Head-to-head test
EcoFlow DELTA 3 vs EcoFlow RIVER 3 MAX
DELTA 3 and RIVER 3 MAX cost almost exactly the same per kilowatt-hour stored — so this was never a price fight, it's a straight question of whether your loads need DELTA 3's 1,024Wh and 1,800W, or RIVER 3 MAX's 572Wh and 600W is already enough.
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
EcoFlow
DELTA 3
3,196Power Score · Appliance Class
$549.00 list · direct from EcoFlow
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EcoFlow
RIVER 3 MAX
2,472Power Score · Appliance Class
$319.00 list · direct from EcoFlow
Spec deltas
DELTA 3 holds 1,024Wh, runs 1,800W continuous with a 3,600W surge ceiling, weighs 27 lbs, and costs $549. RIVER 3 MAX holds 572Wh, runs 600W continuous with a 1,200W surge ceiling, weighs 10.4 lbs, and costs $319. Same brand, same five-year warranty, same 3,000-cycle LiFePO4 cells — this pair isn't arguing about quality, it's arguing about size.
Run the actual cost of ownership and the size gap disappears: $0.18 per lifetime kWh for DELTA 3, $0.19 for RIVER 3 MAX, and $0.54 versus $0.56 per Wh of capacity. However you slice the unit economics, these two cost the same to own. The real gap shows up in what they can physically do. DELTA 3 clears a tailgate afternoon (670Wh, 77% of usable capacity) that RIVER 3 MAX can't finish, since it would need 138% of what it holds; a CPAP overnight is the one job both manage without stress.
The honest read: DELTA 3 is the safer default if you don't already know your ceiling, and RIVER 3 MAX is the right buy if you do, and it's low. The rest of this page is the math for figuring out which one you actually are.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
cost / lifetime kWh
Lifetime cost per kWh was supposed to settle this and instead ties it; the real decision is whether 670Wh-and-up loads are part of your life, because that's where the capacity gap stops being abstract and starts being a hard limit.
DELTA 3 holds 1,024Wh at $0.18 per lifetime kWh; RIVER 3 MAX holds 572Wh at $0.19 per lifetime kWhTailgate Party needs 670Wh — 77% of DELTA 3's usable capacity (handles it) versus 138% of RIVER 3 MAX's (can't)
Why it mattersIf your outdoor or backup draw regularly tops 670Wh for an afternoon or evening, RIVER 3 MAX physically can't finish it — pay the $230 more knowing that's exactly what it buys, not because DELTA 3 is the 'better' unit in the abstract.
solar input
RIVER 3 MAX's 10.4 lbs and 110W solar ceiling aren't limitations so much as a different job description: a unit meant to move with you daily, not anchor a multi-day, panel-fed setup.
DELTA 3 weighs 27 lbs; RIVER 3 MAX weighs 10.4 lbsDELTA 3's growth path runs through 500W of solar input versus RIVER 3 MAX's 110W
Why it mattersIf the unit is riding in a backpack, a boat, or the back seat every day, 27 lbs is the wrong answer regardless of the Wh gap — RIVER 3 MAX is the one you'll actually carry.
Capacity
That gap doesn't shrink no matter how the units are used — RIVER 3 MAX is permanently capped at 110W, so a multi-day, panel-fed outage means chasing sun for most of a day just to catch up, every day.
RIVER 3 MAX's 110W maximum solar input fills its 572Wh battery in 7.4 hoursDELTA 3's 500W maximum solar input fills its 1,024Wh battery in about two hours (1,024Wh divided by 500W)
Why it mattersAnyone planning to recharge from panels rather than a wall outlet during an extended outage should weigh this ahead of price; it's the difference between being topped off by midday and still catching up at dinner.
continuous output
Anything that draws close to or above 600W continuously simply won't run on RIVER 3 MAX, no matter how much charge is left in it — that's a hard ceiling, not a runtime problem.
DELTA 3 runs 1,800W continuous with 3,600W surge; RIVER 3 MAX runs 600W continuous with 1,200W surgeDELTA 3's 1,024Wh capacity is roughly 1.8 times RIVER 3 MAX's 572Wh (1,024 divided by 572)
Why it mattersBefore comparing prices, check the running wattage of whatever you actually need to power against 600W: under that line, RIVER 3 MAX works fine for $230 less; at or above it, DELTA 3 is the only one of these two that turns the thing on at all.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: Cost per kWh is a near-tie ($0.18 vs $0.19), which rules out price as the deciding factor before the real question starts.
cost / lifetime kWh
Run the actual cost of ownership and DELTA 3 and RIVER 3 MAX are functionally tied: $0.18 per kWh over DELTA 3's life against $0.19 for RIVER 3 MAX, and $0.54 versus $0.56 per Wh of capacity. Neither is the 'cheap' one or the 'expensive' one once you account for what each stores and how long it lasts — you're paying almost identically well for a kilowatt-hour of storage either way.
That means the lever that actually decides this isn't cost per kWh. It's whether you need 1,024Wh and 1,800W of delivery, or 572Wh and 600W already covers everything you'd plug in. That's a capacity question, not a price question, and it's the one the rest of this page answers.
Your Life, Your Pick
Selected because: The clearest evidence of the size-class gap: DELTA 3 clears two real loads RIVER 3 MAX can't touch.
Run six real loads against these two and the split is stark. DELTA 3 clears Tailgate Party (670Wh, using 77% of its usable capacity) and CPAP Overnight (320Wh, 37%) outright. RIVER 3 MAX clears neither on its own: Tailgate Party would need 138% of what it actually holds, and even CPAP Overnight eats two-thirds of its usable capacity (66%) to DELTA 3's third.
Four of the six scenarios beat both units outright: Weekend Camping, an 8-Hour Blackout, a Remote Workday, and Van Life Daily all ask for more than either can deliver, Van Life Daily by the widest margin (4,685Wh against a 1,024Wh ceiling). That's not a knock on DELTA 3 — it's a reminder that the bigger of these two still tops out well short of whole-day, whole-house, or whole-van power. Land in that territory and you're shopping the wrong size class, DELTA 3 included.
Portability & Form Factor
Selected because: 27 lbs vs 10.4 lbs is a 2.6x gap that tracks daily-carry use versus a fixed, panel-fed setup.
weight
Twenty-seven pounds is a two-handed lift out of a trunk or up a flight of stairs — manageable, but something you plan for. Ten-point-four pounds is a bag you swing over one shoulder without thinking about it. That's not a rounding difference: DELTA 3 is 2.6 times heavier (27 divided by 10.4), and the gap shows up every time you move either unit, not just on moving day.
The weight split tracks how each is actually meant to live. DELTA 3 is a unit you set down once — by the fridge, at the campsite entrance, next to the breaker panel — and feed with panels for hours at a stretch. RIVER 3 MAX at 10.4 lbs is built to move with you daily: the tailgate, the boat, the back seat, wherever the day's plan changes. Buy for the one you'll actually carry, not the one with the bigger number.
Growth Path
Selected because: Both are technically expandable; the real differentiator is DELTA 3's 500W solar ceiling against RIVER 3 MAX's 110W.
solar input
Both units accept EcoFlow's expansion batteries, so 'expandable' alone doesn't split this pair. The real growth-path difference is how fast either one refills from the sun: 500W maximum input on DELTA 3 against 110W on RIVER 3 MAX. Run DELTA 3's own numbers — 1,024Wh divided by 500W — and a full-rate fill takes about two hours; RIVER 3 MAX, on its 110W ceiling, takes 7.4 hours to fill a battery less than half the size.
That matters most exactly when you'd want to expand: off-grid, multi-day, panel-fed use, where RIVER 3 MAX's 110W ceiling doesn't get faster no matter how many add-on batteries you bolt onto it — the whole stack still feeds through the same narrow doorway. If solar is central to how you'll use this long-term, DELTA 3's growth path is the one that actually holds up as capacity grows.
What the Specs Don't Tell You
Selected because: Solar recharge speed and the warranty-cost math both need unpacking so neither gets mistaken for a defect or a value gap.
Neither gotcha here is a red flag — both fire as informational, not as a warning about a defect. RIVER 3 MAX's slower solar refill and the warranty math below are consequences of buying the smaller, cheaper unit, not evidence anything's wrong with it.
Same five-year warranty on both, so cost per warranty-year is just price divided by five: $110 for DELTA 3, $64 for RIVER 3 MAX. That gap is the price difference wearing a different unit of measurement — it says nothing about which unit is built better, only which one cost more to buy.
Strengths & trade-offs
EcoFlow DELTA 3
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$230) than the RIVER 3 MAX.
- –Significantly heavier (+16.6 lbs), making it harder to move.
EcoFlow RIVER 3 MAX
Strengths
- +Costs $230 less
- +Lighter by 16.6 lb
Trade-offs
- –Weaker inverter (-1,200W) limits appliance compatibility.
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
This one needs 2,100Wh, and neither unit gets there — DELTA 3 would need 241% of its own usable capacity to cover it, RIVER 3 MAX 432%. A load like this calls for a bigger unit than either of these, not a choice between them.
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
An 8-hour blackout at this draw needs 1,645Wh — 189% of DELTA 3's usable capacity and 338% of RIVER 3 MAX's. If your blackout math looks like this, size up past both units before comparing prices.
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
DELTA 3
Both handle a CPAP overnight without stress — RIVER 3 MAX using 66% of its usable capacity, DELTA 3 just 37%. DELTA 3 wins on margin alone; if this is the only job you need done, RIVER 3 MAX already has plenty of room and costs less.
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
A full remote workday needs 910Wh, just enough to nudge past even DELTA 3's usable capacity (105%) — RIVER 3 MAX isn't close at 187%. Either gets you most of a workday; neither gets you all of one without a midday recharge.
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
DELTA 3
A tailgate afternoon needs 670Wh. DELTA 3 covers it with room left (77% of usable capacity); RIVER 3 MAX can't finish the day (138%). This is the scenario where the size gap stops being theoretical.
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
Van life's daily draw of 4,685Wh is beyond both by a wide margin: 538% of DELTA 3's usable capacity, 964% of RIVER 3 MAX's. Living off either full-time means a much bigger bank, solar array, or both; this comparison stops applying at this load.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the six scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: DELTA 3 runs 4.2h vs 2.4h.
$549 list · direct from EcoFlow
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–58hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–11.6hHigh-Draw Appliances
These reveal the real limitsscale 0–0.9h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
July 26, 2026
Verdict: the DELTA 3, on Power Score margin
Buy DELTA 3 unless you already know your ceiling is low. It clears Tailgate Party outright (77% of usable capacity, where RIVER 3 MAX would need 138% — more than it has) and a CPAP overnight with room to spare (37% against RIVER 3 MAX's 66%). Lifetime cost per kWh is practically tied ($0.18 vs $0.19), so price isn't the lever here — capacity and continuous output (1,800W vs 600W) are. The real exception: if your entire use case is a CPAP, a laptop, and phones, and you want the 10.4-lb unit you'll actually carry daily, RIVER 3 MAX does that job for $230 less ($549 vs $319) and there's no reason to pay for headroom you won't touch.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 26, 2026. The links below open EcoFlow's current price.
$549.00 list · direct from EcoFlow
or check the RIVER 3 MAX price$319.00 list
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated July 26, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): RV Living, Home Backup, Solar Generator, Food Truck.
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, DELTA 3 rates 4.3/5 (61st percentile of 24 Everyday-class units), and RIVER 3 MAX rates 4.7/5 (83rd percentile of 19 Compact-class units).
How the class ranking is computed →Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
The Solar Ceiling Is the Real Growth-Path Story
RIVER 3 MAX's 110W maximum solar input means a full recharge from empty takes 7.4 hours — the better part of a day of strong sun. DELTA 3's 500W ceiling fills its bigger 1,024Wh battery in about two hours (1,024Wh divided by 500W). Relying on panels through a multi-day outage, that gap is the difference between catching up by lunch and still chasing sun at dinner.
Same Warranty, Different Math
Both units carry a five-year warranty, so cost per warranty-year is just price divided by five: $110 for DELTA 3, $64 for RIVER 3 MAX. That gap is the price difference wearing a different unit of measurement — it says nothing about which unit is actually built better, only which one cost more to buy.
Full record above — the Test Desk pick is the DELTA 3.
Check DELTA 3 price →or check the RIVER 3 MAX 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 MAX is cheaper to buy, but the DELTA 3 is cheaper to own. At $0.18/kWh over its lifetime vs $0.19/kWh, the DELTA 3's higher cycle life and capacity make each dollar go further over the years.
Growth path
DELTA 3
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,024Wh.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
RIVER 3 MAX
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 572Wh.
Accepts up to 110W 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.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, but the DELTA 3's higher solar ceiling (500W vs 110W) gives it the stronger off-grid growth path — more panels can feed a bigger bank as it grows.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3
Field data on the standard DELTA 3 is limited — most published testing actually covers the Plus, Max, and Ultra siblings, so treat this as directional rather than exhaustive. What's specific to this unit: at loads under 200W the fans reportedly stay off entirely, and even at 500-800W they're barely audible from three feet awayA1.
The 10ms UPS switchover fast enough to keep a router or a CPAP running through a power cut is confirmed on a sibling model that shares the same switchover spec, not verified on the standard DELTA 3 directlyA2 — worth flagging given how thin the direct evidence is.
“At low loads (under 200W) the fans often stay completely off, making the Delta 3 effectively silent; under moderate load (500–800W) the fans are barely audible from three feet away.”
Sources
portablepowernerd.com · thesolarlab.com · outputreport.com
EcoFlow RIVER 3 MAX
Coverage of RIVER 3 MAX specifically is thinner than the platform-level RIVER 3 reviews it's usually bundled with, so some of this is inherited from the family rather than tested on this unit alone. What's consistent: reviewers describe the RIVER 3 platform's sub-30dB operation and IP54 build as genuinely rugged for the sizeB2, and its LiFePO4 cells are rated for 3,000-plus cycles — call it roughly a decade of regular useB3.
The recurring theme across reviewers is that the RIVER 3 line is well-engineered for people who don't need to power a whole house, just a smaller set of loads on the moveB4.
“Offers up to 858Wh of LFP battery storage — the largest capacity in the RIVER 3 line — as a compact, portable unit.”
Sources
powerstationadvisor.com · ecoflow.com · backuppowerhub.com · amazon.com · portablepowernerd.com
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Largest RIVER 3 capacity (up to 858Wh), quiet IP54 build, and 3,000-cycle LFP are the standout points. [RIVER 3 MAX · 3 entries]
- A1
“At low loads (under 200W) the fans often stay completely off, making the Delta 3 effectively silent; under moderate load (500–800W) the fans are barely audible from three feet away.”
portablepowernerd.com — EcoFlow Delta 3 Tested: 2026 Hands-On Review; thesolarlab.com · 2026 · [positive]
- A2
“UPS switchover works as advertised — a power cut results in a ~10ms handoff, fast enough that routers don't reset, fridges don't skip a compressor cycle, and CPAP machines don't interrupt therapy.”
outputreport.com / thesolarlab.com — DELTA 3 line UPS testing (observed on DELTA 3 Plus, which shares the 10ms UPS spec) · 2026 · [positive]
- B2
“Built on the same RIVER 3 platform reviewers praise for sub-30dB whisper-quiet operation and IP54 ruggedness.”
backuppowerhub.com — RIVER 3 review · 2026 · [positive]
- B3
“LiFePO4 chemistry rated for 3,000+ cycles to 80% — roughly a decade of everyday use.”
backuppowerhub.com / amazon.com — RIVER 3 line · 2026 · [positive]
- B4
“Reviewers value the RIVER 3 family for quality engineering and genuine portability for those who don't need to power a whole house.”
portablepowernerd.com — RIVER 3 review · 2026 · [positive]
Research compiled July 26, 2026.
Who Should Buy Which
Buy the DELTA 3 if you…
- →You need to run a tailgate afternoon (670Wh) or a CPAP overnight with real margin, and 27 lbs is fine because the unit stays put once you set it down.
- →You want a real off-grid growth path: 500W of solar input means a full-rate refill takes about two hours (1,024Wh divided by 500W), not most of a day.
- →You're running anything that draws close to or above 600W continuously; RIVER 3 MAX physically can't power it, regardless of remaining charge.
Buy the RIVER 3 MAX if you…
- →Your load is a CPAP, a laptop, and phones — small electronics you carry daily, not a tailgate spread or anything pulling near 600W continuously.
- →You want the 10.4-lb unit you don't think twice about carrying, and $230 back in your pocket ($549 vs $319) that DELTA 3's extra headroom won't buy you anything for your use case.
If neither fits
Your real number is a genuine outage or a van-life daily load: Weekend Camping's 2,100Wh, an 8-Hour Blackout's 1,645Wh, a Remote Workday's 910Wh, or Van Life Daily's 4,685Wh all exceed what either unit holds. That's not a knock on either one — it's a sign you need a bigger EcoFlow, or a stacked and expanded system, not a choice between these two.
The Bottom Line
DELTA 3 and RIVER 3 MAX aren't fighting over price — a penny separates their cost per kWh — they're fighting over which size class your loads actually belong to. DELTA 3 clears the two scenarios that matter here outright, a tailgate afternoon at 77% of usable capacity and a CPAP overnight at 37%, while RIVER 3 MAX only ever ties on the smaller of the two, and does that using two-thirds of what it holds.
Buy DELTA 3 if you don't already know your ceiling — the extra 452Wh and 1,200W of continuous headroom cost nothing in lifetime value and buy real margin. Buy RIVER 3 MAX only if you do know it, and it's a CPAP, a laptop, and phones: then the $230 back in your pocket and the 10.4 lbs you'll actually carry are the better trade. Know your number before you check the price.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 3 worth the extra money over the RIVER 3 MAX?
Only if you need what the extra money buys: 452Wh more capacity (1,024Wh vs 572Wh) and three times the continuous output (1,800W vs 600W). If your loads stay under 600W and inside roughly what RIVER 3 MAX holds — phones, a laptop, a CPAP overnight — the extra $230 buys headroom you won't use.
Can the RIVER 3 MAX run a CPAP machine all night?
Yes. A CPAP overnight needs about 320Wh, which is 66% of RIVER 3 MAX's usable capacity, leaving real margin. DELTA 3 handles the same night using just 37% of its usable capacity, which is why it edges out on paper, but for this use case alone RIVER 3 MAX already has room to spare.
How long does the EcoFlow RIVER 3 MAX take to recharge from solar?
About 7.4 hours on its 110W maximum solar input. DELTA 3, on its 500W input, fills its larger 1,024Wh battery in roughly two hours (1,024Wh divided by 500W). If you're relying on panels through a multi-day outage, that gap compounds fast.
Which is more portable, the EcoFlow DELTA 3 or RIVER 3 MAX?
RIVER 3 MAX, decisively — it's 10.4 lbs against DELTA 3's 27 lbs, 2.6 times lighter. If the unit needs to move with you daily rather than sit in one place, that weight gap matters more than the capacity gap.
Is the DELTA 3 or RIVER 3 MAX cheaper to own long-term?
They're nearly identical: $0.18 per lifetime kWh for DELTA 3 versus $0.19 for RIVER 3 MAX. Neither is the 'value' pick on cost alone — pick based on the capacity and continuous output your loads actually need, not lifetime cost per kWh.
Where to buy
EcoFlow DELTA 3Pick
$549.00
$549.00 list · direct from EcoFlow
EcoFlow RIVER 3 MAX
$319.00
$319.00 list · direct from EcoFlow
Prices may vary by retailer and are subject to change.