Head-to-head test
EcoFlow DELTA 3 vs Jackery Explorer 1500 Ultra
The DELTA 3 wins the checkout screen by $480; the Explorer 1500 Ultra wins everywhere a plug actually gets used.
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
EcoFlow
DELTA 3
3,196Power Score · Appliance Class
$549.00 list · direct from EcoFlow
Jackery
Explorer 1500 Ultra
3,193Power Score · Appliance Class
$999.00 list · direct from Jackery
Spec deltas
The Jackery Explorer 1500 Ultra costs $999, exactly $480 more than the EcoFlow DELTA 3's $519, and it's still the cheaper unit to actually own. DELTA 3 is rated for 3000 cycles on 1024Wh; the Jackery is rated for 4000 cycles on 1536Wh, which adds up to twice the total lifetime energy for less than double the price. Do the division and the Jackery lands at $0.16 per lifetime kWh against DELTA 3's $0.17.
That flip shows up in the scenarios too. DELTA 3 doesn't win a single one outright: it comes up 40Wh short on a full Remote Workday (910Wh needed, 870Wh usable), while the Jackery clears the same day with 396Wh left over. Both also fall short together on the bigger loads - Weekend Camping, an 8-Hour Blackout, and Van Life Daily all exceed what either unit can supply alone, so this isn't a home-backup shootout.
None of that makes the DELTA 3 a bad buy. It's $480 cheaper, it's the only one of the two with an actual expansion path, and its UPS switchover is twice as fast on paper. Those are real reasons to pick it - just not reasons that beat the Jackery's lifetime math for most buyers.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
rated cycles
Price it against lifetime kWh instead of the sticker and the DELTA 3 comes out to $0.17 per lifetime kWh, the Jackery to $0.16 - a cent lower despite costing $480 more to buy.
DELTA 3 costs $519, Explorer 1500 Ultra costs $999 - a $480 gapDELTA 3 is rated for 3000 cycles at 1024Wh (3072 lifetime kWh); Explorer 1500 Ultra is rated for 4000 cycles at 1536Wh (6144 lifetime kWh)
Why it mattersA buyer who'll actually cycle this battery for years, not just the odd weekend, should ignore the checkout total and buy the Jackery.
weight
Jackery's 'lighter' pitch compares itself to its own weight class; it says nothing about the DELTA 3, which simply weighs less, full stop.
Jackery markets the Explorer 1500 Ultra's 38.6 lb as up to 53% lighter than comparable-capacity rivalsB2DELTA 3 weighs 27 lb
Why it mattersSomeone optimizing for what actually goes over a tailgate or into a pack should compare pounds directly, not marketing percentages, and the DELTA 3 wins that comparison outright.
That's the difference between a unit you're watching the percentage bar on all afternoon and one you don't think about.
Remote Workday needs 910Wh across a laptop, monitor, router, and phone charger over 8 hoursDELTA 3's usable capacity tops out at 870Wh (85% of its 1024Wh rating)Explorer 1500 Ultra finishes the same workday using 70% of its usable capacity, with 396Wh still in reserve
Why it mattersAnyone using this to actually work remotely, not just camp, should size for the workday the Jackery covers, not the one the DELTA 3 almost covers.
Both are fast enough that a fridge compressor won't skip a cycle, but for a CPAP machine or networking gear where a few extra milliseconds actually matter, the DELTA 3 has the better number on paper - even if the field confirmation of it leans on a sibling model rather than this exact unitA2.
DELTA 3 switches over from grid to battery in 10ms; Explorer 1500 Ultra is rated at 20msthe DELTA 3's 10ms handoff is reported to work as advertised, though the field data comes from the closely related DELTA 3 Plus, which shares the spec, rather than the base DELTA 3 itselfA2
Why it mattersIf sub-second dropout tolerance is the actual worry, that one spec is a real point in the cheaper unit's favor despite everything else favoring the Jackery.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: the cheap-upfront-vs-cheap-to-own tension is the whole ballgame here
cost / lifetime kWh
$519 versus $999 looks like the whole decision until you follow the batteries to the end of their lives. DELTA 3 is rated for 3000 cycles on 1024Wh; Explorer 1500 Ultra is rated for 4000 cycles on 1536Wh. Multiply it out and the Jackery delivers 6144Wh of total lifetime energy against DELTA 3's 3072Wh - exactly twice as much for $480 more, not twice the price.
Divide price by lifetime energy and DELTA 3 lands at $0.17 per kWh, Jackery at $0.16. A penny doesn't sound like news, but it inverts the pitch: the box that costs less today is not the box that costs less to run. On daily use, that plays out over roughly 8.2 years for the DELTA 3 and 11 for the Jackery before cycle count runs out - the part of this comparison a sticker price can't tell you.
Your Life, Your Pick
Selected because: DELTA 3 loses every scenario it doesn't tie, and the miss on Remote Workday is the sharpest data point on the page
DELTA 3 doesn't win a single scenario outright, and the reason is specific, not general: Remote Workday needs 910Wh, DELTA 3's usable capacity tops out at 870Wh, and it simply runs dry with the day unfinished. The Jackery uses 70% of its usable capacity for the same eight hours and finishes with 396Wh still on the shelf.
Zoom out to the bigger loads and both units come up short together: Weekend Camping needs 2,100Wh, an 8-Hour Blackout needs 1,645Wh, a full day of van life needs 4,685Wh - DELTA 3 and Jackery both fall short of all three, no exceptions. This isn't a home-backup shootout. It's a shootout for the CPAP, the tailgate, and the workday-off-grid crowd, and in that lane the Jackery clears every bar the DELTA 3 doesn't.
Growth Path
Selected because: expansion is the DELTA 3's strongest counter-argument to the Jackery's lifetime-cost edge
solar input
DELTA 3's one real trump card is that it isn't finished when you buy it. EcoFlow sells expansion batteries that bolt onto the base unit, so a buyer whose trips get longer or whose gear list grows adds capacity instead of replacing the whole station. Jackery ships the Explorer 1500 Ultra as a sealed system: the 1536Wh you buy is the 1536Wh you'll have in five years.
That only matters if your needs are actually still moving. For most buyers they aren't - they buy for the trip or the outage they already know they'll have. But if you bought a smaller station two years ago and are already shopping for a bigger one, the DELTA 3's expansion path is worth more than the extra cent per lifetime kWh the Jackery saves you.
What the Specs Don't Tell You
Selected because: UPS speed, warranty parity, and cycle life in real years are all directly decision-relevant here
rated cycles
Four flags fire on this pair, and none of them are alarming - they're the fine print worth reading once. DELTA 3 switches over twice as fast (10ms versus 20ms), both carry the same 5-year warranty despite the $480 price gap, and the cycle-count difference plays out over real years, not just watt-hour math. The expansion flag is the only one with teeth: it's the one structural difference a spec sheet resolves in an instant and a five-year ownership period resolves very differently.
Portability & Form Factor
Selected because: the weight numbers contradict Jackery's own marketing claim, worth surfacing plainly
weight
Jackery calls the Explorer 1500 Ultra's 38.6 lb 'up to 53% lighter than comparable-capacity units'B2, and that's a defensible claim - measured against its own weight class of rugged 1500Wh-plus stations, it's a genuinely lighter box. It just isn't lighter than the DELTA 3 sitting across the table from it, which weighs 27 lb - 11.6 lb less, in absolute terms, no percentage qualifier required.
That's not a knock on the marketing; it's an artifact of comparing within a weight class rather than across capacities. A shopper who cares about what actually goes over a tailgate, not what wins a spec-sheet argument against other Jackerys, should compare the two numbers directly: 27 lb beats 38.6 lb regardless of what either brand claims about its neighbors.
Strengths & trade-offs
EcoFlow DELTA 3
Strengths
- +Costs $450 less
- +Lighter by 11.6 lb
Trade-offs
- –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
- +Larger battery capacity
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$450) than the DELTA 3.
- –Significantly heavier (+11.6 lbs), making it harder to move.
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 unit clears two nights of lights, a fan, and a CPAP machine on its own. Both come up well short, so treat this as a job for a bigger station, added solar, or a second battery - not a reason to prefer one of these two over the other.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
Neither unit
Neither unit can fully handle this scenario (needs 1,645Wh). You'd need a higher-capacity station or to cut back on usage.
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
Explorer 1500 Ultra
Both units are absurdly oversized for a 40W CPAP running eight hours - DELTA 3 uses a little over a third of its usable capacity, Jackery a quarter. If CPAP is the only job, buy on price, not capacity, and put the savings toward a second battery for longer trips.
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
Explorer 1500 Ultra
This is where the capacity gap actually shows up. The DELTA 3 comes up just short of a full eight-hour workday of laptop, monitor, and router; the Jackery finishes with a comfortable buffer still in reserve. If you work off-grid regularly, this scenario should carry more weight than the sticker price.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
Explorer 1500 Ultra
Both handle game day, and the Explorer 1500 Ultra does it with more in reserve — 51% used against 77%. Tailgating is a light load, so that headroom counts for less here than the 12 lbs you'll actually carry across the parking lot.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Neither unit
Neither unit can fully handle this scenario (needs 4,685Wh). You'd need a higher-capacity station or to cut back on usage.
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: Explorer 1500 Ultra runs 6.4h vs 4.2h.
$999 list · direct from Jackery
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–87hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–17.4hHigh-Draw Appliances
These reveal the real limitsscale 0–1.3h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
July 14, 2026
Verdict: the Jackery Explorer 1500 Ultra
Take the Explorer 1500 Ultra unless your power needs are genuinely still growing. It's the only one of the two that clears the Remote Workday test (910Wh needed, DELTA 3 tops out at 870Wh usable and comes up short), it wins CPAP Overnight and Tailgate Party too, and despite costing $480 more at checkout it comes out slightly cheaper per lifetime kWh ($0.16 versus $0.17) once you count its extra 1,000 cycles and 512Wh of capacity. The DELTA 3's real counter-argument is expansion: it's the only one of the two you can grow instead of replace, and it's $480 cheaper today. If that flexibility matters to you specifically, that's reason enough to take it instead.
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.
$999.00 list · direct from Jackery
or check the DELTA 3 price$549.00 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
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews — see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, DELTA 3 rates 4.3/5 (61st percentile of 24 Everyday-class units), and 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.
The Ceiling You Buy Is the Ceiling You Keep
The Explorer 1500 Ultra is a sealed system: 1536Wh today is 1536Wh in five years. The DELTA 3 supports EcoFlow's expansion batteries, so a buyer whose needs grow adds capacity instead of buying a second station. Most buyers never hit that ceiling - but if you already suspect you will, this is the one line item that should override the lifetime-cost math elsewhere on this page.
Both Switch Fast, One Switches Faster
The DELTA 3 hands over from grid to battery in 10 milliseconds; the Explorer 1500 Ultra is rated at 20. Both are quick enough that a fridge compressor won't miss a beat, but for equipment that's genuinely sensitive to a dropout - a CPAP machine, networking gear - the DELTA 3 has the better number on paper.
Same Coverage, Different Bill
Both units carry a 5-year warranty. The DELTA 3 costs $519 for that coverage window, the Explorer 1500 Ultra $999 - so the Jackery isn't buying more years of protection, it's buying more capacity and cycle life within the same window.
3000 Cycles vs 4000, in Actual Years
On daily use, the DELTA 3's 3000-cycle rating works out to roughly 8.2 years before capacity fade sets in; the Explorer 1500 Ultra's 4000-cycle rating stretches to about 11. Weekend-only users won't feel this difference for decades - it matters most for anyone cycling the battery every day.
Full record above — the Test Desk pick is the Explorer 1500 Ultra.
Check Explorer 1500 Ultra price →or check the DELTA 3 priceOwnership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
The DELTA 3 is cheaper to buy, but the Explorer 1500 Ultra is cheaper to own. At $0.16/kWh over its lifetime vs $0.18/kWh, the Explorer 1500 Ultra's higher cycle life and capacity make each dollar go further over the years.
Brand trust
EcoFlow
Ecosystem
Largest in portable power — 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels
Support
US-based phone/email/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 3
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,024Wh.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
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
Don't read the DELTA 3's expandability as a straight win here: it starts at 1,024Wh, below the Explorer 1500 Ultra's 1,536Wh, so a first expansion battery largely buys back capacity the Explorer 1500 Ultra already includes. It only pulls ahead if you'd grow past 1,536Wh — short of that, the Explorer 1500 Ultra's larger fixed capacity is the simpler value.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3
Field data on the standard DELTA 3 itself is limited - most published testing so far covers the Plus, Max, and Ultra siblings in the line, so treat what follows as directional rather than exhaustive. What's there reads well: at loads under 200W the fans reportedly stay off entirely, and even climbing to 500-800W they're barely audible from three feet awayA1. The 10ms UPS switchover is reported to work as advertised too, fast enough that routers don't reboot and CPAP therapy doesn't skip a breath, but that observation comes from the closely related DELTA 3 Plus, which shares the same spec, not from the base DELTA 3 tested independentlyA2. Take it as a good sign, not a confirmed one.
“At low loads (under 200W) the fans often stay completely off, making the Delta 3 effectively silent; under moderate load (500–800W) the fans are barely audible from three feet away.”
Sources
portablepowernerd.com · thesolarlab.com · outputreport.com
Jackery Explorer 1500 Ultra
Jackery pitches the Explorer 1500 Ultra's 38.6 lb as up to 53% lighter than comparable-capacity competitorsB2 - a claim that's true within its own weight class and beside the point in this specific matchup, since the DELTA 3 across the table is a smaller-capacity unit that's simply lighter in absolute pounds. Beyond the marketing math, reviewers land on real strengths: a 9.1-out-of-10 aggregate score built on IP65 sealing against dust and water, a 1.5-hour AC recharge, and the 4000-cycle LFP pack behind the 5-year warrantyB1B3B4. It's a CES-2026 launch, so this is early review sentiment, not years of ownership mileage - worth noting given how new the unit is.
“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
- 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
“At low loads (under 200W) the fans often stay completely off, making the Delta 3 effectively silent; under moderate load (500–800W) the fans are barely audible from three feet away.”
portablepowernerd.com — EcoFlow Delta 3 Tested: 2026 Hands-On Review; thesolarlab.com · 2026 · [positive]
- A2
“UPS switchover works as advertised — a power cut results in a ~10ms handoff, fast enough that routers don't reset, fridges don't skip a compressor cycle, and CPAP machines don't interrupt therapy.”
outputreport.com / thesolarlab.com — DELTA 3 line UPS testing (observed on DELTA 3 Plus, which shares the 10ms UPS spec) · 2026 · [positive]
- 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 July 14, 2026.
Who Should Buy Which
Buy the DELTA 3 if you…
- →You want to spend $480 less today and don't mind a smaller battery for now.
- →Your power needs might grow - more gear, longer trips, maybe partial home backup - and you'd rather add capacity later than replace the whole unit.
- →You're loading this in and out of a trunk or a pack regularly and want the genuinely lighter box: 27 lb versus 38.6 lb.
- →You run CPAP or networking gear where a faster UPS switchover (10ms versus 20ms) is worth having on paper, even with thin field data on this exact modelA2.
Buy the Explorer 1500 Ultra if you…
- →You want a full off-grid workday - laptop, monitor, router - without watching a percentage bar; the DELTA 3 comes up short on this exact load.
- →You're optimizing for lifetime cost, not checkout price: $0.16 per lifetime kWh against the DELTA 3's $0.17.
- →You want the toughness rating on the spec sheet - IP65 dust and water resistanceB1 - for use somewhere genuinely dirty or wet.
- →You're fine buying once and never expanding; a sealed 1536Wh unit is plenty for what you need.
If neither fits
If you need to run a fridge and lights through an actual overnight outage (1,645Wh), stock a weekend campsite (2,100Wh), or power a van for a full day (4,685Wh), skip both - neither clears any of those loads, and you should be shopping 2,000Wh-plus stations or pairing either of these with solar and a second battery instead.
The Bottom Line
The Explorer 1500 Ultra costs $480 more at checkout and ends up the cheaper unit anyway - $0.16 per lifetime kWh against the DELTA 3's $0.17 - while also being the only one of the two that actually finishes a full off-grid workday without running dry.
Take the DELTA 3 only if you know your power needs are still growing and want to buy into that later instead of replacing the whole unit. Otherwise the Jackery's lifetime math and scenario coverage make it the one to buy.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 3 or the Jackery Explorer 1500 Ultra cheaper to own long-term?
The Jackery, despite costing $480 more upfront. Its 4000-cycle rating and 1536Wh capacity work out to 6144Wh of total lifetime energy against the DELTA 3's 3072Wh, which prices out to $0.16 per lifetime kWh for the Jackery versus $0.17 for the DELTA 3. The DELTA 3 still wins on cash out the door - it just loses the multi-year math.
Can either power a CPAP machine overnight?
Yes, easily - both are wildly oversized for a 40W CPAP running 8 hours (320Wh needed). DELTA 3 uses 37% of its usable capacity, Jackery 25%. If CPAP is the only job, the extra capacity in either unit goes mostly unused, so this scenario alone doesn't justify paying more for either one.
Which one can I expand later?
Only the DELTA 3. EcoFlow sells expansion batteries that add capacity to the base unit; the Explorer 1500 Ultra is a sealed system, so 1536Wh is what you'll have permanently. If your power needs are still growing, that's the DELTA 3's strongest argument despite its smaller starting capacity.
Which power station is actually lighter?
The DELTA 3, by 11.6 lb - 27 lb versus 38.6 lb. Jackery markets the Explorer 1500 Ultra as up to 53% lighter than comparable-capacity rivals, which is true against other big rugged units but not against a smaller-capacity unit like the DELTA 3 sitting next to it here.
Can either handle a weekend camping trip or a multi-day blackout?
No. A two-night camping trip needs about 2,100Wh and an 8-hour blackout needs 1,645Wh; the DELTA 3 and Jackery both fall short of both loads on their own. For either scenario, look at a larger station or plan to pair one of these with solar input and a backup battery.
Where to buy
EcoFlow DELTA 3
$549.00
$549.00 list · direct from EcoFlow
Jackery Explorer 1500 UltraPick
$999.00
$999.00 list · direct from Jackery
Prices may vary by retailer and are subject to change.