Head-to-head test
EcoFlow DELTA Pro Ultra + 1 Battery vs Jackery Explorer 600 v2
One of these you carry to the campsite in one hand; the other takes two people to move once and then never moves again, so the only real question is whether you're carrying power or backing up a building.
Full profiles: EcoFlow DELTA Pro Ultra + 1 Battery → · Jackery Explorer 600 v2 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
EcoFlow
DELTA Pro Ultra + 1 Battery
10,756Power Score · Whole-Home Capable
$5,999.00 · direct from EcoFlow
Last checked 17 hours ago. Prices move — check before you buy.
Jackery
Explorer 600 v2
1,940Power Score · Device Hub
$499.00 · direct from Jackery
Last checked 17 hours ago. Prices move — check before you buy.
Spec deltas
The Explorer 600 v2 weighs 14 pounds and costs $570. The DELTA Pro Ultra with one expansion battery weighs 293.6 pounds and costs $5,999. That isn't a spec gap you weigh against features; it's the difference between a thing you carry and a thing you install, and it settles this page before any other number gets a vote.
Nineteen times the capacity, more than ten times the price, and one of them can't be picked up. The DELTA Pro Ultra + 1 Battery holds 12,288Wh and pushes 7,200W, enough to carry a house through a multi-day outage. The Explorer 600 v2 holds 640Wh and pushes 500W, enough for a laptop, a phone, some lights, and a CPAP. They're not competitors. They're answers to different questions.
So the real question isn't which is better; it's which one you're shopping for. If 640Wh covers your day, the Jackery is the one you'll live with: lighter, cheaper, and out the door today. If you're backing up a furnace and a fridge for three days, only the EcoFlow can do it, and its weight and price are the cost of that job rather than a flaw in it. And if you're somewhere in the middle, more than a weekend but less than a house, the honest answer is neither of these, which we'll get to.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
weight
That line means the DELTA Pro Ultra literally cannot win a scenario that requires leaving the house, no matter how much energy it stores; the engine marks it 'neither' for both Weekend Camping and Tailgate not because it runs out but because it can't get there. Its 12,288Wh is only an advantage in exactly one place: wherever it's parked.
DELTA Pro Ultra + 1 Battery weighs 293.6 lbsExplorer 600 v2 weighs 14.1 lbsthe engine returns 'neither' for Weekend Camping and Tailgate because the DELTA Pro Ultra 'doesn't travel'
Why it mattersIf your use ever involves moving the unit, the EcoFlow is out on the first lift and the 14-pound Jackery is the only real option on this page.
Between 'runs dry a third of the way into one outage' and 'overkill for a whole house' sits an enormous middle that neither of these fills: the 1,000-to-2,000Wh portable. The reader who needs real outage coverage but not a home-backup system is being shown two wrong sizes and a $5,999 gap between them.
Explorer 600 v2 has 544Wh usable after the flat 0.85 derate on 640Whan 8-hour blackout is modeled at 1,645Wh; the Jackery falls 1,101Wh short, about a third coveredthe DELTA Pro Ultra covers the same blackout with roughly 8,800Wh to spare, at $5,999
Why it mattersIf you want to run a fridge and some lights through a normal outage without installing anything, skip both and buy a mid-size portable in the 1,000-to-2,000Wh class.
rated cycles
A portable-power shopper cycles a sliver of that. The Jackery buyer is spending 640Wh on a good night, not 12,288Wh on a working day, so the DELTA Pro Ultra's per-kWh edge is real only for someone running near-daily house-sized loads. You don't recover $5,999 in per-kWh savings powering a CPAP; you just spend $5,999.
DELTA Pro Ultra lifetime cost is $0.12 per kWh; Explorer 600 v2 is $0.30 per kWhDELTA Pro Ultra delivers about 49,152 kWh over 4,000 cycles; the Jackery delivers 1,920 kWh over 3,000 cyclesDELTA Pro Ultra costs $5,999 against the Jackery's $570
Why it mattersBuy the low absolute price when your loads are small and the low per-kWh price only when your loads are enormous; almost no one cross-shopping a 14-pound Jackery is in the second group.
The specific dimensions that decide these two units — everything else is a tie.
Portability & Form Factor
Selected because: One unit weighs 14.1 lbs and rides on the front seat; the other weighs 293.6 lbs and is installed once. This is the axis the whole matchup turns on.
weight
The Explorer 600 v2 is a one-hand carry: 14 pounds, about a carry-on bag, and out to the car without a second thoughtB1B3. The DELTA Pro Ultra with its battery is nearly 300 pounds, which isn't a heavier version of that so much as a different physical category. Two people, bent knees, and a spot chosen once, because once it's down it's staying. The engine calls it a semi-permanent appliance, and that's the honest word for it.
So before any capacity number matters, answer one thing: does this unit ever have to move? If yes, whether that's camping, a tailgate, a job site, or a friend's outage across town, the EcoFlow is already out, and it doesn't matter that it's the bigger battery. You can't carry energy you can't lift.
Your Life, Your Pick
Selected because: Across the six modeled loads the Explorer 600 v2 finishes only the lightest, while the DELTA Pro Ultra + 1 Battery finishes everything except the trips that require leaving home, which is where 'buy neither' comes from.
Read the six scenarios as a map of the gap between these two. The Explorer 600 v2 finishes exactly one kind of day: a light one. A CPAP at 40 watts runs all night with charge to spare, and a quiet remote-work session comes close, but it covers only about 60% of a full 910Wh workday and taps out a third of the way through an 8-hour blackout. It's a phone-laptop-lights-and-a-CPAP unit, and it's honest about it.
The DELTA Pro Ultra finishes all of those with thousands of watt-hours left, then loses the two scenarios that involve leaving the driveway. Weekend Camping and Tailgate both come back 'neither,' because it has the energy and can't travel to spend it. That's the whole shape of the comparison in one table: the Jackery finishes the small jobs it can carry itself to, the EcoFlow finishes the big ones as long as they happen where it's parked. The day that needs more than the Jackery can hold and more mobility than the EcoFlow can offer is the day you buy neither of these.
Lifetime Value
Selected because: The DELTA Pro Ultra costs $0.12 per lifetime kWh against the Explorer's $0.30, a real edge that only cashes in at whole-home loads and is worth defusing before it sells you 293.6 pounds.
cost / lifetime kWh
The DELTA Pro Ultra is the cheaper unit to own per kilowatt-hour, $0.12 against the Explorer's $0.30, and that's a genuine number rather than a trick. But it only becomes money if you actually run 12,288Wh through it again and again. Over its rated life the EcoFlow delivers about 49,152 kWh; the Jackery, 1,920 kWh. If your life truly draws down a house-sized battery on repeat for a decade, the per-kWh math is decisive and the EcoFlow is the value buy.
For everyone else it's a mirage. You do not earn back $5,999 in per-kWh savings powering a CPAP and charging a laptop; you simply spend the $5,999. The Jackery's higher per-kWh cost is bolted to a $570 sticker, and $570 is the number your wallet actually feels. Buy the low absolute price when your loads are small; buy the low per-kWh price only when your loads are enormous.
Growth Path
Selected because: The DELTA Pro Ultra stacks more batteries toward partial-home backup; the Explorer 600 v2 is sealed at 640Wh. Which of those you need depends entirely on the job you're buying for.
solar input
Expandability splits these two along the same seam everything else does. The Explorer 600 v2 is sealed at 640Wh, and for a 14-pound grab-and-go unit that's not a limitation, it's the finished shape of the thing. You don't bolt expansion batteries onto a station whose entire point is that you can pick it up.
The DELTA Pro Ultra's expansion path is real and it points somewhere specific: stack more batteries and you're building toward partial-home backup, well past the 12,288Wh it already starts at. That's a genuine advantage, but only if that's the road you're on. If you're weighing these two because you might want a bigger battery someday, notice what 'bigger' means here: a heavier appliance and a larger installation, not a more capable suitcase. Growth in the EcoFlow's direction is growth away from portability.
What the Specs Don't Tell You
Selected because: The 293.6-lb lift, the 10-year versus 5-year warranty split, and the 0ms versus 20ms UPS ratings are the catches that outlive the spec table.
rated cycles
On the DELTA Pro Ultra the catch that matters most isn't on the spec sheet: we barely have field data at all. The fullest owner account is a single detailed forum threadA0, and that owner wasn't happy. The app has no real state-of-charge graph, and the percentage it does show drifted hard, a '90%' that slid to '8%' overnightA8A9, alongside radio-frequency interference on common frequencies and a support rep whose suggested fix was a Faraday cageA6A7. Read that as one person's experience rather than a verdict, because one thread is most of what existsA0. The spec-sheet catch is blunter: 293.6 pounds, set down once.
The Explorer 600 v2's catches are the flip side of being small and cheap. It's sealed at 640Wh, so there's no growing it, and its warranty runs 5 years to the EcoFlow's 10; if a fault surfaces in year 6, only one of these two is still covered. Neither point changes the recommendation. A light, sub-$600 unit that does small jobs well is what most people on this page actually want. Just size it honestly, because 640Wh is the finished ceiling, not a starting line.
Strengths & trade-offs
EcoFlow DELTA Pro Ultra + 1 Battery
Strengths
- +Larger battery capacity
- +Higher AC output
- +Longer warranty
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$5,500) than the Explorer 600 v2.
- –Significantly heavier (+279.5 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
Jackery Explorer 600 v2
Strengths
- +Costs $5,500 less
- +Lighter by 279.5 lb
Trade-offs
- –Weaker inverter (-6,700W) limits appliance compatibility.
- –Sealed capacity — the DELTA Pro Ultra + 1 Battery can add batteries to grow past 640Wh; this one can't.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the DELTA Pro Ultra + 1 Battery's 4,000, so it wears out sooner.
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 one gives you a powered weekend, for opposite reasons. The Explorer 600 v2 covers only about a quarter of a 2,100Wh weekend before it's empty; the DELTA Pro Ultra has energy to burn and weighs 293.6 pounds, so it isn't coming camping. One can't finish, the other can't come. A mid-size portable you can actually lift is the camping answer here.
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
DELTA Pro Ultra + 1 Battery
The Explorer 600 v2 taps out about a third of the way in, 544 usable watt-hours against the 1,645 an 8-hour blackout draws here. The DELTA Pro Ultra covers it and barely notices, with roughly 8,800Wh still in reserve. If riding out outages is why you're buying, the small Jackery isn't the tool, and this is exactly the job the big EcoFlow exists for.
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 pulls about 40 watts, so both of these run it all night and wake up with most of the battery untouched, the DELTA Pro Ultra with nearly all of it. Capacity isn't the question here, and neither is noise, since they're rated the same at low load. What actually differs is that one weighs 14 pounds and costs $570 while the other weighs 293.6 pounds and costs $5,999. For a device that sips power beside your bed, buy the one you can set on the nightstand shelf.
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
DELTA Pro Ultra + 1 Battery
The Explorer 600 v2 doesn't finish — 544Wh usable against the 910Wh this needs leaves it 366Wh short, about 60% of the scenario covered. The DELTA Pro Ultra + 1 Battery covers it with 9,535Wh to spare.
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 gives you a powered game day: the DELTA Pro Ultra + 1 Battery has the energy but doesn't travel, and the Explorer 600 v2 covers about 81% of the 670Wh. One can't go; the other can't finish.
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
DELTA Pro Ultra + 1 Battery
A van's daily draw here is 4,685Wh, and the Explorer 600 v2 covers about 12% of it before dinner; this simply isn't its scenario. The DELTA Pro Ultra handles the full day with thousands of watt-hours to spare, but note what that means in a van: 293.6 pounds bolted in and never moved. It's more than capable, so just be sure you want that much permanent weight riding in a vehicle.
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: DELTA Pro Ultra + 1 Battery runs 51h vs 2.7h.
$5,999 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 0–696.3hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–139.3hHigh-Draw Appliances
These reveal the real limitsscale 0–10.4h¹ 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 30, 2026
Verdict: the Jackery Explorer 600 v2
For the person who actually lands on this page, the Explorer 600 v2 is the one you'll live with: 14 pounds, $570, and enough for a phone, a laptop, some lights, and a CPAP. The DELTA Pro Ultra with a battery isn't a bigger version of it; it's a 293.6-pound, $5,999 whole-home backup appliance that answers a question the Jackery shopper isn't asking. Buy the Jackery if 640Wh covers your day. Buy the EcoFlow only if you're genuinely backing up a house and can give it a permanent spot. And if you need more than a weekend but less than a house, buy neither of these and look at a mid-size portable.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of August 30, 2026. The links below open EcoFlow's and Jackery's current prices.
$499.00 · direct from Jackery
Last checked 17 hours ago. Prices move — check before you buy.
or check the DELTA Pro Ultra + 1 Battery price$5,999.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated August 30, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, Home Backup, CPAP, Solar Generator, Tailgating, Food Truck, Apartment Balcony, Camping.
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 Pro Ultra + 1 Battery rates 3.7/5 (25th percentile of 29 Whole-Home / Off-Grid-class units), and Explorer 600 v2 rates 3.7/5 (26th 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.
293.6 Pounds Is Furniture, Not Luggage
This is a two-person, bent-knee lift, and after the first one you won't volunteer for a second. Measure the doorway and the shelf before it arrives, because wherever it lands is where it lives. That's fine for a home-backup appliance and disqualifying for anything you meant to carry.
640Wh Is the Ceiling, and That's Fine Here
The Explorer 600 v2 doesn't expand, but a 14-pound carry-anywhere unit isn't supposed to. Size it for the small jobs it's built for and the sealed design is a non-issue. The moment you find yourself wishing it were bigger is the moment you've outgrown this whole class, not just this model, and the fix is a different unit rather than an add-on battery.
Surge Power: Ratio and Ceiling Disagree
The Explorer 600 v2 holds the higher surge-to-continuous ratio (2× vs 1.5×), but the DELTA Pro Ultra + 1 Battery holds the higher absolute surge ceiling — 10,800W against 1,000W. These measure different things. The ratio says how much headroom an inverter keeps above its own rating; the ceiling says how big a startup spike it can actually swallow. A motor draws a number of watts at switch-on, not a multiple of someone else's rating, so on raw starting ability the DELTA Pro Ultra + 1 Battery is the stronger unit here — while the Explorer 600 v2 is the one running further below its own limit at steady state.
UPS Switchover: 0ms-rated vs ≤20ms
Both list a UPS mode, at different rated speeds. The DELTA Pro Ultra + 1 Battery is rated 0ms — a no-break design on paper, which is the maker's classification rather than a stopwatch result. The Explorer 600 v2 is rated ≤20ms — fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. If a computer with unsaved work is the thing being protected, the stated class is worth the attention; nothing here is a lab result.
10 Years vs 5, Read in Context
The EcoFlow carries double the coverage on paper. It matters most if you keep the unit long enough for a year-6 fault to become someone's problem, which is real but a smaller bet on a $570 Jackery than on a $5,999 EcoFlow. Judge it by how long you actually plan to keep the thing.
Battery Lifespan in Real Years
The DELTA Pro Ultra + 1 Battery 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 12,288Wh on the DELTA Pro Ultra + 1 Battery and 640Wh on the Explorer 600 v2, so count lifetime energy — roughly 49,152 kWh against 1,920 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 Explorer 600 v2.
Check Explorer 600 v2 price →or check the DELTA Pro Ultra + 1 Battery 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 Explorer 600 v2 is cheaper to buy, but the DELTA Pro Ultra + 1 Battery is cheaper to own. At $0.12/kWh over its lifetime vs $0.26/kWh, the DELTA Pro Ultra + 1 Battery'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, and genuinely a coin flip. Plenty of owners get a prepaid label and a fast replacement; others describe long waits or a refurbished unit sent against a new-unit claim. Buying through Costco or Amazon gives you a return backstop that EcoFlow's own queue sometimes 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
The deepest ecosystem in portable power and the fastest charging, and at the top of the range the DELTA Pro Ultra platform stacks into whole-home backup, which is precisely the tier this unit sits in.
Worth knowing
EcoFlow floated a subscription paywall for advanced app features in early 2025 and paused it after backlash, and there's no out-of-warranty parts or service, worth knowing on a unit you're buying partly for its 10-year coverage.
Jackery
Ecosystem
12-15+ models across Explorer (portable) and HomePower (home backup) series, plus SolarSaga panel ecosystem and innovative form factors
Support
US-based but the weak point. Reports run to slow or scripted responses, strict receipt requirements, and refurbished replacements for clearly dead units. The standard advice applies double here: buy from Costco or Amazon so the retailer's return policy, not Jackery's queue, is your safety net.
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
The most recognized name in the category and the widest retail presence: Costco, Home Depot, Best Buy, Amazon. It's the Toyota of power stations, proven and everywhere, easy to buy and easy to return.
Worth knowing
The app is the weakest of the major brands, mid-2s to low-3s in the stores with a mandatory login even offline, and Jackery is often seen as charging a premium for the name. On a simple 640Wh unit you'll barely touch the app, so it stings less here than it would on a complex one.
Analyst note
Different brands for different jobs, which fits two products that barely overlap. EcoFlow gives you the bigger ecosystem, the faster charging, and the longer warranty, the things that matter when a unit is a permanent part of your house. Jackery gives you retail ubiquity and dead-simple operation, the things that matter when you just want a light box that works and a store that will take it back. Neither brand's edge changes the core call, which is about size and portability, not badge.
Growth path
DELTA Pro Ultra + 1 Battery
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 12,288Wh.
Accepts up to 5,600W of solar. Enough for a serious multi-panel array.
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.
Explorer 600 v2
FIXED CAPACITYFixed at 640Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 200W of solar. Limited to a single portable panel.
Limited ports. You'll likely need a power strip or splitter.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
The Explorer 600 v2 is sealed at 640Wh, which is fine if that covers you. The DELTA Pro Ultra + 1 Battery starts at 12,288Wh and can grow beyond it with EcoFlow expansion batteries — real headroom the Explorer 600 v2 doesn't have if your needs climb toward partial-home backup.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA Pro Ultra + 1 Battery
Field data on this exact configuration is thin, so weigh what follows accordingly; the fullest source is one detailed DIY Solar Forum thread from early 2024A0. The owner there came away lukewarm, 'kind of meh' and unlikely to expand it into the houseA4, and catalogued specifics: no proper manual, only a superficial web guideA5; an app with no state-of-charge graph whose percentage swung from 90% to 8% overnightA8A9; and radio-frequency interference the unit threw even when idle, to which support's answer was a Faraday cageA6A7. Fan behavior comes up repeatedly, though the clearest noise notes we found may describe a sibling EG4 unit rather than the DELTA Pro Ultra itself, so take those as character rather than specA1A2A3.
What's missing says as much as what's there: no long-term durability reports, no cold-weather notes, and nothing at all on the '+1 Battery' expansion that's actually in this listingA0. If you buy this, you're an early data point, not the beneficiary of a thousand of them.
“When the fans are not on, the inverter emits zero noise...even when I put my ear against the case.”
Sources
windinmyface.com · diysolarforum.com
Jackery Explorer 600 v2
The Explorer 600 v2 reads as a genuinely well-liked little unit, with the praise clustered where you'd expect: it's cited as the lightest 600Wh-class station made, about 14 pounds, and owners call it affordable, easy to carry, and easy to operateB1B3. It's newer and sometimes out of stock as production scales, so long-term reports are still limitedB0. Two figures to hold loosely: some listings rate it at 600W rather than the 500W our database uses, and some cite a much higher cycle life than the 3,000 we list. We've stuck with the conservative numbers, and the marketed ones, if they hold up, only help its caseB0B4. The shift to LFP chemistry is the other repeated plus, though that specific claim we couldn't fully pin to this exact SKUB2.
“The world's lightest 600Wh-class power station at about 14 lbs — roughly 23% smaller than similar-capacity models.”
Sources
backuppowerhub.com · jackery.com · bestecosolar.com · mrsolar.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
- SoC/battery metering appears unreliable, with reported percentage dropping much faster than expected after resuming charge cycles [DELTA Pro Ultra + 1 Battery · 2 entries]
- Support interactions were unhelpful or dismissive when owners raised specific technical issues (manual gaps, RFI, missing SoC graph) [DELTA Pro Ultra + 1 Battery · 3 entries]
- Fan behavior/noise is a recurring point of owner scrutiny, though direct DPU-specific noise data is thin and partly inferred from sibling EG4 units [DELTA Pro Ultra + 1 Battery · 3 entries]
- Standout light weight (world's lightest 600Wh-class), a newer stable LFP battery, and easy operation are the praise; rated output and cycle figures vary across sources. [Explorer 600 v2 · 3 entries]
- A1
“Yuck—fans always run even on the expensive high end Delta Pro Ultra?”
windinmyface.com blog — 'Fan Noise with Solar Power / Solar Generators (Anker, Ecoflow, EG4)' (comment thread) · 2024-12 · [negative]
- A2
“When the fans are not on, the inverter emits zero noise...even when I put my ear against the case.”
windinmyface.com blog — 'Fan Noise with Solar Power / Solar Generators (Anker, Ecoflow, EG4)' (owner test notes, related EG4 12kPV/18kPV comparison to DPU) · 2024-12 · [positive]
- A3
“At 6.3kW of load, the fan turned on... The fans turned off when I reached about 4.5kW. This is probably the expected hysteresis behavior.”
windinmyface.com blog — 'Fan Noise with Solar Power / Solar Generators (Anker, Ecoflow, EG4)' (thermal/fan behavior test, note: performed on EG4 18kPV, referenced as comparison point to DPU) · 2024-12 · [mixed]
- A4
“Pulled the trigger on an EcoFlow Delta Pro Ultra (DPU) and I'm kind of meh on it and unlikely to expand or integrate it into the house.”
diysolarforum.com — 'EcoFlow Delta Pro Ultra issues' · 2024-02 · [negative]
- A5
“No real manual. All they have is the web user guide which is superficial if I'm being generous.”
diysolarforum.com — 'EcoFlow Delta Pro Ultra issues' · 2024-02 · [negative]
- A6
“Even when the inverter is not running, it interferes with common frequencies like 146.520MHz... Turn off the DPU, emission goes away.”
diysolarforum.com — 'EcoFlow Delta Pro Ultra issues' · 2024-02 · [negative]
- A7
“I contacted EcoFlow support and they told me I could put it in a "faraday cage".”
diysolarforum.com — 'EcoFlow Delta Pro Ultra issues' · 2024-02 · [negative]
- A8
“No State of Charge graph in the app. Figured if they were showing charts of Input and Output over time, they must have a SoC chart. Nope.”
diysolarforum.com — 'EcoFlow Delta Pro Ultra issues' · 2024-02 · [negative]
- A9
“After a few days of using it overnight and letting it charge back up to "90%", it'd go from "90%" down to "8%".”
diysolarforum.com — 'EcoFlow Delta Pro Ultra issues' · 2024-02 · [negative]
- B1
“The world's lightest 600Wh-class power station at about 14 lbs — roughly 23% smaller than similar-capacity models.”
backuppowerhub.com / jackery.com — Explorer 600 v2 review · 2026 · [positive]
- B2
“Uses a shift to LFP (LiFePO4) chemistry that is chemically more stable and far less prone to overheating, engineered with a rating for well over a decade of lifespan — higher than the figure in some spec listings.”
backuppowerhub.com / bestecosolar.com — Explorer 600 v2 review · 2026 · [positive]
- B3
“Owner feedback highlights that it is affordable, lightweight, easy to carry, and easy to operate.”
backuppowerhub.com — Explorer 600 v2 owner feedback · 2026 · [positive]
- B4
“Listed AC output varies by source — some cite a 600W rating where others show 500W — so its rated output figure is not fully consistent across listings.”
mrsolar.com / jackery.com — Explorer 600 v2 listings · 2026 · [mixed]
Research compiled August 30, 2026.
Who Should Buy Which
Buy the DELTA Pro Ultra + 1 Battery if you…
- →You're backing up a house, not a campsite: a furnace blower, a fridge, and a few circuits through a multi-day outage, with the unit living in the garage or utility room and never moving. 12,288Wh and 7,200W is that job.
- →You're building a system rather than buying a box, and you want to stack expansion batteries over time toward whole-home backup, with EcoFlow's ecosystem in mind for solar and panels.
- →You genuinely draw down a huge battery often enough that $0.12 per lifetime kWh is real money back, and its weight in a fixed spot reads as a feature rather than a problem.
Buy the Explorer 600 v2 if you…
- →You want power you can carry: 14 pounds out to the campsite, the tailgate, or the car, and back in the closet on Monday.
- →Your loads are small and known, a phone, a laptop, lights, and a CPAP at 40 watts that will run all night with charge to spare. 640Wh covers that, and you'd rather not pay for or lift anything bigger.
- →You want a no-drama emergency top-up for devices during a short outage at a sub-$600 price, from a brand you can buy at Costco or Amazon with an easy return.
If neither fits
Buy neither if you're in the big middle these two skip, needing more than a weekend but less than a house. If you want to run a fridge and some lights through a normal overnight outage without installing anything, the Jackery runs dry about a third of the way in and the EcoFlow is a 293.6-pound, $5,999 answer to a question you didn't ask. A single 1,000-to-2,000Wh portable, the class that sits between these two, is the unit you're actually looking for: a fraction of the EcoFlow's price, and a weight you can still move.
The Bottom Line
Strip away the spec sheet and this was decided by one physical fact: one of these you carry, the other you install. The Explorer 600 v2 is 14 pounds and $570, and for the person who wants power for a phone, a laptop, some lights, and a CPAP, it's the one you'll actually live with. The DELTA Pro Ultra is a nearly 300-pound, $5,999 home-backup appliance that answers a bigger and more permanent question, a good tool but not the one most people cross-shopping a 14-pound Jackery came here to buy.
So take the Jackery if 640Wh covers your day, and take the EcoFlow only if you're genuinely backing up a house and can give it a permanent home. If you're in the middle, too much for the Jackery to hold and more than you want to install and never move, close both tabs and look at a 1,000-to-2,000-watt-hour portable. That's the unit this matchup keeps pointing at without either contestant being it.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the DELTA Pro Ultra just a bigger Explorer 600?
No, it's a different category of product. The Explorer 600 v2 is a 14-pound portable you carry to a campsite; the DELTA Pro Ultra with a battery is a 293.6-pound, 12,288Wh home-backup appliance that gets installed once and stays put. They overlap on a spec sheet and nowhere in real life. Pick based on whether you're carrying power or backing up a building.
Can the Jackery Explorer 600 v2 run my house during an outage?
Not really. It holds 640Wh, about 544 usable, which covers a phone, a laptop, lights, and a CPAP overnight, but it runs dry roughly a third of the way through a typical 8-hour blackout load. For real outage coverage you need something much larger, whether that's the DELTA Pro Ultra or a mid-size portable in the 1,000-to-2,000Wh range.
Why is the EcoFlow 'cheaper per kWh' but more than ten times the price?
Because per-kWh cost spreads the price across a decade of cycling a huge battery. The DELTA Pro Ultra works out to $0.12 per lifetime kWh versus the Jackery's $0.30, but you only capture that if you actually run 12,288Wh over and over for years. If your loads are small, the $570 sticker is the number that matters and the per-kWh figure is a mirage.
Which is better for camping and tailgating?
The Jackery, easily, because the EcoFlow can't come. At 293.6 pounds the DELTA Pro Ultra doesn't travel, so our scenario model returns 'neither' for a powered weekend or tailgate: the EcoFlow has the energy but can't get there, and the 640Wh Jackery covers a light day but not a big one. For a self-contained weekend of real loads, both fall short and a 1,000Wh-class portable is the better tool.
Is the Jackery's 5-year warranty a dealbreaker next to EcoFlow's 10?
Only if you're keeping it a long time. Both are rated for thousands of charge cycles, 3,000 on the Jackery and 4,000 on the EcoFlow, so most owners replace on capability long before warranty runs out. But the split is real: if a fault appears in year 6, the EcoFlow is still covered and the Jackery isn't. On a $570 unit that's a smaller bet than on a $5,999 one, which is part of why the gap reads worse on paper than it plays out.
Brand matchup
EcoFlow vs Jackery: measured across every matchup →Related comparisons
Where to buy
EcoFlow DELTA Pro Ultra + 1 Battery
$5,999.00
$5,999.00 · direct from EcoFlow
Last checked 17 hours ago. Prices move — check before you buy.
Jackery Explorer 600 v2Pick
$499.00
$499.00 · direct from Jackery
Last checked 17 hours ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.