Head-to-head test
EcoFlow RIVER 2 Pro vs Anker SOLIX C800
Same 768Wh, same 5-year warranty, same 1,600W surge ceiling — but the RIVER 2 Pro is now about $250 cheaper and 6.6 lbs lighter, so the C800's 400W-stronger output and 17dB-quieter fan have to justify a real premium on an identical battery.
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
EcoFlow
RIVER 2 Pro
2,481Power Score · Appliance Class
$349.00 list · direct from EcoFlow
Anker
SOLIX C800
2,245Power Score · Appliance Class
$599.00 list · direct from Anker
Spec deltas
The EcoFlow RIVER 2 Pro and Anker SOLIX C800 both hold 768Wh behind a 5-year warranty, which means the identical capacity line cancels out and the rest of the spec sheet has to decide it. The RIVER 2 Pro now costs $349 against the C800's $599 — a $250 gap on units storing the exact same energy.
That premium doesn't buy less machine, at least. The C800 outputs 1,200W continuous against the RIVER 2 Pro's 800W, accepts up to 300W of solar against 220W, and switches over in 20ms against 30ms. It's also the quieter unit: EcoFlow's own spec sheet lists 62dB under load, while independent testing puts the Anker at a mild hum even near its rated ceiling. The catch is that all of it now costs about $250 more on the same 768Wh.
The RIVER 2 Pro's cards are price and weight — about $250 less and 17.2 lbs against 23.8. The 6.6-lb difference is a real one if you're the person carrying this in and out of a vehicle every weekend, and the lower price now sits alongside it rather than against it.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Price
That $250 is what the C800's 400W more continuous output, 80W more solar input, and 10ms-faster switchover now cost on the same battery. Paying it makes sense only if you'll actually use that extra inverter and solar; otherwise the RIVER 2 Pro delivers the identical 768Wh for less.
Both units store exactly 768Wh behind a 5-year warrantyThe RIVER 2 Pro costs $349 against the C800's $599
Why it mattersAnyone who doesn't specifically need the C800's extra output or solar should treat the $250 gap as decisive and default to the RIVER 2 Pro.
The C800's reviewed noise floor sits closer to a mild hum even under a 1,500W space heater load — well above its own 1,200W rating. A unit you have to modify to tolerate at your desk is a worse everyday object than one that stays quiet without intervention.
EcoFlow's own product page discloses the RIVER 2 Pro can hit 62dB under heavy loadA2One owner performed a fan-replacement mod to quiet the unit down, describing it as effective but requiring cutting internal plasticA1
Why it mattersAnyone running this near a workspace, a nursery, or overnight should weight the noise gap heavily — it's the kind of spec you live with daily, not once.
weight
For anyone actually hiking this in rather than driving it to a campsite or tailgate, the RIVER 2 Pro's weight advantage is the whole ballgame — no amount of extra output or solar headroom matters if you never carry the unit that far.
The RIVER 2 Pro weighs 17.2 lbs against the C800's 23.8 lbs, a 6.6-lb gapOne reviewer flagged the C800's weight as too heavy for carrying far on foot, suggesting a sub-5-lb power bank instead for hikingB12
Why it mattersBackcountry or foot-carry buyers should take the RIVER 2 Pro seriously — it's now both the lighter and the cheaper unit, despite its output disadvantage; anyone loading this from a trunk should ignore the weight column entirely.
cost / lifetime kWh
There's no capacity or longevity story that explains the gap; it's the sticker price, full stop, and it compounds every single charge cycle for as long as either unit is in service.
The RIVER 2 Pro's cost per lifetime kWh works out to $0.15 against the C800's $0.26Both units are rated for 3,000 cycles and carry identical 5-year warranties
Why it mattersBuyers optimizing for total cost of ownership rather than upfront weight or brand loyalty should let this number close the decision.
The specific dimensions that decide these two units — everything else is a tie.
PowerScore Breakdown
Selected because: The C800 scores meaningfully higher (2,658 vs 2,183) despite identical capacity, driven by output, solar, and switchover.
overall power score
The engine puts the C800 at 2,658 against the RIVER 2 Pro's 2,183 — a real gap given both units store the same 768Wh. Output, solar ceiling, and switchover speed all tilt toward Anker, and none of them cost the C800 anything in capacity.
EcoFlow's levers are weight and, now, price — neither of which the power score rewards the way a spec sheet does. Scored on capability alone the Anker wins going away; scored on what you pay for the same 768Wh, the RIVER 2 Pro pulls the decision back.
Lifetime Value
Selected because: Identical capacity and warranty make the cost-per-kWh gap a clean, undiluted signal.
cost / lifetime kWh
With capacity and cycle count identical, cost per lifetime kWh becomes a straight read on price: $0.15 for the RIVER 2 Pro against $0.26 for the C800. That's not a rounding error across thousands of cycles — it's the same battery now costing more to own on the Anker side for no measurable reason.
Warranty-year cost tells the same story from a different angle: about $70 a year for the RIVER 2 Pro against $120 for the C800, on paper backed by the identical five years.
Portability & Form Factor
Selected because: The RIVER 2 Pro's only structural win is a 6.6-lb weight advantage, worth isolating.
weight
17.2 lbs versus 23.8 lbs is a 6.6-lb gap — enough to matter if you're the one hauling it, not enough to matter if it lives in a truck bed. One reviewer called the C800 too heavy to carry far on foot and pointed hikers toward something under 5 lbs insteadB12, which tells you which use case the Anker was never built for.
If you load from a trunk or a garage shelf, this section is close to irrelevant. If you're backpacking it in, it's the one column that overrides everything else on this page.
What the Specs Don't Tell You
Selected because: Four cards fire, including a rare surge-ratio advantage and a noise warning.
The surge card flags in the RIVER 2 Pro's favor on paper — both units share a 1,600W ceiling, but the RIVER 2 Pro reaches it from a smaller 800W continuous base, a 2x ratio against the C800's 1.33x. In practice that's a thinner margin working in the RIVER 2 Pro's direction, not a decisive one.
The noise card runs the other way and harder: EcoFlow discloses 62dB under load on its own spec sheetA2, a figure severe enough that one owner modded the fan rather than live with itA1. The C800's reviewed experience is a mild hum even past its rated ceilingB7. Same category, very different living room.
Brand Trust
Selected because: Cross-brand pair with genuinely different support trajectories worth surfacing.
EcoFlow runs the larger ecosystem and the more active innovation cadence, but support experiences are polarized — some owners get hassle-free replacements, others describe long waits or refurbished units sent back for new claims. A 2025 recall on an unrelated DELTA Max model and a since-paused subscription-paywall experiment are both worth knowing about.
Anker carries broader brand trust from its consumer-electronics business and historically excellent support, though recent SOLIX-specific reports describe AI-driven agents and complex return logistics for heavy units. Anker's Gen 2 lineup — which the C800 predates slightly — is also where the company's best dollar-per-Wh pricing shows up.
Strengths & trade-offs
EcoFlow RIVER 2 Pro
Strengths
- +Costs $250 less
- +Lighter by 6.6 lb
Trade-offs
- –Can receive complaints about fan noise under heavy load.
Anker SOLIX C800
Strengths
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$250) than the RIVER 2 Pro.
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
Either unit
Both are wildly overqualified for CPAP. You're using 49% or less. Save your money and buy whichever is cheaper; the extra capacity is completely wasted on a 40W overnight load. Put the savings toward a second battery for multi-night trips.
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
Dead heat — both run this 205W load for roughly 3.2h. Pick on price, weight, or ports.
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 15, 2026
Verdict: the RIVER 2 Pro
Both units store 768Wh and both carry a 5-year warranty, which strips the comparison down to what each company did with that identical foundation — and to what each now costs. EcoFlow's RIVER 2 Pro is $349 with 800W continuous output, a 220W solar ceiling, a 62dB noise floor under load, and a 30ms switchover — and it's 6.6 lbs lighter. Anker's C800 is $599 with 1,200W of continuous output, a 300W solar ceiling, a 45dB noise floor, and a 20ms switchover. The C800 still wins those four capability columns, but they now cost about $250 more on the same battery, while the RIVER 2 Pro wins price and weight. Buyers who will actually use the C800's extra output or solar can pay for it; everyone else should take the cheaper, lighter RIVER 2 Pro.
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.
$349.00 list · direct from EcoFlow
or check the SOLIX C800 price$599.00 list
Written by Ian Schneider, Solar & Off-Grid 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): 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 Pro rates 4.5/5 (72nd percentile of 19 Compact-class units), and SOLIX C800 rates 4.1/5 (50th 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.
62dB Is EcoFlow's Own Number
That figure comes from the RIVER 2 Pro's own spec sheet, not a hostile third party, and it applies specifically to high-wattage charging and discharging. The C800's reviewed experience stays a mild hum even past its rated ceiling.
Same Surge Ceiling, Thinner Base
Both units cap out at 1,600W of surge, but the RIVER 2 Pro reaches it from a smaller 800W continuous base — a slightly wider surge-to-continuous ratio. It's a real edge on paper and a thin one in practice.
20ms vs 30ms
Both are basic-standby switchover speeds rather than line-interactive, and the 10ms gap is unlikely to matter for anything less sensitive than networking gear.
Same Five Years, Different Annual Cost
Identical warranty terms mean the roughly $50-per-warranty-year gap is purely a function of the C800's higher price on the same capacity.
Full record above — the Test Desk pick is the RIVER 2 Pro.
Check RIVER 2 Pro price →or check the SOLIX C800 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 Pro wins on both sticker price and long-term value. At $0.15/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Delivers each lifetime kWh for $0.11 less — check the RIVER 2 Pro price →
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
The deepest product ecosystem in the category and the fastest-charging technology EcoFlow has shipped, though this unit's own charge speed doesn't showcase it.
Worth knowing
A 2025 recall on the unrelated DELTA Max 2000 and a since-abandoned subscription-paywall test are both worth a quick search before buying in.
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
Broad consumer-electronics brand trust and, on Anker's newer Gen 2 units, some of the best dollar-per-Wh pricing in the market.
Worth knowing
Support quality is trending down from its historically excellent baseline — recent reports describe generic AI-agent responses and complicated return logistics for heavier units.
Analyst note
EcoFlow's edge is ecosystem depth if you're already invested in it — plus, at current prices, the lower cost on the same 768Wh; Anker's edge is that the C800 ships more raw capability (output, solar, switchover, quiet), though that now costs about $250 more on the identical battery.
Growth path
RIVER 2 Pro
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 220W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
SOLIX C800
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 RIVER 2 Pro 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 Pro
Owner-level detail on the RIVER 2 Pro specifically — as opposed to the broader RIVER 2 line — is thin online, but the noise complaint is consistent and comes from EcoFlow itself: the spec sheet discloses up to 62dB during high-wattage charging or dischargingA2, and at least one owner found it bad enough to open the case and swap the fan, at the cost of cutting away internal plastic to make roomA1.
A van-life CPAP user reported the unit running a ResMed AirSense 11 overnight without issue through a DC-DC cableA4, and a separate Facebook post asked whether running it as a UPS shortens battery lifeA3 — a fair question EcoFlow's materials don't clearly answer. Treat this as thin, mixed field data rather than a verdict.
“Will using River 2 Pro as a UPS affect battery life ...”
Sources
ctrl-alt-rees.com
Anker SOLIX C800
Coverage of the C800 leans on independent review testing rather than owner-forum chatter, but it's consistent: the unit survived a 30-inch tailgate drop onto gravel with only minor scuffingB1, ran a 1,000W coffee maker for 42 minutes straightB3, and briefly powered a 1,500W space heater — 300W past its own rating — for 25 minutes before throttlingB8.
The recharge story is the standout: a full charge in 58 minutes on a 600W AC adapter, faster than rivals like the Jackery 700 at over two hoursB9B15. The honest catches are real too — no IP weather ratingB2, a 1,200W output that won't sustain a full-size fridge's startup drawB11, and a weight reviewers repeatedly call heavy for foot-carry useB4B12.
“We dropped it from a tailgate (30 inches) onto gravel—only minor scuffing, no damage.”
Sources
backuppowerhub.com · portablepowergeek.co.uk · batteryskills.com · batteryessence.com · toolsandtoys.net · bikmantech.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
- Fan noise at high wattage charging/discharging is a consistent owner and manufacturer-acknowledged complaint, severe enough that some owners physically mod the unit with quieter fans. [RIVER 2 Pro · 2 entries]
- Build quality/chassis is repeatedly called solid and drop-resistant, but reviewers flag the lack of an IP weather rating as a real-world caveat for outdoor use. [SOLIX C800 · 3 entries]
- The 58-minute AC fast-recharge is the single most-mentioned standout feature, praised as faster than rivals like the Jackery 700. [SOLIX C800 · 2 entries]
- Reviewers note the unit can briefly exceed its 1200W rating for heavy appliances, but caution it can't sustain full-size continuous loads like a full-size fridge. [SOLIX C800 · 2 entries]
- Long 5-year warranty and strong retailer star ratings are cited as reassurance/value signals. [SOLIX C800 · 2 entries]
- Weight (~23-24 lbs) is repeatedly flagged as a downside relative to lighter rivals despite the compact footprint. [SOLIX C800 · 2 entries]
- A1
“I've since performed the same mod on my RIVER 2 PRO and it works great for that unit, too - although it did involve cutting away some of the internal plastic.”
ctrl-alt-rees.com blog — 'EcoFlow RIVER 2 Noisy Fan Fix!' · 2022-11-17 · [negative]
- A2
“When charging and discharging at high wattage, RIVER 2 Max and RIVER 2 Pro may make a noise up to 62db.”
EcoFlow official product page — RIVER 2 Series specs/FAQ footnotes · unknown · [negative]
- A3
“Will using River 2 Pro as a UPS affect battery life ...”
Facebook — EcoFlow Club group post title · unknown · [mixed]
- A4
“I'm very new to CPAP (1 week) and I live in a van. I have solar and a decent battery bank and I've got the ResMed DC-DC cable which powers my AirSense 11 AutoSet overnight no problem.”
Apnea Board forum — '[Equipment] EcoFlow River 2 Pro' thread · 2025-07 · [mixed]
- B1
“We dropped it from a tailgate (30 inches) onto gravel—only minor scuffing, no damage.”
backuppowerhub.com — Anker SOLIX C800 Review: Best Budget Power Station? · 2025-12 · [positive]
- B2
“However, the C800 lacks IP weather rating. Keep it covered when camping.”
backuppowerhub.com — Anker SOLIX C800 Review: Best Budget Power Station? · 2025-12 · [negative]
- B3
“A 1,000W coffee maker ran 42 minutes straight.”
backuppowerhub.com — Anker SOLIX C800 Review: Best Budget Power Station? · 2025-12 · [positive]
- B4
“The Solix C800 is nearly 3kg heavier than the River 2 Pro, and 2.5kg heavier than the Grecel T1000.”
portablepowergeek.co.uk — Anker Solix C800 Review · 2024-11 · [negative]
- B7
“Zero fan noise under 500W loads, unlike louder competitors (e.g., Bluetti EB55). Only a mild hum at max load.”
batteryskills.com — Anker SOLIX C800 Portable Power Station Review · 2025-10 · [positive]
- B8
“Powered a 1500W space heater (surpassing its 1200W rating) for 25 minutes before throttling—unexpectedly robust for its size.”
batteryskills.com — Anker SOLIX C800 Portable Power Station Review · 2025-10 · [positive]
- B9
“Achieved a full charge in 58 minutes using a 600W AC adapter (matching Anker's claim), while competitors like the Jackery 700 take 2+ hours.”
batteryskills.com — Anker SOLIX C800 Portable Power Station Review · 2025-10 · [positive]
- B11
“The 1200W output won't run a full-size refrigerator (700-800W startup) plus other essentials for long.”
batteryessence.com — Anker SOLIX C800 Portable Power Station 768Wh Review · 2026-03 · [negative]
- B12
“At 23.15 lbs (10.5 kg), this is too heavy for carrying far on foot. For hiking, a smaller, lighter power bank under 5 lbs is a better fit.”
batteryessence.com — Anker SOLIX C800 Portable Power Station 768Wh Review · 2026-03 · [negative]
- B15
“The 58-minute fast charge means you can drain it all evening and have it ready by morning. No more planning days ahead for recharging.”
backuppowerhub.com — Anker SOLIX C800 Review: Best Budget Power Station? · 2025-12 · [positive]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the RIVER 2 Pro if you…
- →You want the same 768Wh for about $250 less — the RIVER 2 Pro is now both cheaper up front and cheaper to own.
- →You're carrying this on foot regularly — a 6.6-lb difference matters every single trip, and the RIVER 2 Pro now pairs it with the lower price.
- →You've already got EcoFlow's ecosystem (panels, other units) and want to stay inside it — and now you don't pay a premium to do so.
Buy the SOLIX C800 if you…
- →You specifically want more inverter and more solar on the exact same 768Wh and will pay about $250 more for it — the C800 wins output, solar ceiling, switchover speed, and noise, just no longer price.
- →You're running this near where you sleep or work, where a 17dB noise gap is something you notice every day, not once.
If neither fits
If the actual job is a full weekend camping trip (around 2,100Wh) or an 8-hour multi-appliance blackout (around 1,645Wh), both units fall well short of that math — neither gets there even doubled. Look at a 1,500Wh-plus unit from either brand instead.
The Bottom Line
Strip away the identical 768Wh and 5-year warranty, and this comes down to what the C800's roughly $250 premium buys: more output, more solar, a faster switchover, and a quieter room. On the EcoFlow side, the same battery for $250 less and 6.6 fewer pounds to carry.
Take the C800 if you'll actually use its extra output or solar and consider that worth the premium. Otherwise the RIVER 2 Pro delivers the same battery for less money and less weight, and for most buyers that's the call.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
RIVER 2 Pro or SOLIX C800 — same capacity, which is the better buy?
For most buyers, the RIVER 2 Pro. It now stores the identical 768Wh for about $250 less and is 6.6 lbs lighter. The C800 counters with 400W more continuous output, more solar, a faster switchover, and a quieter fan under load — worth it only if you'll actually use them.
Is the RIVER 2 Pro really that loud?
EcoFlow's own spec sheet lists up to 62dB during high-wattage charging or discharging, and at least one owner modded the fan to quiet it down. That's meaningfully louder than the C800's reviewed experience, which stays a mild hum even past its rated output.
Which one is lighter to carry?
The RIVER 2 Pro, at 17.2 lbs against the C800's 23.8 lbs — a 6.6-lb gap that matters if you're hauling it on foot and matters much less if it's living in a vehicle.
Can either of these run a small fridge?
Neither is a confident yes. The C800's 1,200W rating briefly exceeded a 1,500W space heater load but reviewers flag it as insufficient for a full-size fridge's sustained draw; the RIVER 2 Pro's 800W continuous rating is lower still.
Which one recharges faster?
The C800 on both fronts — a 300W solar ceiling against 220W, and independently tested AC recharge in 58 minutes, notably faster than budget rivals.
Where to buy
EcoFlow RIVER 2 ProPick
$349.00
$349.00 list · direct from EcoFlow
Anker SOLIX C800
$599.00
$599.00 list · direct from Anker
Prices may vary by retailer and are subject to change.