Head-to-head test
EcoFlow DELTA 3 Ultra Plus vs Jackery Explorer 1500 Ultra
Every number on the DELTA that stores or delivers power is exactly twice the Jackery's while the price is only half again as much, so this comes down to whether you'll ever have to pick it up.
Full profiles: EcoFlow DELTA 3 Ultra Plus → · Jackery Explorer 1500 Ultra →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
$1,599.00 · direct from EcoFlow
Last checked 1 day ago. Prices move — check before you buy.
$1,199.00 · direct from Jackery
Last checked 1 day ago. Prices move — check before you buy.
Spec deltas
The DELTA 3 Ultra Plus doubles the Explorer 1500 Ultra on every spec that stores or delivers power, and charges 50% more for it. 3,072Wh against 1,536Wh. 3,600W continuous against 1,800W, 7,200W surge against 3,600W, 1,600W of rated solar input against 800W. Two boxes a full size class apart, at $1,599 and $1,199.
Twice the energy for half again the money is why the more expensive unit is the cheaper one per watt-hour: $0.49 against $0.65, and $0.12 per lifetime kilowatt-hour against $0.16. Both carry 4,000 cycles and five years of warranty, so nothing further down the spec sheet reorders that. On value the argument is settled by the second row of the table.
What keeps this interesting is the 35.7 lbs between them. 74.3 lbs is a two-hands, bent-knees lift you plan your day around; 38.6 lbs is one you carry to the beach and set down where you want it. Add the Explorer's IP65 ratingB1 and there is a genuine buyer here who should ignore the paragraph above entirely.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
Doubling the energy for half again the money is precisely why the larger unit is the cheaper one per watt-hour, $0.49 against $0.65. Both are rated 4,000 cycles, so that ranking survives the division into lifetime terms unchanged and lands at $0.12 per kilowatt-hour against $0.16. The extra $400 isn't a premium for a nicer box. It's the second 1,536Wh bought at a discount on the first.
DELTA 3 Ultra Plus: 3,072Wh, 3,600W output, 7,200W surge, 1,600W rated solar input, $1,599Explorer 1500 Ultra: 1,536Wh, 1,800W output, 3,600W surge, 800W rated solar input, $1,199Cost per watt-hour: $0.49 for the DELTA, $0.65 for the Explorer
Why it mattersIf you're choosing on sticker price you're reading the single number where the Jackery wins and skipping every number where it loses.
1,843Wh is more than the Explorer holds in total at 1,536Wh nameplate, so that same desk setup flattens the Jackery before the day ends, even though the modelled Remote Workday row shows it passing with 396Wh to spare. The scenario is priced for a laptop and a phone. A tower and two monitors is a different animal.
The Remote Workday scenario models 910Wh, which is 35% of the DELTA's 2,611Wh usable and 70% of the Explorer's 1,306WhA reviewer ran a full eight-hour remote day on the DELTA with a laptop, desktop workstation and monitors, and finished with 40% leftA5Explorer 1500 Ultra nameplate capacity: 1,536Wh
Why it mattersIf your remote work involves a desktop rather than a laptop, treat the Explorer's pass on that row as a modelling artifact and plan on staying plugged in.
weight
Pair the ratings with 38.6 lbs against 74.3 and the Explorer is the only one of these two you'd carry any distance and then leave outside. The DELTA's answer to weather is a roof, and at 74.3 lbs its answer to distance is not going far, which is perfectly fine for a unit that lives in a utility room and comes out four times a year.
74.3 lbs against 38.6 lbs, a difference of 35.7 lbsReviewers rate the Explorer IP65 for dust and low-pressure water jets, with a fully sealed cooling structureB1The DELTA's reviewed protection is a 0.2m drop rating and moisture resistance aimed at overnight dewA14
Why it mattersIf the unit works outdoors in real weather, buy the Jackery and size the job to 1,536Wh. If it works indoors, the weather rating is worth nothing to you and the capacity is worth everything.
solar input
So in a multi-day outage the DELTA's advantage isn't that it refills faster. It's that it gets through the first night at all. The Explorer covers 1,306Wh of the 1,645Wh that night asks for, about 79%, then stops and can't do anything about it until the sun comes back.
Rated solar input: 1,600W into the DELTA's 3,072Wh, 800W into the Explorer's 1,536WhThe 8-Hour Blackout load is 1,645Wh, against 2,611Wh usable for the DELTA and 1,306Wh for the ExplorerThe Explorer finishes that night 339Wh short; the DELTA finishes it with 966Wh left
Why it mattersBuying for grid outages settles it here: the Explorer is a 1,306Wh unit facing a 1,645Wh night, and no amount of solar changes that during the night itself.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: The capacity gap is the page: 3,072Wh against 1,536Wh, or 2,611Wh against 1,306Wh once the flat 85% derate is applied.
continuous output
The derate is where every scenario on this page is actually decided: 3,072Wh and 1,536Wh become 2,611Wh and 1,306Wh usable. Worth knowing what that 85% is. It's one flat constant applied to every unit in the catalogue, not a measurement taken from either of these two. A sensible haircut for conversion losses and the fact that nobody runs a battery to zero. Not a test result.
A clean 2:1 gap makes the sizing question unusually simple, so answer it in watt-hours before you answer it in dollars. Under 1,306Wh on your worst realistic night and the Explorer covers you, with the extra $400 buying headroom you will never touch. Between 1,306Wh and 2,611Wh and only one of these two finishes. Above 2,611Wh and neither of them is the answer.
Portability & Form Factor
Selected because: 74.3 lbs against 38.6 is the one axis the Explorer wins outright, and the only reason to overrule everything else.
weight
74.3 lbs is a two-hands, bent-knees, don't-take-the-stairs-alone lift. 38.6 lbs is a heavy suitcase you carry with one arm. That 35.7 lb difference is the only reason this page isn't a walkover, and it's a bigger deal than the spec table makes it look, because weight is the one spec you pay for every single time you use the thing. One reviewer called the DELTA's 74 pounds thunderous and meant it as a warningA9.
Jackery's own framing is that the Explorer is up to 53% lighter than comparable competitor unitsB2, which is a claim about units of similar capacity and therefore not a claim about this matchup. Against the DELTA it's 48% lighter, 38.6 lbs against 74.3, while holding half the energy. That's the honest version. You're not buying a lighter 3,072Wh unit. You're buying a 1,536Wh one.
Lifetime Value
Selected because: The DELTA costs $400 more and four cents less per lifetime kilowatt-hour, and it's worth showing why those aren't in tension.
cost / lifetime kWh
Both units are rated 4,000 cycles, which quietly turns the lifetime table into a reprint of the price table. Cost per lifetime kilowatt-hour is cost per watt-hour divided by cycle life, so with the cycle counts identical the per-watt-hour ranking survives the division intact and comes out $0.12 against $0.16. The table can't reorder these two. It can only restate them.
The same equality is why the years-of-service figures read identically for both units. They're built from cycle count and a usage cadence with no capacity term anywhere in them, so a 3,072Wh unit and a 1,536Wh unit print the same lifespan. True as arithmetic, useless for choosing. The four cents is the part of this table that means something.
Your Life, Your Pick
Selected because: The Explorer clears three of the six modelled loads and misses Weekend Camping by 794Wh and the 8-Hour Blackout by 339Wh, which is where an abstract capacity gap turns into a decision.
Three of the six modelled loads separate these units, and they separate the same way each time: the Explorer stops and the DELTA doesn't. Weekend Camping asks for 2,100Wh and the Explorer is 794Wh short. The 8-Hour Blackout asks for 1,645Wh and it's 339Wh short. Closer, and it makes no difference at all at 3 a.m.
One caution about how the rows are scored. The metric is share of usable capacity consumed, so on a light load it hands the win to whichever unit has more left over. That's why Tailgate Party goes to the DELTA on a 670Wh draw that neither unit strains. A true statement about reserve and a poor guide to a parking lot. Use these rows to find the loads that actually separate the two, and skip the ones where both coast.
Growth Path
Selected because: The DELTA takes expansion batteries on top of 3,072Wh; the Explorer is sealed at 1,536Wh, so it has to be the right size on day one.
solar input
Nothing on this page covers a 4,685Wh day, and only one of these two can be made to. Bolting an EcoFlow expansion battery onto a 3,072Wh base is a real path toward that number. The Explorer's 1,536Wh is the figure for the life of the unit, and no accessory changes it.
That isn't a knock on the Explorer. Being sealed only costs you if the capacity you bought turns out to be the wrong capacity, which is a sizing mistake rather than an expandability one. If 1,306Wh usable covers your worst night, the DELTA's growth path is a feature you're paying for and will never open.
Strengths & trade-offs
EcoFlow DELTA 3 Ultra Plus
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$400) than the Explorer 1500 Ultra.
- –Significantly heavier (+35.7 lbs), making it harder to move.
Jackery Explorer 1500 Ultra
Strengths
- +Costs $400 less
- +Lighter by 35.7 lb
Trade-offs
- –Weaker inverter (-1,800W) limits appliance compatibility.
- –Sealed capacity — the DELTA 3 Ultra Plus 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
DELTA 3 Ultra Plus
A weekend at 2,100Wh is where the size class starts to bite. The Explorer holds 1,306Wh usable, about 62% of the trip, and finishes 794Wh short. The DELTA covers it with 511Wh spare, which is a real margin but not a spare day. If you camp where the sun is unreliable, size for the whole trip rather than counting on the panels to bail you out mid-Saturday.
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 3 Ultra Plus
The night asks for 1,645Wh. The Explorer holds 1,306Wh usable, covers about 79% of it, and goes dark with roughly an hour and a half of the eight still to run. The DELTA covers the night and ends with 966Wh left, which deserves stating precisely rather than loosely: that's 59% of what a second identical night would need. One outage, comfortably. Two in a row with no sun between them, no.
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 cover this and it isn't close: 320Wh against 1,306Wh usable on the Explorer and 2,611Wh on the DELTA, which works out to four nights and eight nights respectively. Noise can't break the tie either, since both units are listed at the same 30 dBA. So break it on the two things that genuinely differ. $1,199 against $1,599, and 38.6 lbs against 74.3. For a CPAP and little else, the Explorer is the sane buy and the DELTA is 74.3 lbs of margin you'll never reach.
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 3 Ultra Plus
910Wh is 35% of the DELTA's usable capacity and 70% of the Explorer's, leaving 1,701Wh and 396Wh respectively at the end of the day. Both finish, so this row is about margin rather than survival. 396Wh is one long evening of overtime or one unplanned device. It is not a second day. If your desk runs heavier than a laptop and a monitor, that margin is the first thing to go.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
DELTA 3 Ultra Plus
670Wh is a light day for both: 26% of the DELTA's usable capacity against 51% of the Explorer's, so the DELTA takes the row on reserve. Reserve is the wrong thing to optimise on a load neither unit strains. What you'll actually notice is 74.3 lbs against 38.6 lbs, over however far from the gate you parked. The DELTA wins the metric. The Explorer wins the walk.
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
4,685Wh a day is out of reach for both, and not by remotely similar amounts. The DELTA covers 2,611Wh and misses by 2,074Wh, a gap larger than the Explorer's entire 1,536Wh nameplate. The Explorer covers 1,306Wh and misses by 3,379Wh, which is most of the day. Treat both as partial cover for the essentials on that list. If this really is your daily draw, a portable with a handle is the wrong shape of answer.
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 3 Ultra Plus runs 12.7h vs 6.4h.
$1,599 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 0–174.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–34.8hHigh-Draw Appliances
These reveal the real limitsscale 0–2.6h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
August 9, 2026
Verdict: the DELTA 3 Ultra Plus, on Power Score margin
Take the DELTA 3 Ultra Plus at $1,599 unless weight or weather decides it for you. It stores 3,072Wh against 1,536Wh, delivers 3,600W against 1,800W, and surges to 7,200W against 3,600W, each of those exactly double, for $400 more. Double the energy at half again the money means the bigger box is also the cheaper energy, and with both units rated 4,000 cycles nothing downstream reverses that. The Explorer's case is narrow and real: 38.6 lbs against 74.3, and reviewers rate it IP65 against dust and water jets while the DELTA's tested protection stops at a 0.2m drop and dew resistanceB1A14. If the unit lives in a closet and comes out for outages, buy the DELTA. If it lives in the back of a truck and gets carried, buy the Jackery and size your expectations to 1,536Wh.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of August 9, 2026. The links below open EcoFlow's and Jackery's current prices.
$1,599.00 · direct from EcoFlow
Last checked 1 day ago. Prices move — check before you buy.
or check the Explorer 1500 Ultra price$1,199.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated August 9, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): CPAP, 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 3 Ultra Plus rates 4.9/5 (92nd percentile of 26 Large-class units), and Explorer 1500 Ultra rates 3.5/5 (12th percentile of 27 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.
74.3 lbs: Fine Until There Are Stairs
74.3 lbs against the Explorer's 38.6 is the difference between positioning a unit and carrying one. On flat ground and a tailgate, one person manages it with both hands and bent knees. Basement stairs, a boat, or fifty yards of soft sand and you want help or a different unit. Decide this before you buy, because it's the one thing about this unit that never improves with a firmware update.
Sealed at 1,536Wh: a Size, Not a Flaw
The Explorer is a closed 1,536Wh box and the DELTA takes EcoFlow expansion batteries on top of 3,072Wh. Before pricing that as an advantage, notice that the DELTA already holds twice what the Explorer does before a single extra battery is added. Across most of the gap between these two, expansion is beside the point, because the base capacity already settled it. Expansion earns its keep only at the far end, past 3,072Wh, and that's a much smaller group of buyers than the card suggests.
10ms vs 20ms Switchover: Both Are Rated Ceilings
The DELTA is rated under 10ms to switch to battery, the Explorer under 20ms. Both are written as ceilings rather than stopwatch readings, so read the 10ms as no worse than 10 and not as a measured result. The distance between them is ten milliseconds. If you own equipment sensitive enough for that to decide anything, you already know exactly what it is, and it isn't the router, the desktop or the CPAP most people are asking about. File this as a tiebreaker, never as a reason.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The Explorer 1500 Ultra's figure is a maximum rather than a guarantee — it depends on registering the unit with Jackery, which is what extends the base term to the full period. Worth saying because the per-dollar framing can suggest otherwise: the Explorer 1500 Ultra works out at 4.2 years of cover per $1,000 spent against the DELTA 3 Ultra Plus's 3.1, but that spread is the price gap, not the terms.
Full record above — the Test Desk pick is the DELTA 3 Ultra Plus.
Check DELTA 3 Ultra Plus 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
The Explorer 1500 Ultra is cheaper to buy, but the DELTA 3 Ultra Plus is cheaper to own. At $0.13/kWh over its lifetime vs $0.2/kWh, the DELTA 3 Ultra Plus's higher cycle life and capacity make each dollar go further over the years. One thing to know reading the table: both carry the same 4,000-cycle rating, so the lifetime rows are sticker price and capacity in disguise — the wear horizon is identical and decides nothing here.
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
The broadest catalogue in portable power, and this is one of the units that can actually use it: expansion batteries and panels attach to the 3,072Wh base rather than forcing you to buy a second unit. EcoFlow also moves fastest on charging technology and app development of any brand here, which cuts both ways but mostly cuts in your favour.
Worth knowing
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
Distribution, and it matters more than it sounds. Jackery is the brand stocked by Costco, Home Depot, Best Buy and Amazon, so the retailer's return window is available as a backstop in a category where manufacturer support is the common weak point. Buy it somewhere with a counter you can walk into.
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
Neither brand's support record is a reason to pick it. Our assessment has EcoFlow's experiences running polarised, with smooth prepaid-label replacements for some buyers and long waits or refurbished units for others, while Jackery's draws consistent criticism for slow, scripted responses and strict receipt requirements on warranty claims. Both brand profiles land on the same practical advice: buy from a retailer with a real return policy and treat the manufacturer warranty as the backup plan. Where they genuinely diverge is software. EcoFlow's app rates 4.6 on iOS and 4.2 on Android; Jackery's sits between 2.3 and 3.3 across both platforms, split over multiple apps that want you logged in even when you're offline. For a unit you'll be checking during a blackout, that isn't a small thing.
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.
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 3 Ultra Plus starts at 3,072Wh 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 3 Ultra Plus
Field data on the DELTA 3 Ultra Plus is reviewer data, not owner data. What exists comes from professional testers working over days or weeks: quiet operation even under sustained loadA1A2A13, a shell and cabling that feel substantial rather than cheapA8, a 0.2m drop rating and moisture resistanceA14. None of it comes from anyone who has lived with the unit through a winter. There are no firmware complaints on the record either, which for a unit this new means nobody has had time to file one, not that none are coming.
Two specifics are worth more than the general praise. One tester noticed the unit consistently drops its 30A port first when you overload itA3, which matters if that port is feeding the thing you least want cut. Another reported that pulling the wall plug produced no dips or shut-offs on the connected gearA6. One small annoyance will follow you outdoors: in direct sun the display washes out badly enough that the reviewer had to cup a hand around it to read the statusA7. Reviewers came down positive on the value at this priceA11.
“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 Explorer 1500 Ultra
The Explorer 1500 Ultra's record is thinner still: four reviewer entries, no owner reports at all, and a launch recent enough that long-term data simply doesn't exist yetB1B3B4. Reviewers converge on the same three things. The IP65 dust and water-jet rating with a fully sealed cooling structureB1, a 1.5-hour AC rechargeB3, and the 4,000-cycle LFP pack with five years of cover, which together earned it a 9.1 out of 10B4.
Take that recharge figure as reported rather than verified. We hold no AC input rating for either unit, so there's nothing to check it against and no way to compare it with the DELTA. The IP65 rating is the claim that can actually change a purchase, and it's the one thing on this page the Explorer has that the DELTA demonstrably does notB1A14.
“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
- 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]
- 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
“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]
- A3
“One weird thing we noticed was the fact that the unit always seems to shut down the 30A port first when you overload the unit”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · unknown · [mixed]
- A5
“I was able to work remotely for an eight-hour day with 40% power left, which included running my laptop, desktop workstation and monitors”
postperspective.com — Review: EcoFlow Delta 3 Ultra Plus Portable Power Station · 2026-04 · [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]
- A7
“while facing the sun, I had to employ the classic "cup hands cover" maneuver to get a clear look at the screen status”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11 · [mixed]
- 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]
- 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]
- 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]
- 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]
- B2
“Weighs about 38 lbs, which Jackery claims is up to 53% lighter than comparable competitor units of similar capacity.”
protoolreviews.com / jackery.com — Explorer 1500 Ultra · 2026 · [positive]
- B3
“1.5-hour AC recharge via ChargeShield 2.0, with a 4,000-cycle LFP battery and a 5-year warranty.”
backuppowerhub.com / thesolarlab.com — Explorer 1500 Ultra review · 2026 · [positive]
- B4
“Reviewers score it 9.1/10; its three defining strengths are the IP65 certification, a 1.5-hour AC recharge, and the 4,000-cycle LFP battery with a 5-year warranty.”
thesolarlab.com / backuppowerhub.com — Explorer 1500 Ultra review · 2026 · [positive]
Research compiled August 9, 2026.
Who Should Buy Which
Buy the DELTA 3 Ultra Plus if you…
- →You're buying for outages. An eight-hour night on this model wants 1,645Wh and only one of these two has it, finishing with 966Wh still in the tank at sunrise.
- →Your desk has a tower and two monitors on it. A reviewer's real eight-hour workday pulled roughly 1,843Wh from this unit, 60% of 3,072WhA5, which is more than the Explorer holds in total.
- →The unit is going to live in one place: a utility room shelf, a garage, an RV bay. If you're not carrying it, 74.3 lbs costs you nothing and $0.49 per watt-hour is the only number left on the table.
- →Your load list is growing. A bigger array, a second fridge, a well pump. This is the one of the two that can take an expansion battery when that day comes.
Buy the Explorer 1500 Ultra if you…
- →You'll be carrying it. Beach, boat, jobsite, a campsite the car can't reach. 38.6 lbs goes places 74.3 lbs doesn't get invited.
- →It's going to get rained on. An IP65 rating against dust and water jetsB1 beats a unit whose reviewed protection stops at overnight dewA14, and no amount of capacity fixes weather.
- →Your real load is a CPAP, phones, a laptop and some lights. 320Wh a night against 1,306Wh usable is four nights unplugged, and the extra $400 buys reserve you'd never reach.
- →$1,199 is a hard ceiling and you'd rather own the right 1,536Wh unit outright than stretch for the bigger one.
If neither fits
Full-time van life, if that 4,685Wh-a-day model looks anything like your life. The DELTA misses it by 2,074Wh and the Explorer by 3,379Wh, and stacking expansion batteries onto a portable to chase a number like that is the expensive way to build a house battery. At that daily draw you want a fixed house bank with an inverter sized to the van and charging wired off the alternator, not a box with a handle on it.
The Bottom Line
Buy the DELTA 3 Ultra Plus. Twice the stored energy, twice the output, twice the surge and twice the rated solar input for half again the price isn't a close call on value, and with both units rated 4,000 cycles there's nothing downstream that can reverse it. It also happens to be the only one of the two that finishes an eight-hour blackout.
The exception is real and it's 35.7 lbs wide. If this unit gets carried, or gets rained on, the Explorer 1500 Ultra is the right box and 1,536Wh is what you're agreeing to live with. Everyone else: get the DELTA, put it somewhere it never has to move, and stop thinking about it.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the DELTA 3 Ultra Plus worth $400 more than the Explorer 1500 Ultra?
Yes, if you'll use the capacity. $1,599 against $1,199 buys exactly twice the energy (3,072Wh against 1,536Wh) and twice the output (3,600W against 1,800W), which is why the pricier unit is the cheaper one per watt-hour at $0.49 against $0.65. It stops being worth it the moment your real load fits inside the Explorer's 1,306Wh usable, or the moment you have to carry the thing more than a few yards.
Will the Jackery Explorer 1500 Ultra get me through an 8-hour power outage?
Probably not, on this site's load model. That scenario needs 1,645Wh and the Explorer has 1,306Wh usable after the flat 85% derate, leaving it 339Wh short at about 79% of the night. The DELTA 3 Ultra Plus covers the same night and ends with 966Wh spare. Worth being precise about that spare, though: it's 59% of what a second identical night would take, so don't plan on two outages back to back without sun in between.
How heavy is the DELTA 3 Ultra Plus, really?
74.3 lbs, and a reviewer who tested it called that thunderous. In practice it's a two-hands lift out of a trunk on flat ground and a two-person job on stairs. The Explorer 1500 Ultra is 38.6 lbs, 48% lighter, which is the difference between a unit you position once and a unit you take with you.
Can you add batteries to the Jackery Explorer 1500 Ultra?
No. It's sealed at 1,536Wh with no expansion path, while the DELTA 3 Ultra Plus accepts EcoFlow expansion batteries on top of its 3,072Wh. That only matters if you expect your needs to grow. If 1,536Wh covers your worst night today and nothing in your life is about to change, sealed costs you nothing.
Which one is better for running a CPAP overnight?
Either, so buy the cheaper one. A CPAP night here is 320Wh: the Explorer's 1,306Wh usable covers four of them and the DELTA's 2,611Wh covers eight, and both units are listed at the same 30 dBA, so noise can't break the tie. At $1,199 and 38.6 lbs against $1,599 and 74.3 lbs, the Jackery is the obvious CPAP buy unless something else on your list needs the capacity.
Brand matchup
EcoFlow vs Jackery: measured across every matchup →Where to buy
EcoFlow DELTA 3 Ultra PlusPick
$1,599.00
$1,599.00 · direct from EcoFlow
Last checked 1 day ago. Prices move — check before you buy.
Jackery Explorer 1500 Ultra
$1,199.00
$1,199.00 · direct from Jackery
Last checked 1 day ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.