Head-to-head test
EcoFlow RIVER 2 Pro vs DJI Power 500
The Power 500 is the cheaper box, and the RIVER 2 Pro spends the difference on half again the battery, twice the AC outlets and real surge headroom, so the DJI only wins for someone whose whole load fits inside 512Wh.
Full profiles: EcoFlow RIVER 2 Pro → · DJI Power 500 →
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
Spec deltas
The RIVER 2 Pro costs $50 more and carries half again the battery: 768Wh against the Power 500's 512Wh. Add four AC outlets to the DJI's two, a 12V car socket where the DJI has none, and a 1,600W surge rating against a flat 1,000W, and the extra money has plenty to show for itself.
The DJI's case is real, and narrower. It holds 1,000W continuous to the RIVER's 800W, it's rated for 4,000 cycles to 3,000, and it takes 300W of solar to 220W, though that last one needs a separate DJI adapter before a panel can plug in at all. Its quiet rating is the spec people notice first and the one to read most carefully: DJI publishes a best case, EcoFlow publishes a ceiling under heavy load, so the two numbers were never measuring the same thing.
So the question is whether you'll use the extra battery. Every scenario on this page that defeats both units defeats the DJI by more, and the one both finish, a CPAP night, the DJI finishes with 115Wh to spare. If your list is that small, buy the Power 500 and keep the $50. If it isn't, buy the RIVER 2 Pro.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
Both units start every peak load on this page, so capacity alone decides when the evening ends, and the RIVER 2 Pro ends it later every single time. Across a 910Wh remote workday it gets you 72% of the way to the DJI's 48%, which is the difference between working into the afternoon and hunting for an outlet before lunch is over. That is what the $50 buys, and it buys it exactly where you'd notice.
RIVER 2 Pro: 768Wh, 653Wh usable at the engine's flat 85% deratePower 500: 512Wh, 435Wh usableTailgate Party needs 670Wh: RIVER 2 Pro 17Wh short, Power 500 235Wh shortRemote Workday needs 910Wh: RIVER 2 Pro about 72% covered, Power 500 about 48%
Why it mattersIf your list ever brushes past 435Wh, the cheaper unit is the one that quits first, so pay the difference.
rated cycles
But you only collect on cycles you actually use. Run either one twice a week and the rated count outlasts the 5-year warranty by more than two decades, 29 years on the RIVER and 38 on the DJI. The capacity you collect on every time you unplug it, and on day one the RIVER is the cheaper watt-hour by 13 cents. The tie only breaks in the DJI's favour for someone draining it daily for a decade.
Power 500: 4,000 cycles of 512Wh = 2,048 kWh lifetimeRIVER 2 Pro: 3,000 cycles of 768Wh = 2,304 kWh lifetimeBoth work out to 15 cents per lifetime kWh; day one, the RIVER is 45 cents per Wh and the DJI 58At twice-weekly use the rated cycles last 38 years (Power 500) and 29 years (RIVER 2 Pro); each carries a 5-year warranty
Why it mattersUnless you'll cycle it every day for years, set the 4,000-cycle headline aside and compare the batteries you get on day one.
continuous output
On the DJI, 'as long as the battery lasts' is short: 435Wh at 1,000W is under half an hour flat out. So its continuous edge is real for a brief resistive load between 800W and 1,000W and not much else. The RIVER's headroom matters for the loads people leave running for hours, like a fridge, which pulls two to three times its running draw at startup. Testers did see 1,500W go through the Power 500 brieflyB3, which says DJI rates it conservatively, but one bench result is not a rating you can plan a cold fridge around.
RIVER 2 Pro: 800W continuous, 1,600W surge (2x)Power 500: 1,000W continuous, no published surge above 1,000W (1x)Power 500 usable energy: 435WhTesters ran 905W through the Power 500 and briefly saw 1,500W pass its 1,000W ratingB3
Why it mattersIf a fridge or pump is on the list, take the published 1,600W; if it's a 900W appliance for a few minutes at a time, the DJI's 1,000W is the one that holds.
What tips it is the evidence trail. The RIVER's fan has one: EcoFlow concedes the 62dB figure under loadA2, and one owner disliked the fan enough to swap it, cutting away internal plastic to make roomA1. The DJI's reviewer coverage raises no noise complaint at allB3B4. That's why the CPAP row goes to the Power 500. The one counterweight is a cable: if your machine runs from a 12V DC lead, only the RIVER has a car socket to plug it into.
EcoFlow footnotes up to 62dB when the RIVER 2 Pro charges or discharges at high wattageA2DJI publishes 25dB for the Power 500 as its best caseCPAP Overnight needs 320Wh: 49% of the RIVER 2 Pro's usable battery, 74% of the Power 500'sRIVER 2 Pro has one 12V car outlet; the Power 500's record shows none
Why it mattersAn AC-powered CPAP at the bedside points to the Power 500; a 12V CPAP lead, or a station that lives outside the bedroom, takes the RIVER's fan off the table.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: Half again the battery is what the extra money buys, and it decides when every list on this page runs out.
continuous output
256Wh of nameplate difference becomes 218Wh you can actually use: 653Wh on the RIVER 2 Pro against 435Wh on the Power 500, after the same 85% derate on both. Picture a Power 500 with half of a second one bolted to its side. That's the RIVER, and that's the item the $50 pays for.
It matters most at the margins, which is where small stations live. A 670Wh tailgate list leaves the RIVER 17Wh short, a rounding error you fix by switching something off a little early. The Power 500 is 235Wh short, which isn't a rounding error; it's about a third of the list. If your loads sit anywhere near 435Wh, the bigger battery is the one you'll be glad you carried.
Lifetime Value
Selected because: Four thousand small cycles and three thousand big ones land at the same cost per lifetime kWh, so the day-one battery breaks the tie.
On day one the RIVER is the cheaper watt-hour, 45 cents against 58. Over a full rated life the DJI catches up, because 4,000 cycles of 512Wh deliver 2,048 kWh against 2,304 kWh from 3,000 cycles of 768Wh, and both work out to 15 cents per lifetime kWh. A dead heat, reached from opposite ends.
The catch in the DJI's half of that tie is time. Its cycle advantage only pays out if you spend the cycles, and at twice-weekly use the rated counts run 38 years on the DJI and 29 on the RIVER, both far past the 5-year warranty each carries. Daily users get closer to collecting, at 11 years against 8.2. Everyone else is choosing between a battery they'll drain and a cycle count they won't, and that choice goes to the RIVER.
What the Specs Don't Tell You
Selected because: Five cards fire, and the two that matter, surge and fan noise, pull in opposite directions.
rated cycles
Five cards fire and two of them matter. Surge goes to the RIVER: 1,600W of peak on an 800W inverter, against a Power 500 that documents nothing above its 1,000W continuous. Noise goes against it, and it's the RIVER's honest weakness. EcoFlow's own footnote puts the fan at up to 62dB when it charges or discharges hardA2, and the DJI's 25dB is a best case, so the real gap at a light load is unknown but unlikely to favour the EcoFlow.
The other three are closer than they look. Warranty is 5 years on each, with the DJI's full term tied to buying from DJI's own store. Switchover is rated no worse than 20ms on the DJI and no worse than 30ms on the RIVER, which only matters for a desktop PC whose power supply can't ride out the longer gap. Cycle life is the DJI's on paper and a draw in delivered energy. Read the surge and noise cards; the rest is fine print.
Your Life, Your Pick
Selected because: The DJI comes up further short on every list it fails, and takes the one night both units finish.
The DJI comes up 218Wh further short on every list it fails, because that's the gap between 653Wh and 435Wh usable and the lists don't care whose logo is on the box. An 8-hour blackout wants 1,645Wh, so the RIVER covers about 40% and the DJI 26%. Neither is a blackout plan. One is a longer partial plan.
The one row both finish is the CPAP night, and it goes to the DJI: 320Wh is 74% of its usable battery with 115Wh to spare, and the RIVER's fan is the one with a documented noise complaintA1A2. Five of six rows outrun both units, so read this table as a sizing test. If your list looks like the CPAP row, the Power 500 is enough. If it looks like any other row, neither is, and the RIVER is less not-enough.
Strengths & trade-offs
EcoFlow RIVER 2 Pro
Strengths
- +Larger battery capacity
Trade-offs
- –Can receive complaints about fan noise under heavy load.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Power 500's 4,000, so it wears out sooner.
DJI Power 500
Strengths
- +Costs $50 less
- +Lighter by 1.1 lb
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
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 covers this scenario's 2,100Wh: the RIVER 2 Pro comes up 1,447Wh short (about 31% covered), the Power 500 1,665Wh (21%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
Neither unit
Neither unit covers this scenario's 1,645Wh: the RIVER 2 Pro comes up 992Wh short (about 40% covered), the Power 500 1,210Wh (26%). Treat this as partial cover — enough for the essentials in it, not the whole list.
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
A CPAP is about 40W for eight hours, so both cover the night, though not twice: the Power 500 gets through it with 115Wh to spare. The only published difference is fan noise, and it can't settle this: the Power 500 is rated 25dB and the RIVER 2 Pro 62dB, but the Power 500's is its maker's best case and the RIVER 2 Pro's is EcoFlow's maximum under heavy charge and discharge, so at a 40W draw the real gap can only be narrower than it looks, and may even run the other way. Neither settles which box is quieter at a bedside. Buy whichever is cheaper or easier to carry.
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 covers this scenario's 910Wh: the RIVER 2 Pro comes up 257Wh short (about 72% covered), the Power 500 475Wh (48%). Treat this as partial cover — enough for the essentials in it, not the whole list.
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 quite finishes the 670Wh list, but they miss by very different amounts. The RIVER 2 Pro comes up 17Wh short, which switching one thing off a little early covers. The Power 500 comes up 235Wh short, about a third of the evening, and no amount of unplugging gets that back.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Neither unit
Neither unit covers this scenario's 4,685Wh: the RIVER 2 Pro comes up 4,032Wh short (about 14% covered), the Power 500 4,250Wh (9%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: RIVER 2 Pro runs 3.2h vs 2.1h.
$349 list · direct from EcoFlow
Planning for more than this? Describe your whole setup and get it sized →
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–43.5hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–8.7hHigh-Draw Appliances
These reveal the real limitsscale 0–0.4h¹ 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
October 11, 2026
Verdict: the EcoFlow RIVER 2 Pro
Take the RIVER 2 Pro, and know what the extra $50 buys: 768Wh against 512Wh, four AC outlets against two, a 12V car socket the DJI doesn't have, and a 1,600W surge rating against a Power 500 that publishes none above its 1,000W continuous. Over their rated lives the two work out to the same cost per lifetime kWh, so the premium buys a bigger battery at no worse a rate. The Power 500 is the right buy in three cases: everything you run fits comfortably in its 435Wh of usable energy (a CPAP night, phones, a laptop, drone batteries), you run a resistive appliance that sits between 800W and 1,000W, or you already own DJI gear. Outside those, the cheaper box is simply the one that runs out first.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of October 11, 2026. The links below open EcoFlow's and DJI's current prices.
$389.00 · direct from EcoFlow
Last checked 28 days ago. Prices move — check before you buy.
or check the Power 500 price$299.00 list
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated October 11, 2026
Black Friday · 26 days out
Prices to beat:RIVER 2 Pro $349Power 500 $299
We have never seen either discounted, so any real cut would be a first.
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 4.7/5 (84th percentile of 20 Compact-class units), and Power 500 rates 4.6/5 (74th percentile of 20 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.
RIVER 2 Pro: 62dB Is a Ceiling
EcoFlow publishes 62dB as the most the RIVER 2 Pro reaches while charging or discharging at high wattage, roughly normal-conversation loud. DJI publishes 25dB for the Power 500 as a best case. One is a ceiling and the other a floor, so the true gap at a light load is unknown rather than the difference between the two numbers. In a garage or a truck bed this card costs nothing; beside a bed during a fast charge, it's the reason to think twice.
1,600W Peak on an 800W Inverter
The RIVER 2 Pro doubles its 800W rating for startup surges, reaching 1,600W, which clears the 2x rule of thumb for fridge and pump compressors. The Power 500 runs a higher 1,000W continuous but publishes no surge above it, so plan its motor-starting at face value. Steady loads between 800W and 1,000W belong to the DJI; anything with a compressor belongs to the RIVER.
UPS Switchover: ≤20ms vs ≤30ms
Both list a UPS mode, at different rated speeds. The Power 500 is rated ≤20ms — fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. The RIVER 2 Pro is rated ≤30ms — a transfer this long is one many desktops will NOT ride through, so plan on reboots for sensitive gear. If a computer with unsaved work is the thing being protected, the stated class is worth the attention; nothing here is a lab result.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The Power 500's figure is a maximum rather than a guarantee — it depends on buying from DJI's own store, which is where the full five years is advertised.
4,000 Small Cycles, 3,000 Big Ones
The Power 500's 4,000 cycles beat the RIVER 2 Pro's 3,000, but a cycle is 512Wh on one and 768Wh on the other: 2,048 kWh against 2,304 kWh over the rated life. In years, daily use runs 11 against 8.2 and twice-weekly use 38 against 29, all well past the 5-year warranty on each. Count the energy and the years you'll actually use. After the rated count the pack drops to about 80% of its original capacity rather than dying.
Full record above — the Test Desk pick is the RIVER 2 Pro.
Check RIVER 2 Pro price →or check the Power 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
Both units cost the same to own over their rated lives — $0.15/kWh each. Lifetime cost can't separate them, so decide on the sticker price and everything else. One caution on the lifespan row: the Power 500 takes longer to reach its cycle rating, but a cycle moves a different amount of energy on each unit — the RIVER 2 Pro still delivers more over its shorter horizon (2,304 vs 2,048 kWh). Years measure wear, not usefulness.
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. At the top of the range sit two whole-home paths: the TITAN line, one 5 kWh unit that grows to 30 kWh, and the DELTA Pro Ultra platform, which stacks batteries and inverters further — flagship paths, not line-wide features.
Worth knowing
Tested subscription paywalls for advanced app features in early 2025 before community backlash paused the plan. No parts or service offered out of warranty.
DJI
Ecosystem
New entrant (2024) — five power station models to date: Power 500, Power 1000 (since superseded by the V2 but still sold), Power 1000 V2, Power 1000 Mini, Power 2000. Buying a "Power 1000" listing? Check which revision it actually ships.
Support
Leveraging DJI's established global support and repair center network from the drone business. Generally positive reputation inherited from drone operations, but limited power-station-specific track record.
Community
No dedicated power station community yet. Discussions happen within r/dji (~250K members, mostly drone users). Very small power-specific presence on Facebook and forums.
App experience
Rated 3.5/5 iOS and Android (DJI Home app ratings reflect entire DJI ecosystem including drones/cameras, not power-station-specific). Users report the on-device screen is more reliable than the app.
Unique strength
Runs quiet — 23-30dB published on most of the range (manufacturer best-case figures), at the quiet end of the category; our record carries no figure for the Power 1000 V2. Fast wall charging, quickest on the Power 1000 V2 at ~56 min — that figure is the V2's, not the whole line's. 700+ battery patents from drone R&D. SDC ports for ultra-fast DJI drone charging. Premium industrial design and build quality. LFP batteries rated for 4,000+ cycles.
Worth knowing
A recent entrant to power stations, arriving long after the established players, so there is less long-term field data than for EcoFlow, Jackery or BLUETTI — though DJI brings a deep hardware track record from drones. No built-in solar charge controller (requires a separate proprietary adapter). SDC ports are proprietary to the DJI ecosystem, so their fast-charging advantage mostly benefits people who already own DJI gear. Battery expansion is available on the newer Power 2000 and Power 1000 V2, but not on the earlier Power 1000 or Power 500 — check the specific model.
Analyst note
EcoFlow brings the bigger catalogue, 12-15 models, and the bigger owner community, roughly 31K on r/Ecoflow_community, with a support record that splits between prepaid-label replacements and long waits. DJI arrived in 2024 and leans on the repair network it built for drones, with no power-station community of its own yet. Both warrant this unit for 5 years, DJI's full term via its own store, and EcoFlow offers no parts or service once that runs out. Neither badge should move this decision. The battery should.
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.
Power 500
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 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
Our research turned up thin model-verified commentary on the RIVER 2 Pro, because most discussion blurs it with the base RIVER 2 and the RIVER 2 MaxA0. What survives is mostly about the fan. EcoFlow's own spec footnote concedes up to 62dB when the RIVER 2 series charges or discharges at high wattageA2, and one owner swapped the fan in their RIVER 2 Pro, a job that meant cutting away internal plastic to make the new one fitA1. A maker's footnote and a hobby knife pointing at the same part is about as clear as a thin ledger gets.
Beyond that, the record is a question and a hint. One Facebook post asks whether running it as a UPS wears the battery, with no answer attachedA3. A van-dwelling new CPAP user in an Apnea Board thread about this unit reports an AirSense 11 running overnight on a ResMed DC-DC cable, though the post describes a solar-and-battery-bank setup generally, so treat it as encouraging rather than proofA4.
“Will using River 2 Pro as a UPS affect battery life ...”
Sources
ctrl-alt-rees.com
DJI Power 500
What exists on the Power 500 comes from reviewers rather than long-term ownersB0. Testers ran a 905W load through it, saw it briefly carry 1,500W past its 1,000W rating, and found it more efficient than DJI's larger Power 1000B3. Review coverage quotes its LFP cells at 3,000 to 4,000 cycles, roughly 10 years of use, a touch softer than the 4,000 on our recordB1.
The recurring gripe is the box contents: a wall plug and nothing else, with no solar adapter and no car-charging cableB4. Since solar input needs a separate DJI adapter in the first place, that's a purchase to price in before comparing recharge speeds. On the plus side, reviewers single out how easy it is to carryB2, which at 16.1 lbs is fair, if barely a pound lighter than the RIVER.
“A 512Wh LFP battery with up to 1,000W output; the automotive-grade LFP cells are rated up to 3,000-4,000 cycles for roughly a 10-year lifespan.”
Sources
dji.com · thesolarlab.com · techradar.com · views-sounds.com · t3.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]
- Light, efficient LFP unit with strong real-world output and drone-pilot appeal; the caveat is minimal included accessories. [Power 500 · 3 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
“A 512Wh LFP battery with up to 1,000W output; the automotive-grade LFP cells are rated up to 3,000-4,000 cycles for roughly a 10-year lifespan.”
dji.com / thesolarlab.com — Power 500 review · 2026 · [positive]
- B2
“Weighs only about 7.3 kg, making it easy to transport.”
dji.com / techradar.com — Power 500 review · 2026 · [positive]
- B3
“In testing it ran a 905W load and briefly handled a 1,500W surge above its 1,000W rating; reviewers found it outperformed the larger DJI Power 1000 in efficiency testing.”
thesolarlab.com / views-sounds.com — Power 500 review · 2026 · [positive]
- B4
“Reviews are positive overall, though one noted it ships with only a wall plug — no solar adapters or car-charging cables included.”
t3.com / techradar.com — Power 500 review · 2026 · [mixed]
Research compiled October 11, 2026.
What Owners Actually Report
Drawn from 35 comments on independent review channels — not from retailer reviews, which skew to the first week of ownership. Each line is our summary of one commenter's claim, linked to the original. We record what they said, including where it contradicts the spec sheet.
EcoFlow RIVER 2 Pro
32 claims from 21 comments · 27 from owners · 8 with figures
- Runtime
- 5 · 0% negative
- Size & weight
- 2 · 0% negative
- Solar input
- 2 · 0% negative
- Inverter & surge
- 3 · 23% negative
- App & firmware
- 3 · 0% negative
What owners complain about
Wildly fluctuating DC output on two separate units bought from different retailers.
Build qualityowner1 agreedsource →
Does tend to self-discharge, so he keeps it on the low 100W power setting.
Idle drainowner3 agreedsource →
Unit would not power on within a week of purchase despite a full charge.
Durabilityownersource →
What owners praise
DJI Power 500
16 claims from 14 comments · 7 from owners · 3 with figures
- Price & value
- 5 · 6% negative
- Inverter & surge
- 2 · 0% negative
- Runtime
- 3 · 32% negative
- Solar input
- 2 · 0% negative
- Durability
- 1 · 0% negative
What owners complain about
Wishes he could get one in Barbados.
Shipping6 agreedsource →
512Wh will not run a household fridge for 24 hours; maybe around six.
Runtime46 agreedsource →
550 euro in Europe without any accessories is far too high.
Price & value4 agreedsource →
What owners praise
Ran an electric blanket and streaming overnight with plenty left for morning coffee.
Runtimeowner5 agreedsource →
A semi driver runs a microwave off it in a truck with no inverter; worth its weight in gold.
Inverter & surgeowner15 agreedsource →
For $179 more than the Anker he got a far more usable product at $379.
Price & valuemeasuredowner1 agreedsource →
Claims are weighted by how specific they are, whether the commenter owns the unit, and how many readers agreed. Comments that mention a product under a rival's review count for more, because the commenter had no reason to be there. This is what buyers report, not our test results — for measurements we ran ourselves, see the methodology.
Who Should Buy Which
Buy the RIVER 2 Pro if you…
- →You're stocking the hall closet for outages or the truck for weekends, and your list won't fit in 435Wh. The RIVER's 653Wh usable gets you 72% of a remote workday against the DJI's 48%, and that difference is the extra money working.
- →There's a fridge, a pump or a corded tool on the list. A 1,600W surge on an 800W inverter is the headroom a compressor eats at startup; the Power 500 documents none above its 1,000W.
- →You plug in a lot at once, or run 12V gear. Four AC outlets against two, three USB-A against two, and a car socket the DJI doesn't have. The DJI does win one port back, with two USB-C to the RIVER's one, both topping out at 100W.
Buy the Power 500 if you…
- →Your list fits in 435Wh with room to spare: a CPAP night, phones, a laptop, a camera bag. The Power 500 covers it for less, and the RIVER's extra battery would ride along unused.
- →The station sits at your bedside running an AC-powered CPAP. The DJI takes that row, because the RIVER's fan is the one with a documented noise complaintA1A2.
- →You already fly DJI. The SDC ports fast-charge DJI batteries, which turns the brand lock-in into the reason to buy.
- →You run a resistive appliance between 800W and 1,000W in short bursts. The DJI holds 1,000W continuous; the RIVER stops at 800W.
If neither fits
Close the tab if you're planning for a real blackout or living in a van. The 8-hour outage list wants 1,645Wh and van life wants 4,685Wh a day, and even the bigger of these two covers only about 40% and 14% of those. Buying two of either costs more than doing it properly. Look at a station two to three times this size, or a fixed LiFePO4 house bank with its own inverter.
The Bottom Line
Take the RIVER 2 Pro. The extra $50 buys half again the battery, twice the AC outlets and a surge rating with real headroom for a compressor, and over a full rated life it costs the same per kWh as the DJI. Every list on this page that beats both units beats the Power 500 by more.
The Power 500 earns its place on a smaller job: a CPAP night, a desk of chargers, a drone bag. If that's your whole list, take the DJI and keep the money. If your list runs any longer, buy the RIVER 2 Pro and give it a spot where its fan won't keep anyone up.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
EcoFlow RIVER 2 Pro or DJI Power 500: which should I buy?
The RIVER 2 Pro, unless everything you run fits in about 435Wh of usable energy. It costs $50 more and gives you 768Wh to 512Wh, four AC outlets to two, a 12V car socket and a 1,600W surge rating. Over their rated lives both cost about the same per kWh delivered, so the extra money buys battery at no worse a rate.
Is the DJI Power 500 quieter than the RIVER 2 Pro?
Probably, but the published numbers can't prove it. DJI's 25dB is a best-case rating, while EcoFlow's 62dB is a maximum the RIVER 2 Pro reaches charging or discharging at high wattage, so they measure different things. The RIVER's fan does have a complaint trail: one owner swapped it, cutting internal plastic to fit the replacement. For a bedside CPAP, that's enough to lean DJI.
Can the RIVER 2 Pro or DJI Power 500 run a fridge?
The RIVER 2 Pro is the safer bet. Compressors pull two to three times their running draw at startup, and the RIVER peaks at 1,600W on an 800W inverter. The Power 500 publishes no surge above its 1,000W continuous rating, though testers briefly saw 1,500W through it. Either way, 653Wh or 435Wh of usable energy decides how long the fridge stays cold.
Which charges faster from solar, the DJI Power 500 or RIVER 2 Pro?
The Power 500 on paper: 300W into a 512Wh battery refills it in roughly half the time the RIVER takes at 220W into 768Wh. The catch is that the DJI has no built-in solar charge controller, so panels need a separate DJI adapter, and reviewers note the unit ships with only a wall plug. Price that adapter in before treating the faster refill as free.
Will either one run a CPAP all night?
Both will. A 320Wh night uses 49% of the RIVER 2 Pro's usable battery and 74% of the Power 500's. The DJI is the better bedside pick because the RIVER's fan noise is the documented one. If your CPAP runs from a 12V DC cable, though, the RIVER is the only one with a car socket to plug it into.
Brand matchup
EcoFlow vs DJI: measured across every matchup →Related comparisons
Where to buy
EcoFlow RIVER 2 ProPick
$389.00
$389.00 · direct from EcoFlow
Last checked 28 days ago. Prices move — check before you buy.
DJI Power 500
$299.00
$299.00 · direct from DJI
Last checked 28 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.