Head-to-head test
EcoFlow RIVER 3 MAX PLUS vs DJI Power 500
The cheaper box is also the bigger one: $359 buys 858Wh, $379 buys 512Wh, and on units this small it's watt-hours that run out first, not watts.
Full profiles: EcoFlow RIVER 3 MAX PLUS → · DJI Power 500 →
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
No longer sold
EcoFlow no longer sells the RIVER 3 Max Plus. At this size the closest unit EcoFlow still sells is the RIVER 2 Pro — 768Wh with a stronger 800W inverter, typically for less money. If you'd rather step up in capacity, the DELTA 3 Classic (1,024Wh, 1,800W) is the move.
RIVER 2 Pro · $389.00
$299.00 · direct from DJI
Last checked 1 day ago. Prices move — check before you buy.
Spec deltas
Twenty dollars separates these two boxes, and 346 watt-hours separates them the other way. The RIVER 3 MAX PLUS is $359 with 858Wh inside; the DJI Power 500 is $379 with 512Wh (858 minus 512 = 346). The cheaper one is the bigger one, which usually ends a comparison before it starts.
It doesn't quite end this one, because the DJI is the better-built machine on the power side. It runs 1,000W continuous where the RIVER runs 600W, it weighs 16.1 lb against 20.8, and DJI rates its cells for 4,000 charge cycles to EcoFlow's 3,000. Three genuine wins, none of them marketing.
They just don't add up to 346 watt-hours. Run the DJI at its own headline 1,000W and the 435Wh you can actually pull out of it (85% of 512Wh) is gone in about half an hour, and both units can start the surge peak of every one of our six test loads anyway. Power was never the thing that was going to run out. Take the RIVER unless you're carrying it far enough that the weight registers.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
The 670Wh tailgate settles what that means. The RIVER covers it out of 729Wh usable and the DJI can't get near it with 435Wh, even though both boxes can start every peak in the set. On a unit this size the thing that fails is the tank, not the pump.
DJI Power 500: 1,000W continuous output, 512Wh capacity, 435Wh usable at 85%RIVER 3 MAX PLUS: 600W continuous output, 858Wh capacity, 729Wh usable at 85%Both units can start the peak load in all six test scenariosTailgate Party test load: 670Wh
Why it mattersIf the 1,000W rating is what's pulling you toward the DJI, work out how long you'd need 1,000W. More than a few minutes and neither of these is the right unit.
rated cycles
Extra cycles of a smaller battery still finish behind. Grant the DJI the best end of its cited rangeB1 and it delivers 2,048 kWh across its life to the RIVER's 2,574, which is 19 cents per lifetime kilowatt-hour against 14. Refilling a smaller tank more times doesn't get you more water.
$359 divided by 858Wh = 42 cents per watt-hour (RIVER 3 MAX PLUS)$379 divided by 512Wh = 74 cents per watt-hour (DJI Power 500)Cycle ratings: 3,000 (RIVER) against 4,000 (DJI), with the DJI's cells cited at 3,000 to 4,000B1Lifetime energy: 3,000 x 858Wh = 2,574 kWh against 4,000 x 512Wh = 2,048 kWh
Why it mattersAnyone paying up for the 4,000-cycle number is buying more refills of less battery, not more total energy.
solar input
So the real choice is the RIVER's full solar day against the DJI's fast morning plus an accessory purchase at a price this page can't quote you. And four and a half hours is still one good day of sun, which is the only unit of measurement that matters when you're refilling off panels.
Solar input: 300W (DJI Power 500) against 200W (RIVER 3 MAX PLUS)The Power 500 has no built-in solar charge controller and needs a separate proprietary DJI adapterThe Power 500 ships with only a wall plug, no solar or car-charging cablesB4RIVER 3 MAX PLUS: 858Wh at 200W input
Why it mattersIf solar is the reason you're buying, price DJI's adapter before you compare these two, or take the unit whose 200W input works the day it lands.
weight
The margin is where they split. That same 320Wh night leaves the DJI down near its last quarter and the RIVER with more than half still in hand, so a second night without a wall socket is a RIVER thing. Add a humidifier and the cushion is the part you'll miss.
CPAP Overnight test load: 320WhUsable energy: 729Wh (RIVER 3 MAX PLUS) against 435Wh (DJI Power 500)Weight: 16.1 lb (DJI) against 20.8 lb (RIVER)Published noise: 25 dBA (DJI) against 30 dBA (RIVER)
Why it mattersRecharge daily and either box works at the bedside. Want a spare night, or an outage that runs past breakfast, and it's the RIVER.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: At nearly the same money, one box gives you 729Wh of usable energy and the other 435Wh (85% of 858Wh and 512Wh). Everything else on this page is downstream of that.
continuous output
Both boxes lose the same 15% to the inverter, which is why the gap widens in practice: 858Wh becomes 729Wh usable, 512Wh becomes 435Wh. Nobody runs a battery to zero either, so treat those as ceilings rather than budgets.
What that buys is unglamorous and decisive. A 670Wh evening fits inside the RIVER and doesn't fit inside the DJI. A 910Wh workday fits inside neither, though the RIVER covers about 80% of it (729 divided by 910) and the DJI about half (435 divided by 910). Every load in between lands the same way.
Lifetime Value
Selected because: Across their rated lives the RIVER delivers 2,574 kWh and the Power 500 delivers 2,048, which is where the $20 between the stickers stops mattering.
cost / lifetime kWh
Spread across their cycle ratings, the RIVER delivers 2,574 kWh over its life and the Power 500 delivers 2,048, which lands at 14 cents per lifetime kilowatt-hour against 19. The DJI is the longer-lived cell and the more expensive energy, at the same time.
Both carry a five-year warranty, so the extra 1,000 cycles buy you more refills of less battery. That's a fine trade if 512Wh is genuinely all you need. It stops being one the moment you want a whole evening out of it.
Your Life, Your Pick
Selected because: Four of our six test loads are too big for either unit, so the real question is which one covers the two that fit.
Four of the six loads we model are out of reach for both units, and that's the most useful thing this section says. An 8-hour blackout at 1,645Wh is more than double the 729Wh the larger box can actually deliver. A 4,685Wh van-life day isn't a near miss, it's a different aisle.
The two that fit split one each, along exactly the line you'd expect. The 670Wh tailgate goes to the RIVER because it's the only one with the energy for it. The 320Wh CPAP night goes to the DJI because when both units can do a job, the lighter and quieter one wins it.
Portability & Form Factor
Selected because: 16.1 lb against 20.8 lb is the DJI's clearest win, and for anyone carrying it any distance it's the one thing that could flip this.
weight
Four and a half pounds is the honest case for the DJI, and it's a better case than it looks on a spec line. 16.1 lb against 20.8 is the difference between a box you sling into a back seat without thinking and one you notice, and if this is going in a pannier, onto a boat, or on a long walk from the car, that's a real argument.
It's also the only argument that gets stronger the less you use the battery. Carry it far and often and the weight compounds every trip. Set it down beside a cooler for an afternoon and it never comes up again.
Growth Path
Selected because: One of these takes an expansion battery and one doesn't, but the RIVER 3 MAX PLUS already ships with EcoFlow's larger expansion battery attached.
solar input
EcoFlow builds the MAX PLUS by pairing the RIVER 3 Plus with its larger EB600 expansion battery, which is how it reaches 858WhA2A6A9. So the expansion port in the spec column is one you've largely already spent. Treat 858Wh as what you're buying, not as a floor you'll build on.
That takes most of the sting out of the Power 500 being sealed. A fixed 512Wh isn't a flaw if 512Wh covers you, and the honest version of this row is that neither unit is a growth story. One of them is just bigger on the day it arrives.
Strengths & trade-offs
EcoFlow RIVER 3 MAX PLUS
Strengths
- +Larger battery capacity
Trade-offs
- –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 $60 less
- +Lighter by 4.7 lb
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Sealed capacity — the RIVER 3 MAX PLUS can add batteries to grow past 512Wh; this one can't.
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 3 MAX PLUS comes up 1,371Wh short (about 35% 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, and not by a little. The load is 1,645Wh and the larger of these two delivers 729Wh usable. Both can start everything on the list, they just can't hold it for eight hours, which is the entire job description of an outage. If backup is why you're shopping, this pair is the wrong size rather than the wrong choice.
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
The Power 500 takes this one on the things that matter at 3 a.m.: it's the lighter box with the lower published noise figure, and a 320Wh night sits comfortably inside what it holds. The RIVER's counter is the morning after. It finishes the night with more than half its usable energy left while the DJI is down near its last quarter, so if a second night away from a wall socket is even possible, margin outranks ounces.
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 covers a 910Wh workday, but the distance isn't the same. The RIVER gets about 80% of the way there on 729Wh usable; the DJI gets about half on 435Wh. If you work off one of these regularly, the honest answer is a bigger battery or a midday top-up, and the RIVER needs less of one.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
RIVER 3 MAX PLUS
The RIVER covers this and the DJI doesn't, which is the cleanest result on the page. A 670Wh afternoon fits inside 729Wh usable with very little spare, so plan on plugging in afterward rather than running two parties on one charge. The DJI would need half again the energy it has.
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, and it's not close enough to argue about. A 4,685Wh day against 729Wh of usable energy in the larger unit means recharging six times over before dinner. Van life is a different product class. Price these two against weekends instead.
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 3 MAX PLUS runs 3.6h vs 2.1h.
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 0–48.6hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–9.7hHigh-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
August 9, 2026
Verdict: the EcoFlow RIVER 3 MAX PLUS
Take the RIVER 3 MAX PLUS. It's $359 against the Power 500's $379 and holds 858Wh against 512Wh, which works out to 42 cents a watt-hour versus 74 ($359 divided by 858, $379 divided by 512). The DJI's wins are real: 1,000W continuous against 600W, 16.1 lb against 20.8, and a 4,000-cycle rating against 3,000. None of them changes the fact that 435Wh of usable energy (85% of 512Wh) lasts about half an hour at the DJI's own rated output. Buy the Power 500 if you already own DJI drone batteries, or if you carry the thing far enough that 4.7 pounds is a real cost. Otherwise you're getting 346 more watt-hours for $20 less, and that isn't a trade you think twice about.
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.
$359.00 · direct from EcoFlow
Last checked 41 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 August 9, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
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 MAX PLUS rates 4.9/5 (95th 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.
Sealed at 512Wh, and the RIVER is closer to sealed than it looks
The Power 500 is fixed at 512Wh, so buy the capacity you need on day one. Worth saying about the other side of this card, though: the MAX PLUS is the RIVER 3 Plus with EcoFlow's larger EB600 expansion battery already fitted, which is how it gets to 858Wh. That expansion port is mostly spent. Judge both boxes on what they hold today, and a fixed 512Wh is only a flaw if 512Wh isn't enough.
Two-to-one headroom, on the smaller inverter
The RIVER's 1,200W surge sits at twice its 600W continuous rating. The Power 500's 1,000W surge is exactly its continuous rating, so on paper it has no headroom at all. That ratio is a fair read on inverter design and an unfair read on capability, because the DJI's flat 1,000W is still the higher ceiling of the two. Ratio to the RIVER, absolute number to the DJI. What actually matters is whether your startup spike fits under the higher of those figures.
10ms against 20ms, and why it shouldn't settle this
The RIVER hands over in 10 milliseconds and the Power 500 in 20. The RIVER's is the quicker switch and that's a genuine edge if a desktop lives on this thing, but at 858Wh and 512Wh neither unit is backing up a house. Use it as a tiebreak, not as an argument, and don't let 10 milliseconds outweigh the capacity gap.
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.
Battery Lifespan in Real Years
The Power 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. One caution reading years across different sizes: a cycle is 512Wh on the Power 500 and 858Wh on the RIVER 3 MAX PLUS, so count lifetime energy — roughly 2,048 kWh against 2,574 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
Full record above — the Test Desk pick is the RIVER 3 MAX PLUS.
Check RIVER 3 MAX PLUS 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
The Power 500 is cheaper to buy, but the RIVER 3 MAX PLUS is cheaper to own. At $0.14/kWh over its lifetime vs $0.15/kWh, the RIVER 3 MAX PLUS's higher cycle life and capacity make each dollar go further over the years. 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 3 MAX PLUS still delivers more over its shorter horizon (2,574 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 phone, email and chat, with experiences that split hard in both directions: plenty of hassle-free prepaid-label replacements, and plenty of long waits with refurbished units sent against new claims. Buying through Costco or Amazon gives you a second return path that EcoFlow's own queue doesn't.
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 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
EcoFlow moves faster than anyone in this category and occasionally moves badly. The October 2025 DELTA Max 2000 recall covered overheating with six reported incidents, on a much larger and separate product line, and an attempt to paywall advanced app features in early 2025 was paused after community pushback. Neither touches RIVER 3 hardware, but both tell you the kind of company you're buying from. There's also no parts or service offered out of warranty.
DJI
Ecosystem
Four power stations, all from 2024 onward, hanging off the largest drone company in the world. If you own DJI batteries, the SDC ports are a real reason to be here. If you don't, you're buying into an accessory system built for someone else.
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
The power line is new enough that there's no dedicated owner community to search when something goes odd, so power-station questions land in a drone subreddit alongside gimbal talk. Two practical catches on this model specifically: no built-in solar charge controller, so solar needs DJI's separate adapter, and battery expansion exists on the newer Power 2000 and Power 1000 V2 but not here.
Analyst note
EcoFlow gives you the deeper bench: more models, an actual owner community to search at 2 a.m., and a support operation that's inconsistent but at least well documented. DJI gives you serious hardware pedigree without a power-station track record, and an app whose rating covers the whole drone ecosystem rather than this box. On a sub-$400 unit that gap matters less than it would at $2,000, but it's the reason the RIVER's ecosystem argument isn't nothing.
Growth path
RIVER 3 MAX PLUS
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 858Wh.
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.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
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
The Power 500 is sealed at 512Wh, which is fine if that covers you. The RIVER 3 MAX PLUS starts at 858Wh and can grow beyond it with EcoFlow expansion batteries — though at this size expansion means longer runtimes on the same loads, not a path to home backup. More hours, not more house.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow RIVER 3 MAX PLUS
Long-term owner reports on this exact configuration barely exist. What's out there is short hands-on review work rather than months of living with it, so read the field evidence as first impressionsA1A5. Those reviewers clocked a mains refill of about 2.3 hoursA1, singled out the sub-10ms UPS switching as the standoutA3, and called it a good middle ground for weekend off-grid useA5.
The one recurring caution is about the boosted output, and the sources don't agree on where the line falls. One describes the extended 1,200W mode as intended for resistive loads like heaters rather than sensitive electronicsA7; another says it won't run a high-power hairdryer or microwave at allA4. Split the difference by planning around the 600W rating and treating anything above it as a bonus.
“The RIVER 3 Max Plus (Wireless) can go from empty to full from mains in around 2.3 hours, which is very quick given its capacity.”
Sources
wandering-bird.com · root-nation.com · phonearena.com
DJI Power 500
Field data on the Power 500 is thin too, but it's consistent. In testing it ran a 905W load and briefly took a 1,500W spike past its 1,000W ratingB3, which is more than the spec sheet promises. One reviewer flagged the box contents: a wall plug and nothing else, no solar or car-charging cablesB4.
Cell life is where the sourcing gets loose. The cited figure is 3,000 to 4,000 cycles for roughly a decade of useB1, and our spec column takes the top of that range. Read the lifetime numbers on this page as the DJI's best case rather than its guaranteed one.
“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
- Owners/reviewers consistently note the Max Plus is a modular upgrade (base unit + EB600 battery) rather than a distinct unit, and reference its 858Wh combined capacity — this conflicts with the 1196Wh figure given in the task brief, suggesting a possible spec discrepancy or regional/bundle variant not covered by available sources. [RIVER 3 MAX PLUS · 3 entries]
- Reviewers agree the extended 1200W X-Boost output is best suited to resistive/heating loads, not sensitive electronics like PCs. [RIVER 3 MAX PLUS · 2 entries]
- Sub-10ms UPS switchover is repeatedly highlighted as a standout, real-world-tested feature across the River 3 Plus/Max/Max Plus family. [RIVER 3 MAX PLUS · 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
“The RIVER 3 Max Plus (Wireless) can go from empty to full from mains in around 2.3 hours, which is very quick given its capacity.”
wandering-bird.com — REVIEW: Ecoflow River 3 Max Plus- vanlife essential or not? · 2025-11 · [positive]
- A2
“The RIVER 3 Max Plus (Wireless) is created by taking the RIVER 3 Plus (Wireless) and attaching the larger EB600 extra battery, giving a total capacity of 858Wh.”
wandering-bird.com — REVIEW: Ecoflow River 3 Max Plus- vanlife essential or not? · 2025-11 · [positive]
- A3
“UPS (Uninterruptible Power Supply) switching on the RIVER 3 Plus/Max models is under 10 milliseconds”
wandering-bird.com — REVIEW: Ecoflow River 3 Max Plus- vanlife essential or not? · 2025-11 · [positive]
- A4
“It won't run a high-power hairdryer or microwave, but that's true for most portable power stations unless you go for one of the big Delta units.”
wandering-bird.com — REVIEW: Ecoflow River 3 Max Plus- vanlife essential or not? · 2025-11 · [mixed]
- A5
“For typical wild parking or a weekend off-grid, the Max Plus version is a brilliant middle ground.”
wandering-bird.com — REVIEW: Ecoflow River 3 Max Plus- vanlife essential or not? · 2025-11 · [positive]
- A6
“There's also the EcoFlow River 3 Max Plus, which comes bundled with the larger EB600 battery. It costs $73 more than the standard Max version”
root-nation.com — EcoFlow River 3 Max Review · 2025-05 · [positive]
- A7
“the extended output is designed for resistive loads – things like hair dryers, heaters, or compact air conditioners. It's not meant for sensitive electronics like desktop PCs.”
root-nation.com — EcoFlow River 3 Max Review (discusses River 3 Max Plus family) · 2025-05 · [mixed]
- A9
“With the EB300, you transform the station into the River 3 Max model, while the larger expansion battery gives you the EcoFlow River 3 Max Plus.”
phonearena.com — EcoFlow River 3 Plus Review · 2025-03 · [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]
- 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.
Who Should Buy Which
Buy the RIVER 3 MAX PLUS if you…
- →You want the most watt-hours you can get under $400 and you're fine with a 20.8 lb box. 858Wh for $359 is the answer to that question.
- →Your evenings look like the 670Wh tailgate: a speaker, string lights, a blender, four phones. This is the only one of the two that finishes the night.
- →You run a CPAP and want a second night of margin without hunting for a wall socket. A 320Wh night uses well under half of 729Wh usable.
- →You want solar that works the day it arrives. 200W in, and 858Wh full in about four and a half hours of strong sun.
This is you — check the RIVER 3 MAX PLUS price
Buy the Power 500 if you…
- →You already fly DJI drones. The SDC ports fast-charge DJI batteries and nothing on the RIVER does that.
- →You need to start and briefly hold a 1,000W load. The DJI is rated for it and one test ran 905WB3; the RIVER's honest continuous number is 600W.
- →You carry it. 16.1 lb against 20.8 is the difference you feel on the long walk back from the car, every single trip.
- →512Wh is genuinely enough for you, and you'd rather have the lighter, quieter-on-paper box beside the bed than headroom you won't use.
If neither fits
Anyone sizing for a real outage should close both tabs. The 8-hour blackout we model is 1,645Wh, more than double the 729Wh the larger of these two can actually deliver, and a van-life day is 4,685Wh. Shop a class up rather than picking the cheaper of two units that both come up short. Same goes if the appliance you're worried about is a microwave or a hairdryer: one reviewer put it plainly for the RIVER, no high-power hairdryer and no microwaveA4, and the DJI's 1,000W ceiling doesn't move that into a different category.
The Bottom Line
Take the RIVER 3 MAX PLUS. It costs $20 less and holds about two-thirds more energy, and the case against it is a 4.7-pound weight penalty and an inverter that stops at 600W instead of 1,000W. Set that against the per-watt-hour gap and it isn't close, even though the sticker prices are.
The Power 500 is a well-made small box that would win a different page. Buy it if you fly DJI drones, or if the walk from the car is long enough that pounds beat watt-hours. Everyone else is choosing between energy and portability at the same money, and 346 watt-hours buys more evenings than 4.7 pounds saves shoulders.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Which is cheaper, the EcoFlow RIVER 3 MAX PLUS or the DJI Power 500?
The RIVER 3 MAX PLUS, at $359 against the Power 500's $379. It's also the larger battery, 858Wh against 512Wh, so the price and the capacity point the same direction. Twenty dollars wouldn't decide anything on its own; what comes attached to it does.
Can the DJI Power 500 run a 1,000W appliance?
Yes. It's rated for 1,000W continuous, and in testing it ran a 905W load and briefly handled a 1,500W spike. The catch is duration: at 1,000W you're drawing from 435Wh of usable energy (85% of 512Wh), which is about half an hour. It's a strong inverter bolted to a small battery.
Does the DJI Power 500 come with a solar cable?
No. It ships with a wall plug and nothing else, no solar or car-charging cables. It also has no built-in solar charge controller, so reaching its 300W solar rating means buying DJI's separate proprietary adapter. Budget for that before you count 300W as an advantage over the RIVER's 200W.
Is the EcoFlow RIVER 3 MAX PLUS expandable?
It has an expansion port, but the MAX PLUS is the RIVER 3 Plus with EcoFlow's larger EB600 battery already attached, which is how it reaches 858Wh. You're buying the expanded configuration, not the starting point. Size your purchase around 858Wh rather than around future growth.
Will either one run a CPAP all night?
Both will. A CPAP night in our model is 320Wh, which the RIVER covers out of 729Wh usable and the DJI covers out of 435Wh. The difference is what's left at sunrise: the DJI ends near its last quarter, the RIVER with more than half. If you can't recharge every day, that margin is the whole decision.
Check RIVER 3 MAX PLUS price →
Brand matchup
EcoFlow vs DJI: measured across every matchup →Where to buy
EcoFlow RIVER 3 MAX PLUSPick
$359.00
$359.00 · direct from EcoFlow
Last checked 41 days ago. Prices move — check before you buy.
DJI Power 500
$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.