Head-to-head test
EcoFlow DELTA 2 Max vs Jackery Explorer 1500 Ultra
One of these clears an 8-hour blackout with usable capacity left over; the other's math needs more energy than it holds.
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
EcoFlow
DELTA 2 Max
4,071Power Score · Appliance Class
$949.00 list · direct from EcoFlow
Jackery
Explorer 1500 Ultra
3,193Power Score · Appliance Class
$999.00 list · direct from Jackery
Spec deltas
An 8-hour blackout draws about 1,645Wh. Feed that load to the DELTA 2 Max and it uses 94% of its usable capacity — tight, but it finishes. Feed it to the Explorer 1500 Ultra and the math needs 126% of what the battery holds; the power comes back before it does.
Price cuts the other way. The Explorer 1500 Ultra is $298 cheaper up front and five cents lower per lifetime kilowatt-hour, and its battery is rated for 4,000 cycles against the DELTA 2 Max's 3,000. Both facts are true at once, which is why this comes down to one question: are you buying for an extended outage, or for lighter, shorter loads where either battery has room to spare?
For CPAP overnight, both handle it easily — 18% and 25% of usable capacity — and it's a genuine tie. The gap only opens at the high end, where a sealed, non-expandable design meets a wall the DELTA 2 Max's bigger pack and expansion batteries don't.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
The DELTA 2 Max clears the same load with about 6% of its usable capacity to spare, while the Explorer 1500 Ultra comes up roughly a quarter short. That's not a close call decided by convenience features — it's one battery that finishes the outage and one that doesn't.
8-Hour Blackout scenario needs about 1,645WhDELTA 2 Max uses 94% of usable capacity for that load; Explorer 1500 Ultra would need 126%
Why it mattersAnyone buying specifically for extended blackout coverage should take the DELTA 2 Max; the Explorer 1500 Ultra isn't sized for that particular job.
rated cycles
With total energy delivered a wash, price is what actually separates them: $1,297 works out to $0.21 per lifetime kWh for the DELTA 2 Max against $0.16 for the Explorer 1500 Ultra — five cents cheaper, every kWh, for the life of the unit.
DELTA 2 Max: 2,048Wh capacity x 3,000 cycles = 6,144 total lifetime kWhExplorer 1500 Ultra: 1,536Wh capacity x 4,000 cycles = 6,144 total lifetime kWh (identical)
Why it mattersA buyer who cares purely about total power delivered per dollar should default to the Explorer 1500 Ultra unless the bigger single-charge capacity specifically matters to them.
The Explorer 1500 Ultra uses a sealed titanium-alloy cooling structure instead of the DELTA 2 Max's fan-forward designB1, a genuinely different approach — but it's a new launch with no comparable owner noise reports yet, so it can't be called the quieter unit, only the untested one.
Both units list an identical 30 dB noise specOwners report DELTA 2 Max fan noise gets noticeably louder under heavy load or while chargingA1
Why it mattersDon't trust the identical 30 dB number for a CPAP or bedroom setup; the DELTA 2 Max's real operating noise is documented and worth planning around, and the Explorer 1500 Ultra's isn't documented at all yet.
If power needs increase later, the real comparison isn't $999 versus $1,297 once; it's $999 now plus a second full unit later versus $1,297 once with an expansion path already built in.
DELTA 2 Max supports EcoFlow expansion batteries (expandable)Explorer 1500 Ultra is a sealed, non-expandable systemPrice difference is $298 ($1,297 vs $999)
Why it mattersBuyers who expect their power needs to grow — more gear, longer trips, partial home backup — should value the DELTA 2 Max's expansion path now rather than pay twice later.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: The blackout load is the one structural fail point between them; workday/tailgate margins matter too.
The split runs exactly where the load gets heavy. An 8-hour blackout draws about 1,645Wh — enough to use 94% of the DELTA 2 Max's usable capacity and finish the outage, but more than the Explorer 1500 Ultra's smaller pack holds at all (126% needed). Remote workday and tailgate loads tell a softer version of the same story: both units finish the job, but the Explorer 1500 Ultra spends 70% and 51% of its capacity doing it where the DELTA 2 Max spends 52% and 38% — less margin if the day runs long or the party doesn't stop at sundown.
CPAP overnight is a genuine tie — 18% and 25% of usable capacity, both with plenty to spare, so decide on price there instead. And both units fail the two biggest loads outright: a full weekend campsite (about 2,100Wh) and van-life daily use (about 4,685Wh) ask for more than either battery holds, structural non-starters that neither spec sheet talks you out of.
Lifetime Value
Selected because: Price and cost-per-kWh favor Jackery outright — the honest counterweight to the scenarios section.
cost / lifetime kWh
Run the math on total lifetime energy and something odd shows up: both units deliver exactly 6,144 kWh over their rated cycle life — the DELTA 2 Max's bigger battery times fewer cycles lands on the same number as the Explorer 1500 Ultra's smaller battery times more cycles. The only real difference is what you paid to get there: $1,297 versus $999, which is the entire reason the DELTA 2 Max costs $0.21 per lifetime kWh against the Explorer 1500 Ultra's $0.16.
That gap holds at the warranty level too — about $259 per warranty year for the DELTA 2 Max, $200 for the Explorer 1500 Ultra. On pure cost-to-own, Jackery wins outright; the only question is whether the DELTA 2 Max's extra headroom in the scenarios above is worth the premium.
Growth Path
Selected because: Expandable vs sealed reframes the price gap for buyers whose needs might grow.
solar input
The DELTA 2 Max supports EcoFlow's expansion batteries — you add capacity later without replacing the base unit. The Explorer 1500 Ultra is a sealed system: what you buy is the ceiling, and outgrowing 1,536Wh means buying an entirely separate unit, not an add-on.
That reframes the $298 price gap. It isn't $999 versus $1,297 once — for a buyer whose power needs are still growing, it's $999 now plus a second unit later versus $1,297 once with room already built in. For anyone whose needs are already settled, that math never comes into play, and the sealed design isn't a downside at all.
What the Specs Don't Tell You
Selected because: Surfaces Jackery's real cycle-life edge and warranty value — the honest catch against the DELTA 2 Max pick.
rated cycles
Here's the catch on the DELTA 2 Max side: the Explorer 1500 Ultra actually beats it on raw cycle life, 4,000 cycles against 3,000, despite the smaller battery. At daily use that works out to roughly 11 years for the Explorer versus 8.2 for the DELTA 2 Max before the battery becomes the limiting factor — a real advantage for Jackery that the capacity numbers alone don't show.
Both carry the same 5-year warranty, so that part is a wash; the difference is what you paid to get it, about $59 less per warranty year on the Explorer 1500 Ultra. None of that changes the blackout math above, but it's a legitimate reason to reconsider if your loads never actually approach the DELTA 2 Max's advantage.
Strengths & trade-offs
EcoFlow DELTA 2 Max
Strengths
- +Costs $50 less
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Significantly heavier (+12.1 lbs), making it harder to move.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Explorer 1500 Ultra's 4,000, so it wears out sooner.
Jackery Explorer 1500 Ultra
Strengths
- +Lighter by 12.1 lb
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Weaker inverter (-600W) limits appliance compatibility.
- –Sealed capacity — the DELTA 2 Max can add batteries to grow past 1,536Wh; this one can't.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
Neither unit
Neither battery gets through a full weekend of camping loads on one charge — the DELTA 2 Max is closer at 121% of usable capacity, but that's still short. Bring solar input or plan a mid-trip recharge no matter which one you buy.
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 2 Max
This is the load that separates them. The DELTA 2 Max uses 94% of its usable capacity and finishes the outage; the Explorer 1500 Ultra needs 126% and doesn't.
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
Both handle a CPAP overnight without breaking a sweat — 18% and 25% of usable capacity respectively. At this load, decide on price and portability, not runtime.
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 2 Max
Both technically finish a remote workday, but the DELTA 2 Max does it using about half its capacity while the Explorer 1500 Ultra burns through 70% of its smaller pack. More margin means more room if the day runs long.
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 2 Max
Both cover a tailgate's load. The DELTA 2 Max leaves more of its capacity in reserve than the Explorer 1500 Ultra does — the difference shows up if the party runs past sundown or someone adds a speaker nobody budgeted for.
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
Daily van-life loads (roughly 4,685Wh) overwhelm both batteries by a wide margin — neither is sized for full-time off-grid living on its own. This is a job for a larger fixed system or multiple units, not either box here.
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 2 Max runs 8.5h vs 6.4h.
$949 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 0–116.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–23.2hHigh-Draw Appliances
These reveal the real limitsscale 0–1.7h¹ 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 14, 2026
Verdict: the DELTA 2 Max
Take the DELTA 2 Max if extended blackout coverage is the actual use case: it uses about 94% of its usable capacity on an 8-hour outage's roughly 1,645Wh draw, while the Explorer 1500 Ultra would need about 126% — more than it holds. That structural gap, plus a real expansion path for growing needs, is worth the $298 premium and the five-cent-per-kWh lifetime cost disadvantage for anyone whose main worry is a real outage. If your loads are lighter — CPAP, a workday, a tailgate — or price is the deciding factor, the Explorer 1500 Ultra covers all of those too and costs less doing it.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 14, 2026. The links below open EcoFlow's and Jackery's current prices.
$949.00 list · direct from EcoFlow
or check the Explorer 1500 Ultra price$999.00 list
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated July 14, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): 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 2 Max rates 3.9/5 (33rd percentile of 25 Large-class units), and Explorer 1500 Ultra rates 3.7/5 (22nd percentile of 24 Everyday-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.
A Sealed Box Has One Real Limit
The Explorer 1500 Ultra is a closed system — no bolt-on batteries, no capacity upgrade later. If your power needs are set, that's irrelevant. If they're not, the DELTA 2 Max's expansion path means you're not buying a second unit in two years.
More Cycles In The Smaller Pack
The Explorer 1500 Ultra is rated for 4,000 cycles against the DELTA 2 Max's 3,000 — a genuine edge for Jackery despite the smaller battery. At daily use that's roughly 11 years of cycle life for the Explorer versus 8.2 for the DELTA 2 Max.
Full record above — the Test Desk pick is the DELTA 2 Max.
Check DELTA 2 Max price →or check the Explorer 1500 Ultra 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
Both units have similar long-term ownership costs ($0.15/kWh vs $0.16/kWh). The price difference is what you see on the sticker — neither is a hidden bargain or rip-off.
Brand trust
EcoFlow
Ecosystem
Largest in portable power — 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels
Support
US-based phone/email/chat support (1-800-368-8604). Experiences are polarized — many report hassle-free prepaid-label replacements, but others report long waits and refurbished units sent for new claims. Pro tip: buying from Costco or Amazon gives you a stronger return safety net.
Community
Largest community in the space — Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
Fastest-charging technology (X-Stream), deepest product ecosystem, and most active innovation cadence. Supports up to 180kWh modular expansion with DELTA Pro Ultra X.
Worth knowing
The Oct 2025 DELTA Max 2000 recall (overheating/fire risk, 6 incidents) is worth noting. Also tested subscription paywalls for advanced app features in early 2025 before community backlash paused the plan. No parts or service offered out of warranty.
Jackery
Ecosystem
12-15+ models across Explorer (portable) and HomePower (home backup) series, plus SolarSaga panel ecosystem and innovative 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
A couple of older models still ship NMC chemistry with a shorter rated lifespan, so check the cycle rating on the specific unit — though most of the current line has moved to LFP. Generally perceived as overpriced for the specs offered compared to newer competitors. App experience is significantly behind rivals.
Analyst note
EcoFlow and Jackery are close competitors. Both have established support channels and growing ecosystems. Compare their specific warranty terms and community size for your peace of mind.
Growth path
DELTA 2 Max
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 2,048Wh.
Accepts up to 1,000W 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.
Explorer 1500 Ultra
FIXED CAPACITYFixed at 1,536Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 800W of solar. Suitable for a 1-2 panel setup.
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 1500 Ultra is sealed at 1,536Wh, which is fine if that covers you. The DELTA 2 Max starts at 2,048Wh and can grow beyond it with EcoFlow expansion batteries — real headroom the Explorer 1500 Ultra 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 2 Max
Owners consistently flag two things about the DELTA 2 Max: quick AC charging that gets it to a strong charge in well under an hour and a halfA2, and fan noise that gets genuinely loud under heavy load or while charging — noticeably beyond what the 30 dB spec figure suggests, though EcoFlow's Quiet Charging mode trades noise for a longer charge timeA1. After extended real-world use, reviewers also report no structural degradation in the LiFePO4 cells — it still performs like newA3.
The overall reviewer read is mixed-with-caveats rather than glowing: still worth buying, prized for its expandability and ecosystem compatibility, but not an unqualified recommendationA4.
“Fast AC wall charging — 0 to 80% in about 50 minutes and a full charge in roughly 80 minutes.”
Sources
powerstationadvisor.com · pcworld.com · thesolarlab.com · protoolsadvisor.com · trailandkale.com
Jackery Explorer 1500 Ultra
The Explorer 1500 Ultra's headline field claim is a true IP65 rating, built around a titanium-alloy multi-layer cooling structure rather than the fan-forward design the DELTA 2 Max relies on: fully sealed against dust, and rated to shrug off low-pressure water jets, heavy rain, and splashesB1. That's a genuinely different engineering approach from the DELTA 2 Max, whose owners report fan noise that gets noticeably louder under heavy load or while charging, despite an identical 30 dB spec figure on paperA1.
Whether the sealed design also means quieter real-world operation isn't something we can confirm yet. This is a CES-2026 launch, so there's no multi-year owner track record the way there is for the DELTA 2 Max — the ruggedness claim is well documented, but everything else about how it holds up over time is still an open question.
“Built around a 1,536Wh LFP battery with a true IP65 dustproof and water-resistant rating — unique in its price bracket — and a fully sealed titanium-alloy multi-layer cooling structure; totally protected against dust, and resistant to low-pressure water jets, heavy rain, and splashes.”
Sources
backuppowerhub.com · gearbrain.com · protoolreviews.com · jackery.com · thesolarlab.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
- Solid LFP durability, fast charging, and ecosystem/expandability are the praise; loud fans under heavy load or charging are the recurring complaint. [DELTA 2 Max · 3 entries]
- IP65 ruggedness (unique at its price), fast recharge, and the 4,000-cycle LFP battery are the standout praise; it is a newer CES-2026 launch so long-term owner data is thin. [Explorer 1500 Ultra · 3 entries]
- A1
“Fan noise is a significant issue — cooling fans can get loud, around 52 dB during heavy loads or charging; a Quiet Charging mode reduces noise but extends charge time, and giving it 6 inches of clearance helps airflow.”
powerstationadvisor.com / pcworld.com — DELTA 2 Max review · 2025-2026 · [negative]
- A2
“Fast AC wall charging — 0 to 80% in about 50 minutes and a full charge in roughly 80 minutes.”
thesolarlab.com / protoolsadvisor.com — DELTA 2 Max review · 2025-2026 · [positive]
- A3
“LiFePO4 chemistry rated for 3,000+ cycles to 80% with superior thermal stability; after 6 months of real use there was no structural degradation and it felt as solid as day one.”
powerstationadvisor.com / trailandkale.com — DELTA 2 Max review · 2025-2026 · [positive]
- A4
“Reviewers say it's still worth buying but with caveats — a versatile unit with expandability and ecosystem compatibility.”
thesolarlab.com / powerstationadvisor.com — DELTA 2 Max review · 2025-2026 · [mixed]
- B1
“Built around a 1,536Wh LFP battery with a true IP65 dustproof and water-resistant rating — unique in its price bracket — and a fully sealed titanium-alloy multi-layer cooling structure; totally protected against dust, and resistant to low-pressure water jets, heavy rain, and splashes.”
backuppowerhub.com / gearbrain.com — Explorer 1500 Ultra review · 2026 · [positive]
Research compiled July 14, 2026.
Who Should Buy Which
Buy the DELTA 2 Max if you…
- →Households planning for a real multi-hour blackout — the DELTA 2 Max is the only one of these two that comfortably clears an 8-hour outage's roughly 1,645Wh draw with capacity to spare.
- →Buyers who expect their power needs to grow — the expansion battery path means adding capacity later instead of replacing the whole unit.
- →Remote workers or tailgaters who want a wide safety margin rather than running the battery close to empty.
Buy the Explorer 1500 Ultra if you…
- →Buyers who want the lowest price today and the lowest cost per lifetime kWh — $999 upfront and five cents cheaper per kWh over the unit's life.
- →Anyone whose power station will sit somewhere genuinely exposed to dust, rain, or job-site conditions — a true IP65 rating is the one hard-to-fake advantage hereB1.
- →Owners who value raw cycle count over single-charge capacity — 4,000 cycles beats the DELTA 2 Max's 3,000.
If neither fits
If you need to power a full weekend campsite (about 2,100Wh across appliances) or run van-life daily loads near 4,700Wh, neither unit gets there on its own — both fall well short of that math. Look at a larger single unit, add solar input, or plan on more than one battery, rather than assume either box has the headroom.
The Bottom Line
The DELTA 2 Max is the one that actually finishes an 8-hour blackout — 94% of its usable capacity against the Explorer 1500 Ultra's 126%, a load the Jackery structurally can't complete. Pay the $298 premium if that's the scenario you're buying for, and you also get a battery you can expand instead of replace.
If budget is the deciding constraint, or your loads top out at an overnight CPAP or a short tailgate run, the Explorer 1500 Ultra does the job for less — $999 up front, a nickel cheaper per lifetime kWh, and more cycles in the battery to boot. Just don't buy either one expecting to run a full weekend campsite; that math beats both of them.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Can the Jackery Explorer 1500 Ultra handle an 8-hour blackout?
Not on its own. An 8-hour outage draws about 1,645Wh, which computes to roughly 126% of the Explorer 1500 Ultra's usable capacity — more than it holds. The DELTA 2 Max's larger 2,048Wh pack uses about 94% of its usable capacity for the same load, covering it with a small margin.
Is the DELTA 2 Max or Explorer 1500 Ultra cheaper to own long-term?
The Explorer 1500 Ultra is cheaper on both counts: $999 upfront versus $1,297, and $0.16 per lifetime kWh versus $0.21 for the DELTA 2 Max. Both units actually deliver the same 6,144 kWh of total lifetime energy, so the price difference is the entire gap.
Which one is quieter?
Both list an identical 30 dB spec, but that's not the full picture. Owners report the DELTA 2 Max's fans get noticeably louder under heavy load or while charging; the Explorer 1500 Ultra uses a different, sealed cooling design, but it's a new launch with no comparable owner noise data yet.
Can either power station expand if my needs grow?
Only the DELTA 2 Max. It supports EcoFlow's expansion batteries, so you can add capacity without replacing the base unit. The Explorer 1500 Ultra is a sealed, closed system — outgrow 1,536Wh and the only option is buying a second unit.
What about a full weekend of camping?
Neither unit covers it comfortably on one charge. A typical weekend camping load draws around 2,100Wh, which is about 121% of the DELTA 2 Max's usable capacity and 161% of the Explorer 1500 Ultra's. Plan on solar input to recharge mid-trip, or size up to a larger unit, regardless of which one you buy.
Where to buy
EcoFlow DELTA 2 MaxPick
$949.00
$949.00 list · direct from EcoFlow
Jackery Explorer 1500 Ultra
$999.00
$999.00 list · direct from Jackery
Prices may vary by retailer and are subject to change.