Head-to-head test
EcoFlow DELTA 3 Ultra Plus vs Jackery HomePower 3600 Pro Max
Matched on noise and transfer speed, this one comes down to the Pro Max's 512Wh more capacity and 2,000 more cycles against the DELTA's $300 lower price, real solar input, and proven app — the closest call the Jackery has.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
EcoFlow
DELTA 3 Ultra Plus
4,801Power Score · Appliance Class
$1,599.00 · direct from EcoFlow
Last checked 6 days ago. Prices move — check before you buy.
Jackery
HomePower 3600 Pro Max
5,159Power Score · The AC & Fridge Zone
$2,099.00 · direct from Jackery
Last checked 6 days ago. Prices move — check before you buy.
Spec deltas
The DELTA 3 Ultra Plus and the HomePower 3600 Pro Max are the closest pairing the Jackery faces, because the EcoFlow erases the advantages Jackery usually leans on. Both are rated 30 dB, both cut over in 10 milliseconds, so the quiet-and-fast-transfer story that settles other matchups is a dead heat here.
That leaves a clean trade. The Pro Max holds 512Wh more energy, lasts 6,000 cycles to the DELTA's 4,000, and weighs a touch less. The DELTA 3 Ultra Plus costs $300 less, lists a 1,600W solar input, and carries EcoFlow's best-in-class app and a real review record behind it.
So this is not a blowout in either direction — it is a genuine coin flip that lands, just barely, on the bigger, longer-lived battery. Which way you should go depends on one thing: whether you will actually cycle this enough for its longevity to matter.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
Feed both the same 2,100Wh weekend and the Pro Max ends it at 69% drained where the DELTA sits at 80% — same trip, but the Jackery finishes with a real reserve and the EcoFlow finishes hunting for sun, which is exactly why it is the one scenario of the six where these two do not tie.
Pro Max holds 3,584WhDELTA 3 Ultra Plus holds 3,072Wha weekend-camping load near 2,100Wh leaves the Pro Max at 69% used and the DELTA at 80%
Why it mattersIf your longest stretch between charges is a weekend or more, the Pro Max's extra 512Wh is a margin you will feel; for shorter gaps, both coast home.
rated cycles
Spread each sticker over the energy the pack will actually deliver and the pricier Pro Max becomes the cheaper one to own, about $0.08 a lifetime kilowatt-hour against $0.12 — but that only cashes in for someone who cycles a battery thousands of times, which describes a daily-use owner, not a few-weekends-a-year one.
Pro Max is $1,799 and rated for 6,000 cyclesDELTA 3 Ultra Plus is $1,499 and rated for 4,000 cyclesthe Pro Max works out to about $0.08 per lifetime kWh, the DELTA to about $0.12
Why it mattersDaily cyclers bank the Pro Max's longevity; occasional users never approach either ceiling and should weigh the DELTA's $300 lower price more than the cycle rating.
Because both units share the same 30 dB rating and the same 10ms transfer, Jackery's usual trump cards are off the table — what remains is a $300-cheaper EcoFlow with panels-ready charging and reviews that already confirm it runs quiet and holds togetherA13A8, set against a Jackery whose matching quiet and longevity are still only spec-sheet promises.
DELTA 3 Ultra Plus lists a 1,600W solar input and carries the category's best-rated appreviewers measured it staying quiet even under sustained loadA13 and called the build substantial, not fragileA8the Pro Max shipped in 2026 with no long-term field record
Why it mattersWant the surer thing today — solar, the better app, and proof it delivers — take the DELTA; the Pro Max wins only if its extra capacity and cycles are worth betting on a launch-week unit.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: Weekend Camping is the single scenario that separates them, and it favors the Pro Max.
Five of the six usage scenarios come back as ties, which tells you how evenly matched these are. The one that breaks is Weekend Camping: the same roughly 2,100Wh load leaves the Pro Max at 69% used and the DELTA 3 Ultra Plus at 80%, because the Jackery simply holds 512Wh more.
Both finish the weekend with power to spare, so this is not about running out. It is about margin — the Pro Max ends with a deeper reserve for a cloudy morning or an extra night, and that cushion is the entire practical difference the capacity gap buys.
Lifetime Value
Selected because: Cheaper to own over its life, but only for a buyer who cycles it hard — the honest hinge.
cost / lifetime kWh
The Pro Max costs $300 more and is still cheaper to own, because 6,000 cycles pass far more energy than 4,000 before the pack fades — about $0.08 a lifetime kilowatt-hour against $0.12. On paper the Jackery wins the long game.
The hinge is whether you play a long game at all. Reaching even 4,000 cycles takes years of near-daily use; a weekend camper or occasional-outage owner never gets close, so both batteries outlive the need and the DELTA's $300 head start is money that simply stays in your pocket. This section rewards the heavy user and quietly flips to the EcoFlow for everyone else.
Growth Path
Selected because: The DELTA's documented 1,600W solar input versus the Pro Max's proprietary, less-specified path.
solar input
Both units expand, but they do not charge from the sun the same way. The DELTA 3 Ultra Plus lists a clean 1,600W solar input; the Pro Max's solar path is less clearly specified, and an early reviewer flagged that it runs over a proprietary connector rather than the industry-common XT60B3.
For a grid-tied home that is a footnote. For an off-grid build leaning on panels, it is a real point in the DELTA's favor — a documented input and standard connectors beat an ambiguous one every time you are standing in a field wiring it up.
Brand Trust
Selected because: Matched hardware means app, ecosystem, and track record carry more weight than usual.
When two units match this closely on hardware, the software and the track record do the deciding, and both lean EcoFlow. The DELTA's app rates 4.6 on iOS against Jackery's 2.3-to-3.3, and it earns specific praise for features like automatic top-offs before forecast stormsA12 — the kind of polish that shows up daily.
Jackery's counter is reach: buy it and return it at Costco or Home Depot, real insurance on a $1,799 unit. But when the batteries are this evenly matched, a weak app and a launch-week reputation are exactly the soft spots that tip a close call, and here they tip it toward the EcoFlow for anyone who values certainty.
Strengths & trade-offs
EcoFlow DELTA 3 Ultra Plus
Strengths
- +Costs $500 less
- +Faster solar charging
Trade-offs
- –Shorter-lived battery — rated for 4,000 charge cycles vs the HomePower 3600 Pro Max's 6,000, so it wears out sooner.
Jackery HomePower 3600 Pro Max
Strengths
- +Lighter by 0.5 lb
- +Larger battery capacity
- +Higher AC output
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$500) than the DELTA 3 Ultra Plus.
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
HomePower 3600 Pro Max
Same 2,100Wh weekend, two different reserves at the end of it. The Pro Max finishes near 69% used and the DELTA 3 Ultra Plus near 80%, because the Jackery simply holds more — 3,584Wh to 3,072Wh. Both make it through; only one ends the trip with real margin for a cloudy morning or a bonus night. This is where the extra capacity earns its keep.
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
Either unit
Both ride out an eight-hour essentials load without strain, so the night itself is a tie. The tiebreak is everything around it: the DELTA can refill from 1,600W of panels in a multi-day event and costs $300 less to buy, while the Pro Max answers with a bigger reserve and more cycles behind it. Short outage, coin flip; long one, sun favors the DELTA and the larger tank favors the Pro Max.
Battery budget usedlower = more headroom
LOAD Fridge 150W×8h · Router + Modem 20W×8h · LED Lights (4 bulbs) 40W×6h · Phone Charger 15W×3h
SCN-03 · 8 hours · needs 320Wh
CPAP Overnight
Sleep therapy without interruption — the #1 medical use case
Either unit
A CPAP is about 40W for eight hours, so both cover the night many times over and the capacity margin is a formality. They're also within a decibel or two of each other, so the one thing that would separate them doesn't. Buy whichever is cheaper or easier to carry.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
Either unit
Both power your workstation all day without strain, and their USB-C output is a wash — pick on weight, ports, or price.
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
Either unit
Both handle game day easily. Since capacity isn't the deciding factor, weight is: at 73.9 lbs the HomePower 3600 Pro Max is the one you'll be glad you brought. Fan noise under load is worth a listen too — it's audible in the lulls between songs.
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 DELTA 3 Ultra Plus comes up 2,074Wh short (about 56% covered), the HomePower 3600 Pro Max 1,639Wh (65%). Either gets you most of the way, so this is a scenario you plan around rather than one you should rule them out for.
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: HomePower 3600 Pro Max runs 14.9h vs 12.7h.
$2,099 list · direct from Jackery
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 0–203.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–40.6hHigh-Draw Appliances
These reveal the real limitsscale 0–3h¹ 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 18, 2026
Verdict: the HomePower 3600 Pro Max
The HomePower 3600 Pro Max edges this, but narrowly, and only on the numbers. It holds 512Wh more (3,584Wh to 3,072Wh), lasts 6,000 cycles to the DELTA's 4,000, weighs a little less, and works out cheaper to own over a decade at about $0.08 a lifetime kilowatt-hour against $0.12. It even wins the one usage scenario that separates the two — a full weekend off-grid, where it ends at 69% used against the DELTA's 80%. What keeps this close is that the DELTA 3 Ultra Plus neutralizes Jackery's usual edges: both are rated 30 dB and both cut over in 10ms. And the EcoFlow gives back real things — $1,499 against $1,799, a documented 1,600W solar input, the category's best app, and a review record that already proves it runs quiet and steady. Cycle hard and value capacity: Pro Max. Want solar, the better app, and a sure thing today: DELTA.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 18, 2026. The links below open EcoFlow's and Jackery's current prices.
$2,099.00 · direct from Jackery
Last checked 6 days ago. Prices move — check before you buy.
or check the DELTA 3 Ultra Plus price$1,599.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 18, 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, DELTA 3 Ultra Plus rates 4.9/5 (96th percentile of 25 Large-class units), and HomePower 3600 Pro Max rates 4.4/5 (67th percentile of 16 Home Backup-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.
Weight is close to a wash
At 73.85 pounds the Pro Max is a hair lighter than the DELTA's 77.2, but both are two-person lifts you set down where they will live. Nobody chooses between these two on weight; it is a rounding error next to capacity, price, and solar.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. Worth saying because the per-dollar framing can suggest otherwise: the DELTA 3 Ultra Plus works out at 3.1 years of cover per $1,000 spent against the HomePower 3600 Pro Max's 2.4, but that spread is the price gap, not the terms.
More cycles, if you spend them
The Pro Max is rated for 6,000 charge cycles to the DELTA's 4,000, which is why it costs less per lifetime kilowatt-hour despite the higher price. The catch is that you only bank that by cycling the battery for years. A weekend or occasional-outage owner never nears either number, so the longevity edge fades and the $300-cheaper DELTA takes the value win.
Full record above — the Test Desk pick is the HomePower 3600 Pro Max.
Check HomePower 3600 Pro Max price →or check the DELTA 3 Ultra Plus 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 DELTA 3 Ultra Plus is cheaper to buy, but the HomePower 3600 Pro Max is cheaper to own. At $0.1/kWh over its lifetime vs $0.13/kWh, the HomePower 3600 Pro Max's higher cycle life and capacity make each dollar go further over the years.
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, and chat support, though experiences run hot and cold; buying through Costco or Amazon adds a stronger return backstop.
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
EcoFlow's calling cards are fast charging and cadence — it iterates quickly and its app is genuinely useful, with touches like automatic pre-storm top-offs that reward daily owners.
Worth knowing
For the record: EcoFlow ran an October 2025 recall on the DELTA Max 2000 for overheating risk, and it once floated paywalling advanced app features before backlash shelved the idea.
Jackery
Ecosystem
Jackery spans portable Explorer units and the HomePower home-backup line, with its own SolarSaga panels and some genuinely novel form factors.
Support
US-based support but widely criticized. Reddit reports describe slow/dismissive responses, scripted AI agents, strict receipt requirements for warranty claims, and refurbished replacements for clearly defective units. Strongly recommended: buy from Costco or Amazon for return protection.
Community
Smallest community of the major brands — Reddit r/Jackery has ~2,000 members. YouTube presence is solid due to brand recognition.
App experience
Rated 2.3-3.3/5 iOS and Android — the weakest app experience of the major brands. Multiple confusing apps (Jackery app vs Jackery Home) and mandatory login even offline.
Unique strength
Highest brand recognition and widest retail distribution (Costco, Home Depot, Best Buy, Amazon). The "Toyota" of power stations — dependable, proven, wide availability. Innovative form factors like the Solar Gazebo and Solar Mars Bot.
Worth knowing
Its app is the weakest among the major brands, rated 2.3 to 3.3, with a confusing split between apps and a mandatory login even offline — a real soft spot on a unit built around app-managed backup.
Analyst note
With the hardware this evenly matched, software becomes the deciding vote, and EcoFlow holds it — a better app and a deeper accessory bench. Jackery's edge is retail trust: it is the one you can carry back to a big-box store. For a close call like this one, the polished, panels-ready EcoFlow is the more comfortable long-term companion for most buyers, and the Jackery is the pick when raw capacity and cycle life outrank everything else.
Growth path
DELTA 3 Ultra Plus
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,072Wh.
Accepts up to 1,600W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
HomePower 3600 Pro Max
EXPANDABLESupports Jackery expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,584Wh.
Accepts up to 1,200W of solar. Enough for a serious multi-panel array.
Limited ports. You'll likely need a power strip or splitter.
Expansion batteries are Jackery-specific. You're investing in the Jackery ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, but the DELTA 3 Ultra Plus's higher solar ceiling (1,600W vs 1,200W) 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 Ultra Plus
Reviewers line up on two things: it is quiet and it is solid. Even pushed hard, the DELTA 3 Ultra Plus runs about as quietly as EcoFlow's premium Pro Ultra lineA1A2, and its pass-through holds up — no output throttling tied to input wattage, and no dip when you pull it off the wallA4A6. The build gets called substantial rather than fragile, with moisture resistance and a rated short dropA8A14.
The knocks are weight and list price. It is not light, and reviewers flag the stickerA9, though at the roughly $1,499 street price it actually sells for, the value case shifts sharply in its favorA10A11. The app draws specific praise, including a Storm Guard feature that tops the battery off automatically when severe weather is forecastA12.
“even when you're pushing it hard, the DELTA 3 Ultra Plus runs much quieter than older EcoFlow models, like the DELTA 2 Max”
Sources
thesolarlab.com · postperspective.com · appleinsider.com · digitaltrends.com · storagereview.com
Jackery HomePower 3600 Pro Max
With the Pro Max shipping only in 2026, the early feedback is reviewer reaction rather than long-term ownership, and one recurring flag is hardware particulars — an early reviewer asked why its solar hookup uses a proprietary connector instead of the industry-common XT60B3. On a page where the other unit lists a clean 1,600W solar input, that friction counts.
It is a genuine two-person lift to move, not a one-hand carry, by a hands-on reviewer's accountB8, which puts it in the same keep-it-where-you-install-it class as its rival. Its real answers to the DELTA are the bigger battery and the 6,000-cycle rating — but on a launch-week unit those stay promises on the spec sheet, not the stack of reviews the EcoFlow already has.
“Regarding your dislike of inverter fail to stay on if > 4000W passthrough is terminated, it's understandable. It's internal inverter can only handle 4000W 240V.”
Sources
powerstationlab.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
- Professional reviewers consistently describe the fan noise as very quiet even under heavy load, comparable to EcoFlow's premium DELTA Pro Ultra line. [DELTA 3 Ultra Plus · 3 entries]
- Reviewers report solid UPS/pass-through charging performance with no noticeable switchover issues or output throttling tied to input wattage. [DELTA 3 Ultra Plus · 2 entries]
- The unit's high weight (~74 lbs) and premium MSRP are repeatedly flagged as drawbacks, though discounted street pricing is seen as making the value proposition much stronger. [DELTA 3 Ultra Plus · 3 entries]
- Build quality/durability is praised as substantial and non-fragile across multiple independent reviews. [DELTA 3 Ultra Plus · 2 entries]
- Commenters and a press reviewer repeatedly question whether the marketed automatic transfer switch delivers true whole-home UPS coverage, given the 4,000W continuous ceiling and a gap between switchover-speed marketing claims and what testers actually notice in practice. [HomePower 3600 Pro Max · 3 entries]
- Getting the full ATS benefit requires extra infrastructure (a dedicated sub-panel or Jackery's smart panel), and the solar input uses a proprietary connector rather than the industry-common XT60. [HomePower 3600 Pro Max · 2 entries]
- Reactions to price and capacity are mixed: cheaper than the closest whole-home competitor but with roughly half the base capacity, and viewers flag the price point as a barrier despite liking the concept. [HomePower 3600 Pro Max · 2 entries]
- A1
“even when you're pushing it hard, the DELTA 3 Ultra Plus runs much quieter than older EcoFlow models, like the DELTA 2 Max”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · unknown · [positive]
- A2
“we'd probably say the noise it creates is similar to what you hear when you run the DELTA Pro Ultra, which is pretty amazing”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · unknown · [positive]
- A4
“Many power stations limit you to the input wattage when outputting power, but this EcoFlow power station does not”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · unknown · [positive]
- A6
“I didn't experience any shut-offs or dips when I unplugged the EcoFlow from the wall”
postperspective.com — Review: EcoFlow Delta 3 Ultra Plus Portable Power Station · 2026-04 · [positive]
- A8
“It does not feel cheap or fragile. Everything from the outer shell case to the plastic buttons and the AC cable feels substantial and durable”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11 · [positive]
- A9
“Weighing in at a thunderous 74 pounds, the Ultra is not considered lightweight by any standards”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11 · [mixed]
- A10
“Where it falls short is in price justification at its $2,899 MSRP”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review: Portability meets serious firepower · unknown (approx. 1 week old at capture) · [negative]
- A11
“At the heavily discounted street price of around $1,499–$1,599, the value equation shifts dramatically in the Ultra Plus's favor”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review: Portability meets serious firepower · unknown · [positive]
- A12
“EcoFlow's companion app adds genuinely useful features like Storm Guard, which automatically charges the unit when severe weather is detected”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review: Portability meets serious firepower · unknown · [positive]
- A13
“Each unit operates quietly at under 25dB, remaining unobtrusive even during sustained loads”
storagereview.com — EcoFlow DELTA 3 Max Plus & Ultra Plus Review · 2025-09-30 · [positive]
- A14
“the Delta 3 Ultra Plus can withstand drops of up to 0.2m, and both models feature moisture resistance to mitigate risks from overnight dew”
storagereview.com — EcoFlow DELTA 3 Max Plus & Ultra Plus Review · 2025-09-30 · [positive]
- B3
“Why doesn't Jackery use the common XT60 connector when hooking up solar? Seems proprietary.”
YouTube — The Solar Lab, "Jackery HomePower 3600 Pro Max - Don't Fall For This!" (viewer comment) · 2026-06 · [negative]
- B8
“At about 74 lbs, this is not a device you carry with one hand...you will need two people to lift it into the back of a pickup truck.”
powerstationlab.com — "Jackery HomePower 3600 Pro Max Review (2026): Delta Killer?" · 2026 · [mixed]
Research compiled July 18, 2026.
Who Should Buy Which
Buy the DELTA 3 Ultra Plus if you…
- →The value-and-solar buyer. It is $300 cheaper, it lists a 1,600W solar input the Pro Max does not clearly match, and its app is the best in the category — the safer, more flexible pick for most people today.
- →Anyone who wants proof before they spend. This unit has a real review record for quiet operation and steady pass-throughA6; the Pro Max is still trading on launch-week impressions.
Buy the HomePower 3600 Pro Max if you…
- →The buyer who goes the longest between charges. The 512Wh of extra capacity is the margin that wins a full weekend off-grid with reserve to spare, and the 6,000-cycle pack is built to be cycled daily for a decade.
- →The heavy-load, hard-use owner who will actually reach those cycles and wants the 4,000W and 8,000W output ceiling. For daily deep cycling, it is the cheaper unit to own across its life.
If neither fits
If you need a full 4,685Wh van-life day off a single battery, neither one covers it — size up or pair two. And if this feels like a toss-up, that is because it is: matched on noise and transfer speed, it comes down to the Pro Max's capacity and longevity against the DELTA's price, solar, and proven app. Decide which axis you actually care about and buy that one.
The Bottom Line
This is the closest call among the Pro Max's matchups, and it tips to the Jackery on the numbers: 512Wh more capacity, 6,000 cycles against 4,000, a little lighter, and cheaper to own over a decade of real cycling. It even wins the one usage scenario that separates the two, a full weekend off-grid.
But the margins are thin and the DELTA 3 Ultra Plus earns its half: $300 less, a real 1,600W solar input, the category's best-rated app, and a review record that already proves it runs quiet and steadyA6 — proof the launch-week Pro Max cannot offer yet. Cycle hard and value capacity, take the Pro Max. Want solar, the better app, and a sure thing today, the DELTA is the smarter buy.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the HomePower 3600 Pro Max better than the EcoFlow DELTA 3 Ultra Plus?
On the numbers, narrowly. The Pro Max holds 512Wh more, lasts 6,000 cycles to the DELTA's 4,000, and weighs a little less. But the DELTA 3 Ultra Plus is $300 cheaper, adds a 1,600W solar input, and has EcoFlow's much better app, so it is the stronger value for most buyers. This is the closest matchup the Pro Max has.
Which holds more power, the Pro Max or the DELTA 3 Ultra Plus?
The Pro Max, at 3,584Wh against 3,072Wh — about 512Wh more. That margin is enough to win a weekend-camping load with more reserve left, ending at 69% used against the DELTA's 80%, which is the one scenario where these two actually separate.
Does the DELTA 3 Ultra Plus handle solar better?
It lists a documented 1,600W solar input; the Pro Max's solar path is less clearly specified and, per an early reviewer, uses a proprietary connector rather than the common XT60. For an off-grid, panel-first setup, the DELTA is the more straightforward choice.
Which is the better long-term buy?
The Pro Max, if you cycle it hard: 6,000 cycles versus 4,000 works out to about $0.08 per lifetime kilowatt-hour against $0.12. But it is brand-new, so that longevity is a rating, while the DELTA 3 Ultra Plus already has a review record behind its number. Certainty today versus more cycles tomorrow is the real trade.
Where to buy
EcoFlow DELTA 3 Ultra Plus
$1,599.00
$1,599.00 · direct from EcoFlow
Last checked 6 days ago. Prices move — check before you buy.
Jackery HomePower 3600 Pro MaxPick
$2,099.00
$2,099.00 · direct from Jackery
Last checked 6 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.