Head-to-head test
EcoFlow DELTA 3 Max vs Jackery Explorer 1500 Ultra
Power and expansion headroom versus shoulder-carry weight and weatherproofing
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
EcoFlow
DELTA 3 Max
4,337Power Score · Appliance Class
$849.00 list · direct from EcoFlow
Jackery
Explorer 1500 Ultra
3,193Power Score · Appliance Class
$999.00 list · direct from Jackery
Spec deltas
The DELTA 3 Max wins this comparison on the numbers: a power score of 4405 against the Explorer 1500 Ultra's 3193, a lifetime cost of $0.10 per kWh against $0.16, and a genuine expansion path the Jackery doesn't have. None of that changes the fact that it weighs 50.7 lbs — 12.1 lbs more than the Jackery, and the heaviest unit in this entire lineup.
Jackery's case here isn't power — it's what that extra weight buys you instead. At about 38.6 lbs, it's light enough that Jackery markets it as up to 53% lighter than comparable competitor unitsB2, and its true IP65 sealed housing and cooling structureB1 mean it can sit exposed at a job site or beach without a cover, something the DELTA 3 Max doesn't advertise.
This is a buy-the-spec-sheet-versus-buy-the-shoulder decision. If your power needs might grow, or lifetime cost per kWh is the deciding number, the DELTA 3 Max is the buy. If you're the one hauling it in and out of a truck bed every weekend, or it lives somewhere wet, 12.1 lbs and a sealed housing are worth the $200 the Jackery costs.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
weight
EcoFlow's answer to needing more power is bolt on a battery; Jackery's answer is buy a second base unit, meaning today's 38.6 lbs is also tomorrow's ceiling.
DELTA 3 Max weighs 50.7 lbs versus 38.6 lbs for the Explorer 1500 Ultra — a 12.1 lb gapDELTA 3 Max supports EcoFlow expansion batteries (expandable) while the Explorer 1500 Ultra is a closed system (not expandable)
Why it mattersIf your power needs are fixed, the Jackery's lighter frame is a clean win. If they might grow, the DELTA 3 Max's extra 12.1 lbs comes with room to expand that the Jackery structurally can't offer.
cost / lifetime kWh
That $200 premium is a weight tax: you're paying more for a lighter, sealed unit, not a more powerful one.
DELTA 3 Max costs $799 with a lifetime cost of $0.10 per kWh across 8,192 total lifetime kWhExplorer 1500 Ultra costs $999 with a lifetime cost of $0.16 per kWh across 6,144 total lifetime kWh
Why it mattersJudge the Jackery on portability and durability, not on the spec sheet — on power math alone it loses to a cheaper competitor.
The 1500 Ultra is built for units that get carried and rained on, not for units that need to run the most gear the longest.
Reviewers note the Explorer 1500 Ultra is about 38 lbs, which Jackery markets as up to 53% lighter than comparable competitor unitsB2The Explorer 1500 Ultra carries a true IP65 dust and water-resistant rating with a sealed titanium-alloy cooling structureB1
Why it mattersA job site, a beach day, or anywhere the station sits exposed and gets picked up often is where the Jackery's design pays off despite trailing on power score and lifetime cost.
Capacity and switchover speed compound in an outage: more headroom and a faster handoff both matter at the exact moment neither unit can be swapped out.
In the 8-Hour Blackout scenario (1,645Wh needed), the DELTA 3 Max uses 94% of its capacity and can handle it, while the Explorer 1500 Ultra would need 126% and can'tThe DELTA 3 Max switches over in under 10ms versus under 20ms for the Explorer 1500 Ultra
Why it mattersFor blackout-driven buyers specifically, the DELTA 3 Max's power edge outweighs the Jackery's portability edge — this is the scenario where the frame flips back to EcoFlow.
The specific dimensions that decide these two units — everything else is a tie.
Portability & Form Factor
Selected because: Weight is the axis Jackery wins on, and it's the reason to read past the power score.
weight
At 50.7 lbs, the DELTA 3 Max is not a one-hand unit — it's a two-hands, bent-knees lift out of a trunk, and at 12.1 lbs heavier than the Explorer 1500 Ultra, that difference shows up every time you move it. The Explorer 1500 Ultra weighs about 38.6 lbs, light enough that Jackery markets it as up to 53% lighter than comparable competitor unitsB2, a claim that lines up with how it feels next to a 50-lb station.
The Explorer 1500 Ultra backs that up with a true IP65 dust and water-resistant rating and a sealed titanium-alloy cooling structureB1, built to sit outside at a job site or beach without a cover. The DELTA 3 Max doesn't advertise sealed housing, so if the unit lives somewhere exposed and gets picked up daily, the Jackery's design does something the power numbers alone can't capture.
PowerScore Breakdown
Selected because: Explains the underlying capacity and output gap driving lifetime cost and scenario coverage.
overall power score
DELTA 3 Max scores 4405 against the Explorer 1500 Ultra's 3193 — a gap that traces straight back to 2,048Wh of capacity and 2,400W of output versus 1,536Wh and 1,800W. Surge capacity tells the same story: 4,800W versus 3,600W, which matters the moment a fridge or AC compressor kicks on and briefly pulls 2-3x its rated draw.
Both units share the same 4,000-cycle LFP battery and 5-year warranty, so the power score gap isn't a durability story — it's a straightforward capacity-and-output story, and it's the number that drives everything downstream: lifetime cost per kWh and which scenarios each unit can actually cover.
Lifetime Value
Selected because: Shows the $200 Jackery premium buys weight savings, not cheaper power.
cost / lifetime kWh
The DELTA 3 Max costs $799 and delivers 8,192 lifetime kWh across its rated cycles, working out to $0.10 per kWh. The Explorer 1500 Ultra costs $999 — $200 more — for 6,144 lifetime kWh at $0.16 per kWh. You're paying more for less total energy delivered over the unit's life.
Neither unit's daily cost is dramatic on its own — 6 cents versus 7 cents a day on a weekend-use pattern — but the gap compounds over a 5-year warranty window into $160 versus $200 per warranty year. If lifetime cost per kWh is the deciding number, the DELTA 3 Max wins it outright; the Jackery's $200 premium is buying weight savings and sealing, not cheaper power.
Growth Path
Selected because: Expansion is the structural reason the DELTA 3 Max's extra weight pays off over time.
solar input
The DELTA 3 Max supports EcoFlow expansion batteries, so a capacity shortfall two years from now gets solved by adding a battery, not replacing the base unit. The Explorer 1500 Ultra is a closed system — what you buy is what you get, and outgrowing 1,536Wh means buying an entirely new station.
That difference has real dollar value if your power needs are still moving — more camping gear, longer trips, a partial home-backup project. If your needs are fixed and 1,536Wh covers you indefinitely, the closed system costs nothing extra; if there's any chance you'll want more, the DELTA 3 Max's expansion path is the cheaper long-term bet.
What the Specs Don't Tell You
Selected because: Surfaces the expansion, UPS speed, and warranty-value flags buyers should weigh alongside weight.
The Explorer 1500 Ultra's closed architecture is flagged here as a warning, not a footnote: no expansion path means a capacity upgrade is a full repurchase, not an add-on. It's the same fact driving the growth-path section, just framed as a risk rather than a feature.
Two other flags are informational rather than decisive. Switchover is under 10ms on the DELTA 3 Max versus under 20ms on the Explorer 1500 Ultra — both fast enough for most sensitive electronics, but the DELTA 3 Max has less margin for error. Both units carry identical 5-year warranties and 4,000-cycle ratings, so on paper the warranty comparison is a wash; the real difference is what $160 versus $200 per warranty year buys you underneath that identical coverage.
Strengths & trade-offs
EcoFlow DELTA 3 Max
Strengths
- +Costs $150 less
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Significantly heavier (+12.1 lbs), making it harder to move.
Jackery Explorer 1500 Ultra
Strengths
- +Lighter by 12.1 lb
Trade-offs
- –Weaker inverter (-600W) limits appliance compatibility.
- –Sealed capacity — the DELTA 3 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 unit covers a full camping weekend on one charge — 121% needed for the DELTA 3 Max, 161% for the Explorer 1500 Ultra — so plan on solar input or a mid-trip recharge regardless of which 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 3 Max
The DELTA 3 Max clears this at 94% of capacity; the Explorer 1500 Ultra would need 126% and can't complete it on one charge — this is the scenario where the extra 12.1 lbs earns its keep.
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 are wildly overqualified for CPAP. You're using 25% or less. Save your money and buy whichever is cheaper; the extra capacity is completely wasted on a 40W overnight load. Put the savings toward a second battery for multi-night 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
DELTA 3 Max
The DELTA 3 Max gives you a comfortable buffer at 52%. Enough to work late, join extra video calls, or charge a second device without worry. The Explorer 1500 Ultra at 70% works but leaves less room for the unexpected. For daily remote work, that peace of mind matters.
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 Max
Both handle game day, and the DELTA 3 Max does it with more in reserve — 38% used against 51%. 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
Both units fall well short of true van-life daily draw (269% and 359% of capacity needed), so this scenario calls for a larger class of unit or a dedicated solar/alternator charging setup, not either of these two.
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 3 Max runs 8.5h vs 6.4h.
$849 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 3 Max
DELTA 3 Max is cheaper to own ($0.10 vs $0.16 per lifetime kWh), scores higher on raw power (4405 vs 3193), and has an expansion path the Explorer 1500 Ultra structurally lacks — but it does all that carrying 12.1 more pounds, which is a real cost for buyers who move the unit constantly or leave it exposed to weather.
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.
$849.00 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 3 Max rates 4.4/5 (63rd 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.
Explorer 1500 Ultra: No Expansion Path
The Explorer 1500 Ultra is a closed system with no battery-expansion option, so outgrowing its 1,536Wh capacity means buying an entirely new unit. The DELTA 3 Max supports EcoFlow expansion batteries instead.
UPS Speed: line-interactive vs standby
The DELTA 3 Max switches over in under 10ms; the Explorer 1500 Ultra switches over in under 20ms. Both are fast enough for most sensitive electronics, but the DELTA 3 Max carries a slightly wider safety margin.
Full record above — the Test Desk pick is the DELTA 3 Max.
Check DELTA 3 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
The DELTA 3 Max wins on both sticker price and long-term value. At $0.1/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Brand trust
EcoFlow
Ecosystem
Largest portable power ecosystem — 12-15 models spanning DELTA Pro, DELTA 3, and RIVER 3, plus solar panels and smart home panels.
Support
US-based phone/email/chat support, though experiences are polarized between hassle-free prepaid-label replacements and long waits with refurbished units on some claims.
Community
Largest community in the category — Reddit's r/Ecoflow_community runs around 31K members alongside multiple Facebook groups and an official forum.
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
Fastest-charging X-Stream tech and the deepest expansion ecosystem, up to 180kWh modular scale with the DELTA Pro Ultra X.
Worth knowing
An October 2025 DELTA Max 2000 recall for overheating risk (6 incidents) and a briefly tested app subscription paywall are both worth knowing before buying.
Jackery
Ecosystem
12-15+ models across the Explorer portable line and HomePower home-backup series, plus the SolarSaga panel ecosystem.
Support
US-based support that's widely criticized for slow, scripted responses and strict receipt requirements on warranty claims; buying through Costco or Amazon is the safer path for returns.
Community
The smallest community among major brands — r/Jackery sits around 2,000 members, though YouTube coverage is solid given 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 of any brand in the category — the dependable, widely available choice.
Worth knowing
Slowest of the major brands to adopt LFP chemistry across its full lineup, and its app experience trails rivals with two separate confusing apps and mandatory login even offline.
Analyst note
EcoFlow's edge is technical depth and expansion — the bigger ecosystem, faster charging tech, and a modular growth path. Jackery's edge is brand trust and distribution — it's the name buyers already recognize on store shelves, even though its app and support lag the category.
Growth path
DELTA 3 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 3 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 3 Max
Owners who've stress-tested the DELTA 3 Max report it held up to truck-bed transport, storage in a roughly 105°F garage, and operation near freezing around 34°F without issue, and capacity stayed consistent between one-month and three-month tests within measurement errorA3. That's the kind of abuse a camping or blackout unit actually takes, not lab conditions.
Under moderate load it runs whisper-quiet at conversational distance, and the app adds a low-power quiet mode plus a custom charge-speed limit for anyone who wants it quieter stillA1. That app depth is a recurring draw — reviewers point to it as one of the main reasons people move into the EcoFlow ecosystem, well beyond what the on-device interface offersA2.
“Whisper-quiet under moderate load — essentially silent at conversational distance; the app adds a low-power quiet mode and a custom charge-speed limit if fan noise bothers you. Fans rise under heavy load but stay quieter than most competitors in the 2kWh class.”
Sources
backuppowerhub.com · thesolarlab.com · androidguys.com
Jackery Explorer 1500 Ultra
At roughly 38 lbs, the Explorer 1500 Ultra is light enough that Jackery markets it as up to 53% lighter than comparable competitor units — a claim that tracks with how it feels next to heavier 2kWh-class stationsB2.
That weight comes paired with a true IP65 dust and water-resistant rating and a sealed titanium-alloy cooling structure, protected against dust and resistant to low-pressure water jets, heavy rain, and splashesB1. It's a newer CES-2026 launch, so long-term owner data is thin, but early reviews score it 9.1/10, with the IP65 rating, a 1.5-hour AC recharge, and the 4,000-cycle LFP battery called out as its three defining strengthsB4.
“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
- Reviewers consistently praise practical quietness (with app-based quiet/charge-limit modes) and the EcoFlow app/ecosystem as differentiators. [DELTA 3 Max · 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
“Whisper-quiet under moderate load — essentially silent at conversational distance; the app adds a low-power quiet mode and a custom charge-speed limit if fan noise bothers you. Fans rise under heavy load but stay quieter than most competitors in the 2kWh class.”
backuppowerhub.com — EcoFlow DELTA 3 Max Review; thesolarlab.com — DELTA 3 Max Review · 2026 · [positive]
- A2
“The EcoFlow app is one of the main reasons people migrate to the ecosystem: deep control including a custom charge-speed limit and quiet mode, well beyond the on-device interface.”
androidguys.com / thesolarlab.com — EcoFlow DELTA 3 Max line · 2026 · [positive]
- A3
“Capacity stayed consistent between 1-month and 3-month tests (within measurement error). The unit survived truck-bed transport, storage in a ~105°F garage, and operation near freezing (~34°F) without issue.”
backuppowerhub.com — EcoFlow DELTA 3 Max Review (hands-on) · 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]
- 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 Max if you…
- →Buyers who want the lowest lifetime cost per kWh ($0.10 vs $0.16) and don't mind the extra weight for it.
- →Anyone whose power needs might grow — the expansion battery path avoids a full repurchase later.
- →Blackout-focused buyers: it's the unit that actually clears the 8-Hour Blackout scenario, at 94% of capacity.
Buy the Explorer 1500 Ultra if you…
- →Buyers who carry the unit daily and feel every pound — 12.1 lbs lighter matters on repeated lifts.
- →Job-site or beach use where the unit sits exposed; the IP65 rating and sealed cooling structure are protection the DELTA 3 Max doesn't advertise.
- →Buyers who've already decided 1,536Wh covers their needs indefinitely and don't need an expansion path.
If neither fits
Van Life Daily (4,685Wh needed) and Weekend Camping (2,100Wh needed) outrun both units on a single charge — the DELTA 3 Max would need 121-269% of capacity and the Explorer 1500 Ultra 161-359%, depending on the scenario. Buyers with that kind of daily draw should look at a larger-capacity class or plan on solar/alternator top-ups rather than either of these two.
The Bottom Line
The DELTA 3 Max wins on the numbers that compound over time — lower lifetime cost per kWh, a higher power score, and an expansion path the Explorer 1500 Ultra structurally can't match — but it does that carrying 12.1 more pounds.
If you lift this thing more than you plug it in, or it lives somewhere exposed, the Explorer 1500 Ultra's weight and IP65 sealing are worth the $200 premium; everyone else should buy the cheaper, more capable, heavier unit.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Which one is actually cheaper to own?
The DELTA 3 Max is cheaper both upfront ($799 vs $999) and over its lifetime ($0.10 per kWh vs $0.16 per kWh across the unit's rated cycles). The Explorer 1500 Ultra's higher cost buys a lighter, sealed unit, not more power for the money.
Is the weight difference actually noticeable?
Yes — 12.1 lbs on a unit already in the 40-50 lb range is the difference between a one-motion lift and a two-hands, bent-knees carry. Jackery markets the Explorer 1500 Ultra as up to 53% lighter than comparable competitor units, and at 38.6 lbs against the DELTA 3 Max's 50.7 lbs, that tracks.
Can I add more capacity later?
Only with the DELTA 3 Max. It supports EcoFlow expansion batteries, so a capacity shortfall gets solved by adding a battery rather than buying a new base unit; the Explorer 1500 Ultra is a closed system, and outgrowing its 1,536Wh means a full repurchase.
Which one handles a power outage better?
The DELTA 3 Max: in the 8-Hour Blackout scenario it covers the 1,645Wh need using 94% of its capacity, while the Explorer 1500 Ultra would need 126% and can't complete it on one charge. Its faster sub-10ms switchover also gives it a slight edge for sensitive electronics.
Does either one handle a full weekend of camping?
No — Weekend Camping's 2,100Wh need outstrips both units on a single charge (121% for the DELTA 3 Max, 161% for the Explorer 1500 Ultra). Either works fine for shorter trips or paired with solar input, but plan on a recharge for a genuine multi-day camping weekend.
Where to buy
EcoFlow DELTA 3 MaxPick
$849.00
$849.00 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.