Head-to-head test
EcoFlow RIVER 2 Max vs Anker SOLIX C800 Plus
Five of the six loads modeled on this page beat both of these stations outright, so the real question isn't which one wins a blackout — it's whether you want the lighter, cheaper box or the bigger, quieter one for the light jobs either can actually finish.
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
EcoFlow
RIVER 2 Max
2,030Power Score · Appliance Class
$289.00 list · direct from EcoFlow
Anker
SOLIX C800 Plus
2,199Power Score · Appliance Class
$649.00 list · direct from Anker
Spec deltas
Five of the six real-world loads modeled on this page beat both the EcoFlow RIVER 2 Max and the Anker SOLIX C800 Plus outright — neither gets through a camping weekend, a blackout, a full workday, a tailgate, or a day of van life without recharging mid-job. That's not a knock on either unit specifically; it's a sign you're comparing two small-capacity stations, not two blackout solutions.
The RIVER 2 Max is the lighter, cheaper option, at $289 and 13.4 lbs; the SOLIX C800 Plus is the bigger one, at $649 and 24 lbs, with 768Wh against the RIVER 2 Max's 512Wh. Across each unit's full life, the RIVER 2 Max is also the cheaper one to own: $0.19 per lifetime kilowatt-hour against $0.28 for the SOLIX C800 Plus.
The one load either unit actually finishes is an overnight CPAP, and there the SOLIX C800 Plus wins on margin, not necessity — both get you through the night. For everything bigger on this page, the honest answer is that neither is the right tool, and the real decision is what you're willing to carry and pay for on the jobs they can do.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
That means every scenario failure on this page is a battery running dry, not an inverter refusing to start something. The story here is watt-hours, not watts.
RIVER 2 Max is rated for 500W continuous, surging to 1,000WSOLIX C800 Plus is rated for 1,200W continuous, surging to 1,600Wthe heaviest single appliance modeled across all six scenarios on this page draws 400W
Why it mattersDon't shop these two on output watts. Shop them on capacity and how you'll recharge, because that's where they actually lose.
cost / lifetime kWh
Bigger tank, worse per-unit value — the extra 256Wh per charge costs more than its share of the $360 gap between their sticker prices would suggest.
RIVER 2 Max costs $289 and totals roughly 1,536 lifetime kWh across its rated 3,000 cycles, for $0.19 per lifetime kWhSOLIX C800 Plus costs $649 and totals roughly 2,304 lifetime kWh across the same 3,000 cycles, for $0.28 per lifetime kWhSOLIX C800 Plus holds 768Wh per charge against the RIVER 2 Max's 512Wh
Why it mattersA buyer optimizing for total cost of ownership, not sticker price alone, should default to the RIVER 2 Max unless they specifically need the extra headroom.
That reserve margin is the entire practical argument for paying more for the SOLIX C800 Plus here — everywhere else on this page, both units simply run out, so this is the one place extra capacity actually cashes out into something usable.
CPAP Overnight needs 320Wh, and both units can handle itRIVER 2 Max uses 74% of its usable capacity for that load; SOLIX C800 Plus uses 49%CPAP Overnight is the only one of six modeled scenarios either unit can actually complete
Why it mattersIf overnight CPAP backup is specifically your use case, that margin is worth paying for. If it isn't, the other five scenarios say the extra capacity buys you nothing.
Capacity
Needing 718% of a battery is still impossible. It doesn't become a livable plan because the alternative needed 1,077%. The SOLIX C800 Plus is the mathematically less-wrong answer in all six scenarios and it still isn't a right answer in five of them.
In every one of the six modeled scenarios, the SOLIX C800 Plus's percent-of-usable-capacity-needed is lower than the RIVER 2 Max'sVan Life Daily needs about 4,685Wh — 718% of the SOLIX C800 Plus's usable capacity and 1,077% of the RIVER 2 Max'sSOLIX C800 Plus holds 768Wh against the RIVER 2 Max's 512Wh
Why it mattersDon't let 'relatively better across the board' talk you into either unit for daily van life or a multi-day blackout. For loads this size, both belong in the same buy-something-bigger pile.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: 5 of 6 modeled loads overrun both units — this is the real story, not a spec-sheet contest.
Five of these six nights end the same way for both units: an empty battery before the job's done. Weekend Camping needs about 2,100Wh; 8-Hour Blackout needs 1,645Wh; Remote Workday needs 910Wh; Tailgate Party needs 670Wh; Van Life Daily needs 4,685Wh. Neither the RIVER 2 Max's 512Wh nor the SOLIX C800 Plus's 768Wh gets within range of any of them.
The one exception is CPAP Overnight, at 320Wh, and it's telling that it's also the lightest load on this page. Both units clear it comfortably. That's the honest shape of this matchup: not a blackout-readiness contest, but a question of which small jobs you need covered and which unit you'd rather carry and pay for while doing it.
Lifetime Value
Selected because: cheaperToOwn favors p1 by a real margin ($0.19 vs $0.28/kWh) — the core value argument.
cost / lifetime kWh
Run each unit across its full 3,000-cycle, 5-year-warranty life and the RIVER 2 Max delivers every kilowatt-hour for $0.19; the SOLIX C800 Plus, for $0.28. That's the cheaper-to-own unit settled by the numbers, not a close call.
The SOLIX C800 Plus isn't a bad value in isolation. It holds more energy per charge, and its cost per kWh reflects a genuinely bigger battery, not padding. But if lifetime cost per unit of energy is the metric that matters most, the RIVER 2 Max wins it clearly, on top of costing less to buy in the first place.
What the Specs Don't Tell You
Selected because: four cards fire (noise, surgeRatio, ups, warranty), each with a checkable number and a genuine idle-vs-load trap on noise.
None of the four things the spec sheet glosses over here is a dealbreaker by itself, but together they sketch two different products. The RIVER 2 Max is built to be fast and cheap: quick to recharge, light to carry, less to buy. The SOLIX C800 Plus is built to be quiet and steady: a lower idle noise spec, a faster switch to battery power, more headroom before it runs dry.
The one genuine trap is noise. Both dB figures below are idle measurements, not load measurements, and reviewers say the SOLIX C800 Plus's fan gets noticeably more present once it's working hard, during fast charging or a sustained heavy drawB1B11. Treat the spec gap as a starting point for comparison, not a promise of what either will sound like mid-charge.
Portability & Form Factor
Selected because: 13.4 lbs vs 24 lbs is a real daily-carry difference and the flip side of the capacity gap.
weight
13.4 lbs against 24 lbs is the difference between one-handing a unit out of a trunk and needing both hands and a little planning. That gap tracks the capacity gap almost exactly — the extra weight buys the extra 256Wh and the quieter, faster-switching hardware inside, not nothing.
It matters most at the two ends of this comparison: for CPAP Overnight, where the unit sits a few feet from the bed all night, and for anything hauled to a tailgate or campsite by hand rather than wheeled. 10.6 pounds doesn't sound like much on a spec sheet. It's more noticeable late at night, three trips into unloading the car.
Brand Trust
Selected because: cross-brand pair (EcoFlow vs Anker) with real, distinct ecosystem/support/community facts worth surfacing.
EcoFlow and Anker are playing different games here. EcoFlow has the larger ecosystem and the faster charging technology across its lineup; Anker's SOLIX line is newer and narrower, built around efficiency and long cycle life. Neither brand fact should move you off the numbers above, but both are worth knowing before buying into either ecosystem.
Both carry a 5-year warranty here, so the practical brand question isn't years of coverage, it's support and community. EcoFlow's support experience varies by purchase channel, with a stronger return safety net through a major retailer than buying direct. Anker's has historically been the stronger of the two but is reportedly leaning more on automated responses lately.
Strengths & trade-offs
EcoFlow RIVER 2 Max
Strengths
- +Costs $360 less
- +Lighter by 10.6 lb
Trade-offs
- –Weaker inverter (-700W) limits appliance compatibility.
- –Can receive complaints about fan noise under heavy load.
Anker SOLIX C800 Plus
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$360) than the RIVER 2 Max.
- –Significantly heavier (+10.6 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 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
A weekend of camping loads runs about 2,100Wh. The SOLIX C800 Plus comes closer but still needs more than three times its usable capacity; the RIVER 2 Max needs nearly five times its own. Bring a way to recharge mid-trip, or size up.
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
Eight hours of blackout-style loads need about 1,645Wh. Both units would need to recharge mid-outage to finish the job. This pair is sized for a few hours of backup, not a full one.
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 C800 Plus
This is the one scenario either unit actually finishes. The RIVER 2 Max uses 74% of its usable capacity to get there; the SOLIX C800 Plus uses only 49%, finishing with real margin left over for a bad night or an extra device.
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
A full remote workday of laptop, monitor, and router draws around 910Wh — more than double what the RIVER 2 Max can supply, and still beyond what the SOLIX C800 Plus has to give. Plan on recharging by lunch with either one.
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
A tailgate's speakers, lights, and small appliances add up to about 670Wh. The SOLIX C800 Plus comes close, needing just over its full usable capacity, while the RIVER 2 Max falls further short. Neither makes it through the whole party on one charge.
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
Running a van's daily loads takes about 4,685Wh, nowhere near what either of these carries in a single charge. This is a job for a fixed house battery or a much larger, expandable system, not a portable station this size.
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 C800 Plus runs 3.2h vs 2.1h.
$649 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 0–43.5hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–8.7hHigh-Draw Appliances
These reveal the real limitsscale 0–0.7h¹ 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 28, 2026
Verdict: the EcoFlow RIVER 2 Max
Neither unit covers the big jobs modeled here, so this comes down to value on the small ones both can actually do. The RIVER 2 Max costs $289 against $649 and stays cheaper across its life, at $0.19 per lifetime kWh against $0.28 — a real gap, not a rounding error. The SOLIX C800 Plus is the better-specced unit (more capacity, a quieter idle rating, a faster 20ms switchover) and it wins the one scenario either can finish, CPAP Overnight, with real margin to spare. That's worth roughly double the money and meaningfully more weight to carry, for headroom you'll only use in a narrow set of cases. Buy the RIVER 2 Max unless you specifically need the SOLIX C800 Plus's extra margin or quiet.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 28, 2026. The links below open EcoFlow's and Anker's current prices.
$289.00 list · direct from EcoFlow
or check the SOLIX C800 Plus price$649.00 list
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated July 28, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS.
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 Max rates 3.9/5 (33rd percentile of 19 Compact-class units), and SOLIX C800 Plus rates 4.0/5 (39th percentile of 19 Compact-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.
62 dB and 45 dB Are Idle Numbers
Both published figures are measured at idle, not under real load. Treat the 62 dB and 45 dB specs as a starting point for comparison, not a promise of how either unit sounds while fast-charging or running a heavy draw.
Surge Ratio: Headroom Over Rated Output
The RIVER 2 Max surges to 1,000W from a 500W continuous rating, exactly double. The SOLIX C800 Plus surges to 1,600W from 1,200W continuous, about 1.33 times. Both numbers comfortably clear the appliance loads modeled on this page, so neither unit's surge rating is the limiting factor here. Capacity is.
Switchover Speed: 20ms vs 30ms
The SOLIX C800 Plus switches to battery power in 20ms; the RIVER 2 Max takes 30ms. Both are fast enough that most electronics never notice, but for anything sensitive to even a brief interruption, the SOLIX C800 Plus has the faster spec.
Same 5 Years, Different Price Per Year
Both carry a 5-year warranty. Spread each unit's price across that term and the RIVER 2 Max costs $58 a year to own; the SOLIX C800 Plus costs $130. Identical coverage length, more than double the yearly cost.
Full record above — the Test Desk pick is the RIVER 2 Max.
Check RIVER 2 Max price →or check the SOLIX C800 Plus 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 Max wins on both sticker price and long-term value. At $0.19/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
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's ecosystem is the bigger one and its charging technology is the faster of the two industry-wide; Anker's SOLIX lineup is newer and leans on long cycle life and efficiency. Both carry a 5-year warranty here, so the practical brand question isn't years of coverage. It's which company's ecosystem and support experience you'd rather be inside of long-term.
Growth path
RIVER 2 Max
FIXED CAPACITYFixed at 512Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 220W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
SOLIX C800 Plus
FIXED CAPACITYFixed at 768Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 300W 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 C800 Plus 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 Max
Owner and reviewer coverage on the RIVER 2 Max leans positive and centers on three things: how light the 512Wh package feels for its sizeA1, how fast it refills (reviewers clock a full charge in about an hour using EcoFlow's X-Stream charging)A2, and how simple the companion app is for checking charge level and tuning charge speed over WiFi or BluetoothA3. One field test ran it through a telescope, a big-screen TV, two laptops, and phones across a 4-hour event and still had power to spare, consistent with the roughly 3,000-cycle LFP rating behind itA4.
Coverage here is thinner than for the SOLIX C800 Plus — four sourced claims, all positive, none speaking to real-world fan behavior under load. Take the spec-sheet noise comparison at face value for this unit; the field evidence simply doesn't cover it yet.
“512Wh in a light package of about 13 lbs, lighter than some of its closest competitors that use Li-Ion chemistry.”
Sources
storagereview.com · backuppowerhub.com · gagadget.com · ecoflow.com · thecampingnerd.com · thetechnologyman.com · bestbuy.com
Anker SOLIX C800 Plus
Reviewers consistently flag fan noise once the SOLIX C800 Plus is working hard: fast-charging or a sustained heavy load makes the fan hard to ignore in a quiet roomB1B11, though more than one calls it manageable at roughly arm's length rather than a dealbreakerB11. The companion app draws the opposite reaction, praised repeatedly for remote monitoring and painless firmware updatesB7B8B15. One reviewer ran a fridge and freezer off it for 8 hours and used only 10% of the chargeB6, and a separate test found it kept a monitor running through a simulated outage with no flicker at allB4.
The recurring worry, though, is capacity. One reviewer went in specifically unsure whether 768Wh would be enoughB5, and another found it short on headroom for heavier appliances like kettles or coffee machinesB10, describing the capacity as an awkward middle ground next to same-priced rivals with more Wh on paperB12. The 300W solar input drew a similar caveat: fine for portable panels, not built around large static arraysB9. That didn't stop at least one reviewer from coming away thoroughly impressed overallB13 — but the capacity ceiling this page keeps finding shows up in the field, too, not just in our own numbers.
“The pole light felt is a little over the top and unnecessary.”
Sources
dustinabbott.net
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Light weight, fast roughly-one-hour charging, and a simple capable app are the standout praise for this 512Wh unit. [RIVER 2 Max · 3 entries]
- Fan noise is consistently reported as noticeable during fast AC charging or high sustained wattage, though most reviewers call it 'manageable' rather than a dealbreaker. [SOLIX C800 Plus · 2 entries]
- The companion app is repeatedly praised for remote monitoring/control and firmware delivery, with no reviewers reporting connectivity or crash complaints. [SOLIX C800 Plus · 3 entries]
- 768Wh capacity is flagged by multiple reviewers as the unit's main limitation for heavy appliances and against same-price competitors, even though real-world light loads (fridge, gadgets) performed well. [SOLIX C800 Plus · 4 entries]
- The signature 'Plus' camping-light pole/torches are polarizing: some reviewers call the feature genuinely useful and a lantern-replacement, others call it an unnecessary gimmick that sacrifices the C800's cable-storage cubby. [SOLIX C800 Plus · 3 entries]
- A1
“512Wh in a light package of about 13 lbs, lighter than some of its closest competitors that use Li-Ion chemistry.”
storagereview.com / backuppowerhub.com — RIVER 2 Max review · 2026 · [positive]
- A2
“Fully charges in about 60 minutes via X-Stream charging — far faster than most portable power stations — with multiple charging options.”
gagadget.com / ecoflow.com — RIVER 2 Max review · 2026 · [positive]
- A3
“The EcoFlow app offers simple remote control and monitoring over WiFi and Bluetooth — view charge levels, customize settings, and adjust charging speed from a phone.”
thecampingnerd.com / ecoflow.com — RIVER 2 Max review · 2026 · [positive]
- A4
“Upgraded LFP chemistry rated for about 3,000 cycles, roughly a decade of everyday use; in field testing it powered a telescope, a 65-inch LED TV, two laptops, and phones through a 4-hour event with power to spare.”
thetechnologyman.com / bestbuy.com owner reviews — RIVER 2 Max · 2026 · [positive]
- B1
“Once the temperature rose above 80F with a 1,030 average wattage, the fan noise was unavoidable and quite present in a quiet house.”
How-To Geek — 'Anker Solix C800 Plus Review: A Power Station Prepared to Illuminate Nighttime' · 2024-03 · [negative]
- B4
“Unplugged the power supply to the C800 Plus to simulate a power outage. No reaction on the monitor, no flicker, just continued operating.”
DustinAbbott.net — 'Anker Solix C800 Plus Power Station Review' · 2024-03 · [positive]
- B5
“My lone concern on this front is whether or not the battery capacity is sufficient.”
DustinAbbott.net — 'Anker Solix C800 Plus Power Station Review' · 2024-03 · [mixed]
- B6
“I connected the Anker and in 8 hours, my frig/freezer used 10% of the power.”
The Gadgeteer — 'Anker SOLIX C800 Plus power station review' · 2024-04 · [positive]
- B7
“My other power stations do not have a companion phone app. But after the first trip, I saw how this feature would come in handy.”
The Gadgeteer — 'Anker SOLIX C800 Plus power station review' · 2024-04 · [positive]
- B8
“You should always charge at a slower rate if possible though, as it helps to preserve the battery life.”
MakeUseOf — 'Anker Solix C800 Plus Review: The Ultimate Emergency and Camping Companion' · 2024-05 · [mixed]
- B9
“With a maximum solar input of 300W at 11-60V, it's not designed to be used with large static panels.”
MakeUseOf — 'Anker Solix C800 Plus Review: The Ultimate Emergency and Camping Companion' · 2024-05 · [mixed]
- B10
“it doesn't have the outright storage or power to tackle more heavy duty appliances like kettles or some coffee machines.”
Trusted Reviews — 'Anker SOLIX C800 Plus Review: A great camping companion' · 2024-04 · [negative]
- B11
“The fan does ramp up during fast charging, but the noise is manageable at roughly arm's length.”
The Power Pick — 'Anker SOLIX C800 Plus Review: Camping Lights Meet Serious Power' · 2026-02 · [mixed]
- B12
“The 768Wh capacity sits in an awkward middle ground. It is significantly less than the 1,024Wh offered by the EcoFlow DELTA 3 Plus at the same $649 price.”
The Power Pick — 'Anker SOLIX C800 Plus Review: Camping Lights Meet Serious Power' · 2026-02 · [negative]
- B13
“I've come away from my time with the Anker SOLIX C800 Plus extremely impressed.”
AndroidGuys — 'Anker SOLIX C800 Plus Power Station Review' · 2024-05 · [positive]
- B15
“Through the app, you can easily install firmware updates that may include performance enhancements, bug fixes, or new functionalities.”
Greener Ideal — 'Anker SOLIX C800 Plus Portable Power Station Review' · 2024-08 · [positive]
Research compiled July 28, 2026.
Who Should Buy Which
Buy the RIVER 2 Max if you…
- →Buy the RIVER 2 Max if you want the lightest, cheapest way to keep phones, a laptop, a router, or a CPAP topped up through a short outage or a car-camping weekend — something you're recharging every day or two, not running unattended for days.
- →It's also the better buy on lifetime cost, not just sticker price: less to buy at $289 and less per kilowatt-hour across its life than the SOLIX C800 Plus. If budget and carry weight matter more to you than extra headroom, this is the one.
Buy the SOLIX C800 Plus if you…
- →Buy the SOLIX C800 Plus if the extra capacity, the quieter idle spec, and the 20ms switchover to battery power are worth roughly double the money and meaningfully more weight to carry, especially for overnight CPAP use, where it finishes with real margin instead of running close to the edge.
- →It's also the one to pick if this station is going to live near where you sleep or work rather than out in a garage. The lower published dB spec and faster failover both matter more up close, though owners report the fan gets noticeably louder under heavy load or fast chargingB1B11, so don't expect it to stay quiet at full tilt.
If neither fits
Skip both if your real need is a multi-day blackout, a full remote workday, a tailgate's worth of speakers and lights, or a van's daily draw. Every one of those needs several times more energy than either unit holds — in the worst case here, van life, that's over ten times what the RIVER 2 Max carries. Look for a station built for 2,100Wh-and-up loads, not either of these two.
The Bottom Line
Neither of these is a blackout or camping station, so don't buy either one hoping it'll be — five of six loads modeled here beat both. What's left is a value call, and the RIVER 2 Max wins it: cheaper to buy at $289 against $649, and cheaper to own at $0.19 per lifetime kWh against $0.28.
Pay the difference for the SOLIX C800 Plus only if you specifically want its CPAP-overnight margin or its quieter, faster-switching hardware. Otherwise, the lighter, cheaper box is the smarter buy. Go get the RIVER 2 Max.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Will either of these get me through a full camping weekend or a home blackout?
No. Modeled against roughly 2,100Wh of typical camping loads or 1,645Wh of blackout loads, both units run out well before the job is done — the RIVER 2 Max needs 483% of its usable capacity for the camping load, the SOLIX C800 Plus needs 322%. Plan on solar or generator recharging mid-trip, or buy a bigger station if this is your main use case.
Which one is better for running a CPAP overnight?
The SOLIX C800 Plus, by a real margin. It needs only 49% of its usable capacity for a night of CPAP use against the RIVER 2 Max's 74%, so it finishes with more room for a bad night or an extra device. Both technically get you through the night; this is the one scenario in this comparison where that's true.
Is the Anker SOLIX C800 Plus quieter than the EcoFlow RIVER 2 Max?
On paper, yes: 45 dB against 62 dB. But that's an idle measurement for both units, and reviewers say the SOLIX C800 Plus's fan becomes noticeably present during fast charging or sustained heavy loads. Field data on the RIVER 2 Max's real-world fan behavior is thin, so treat the spec gap as a starting point, not a guarantee of what you'll hear.
Which is cheaper to own over time, not just to buy?
The RIVER 2 Max. It's $289 against the SOLIX C800 Plus's $649 up front, and it stays cheaper across its life: $0.19 per lifetime kilowatt-hour against $0.28 for the SOLIX C800 Plus, on identical 3,000-cycle, 5-year-warranty terms.
Can either of these power a van or run daily household appliances?
No, not close. Van-life-style daily use in this test needs about 4,685Wh — the SOLIX C800 Plus would need 718% of its usable capacity and the RIVER 2 Max 1,077%. Both are sized for topping up small devices and covering short outages, not for running a home or a vehicle day to day.
Where to buy
EcoFlow RIVER 2 MaxPick
$289.00
$289.00 list · direct from EcoFlow
Anker SOLIX C800 Plus
$649.00
$649.00 list · direct from Anker
Prices may vary by retailer and are subject to change.