Head-to-head test
EcoFlow RIVER 3 vs DJI Power 500
Pound for pound and dollar for dollar these are the same battery at two sizes, so the entire decision is whether your night fits inside 208 watt-hours.
Full profiles: EcoFlow RIVER 3 → · DJI Power 500 →
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
$239.00 · direct from EcoFlow
Last checked 14 days ago. Prices move — check before you buy.
$299.00 · direct from DJI
Last checked 1 day ago. Prices move — check before you buy.
Spec deltas
The Power 500 holds 512Wh and the RIVER 3 holds 245Wh, which after inverter losses is 435Wh against 208Wh of energy you can actually spend. Every other difference on this page is downstream of that one, including the differences that go the RIVER 3's way.
What makes the matchup unusually clean is that DJI charges a fair rate for the extra. Divide price by capacity and it's $0.74 a watt-hour for the Power 500 ($299 divided by 512Wh) against $0.81 for the RIVER 3 ($199 divided by 245Wh). Divide capacity by weight and they're level: 31 watt-hours per pound for the EcoFlow, 32 for the DJI. Two sizes of the same idea, priced consistently.
So the argument isn't value, it's fit. Five of the six load profiles we model need more than 435Wh, which puts both units outside them entirely. The sixth is a CPAP overnight at 320Wh, and that one splits the pair cleanly: the DJI finishes the night with 115Wh in hand, the EcoFlow gets about 65% of the way.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
The one spec that refuses to scale is the inverter, which more than triples from 300W to 1,000W. So the $100 you add buys 227Wh of usable energy at roughly $0.79 a watt-hour, cheaper than either unit's own average, and the output jump rides along at no extra charge.
RIVER 3: 245Wh, 7.8 lb, $199Power 500: 512Wh, 16.1 lb, $299Rated continuous output: 300W against 1,000W
Why it mattersAnyone weighing these two on price per watt-hour is measuring the wrong column. That one barely separates them. The inverter separates them by three times.
Capacity
Both units advertise the same 20ms switchover, so both are sold as the box you put beside a medical device, and only one of them reaches morning with 115Wh still in it. Identical UPS spec, opposite outcome.
CPAP overnight profile draws 320WhRIVER 3 usable energy: 245Wh times 0.85 is 208WhPower 500 usable energy: 512Wh times 0.85 is 435WhBoth units switch over in 20ms
Why it mattersIf a CPAP is anywhere in your reason for buying, the RIVER 3 comes off the list at any price.
Set that beside the five profiles that need more than even the DJI's 435Wh and the two units stop being tiers of the same product. The RIVER 3 is for things that charge through a brick. The Power 500 will start appliance-class loads, and its 435Wh keeps those sessions short.
RIVER 3 is rated 300W continuousThe tailgate profile needs a 400W peak, which the RIVER 3 cannot startPower 500 is rated 1,000W continuousFive of six profiles need between 670Wh and 4,685Wh
Why it mattersIf anything on your list has a motor, a compressor or a heating element, the 300W unit is not a budget version of the 1,000W unit. It's a different tool, and no discount fixes an inverter ceiling.
solar input
That reshapes the $100 gap for anyone buying this to live off a panel. The EcoFlow's 110W is 110W on day one; the DJI's 300W is a figure you buy your way into, on top of buying the panel. For someone who only ever refills from a wall socket, none of this costs a thing.
Power 500 lists 300W of solar inputDJI's brand profile: no built-in solar charge controller, a separate proprietary adapter is requiredIt ships with a wall plug only, no solar adapters and no car-charging cableB4RIVER 3 lists 110W of solar input with no such asterisk
Why it mattersOff-grid buyers should price the DJI as $299 plus the adapter before they compare stickers. Wall-charging buyers can skip this paragraph entirely.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: 208Wh usable against 435Wh, after the 15% the inverter keeps, is the number every other difference here reports to.
continuous output
245Wh and 512Wh are the numbers on the boxes. 208Wh and 435Wh are what reaches your devices once the inverter keeps its 15%, and those are the only two figures worth planning around. The gap between them is 227Wh, which is more than the RIVER 3 holds in total.
Hold onto that: the extra energy the DJI carries is, by itself, a whole RIVER 3. Whether it's worth $100 depends entirely on whether you have ever actually run a battery flat. If you haven't, you're being asked to pay for a problem you don't have.
Portability & Form Factor
Selected because: 7.8 lb against 16.1 lb, at about 31 watt-hours per pound on both sides, so the weight is simply the receipt for the capacity.
weight
7.8 lb is a one-hand carry with a bag on the other shoulder. 16.1 lb is a deliberate lift, the kind you set down before you open the car door. That difference tracks capacity almost exactly: 31 watt-hours per pound for the RIVER 3 (245 divided by 7.8) and 32 for the Power 500 (512 divided by 16.1).
Neither company has found free energy, so the DJI's weight isn't a design failure to hold against it. It's what 512Wh costs to carry. The sharper question runs the other way: if 208Wh covers your day, the 8.3 lb the Power 500 adds is insurance you haul to the campsite and back without ever claiming it.
Your Life, Your Pick
Selected because: Five of our six load profiles need more than 435Wh; only the 320Wh CPAP overnight actually separates these two.
Five of the six profiles end in neither, and that's a finding rather than a dodge. A tailgate wants 670Wh, an eight-hour blackout 1,645Wh, a remote workday 910Wh, a van-life day 4,685Wh. Against 208Wh and 435Wh usable, those aren't close calls, and choosing well between these two doesn't move any of them.
The sixth profile is the one doing the work: a CPAP overnight at 320Wh. The Power 500 finishes it with 115Wh spare and the RIVER 3 gets 65% of the way. Worth knowing that a single scenario is carrying most of this verdict, especially if a CPAP has nothing to do with why you're here.
What the Specs Don't Tell You
Selected because: Three rows fire on this pair, and two of them, warranty and cycle life, are closer to level than the table makes them look.
rated cycles
The warranty row is a wash and should be read as one. Both units carry five years, same term on both sides, nothing to choose between them. All the row really shows is what you paid for that coverage: $40 per covered year against $76, which is the price difference wearing a different hat.
Cycle life looks like a wider gap than it is. The Power 500's 4,000 is the top of a rated 3,000 to 4,000 band, against EcoFlow's single 3,000 figureB1, and read at the floor of that band the two packs are level. Surge is the other row to slow down on. The RIVER 3 doubles from 300W to 600W and wins the ratio; the Power 500 publishes 1,000W of surge behind a 1,000W inverter, a ratio of exactly one, and wins the ceiling. Treat its number as an absence of published headroom rather than proof that there's none, and buy on the ceilings.
Brand Trust
Selected because: EcoFlow runs 12 to 15 models and the largest owner community in the category; DJI's power line started in 2024 with four models and almost no power-station-specific field record.
EcoFlow sells 12 to 15 models and has a subreddit of roughly 31,000 people. DJI's power line is four models old and its discussion happens inside a drone community. If something goes odd in year three, the distance between those two facts is how long it takes to find someone who has already had your problem.
DJI isn't a startup and the hardware pedigree is real, including 700-plus battery patents out of the drone business. But new to power stations has one concrete consequence on this specific unit rather than a vague one: no built-in solar charge controller, no expansion battery of the kind the newer Power 2000 and Power 1000 V2 accept, and SDC fast-charging that only pays out if you already own DJI gear. Buy it for the cells and the inverter, not for the ecosystem.
Strengths & trade-offs
EcoFlow RIVER 3
Strengths
- +Costs $100 less
- +Lighter by 8.3 lb
Trade-offs
- –Weaker inverter (-700W) limits appliance compatibility.
- –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
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$100) than the RIVER 3.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on seven 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 3 comes up 1,892Wh short (about 10% 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, by a wide margin. Eight hours of the loads people expect to keep running comes to 1,645Wh, against 208Wh and 435Wh usable. Both will hold up phones, a laptop and the router, which is not nothing when the lights go out, but calling either one house backup would be a lie. This profile belongs to a category above both.
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
Power 500
320Wh is the one load on this page that either unit can plausibly take, and only one of them does. The Power 500 has 435Wh usable and ends the night with 115Wh in hand. The RIVER 3 has 208Wh, gets about 65% of the way, and stops. Both switch over in 20ms, so as a bedside UPS the transfer is identical and the endurance is not.
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 3 comes up 702Wh short (about 23% covered), the Power 500 475Wh (48%). 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 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, and they fail in different places. The RIVER 3 is rated 300W continuous, so a 400W peak stops it before capacity is ever consulted. The Power 500 starts that load comfortably on its 1,000W rating and then hits the other wall, 435Wh usable against 670Wh needed. One can't start the party and the other can't finish it.
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 3 comes up 4,477Wh short (about 4% 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
SCN-07 · an afternoon · needs 100Wh
Afternoon Off-Grid
Phones and a speaker at the park, beach, or campsite — the small-unit job description
Either unit
This is the job small stations are actually for, and both do it: the RIVER 3 finishes at 48% used, the Power 500 at 23%. At this size the decider is what rides in the bag — 7.8 lbs for the RIVER 3 against 16.1 for the Power 500 — and price, not the leftover watt-hours.
Battery budget usedlower = more headroom
LOAD Phone Charger (×2) 30W×2h · Bluetooth Speaker 10W×4h
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: Power 500 runs 2.1h vs 1h.
$299 list · direct from DJI
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 0–29hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–5.8hHigh-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
August 9, 2026
Verdict: the Power 500, on Power Score margin
Take the Power 500. It costs $100 more and weighs 8.3 lb more, and it hands that back as 227Wh more usable energy and an inverter rated 1,000W against 300W, which is the line between charging devices and running something with a motor in it. It also works out slightly cheaper per watt-hour: $299 divided by 512Wh is $0.74, against $199 divided by 245Wh at $0.81. The RIVER 3 stays the right buy on one clear condition, and it is worth checking before you spend either amount: everything you plug in draws under 300W, and your day's total fits inside 208Wh usable. Cross either line once and the cheaper unit doesn't get cheaper. It just stops.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of August 9, 2026. The links below open EcoFlow's and DJI's current prices.
$299.00 · direct from DJI
Last checked 1 day ago. Prices move — check before you buy.
or check the RIVER 3 price$239.00 list
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated August 9, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): Solar Generator.
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 3 rates 4.4/5 (67th percentile of 22 Personal-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.
The ratio and the ceiling point opposite ways
The RIVER 3 doubles its 300W rating to 600W of surge, the better ratio of the two. The Power 500 publishes 1,000W of surge behind a 1,000W inverter, a ratio of exactly one. Read that as an absence of published headroom rather than proof there is none, and make the decision on the ceilings instead: 600W against 1,000W. Anything that starts hard is out of the RIVER 3's reach either way.
Identical terms, different prices
Both units carry five years. Same term, same length, nothing here separates them. The only thing this row measures is what a year of coverage cost you, $40 on a $199 unit against $76 on a $299 one, which is the price gap restated in another unit.
4,000 is the ceiling of a range, not a floor
The Power 500's 4,000 cycles sits at the top of a rated 3,000 to 4,000 band. Read it at the bottom and it's level with the RIVER 3's 3,000. Both are LFP packs rated in the thousands of cycles, so unless you plan to run one flat every single day, neither is going to die of old cycles before you replace it for some other reason.
Full record above — the Test Desk pick is the Power 500.
Check Power 500 price →or check the RIVER 3 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 3 is cheaper to buy, but the Power 500 is cheaper to own. At $0.15/kWh over its lifetime vs $0.27/kWh, the Power 500's higher cycle life and capacity make each dollar go further over the years.
Delivers each lifetime kWh for $0.12 less — check the Power 500 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
Roughly 31,000 people on the subreddit, plus several Facebook groups and an official forum. Whatever goes strange, someone has already posted about it and someone else has already answered.
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 very top of the range, the DELTA Pro Ultra platform stacks batteries and inverters into whole-home backup — a flagship path, not a line-wide feature.
Worth knowing
Support experiences are genuinely polarized: prepaid return labels and painless swaps for some, long waits and refurbished units for others. Buying through a retailer with its own returns window, Costco or Amazon, is the cheap hedge against landing in the second group.
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
Quiet is a design goal here rather than a happy accident, at 23 to 30 dB published across the line. The SDC ports fast-charge DJI drone batteries directly, and 700-plus battery patents from the drone business sit behind the cells.
Worth knowing
The power line started in 2024 and is four models deep, so there is very little power-station-specific field history, and the conversation lives in a drone subreddit rather than a power community. On this model specifically: no built-in solar charge controller, and no expansion battery of the sort the newer Power 2000 and Power 1000 V2 accept.
Analyst note
A category leader against a well-funded newcomer, and the honest read is that it matters less than usual at this size. Either way you're buying a sealed box, 245Wh or 512Wh, with five years of warranty behind it. Where brand depth would earn its keep, an expansion path or a decade of accessories, neither of these two units offers one anyway.
Growth path
RIVER 3
FIXED CAPACITYFixed at 245Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 110W of solar. Limited to a single portable panel.
Limited ports. You'll likely need a power strip or splitter.
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 Power 500 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 3
The evidence base for the RIVER 3 is comparison writing rather than ownership: nearly every entry measures it against the RIVER 2 instead of against anything else on the marketA1A2A3A4. On that axis it's a clean sweep, adding IP54 sealing, a faster switchover, a 2x runtime mode and a lighter body while holding more energy than the unit it replacedA2A4. It's also described as whisper quiet at under 30 dB, which the spec sheet agrees withA1.
None of that says anything about a 512Wh DJI. Read honestly, the ledger argues one thing well: if you were choosing between RIVER generations, take the 3A3. That's a different question than the one on this page, and it's the reason the RIVER 3's case here rests on its specs rather than on field reports.
“The RIVER 3 operates under 30 dB — EcoFlow calls it 'whisper quiet,' quieter than a library — one of the most significant upgrades over the louder RIVER 2.”
Sources
backuppowerhub.com · ecoflow.com · rv.com · versus.com
DJI Power 500
The Power 500's record is review-bench testing rather than long-term ownership, which fits a line that launched in 2024. What testing exists is unusually concrete: a sustained 905W load, a brief excursion to 1,500W above its published 1,000W rating, and better measured efficiency than DJI's own larger Power 1000B3. The weight checks out too, at about 7.3 kgB2, which is the 16.1 lb on the spec sheet.
The recurring complaint is about what's in the box rather than what the box does: a wall plug and nothing else, no solar adapter and no car-charging cableB4. The cells are cited at 3,000 to 4,000 cycles for something like a decade of serviceB1, which is worth reading carefully, because the 4,000 on the spec table is the ceiling of that range and not its floor.
“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
- The RIVER 3 improves on the RIVER 2 across the board — quieter (sub-30 dB), IP54-rugged, faster UPS, more capacity, lighter, and cheaper — a rare strict upgrade. [RIVER 3 · 3 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
“The RIVER 3 operates under 30 dB — EcoFlow calls it 'whisper quiet,' quieter than a library — one of the most significant upgrades over the louder RIVER 2.”
backuppowerhub.com / ecoflow.com — RIVER 2 vs RIVER 3 · 2026 · [positive]
- A2
“Over the RIVER 2, the RIVER 3 adds IP54 waterproofing, a faster UPS switchover, a 2x runtime mode, and a more compact, lighter form factor.”
backuppowerhub.com — RIVER 2 vs RIVER 3 · 2026 · [positive]
- A3
“Recommended as the better buy for most in 2026 — for camping, van life, or home UPS backup, where durability and noise matter, the data consistently favors the RIVER 3.”
backuppowerhub.com / rv.com — RIVER 3 review · 2026 · [positive]
- A4
“Holds more capacity and weighs less than the RIVER 2 while costing less, making it effectively a strict upgrade on the same platform.”
ecoflow.com / versus.com — RIVER 2 vs RIVER 3 · 2026 · [positive]
- 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 August 9, 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 3
35 claims from 21 comments · 30 from owners · 9 with figures
- UPS switchover
- 5 · 47% negative
- Price & value
- 6 · 17% negative
- Runtime
- 2 · 0% negative
- Warranty & support
- 6 · 73% negative
- Other
- 2 · 100% negative
What owners complain about
Accepts 80V-170V before switching over, which he calls poor for a home-office UPS.
UPS switchovermeasuredowner34 agreedsource →
Surge protection is only 150J, so he keeps it behind an older UPS's surge-only port.
Othermeasuredowner34 agreedsource →
Screen showed jumbled alphanumeric symbols, and the returned unit came back with Wi-Fi disabled.
Durabilityowner6 agreedsource →
What owners praise
Kept router and switch alive about 4 hours per charge during the 5 day post-Milton outage.
Runtimemeasuredowner38 agreedsource →
Happy sticking with their RIVER 3 units at $169 each.
Price & valuemeasuredowner45 agreedsource →
Works awesome as a UPS for Starlink router, switch and camera through rural spikes and outages.
UPS switchoverowner38 agreedsource →
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 3 if you…
- →You're packing for a weekend with a laptop, a couple of phones and camera batteries, everything charges through a brick, and 7.8 lb in the top of the bag matters more than headroom you won't use.
- →You want a desk-side backup for a router and a modem, where the 20ms switchover is the spec that matters and total capacity isn't.
- →You've actually added up your daily draw, it lands under 208Wh, and you'd rather keep the $100.
Buy the Power 500 if you…
- →A CPAP is on the list. 320Wh a night against 435Wh usable is the only answer of the two that reaches morning, and that is not a spec you gamble on.
- →You fly DJI drones. The SDC ports fast-charge that gear specifically, which is real money to you and worth nothing to any other buyer of this unit.
- →You want one small box that can at least start a 400W load. The 300W RIVER 3 can't, and that's a hardware ceiling rather than a price problem.
If neither fits
If you're shopping for a blackout, a van build or a family camping weekend, close this tab cheerfully. Those profiles run 1,645Wh, 4,685Wh and 2,100Wh against 208Wh and 435Wh usable, and neither unit accepts an expansion battery to close the distance. You want a much larger station, not the better of two small ones.
The Bottom Line
Take the Power 500. The extra energy it carries, 227Wh usable, is more than the RIVER 3 holds in total, and DJI charges slightly less per watt-hour for it than EcoFlow does. Same energy per pound, same five-year warranty, same 20ms switchover. What actually changes hands for your $100 is a bigger tank and an inverter more than three times the size.
The RIVER 3 keeps one clean win worth naming: at 7.8 lb and $199 it's the one you'll actually take with you, and if everything you own charges through a brick, the DJI's extra capacity is weight you carry and never use. So do the single piece of homework this decision needs and add up your daily watt-hours. Under 208 and the RIVER 3 is the smarter $199. Anywhere above it, which is most people with a real load list, buy the Power 500.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the DJI Power 500 worth $100 more than the EcoFlow RIVER 3?
If your loads exceed 208Wh in a day or 300W at any single moment, yes, and it isn't close. The $100 buys 227Wh of extra usable energy at about $0.79 a watt-hour, which is cheaper than either unit's own price per watt-hour, plus an inverter rated 1,000W instead of 300W. If you stay under both of those lines, you're paying $100 for capacity you will never spend.
Can the EcoFlow RIVER 3 run a CPAP all night?
No. A CPAP overnight draws about 320Wh and the RIVER 3 has 208Wh usable after inverter losses, so it covers roughly 65% of the night and then quits. The Power 500 has 435Wh usable and ends with 115Wh spare. Both switch over in 20ms if you're running one as a bedside UPS, so the difference here is purely endurance.
Does the DJI Power 500 come with a solar cable?
No. It ships with a wall plug and nothing else, no solar adapter and no car-charging cable. It also has no built-in solar charge controller, so reaching its 300W solar figure means buying DJI's separate proprietary adapter on top of a panel. Budget for that before you compare sticker prices with the RIVER 3, which lists 110W of solar input without the extra step.
Which one should I buy if I fly DJI drones?
The Power 500, for a reason that has nothing to do with capacity. Its SDC ports fast-charge DJI gear directly, and that advantage is proprietary to DJI's ecosystem. If you own the drones it's worth real money; if you don't, ignore it completely and decide on the 435Wh instead.
Will either of these get me through a power outage?
Not a real one. An eight-hour blackout profile needs 1,645Wh; the RIVER 3 has 208Wh usable and the Power 500 has 435Wh. Both will keep phones, a laptop and the router alive, which genuinely helps, but neither is house backup and neither can become one, because neither accepts an expansion battery.
Brand matchup
EcoFlow vs DJI: measured across every matchup →Where to buy
EcoFlow RIVER 3
$239.00
$239.00 · direct from EcoFlow
Last checked 14 days ago. Prices move — check before you buy.
DJI Power 500Pick
$299.00
$299.00 · direct from DJI
Last checked 1 day ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.