Head-to-head test
EcoFlow RIVER 2 Pro vs Goal Zero Yeti 500
For roughly the same $499 price, the RIVER 2 Pro packs 269Wh more capacity and charges more than twice as fast from solar — the Yeti 500 answers with a longer 4,000-cycle life and a noise rating it won't publish.
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
EcoFlow
RIVER 2 Pro
2,481Power Score · Appliance Class
$349.00 list · direct from EcoFlow
Goal Zero
Yeti 500
1,862Power Score · Device Hub
$499.95 list · direct from Goal Zero
Spec deltas
The RIVER 2 Pro and the Yeti 500 are priced almost identically — $499 against $499.95 — but the RIVER 2 Pro packs 269Wh more capacity, doubles the continuous output at 800W against 500W, and charges from solar at more than twice the Yeti 500's rate.
This is a cross-brand matchup between EcoFlow's volume playbook and Goal Zero's premium positioning, and the price tag doesn't reflect the usual premium math — the Yeti 500 costs the same as the RIVER 2 Pro while delivering less capacity and a slower charge. What it offers instead is a 4,000-cycle battery, a full 1,000 more cycles than the RIVER 2 Pro's 3,000.
Both are worth a look for anyone who wants their next power station to actually last, but only one of them tells you how loud it'll be while doing it.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
At $0.65 per Wh for the RIVER 2 Pro against $1.00 per Wh for the Yeti 500, the price parity is disguising a real capacity gap; Goal Zero's brand premium is showing up in cost-per-watt-hour, not in the sticker price.
The RIVER 2 Pro costs $499 with 768Wh of capacityThe Yeti 500 costs $499.95 with 499Wh of capacity
Why it mattersBuyers comparing these on price alone are missing that they're paying the same money for meaningfully less energy with the Yeti 500.
rated cycles
A battery rated for more cycles isn't automatically the cheaper one to own if it's also storing meaningfully less energy per cycle — the RIVER 2 Pro's capacity advantage outweighs the Yeti 500's longevity edge here.
The Yeti 500 is rated for 4,000 cycles against the RIVER 2 Pro's 3,000Cost per lifetime kWh comes out to $0.22 for the RIVER 2 Pro and $0.25 for the Yeti 500
Why it mattersBuyers chasing cycle-life numbers alone should still run the lifetime-cost math; a bigger, shorter-lived battery can beat a smaller, longer-lived one.
solar input
The Yeti 500 is actually the faster unit to top off from solar in absolute time, despite the RIVER 2 Pro's higher wattage ceiling, simply because there's less energy to replace.
The RIVER 2 Pro accepts up to 220W of solar inputThe Yeti 500 accepts up to 200W of solar input against a smaller 499Wh capacity
Why it mattersBuyers who value fast solar top-offs over raw capacity should weigh the Yeti 500's smaller tank as a genuine advantage, not just a limitation.
An undisclosed spec isn't evidence of quiet operation — it's an information gap a buyer has to accept on faith, while the RIVER 2 Pro's 62dB is at least a known, plannable number, even if it's the worse one.
The RIVER 2 Pro is rated at 62dB under load, confirmed by EcoFlow's own spec footnotesA2The Yeti 500 has no published noise rating at all
Why it mattersBuyers sensitive to fan noise should treat the Yeti 500's silence on this spec as a caution, not an assumption of quiet.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: Near-identical sticker price hides a real capacity and per-kWh gap favoring the RIVER 2 Pro.
cost / lifetime kWh
$499 against $499.95 is close enough to call a tie on sticker price, but the RIVER 2 Pro's $0.22 per lifetime kWh against the Yeti 500's $0.25 shows where the real value sits — 269Wh more capacity for essentially the same money.
Cost per warranty-year comes out identical at $100 for both, on the same 5-year term. The Yeti 500's extra cycle life doesn't translate into a cheaper warranty-year figure once the smaller capacity is factored in.
What the Specs Don't Tell You
Selected because: Noise disclosure, cycle life, and UPS speed are the concrete, spec-true differentiators.
rated cycles
The RIVER 2 Pro's 62dB rating under load is a real, documented downside — but at least it's documented. The Yeti 500 simply doesn't publish a noise figure, which is its own kind of gotcha for anyone planning to run it near a bed or desk.
The Yeti 500's 4,000-cycle rating against the RIVER 2 Pro's 3,000 is the clearest reason to consider it despite the smaller tank — translated into real years of daily use, that's a genuine longevity edge, even if the lifetime-cost math still favors the RIVER 2 Pro.
Your Life, Your Pick
Selected because: CPAP Overnight is the one scenario either wins; shows the RIVER 2 Pro's capacity margin.
Weekend Camping, the 8-Hour Blackout, Remote Workday, Tailgate Party, and Van Life Daily all defeat both units — neither has the capacity for those loads, and the gap between them doesn't change that outcome.
CPAP Overnight is the one job either handles comfortably, and the RIVER 2 Pro wins it on margin: 49% of its tank used against the Yeti 500's 75%. Both get the job done; the RIVER 2 Pro just has more room to spare.
Strengths & trade-offs
EcoFlow RIVER 2 Pro
Strengths
- +Costs $151 less
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Can receive complaints about fan noise under heavy load.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Yeti 500's 4,000, so it wears out sooner.
Goal Zero Yeti 500
Strengths
- +Lighter by 0.7 lb
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$151) 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
RIVER 2 Pro
Both are massively overpowered for CPAP — the RIVER 2 Pro finishes at 49% used against the Yeti 500's 75%. At a 40W load that reserve is comfort rather than necessity, so if a CPAP is the only thing you plan to run, price and portability should count for more than capacity does.
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: RIVER 2 Pro runs 3.2h vs 2.1h.
$349 list · direct from EcoFlow
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 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 RIVER 2 Pro
At essentially the same price — $499 against $499.95 — the RIVER 2 Pro delivers 269Wh more capacity, double the continuous output, and a solar ceiling more than twice as fast, and still ends up cheaper to own at $0.22 per lifetime kWh against $0.25. The Yeti 500's real advantage is cycle life: 4,000 cycles against 3,000, which stretches its usable years past the RIVER 2 Pro's. The honest catch on the RIVER 2 Pro is real: it's rated at 62dB under load, loud enough that owners have modded their units to quiet it, while Goal Zero doesn't publish a noise figure for the Yeti 500 at all — which isn't the same as being quiet, just unmeasured.
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 Goal Zero's current prices.
$349.00 list · direct from EcoFlow
or check the Yeti 500 price$499.95 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): 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 Yeti 500 rates 4.7/5 (81st 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.
RIVER 2 Pro: 62dB Under Load
62dB is about as loud as a normal conversation. If you're running a CPAP or sleeping near this unit, the fan noise may be noticeable. Most people find anything above 45dB disruptive for sleep.
UPS Speed: line-interactive (<10ms) vs basic standby
The Yeti 500 switches to battery in 10ms (line-interactive (<10ms)), while the RIVER 2 Pro takes 30ms (basic standby). Safe for desktop PCs, routers, and CPAP machines. NAS drives are protected. This matters if you're using it as a home UPS for always-on equipment.
Warranty Value Comparison
The RIVER 2 Pro gives you 14.3 years of warranty per $1,000 spent, vs the Yeti 500's 10 years. That's 1.4× more coverage per dollar. An underrated factor if you're keeping this unit for years.
Battery Lifespan in Real Years
The Yeti 500 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. After hitting the cycle limit, the battery doesn't die. It drops to ~80% original capacity, which is still very usable.
Yeti 500: Noise Level Not Disclosed
The RIVER 2 Pro publishes its noise level (62dB), but the Yeti 500 doesn't. Brands that don't disclose noise specs often have louder units. If noise matters to you (CPAP users, apartment dwellers), this is worth investigating before buying.
Full record above — the Test Desk pick is the RIVER 2 Pro.
Check RIVER 2 Pro price →or check the Yeti 500 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 $0.10 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
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.
Goal Zero
Ecosystem
Focused — 5-6 active portable power station models across Yeti and Yeti Pro series, plus Alta coolers, Nomad/Ranger solar panels, and vehicle integration kits
Support
US-based company (Salt Lake City, owned by NRG Energy). Historically considered premium support, but 2025-2026 reports describe long wait times, unresponsive email communication, and tickets going unaddressed for weeks. The "premium support justifies premium pricing" argument is weakening.
Community
Small but loyal — strong following in overlanding and preparedness communities. Official community forums were recently shuttered, frustrating long-time users.
App experience
Rated 4.4/5 iOS (~1,200 ratings) but recent reviews skew negative — recurring connectivity issues, crashes, and stability problems.
Unique strength
Pioneer of the portable power market — strongest brand heritage. US-based company with ruggedized, weather-resistant designs (IPX4). Integrated "Yeti-Ready" ecosystem with coolers, lights, and vehicle kits.
Worth knowing
Widely acknowledged as the most expensive brand (lowest Wh per dollar). Support quality has declined from its "premium" standard. Perceived as competitively stagnant vs. faster-innovating Chinese competitors. Reliability reports on newer models are concerning.
Analyst note
EcoFlow is the volume player here — a much larger product lineup and faster innovation cadence, against Goal Zero's smaller but focused catalog and stronger brand heritage in the outdoor and overlanding space. Support experiences for both have grown more mixed in recent years, so neither brand's name alone should be the deciding factor on this page.
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.
Yeti 500
FIXED CAPACITYFixed at 499Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 200W 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
The clearest pattern in the available RIVER 2 Pro commentary is fan noise: EcoFlow's own spec footnotes put it at up to 62dB during high-wattage charging or dischargingA2, and one owner documented modding the internal fan assembly on their own unit specifically to quiet itA1.
Beyond noise, coverage is thinner — a Facebook post asked whether running the RIVER 2 Pro as a UPS affects long-term battery life without a clear answer surfacing, and a van-life CPAP user reports it running an overnight load without issue via a DC-DC cableA3A4.
“Will using River 2 Pro as a UPS affect battery life ...”
Sources
ctrl-alt-rees.com
Goal Zero Yeti 500
Goal Zero markets the Yeti 500's LiFePO4 battery as rated for 4,000-plus cycles, translating to daily use for over a decade to 80% capacity, and reviewers have started to back that up: one 2026 long-term test logged 180-plus charge cycles with minimal observed degradationB1B4. Goal Zero also frames it explicitly as an outage-backup unit, capable of running a full-size fridge directly for up to six hours to prevent food lossB2.
Coverage doesn't extend to a documented noise rating, and none of the available field commentary addresses fan volume under load — a real gap in the evidence, not a claim that it's quiet.
“The Yeti 500's LiFePO4 battery is rated for 4,000+ cycles, meaning daily use for over 10 years (to 80% capacity at 75F).”
Sources
goalzero.com · rei.com · propaneva.com · portablepowernerd.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]
- High 4,000+ cycle LFP rating and outage-backup capability (including running a fridge for hours) are the standout points. [Yeti 500 · 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
“The Yeti 500's LiFePO4 battery is rated for 4,000+ cycles, meaning daily use for over 10 years (to 80% capacity at 75F).”
goalzero.com / rei.com — Yeti 500 LFP · 2026 · [positive]
- B2
“Acts as a backup power supply when the grid drops — you can plug a full-size refrigerator directly in for up to six hours of runtime to prevent food waste.”
goalzero.com — Yeti 500 backup · 2026 · [positive]
- B4
“One 2026 reviewer completed 180+ charge/discharge cycles with minimal observed degradation.”
portablepowernerd.com — Yeti 500 long-term review · 2026 · [positive]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the RIVER 2 Pro if you…
- →Buyers who want the most capacity and output for the money and can tolerate a documented 62dB fan under load
- →Anyone running a CPAP or similar overnight load who wants more margin left in the tank
Buy the Yeti 500 if you…
- →Buyers who prioritize cycle life above all else and want a battery rated to outlast the RIVER 2 Pro by 1,000 cycles
- →Anyone specifically planning fridge backup during outages, a use case Goal Zero markets and documents directly for this unit
If neither fits
Anyone needing genuine multi-day backup — fridge, router, and lights through an extended outage — should look at a unit well above 1,500Wh; both of these sit at over 250% of that scenario's typical draw.
The Bottom Line
At near-identical prices, the RIVER 2 Pro's bigger capacity and lower per-kWh cost make it the stronger overall buy, with a real, documented noise tradeoff as the price of that capacity.
If cycle life and Goal Zero's outage-backup framing matter more to you than raw capacity, the Yeti 500 is a defensible pick — just know you're accepting an undisclosed noise spec to get there.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the RIVER 2 Pro or the Yeti 500 the better value?
The RIVER 2 Pro, for most buyers. At essentially the same price, it delivers 269Wh more capacity and a lower cost per lifetime kWh at $0.22 against $0.25. The Yeti 500's advantage is its 4,000-cycle rating against the RIVER 2 Pro's 3,000, which matters most to buyers optimizing purely for longevity.
How loud is the Goal Zero Yeti 500?
Goal Zero doesn't publish a noise rating for the Yeti 500, so there's no documented figure to compare against the RIVER 2 Pro's known 62dB under load. That's a real information gap for noise-sensitive buyers, not evidence the Yeti 500 is quieter.
Which lasts longer, the RIVER 2 Pro or the Yeti 500?
The Yeti 500 is rated for more cycles — 4,000 against the RIVER 2 Pro's 3,000 — which Goal Zero frames as over a decade of daily use to 80% capacity. Despite that, the RIVER 2 Pro's bigger capacity still gives it a lower cost per lifetime kWh overall.
Can either of these run a fridge during an outage?
Goal Zero specifically markets the Yeti 500 for running a full-size fridge for up to six hours during an outage. The RIVER 2 Pro has a higher continuous output (800W against 500W) and more capacity, but neither is sized for a multi-day fridge-plus-router blackout scenario.
Where to buy
EcoFlow RIVER 2 ProPick
$349.00
$349.00 list · direct from EcoFlow
Goal Zero Yeti 500
$499.95
$499.95 list · direct from Goal Zero
Prices may vary by retailer and are subject to change.