA3. None of that changes what it does have that the DC doesn't: two AC outlets.
“Shares the same core platform as the RIVER 3 — 300W output, LiFePO4 chemistry, and roughly 60-minute fast charging — and remains a popular, proven budget small-format unit.”
Sources
backuppowerhub.com · ecoflow.com · versus.com
Anker SOLIX C300 DC
Coverage of the DC leans on its charging story: 2 USB-A ports and 4 USB-C ports plus a 12V car socket, with two-way USB-C PD 3.1 taking the unit itself to 80% in about an hourB2. Owners report that's enough to charge a phone and laptop several times over, run a fan for hours, or power a small light setupB3.
That capacity comes from the same tradeoff that keeps it under 6.2 lbs — no AC inverter on boardB1. Reviewers are direct about what that means in practice: it's built for modern travelers charging devices, not for running AC appliancesB4, which is precisely the gap the RIVER 2's two outlets exist to fill.
“A 288Wh unit that ditches the heavy AC inverter to focus on DC power, keeping it very light at about 6.2 lbs.”
Sources
the-gadgeteer.com · forbes.com · androidpolice.com · batteryessence.com · bestbuy.com · campingsolar.us
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 2 is the older, cheaper unit on the same core platform — reasonable for budget indoor use but louder and less refined than the RIVER 3. [RIVER 2 · 2 entries]
- Light DC-only design (no AC inverter), fast USB-C charging, and good port selection for device charging are the highlights. [SOLIX C300 DC · 3 entries]
- A1
“The RIVER 2's spec data doesn't include a specific dB rating, and owner reports suggest it's noticeably louder under load than the newer RIVER 3.”
backuppowerhub.com — EcoFlow RIVER 2 vs RIVER 3 · 2026 · [negative]
- A2
“Shares the same core platform as the RIVER 3 — 300W output, LiFePO4 chemistry, and roughly 60-minute fast charging — and remains a popular, proven budget small-format unit.”
ecoflow.com / versus.com — RIVER 2 vs RIVER 3 · 2026 · [positive]
- A3
“For strictly indoor use where every dollar counts, the RIVER 2 is still a reasonable choice — but it lacks the RIVER 3's refinements like waterproofing, faster UPS, and quieter operation.”
backuppowerhub.com — RIVER 2 vs RIVER 3 recommendation · 2026 · [mixed]
- B1
“A 288Wh unit that ditches the heavy AC inverter to focus on DC power, keeping it very light at about 6.2 lbs.”
the-gadgeteer.com / forbes.com — SOLIX C300 DC review · 2026 · [positive]
- B2
“Offers 2 USB-A and 4 USB-C ports plus a 12V car socket; two-way USB-C with PD 3.1 recharges the unit to 80% in about 1 hour.”
androidpolice.com / batteryessence.com — SOLIX C300 DC review · 2026 · [positive]
- B3
“Owners praise its portability and capacity — enough to charge a phone and laptop several times, run a fan for hours, or power a small light setup.”
bestbuy.com owner reviews — SOLIX C300 DC / C300X · 2026 · [positive]
- B4
“A DC-focused design with app integration and solar support — best for modern travelers charging devices, not running AC appliances.”
androidpolice.com / campingsolar.us — SOLIX C300 DC review · 2026 · [mixed]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the RIVER 2 if you…
- →You need to plug in an AC device at all — a lamp, a router, a fan that isn't USB-powered — since the DC has no outlet for any of that.
- →You want a documented sub-30ms UPS switchover for something that can't tolerate a slow transfer, and you're willing to accept a louder, pricier, less capacious unit to get it.
Buy the SOLIX C300 DC if you…
- →Every device you're charging runs on USB-C, USB-A, or 12V — the DC is $49 cheaper, 1.63 lbs lighter, and its 140W USB-C port charges laptops the RIVER 2's 60W port can't keep up with.
- →You want the better lifetime-value pick outright: 0.20 dollars per kWh against the RIVER 2's 0.29, on more total energy delivered over the unit's rated life.
If neither fits
Neither covers a real weekend camping trip (roughly 2,100Wh needed) or an 8-hour multi-appliance blackout (roughly 1,645Wh needed) — both units run out well short of either job regardless of which one has outlets. Step up to a 1,000Wh-plus unit from either brand for that use case.
The Bottom Line
This one has a narrow, hard gate: does the job need an AC outlet or not. The RIVER 2 has two; the C300 DC has zero, and that single fact is doing all the work in any RIVER 2 recommendation.
Past that gate, the DC wins almost everything else — price, capacity, USB-C speed, and the engine's own lifetime cost-per-kWh math. Buy the RIVER 2 because you need the outlets, not because the rest of its spec sheet earned the extra $49.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
What's the real difference between the RIVER 2 and the SOLIX C300 DC?
The RIVER 2 has two AC outlets backed by a sub-30ms UPS switchover; the C300 DC has none. Past that one fact, the DC is cheaper ($169.99 against $219.00), holds more capacity (288Wh against 256Wh), and charges faster over USB-C (140W against 60W).
Can the SOLIX C300 DC power anything that plugs into a wall?
No. Its spec sheet lists zero AC outlets — it charges and outputs only over USB-A, USB-C, and a 12V car socket. If the job involves a standard wall plug, the RIVER 2 is the only one of these two that can do it.
Is the RIVER 2 loud?
Its spec sheet lists it running under 50dB under load, and owners report it's noticeably louder in practice than EcoFlow's own newer RIVER 3. The DC has no published noise rating at all, but it also has no AC inverter running under load to generate the noise in the first place.
Which one is the better value?
The DC, on every lifetime-value metric the engine tracks: 0.20 dollars per lifetime kWh against the RIVER 2's 0.29, built on more total energy delivered over its rated life for $49 less upfront. The RIVER 2's only real recovery is warranty economics — $44 per warranty-year against the DC's $57.
Which one should I get for a CPAP or something I'll sleep near?
If your CPAP plugs into AC, the RIVER 2 is your only option here, but its documented under-50dB noise level and owner reports of it running louder than its own newer sibling are worth knowing going in. If your device charges over USB-C, the DC's undisclosed rating and lack of an inverter fan make it the quieter bet by design.
Where to buy
EcoFlow RIVER 2Pick
$189.00
$189.00 list · direct from EcoFlow
Anker SOLIX C300 DC
$199.99
$199.99 list · direct from Anker
Prices may vary by retailer and are subject to change.