Head-to-head test
EcoFlow DELTA 3 vs Jackery Explorer 2000 v2
The Jackery hands you 2,042Wh today; the DELTA 3 hands you 1,024Wh for $280 less and the wiring to grow past it later — so pick based on whether you need the second kilowatt-hour now or want to build up to it.
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 2000 v2
3,999Power Score · Appliance Class
$799.00 list · direct from Jackery
Spec deltas
These aren't the same size, and that's the whole comparison. The Jackery Explorer 2000 v2 holds 2,042Wh; the EcoFlow DELTA 3 holds 1,024Wh, half as much, for $280 less. Sort them by price and you'll think you're cross-shopping. You're actually looking at a 2kWh unit and a 1kWh unit that happen to share a product page.
The Jackery is the bigger unit in every capacity sense: double the watt-hours, cheaper per watt-hour at $.39 to the DELTA 3's $.51, and light for its class at 39.5 pounds. It clears an 8-hour blackout and a remote workday the smaller DELTA 3 can't touch. If you need roughly 2kWh of backup and you need it out of the box, this is the shorter conversation.
The DELTA 3's answer isn't capacity, it's flexibility. It's $280 cheaper, twelve pounds lighter, expandable past the Jackery's fixed ceiling when you're ready, and it carries the better app, a faster 10ms UPS, and more solar input. The Jackery is a sealed 2kWh box; the DELTA 3 is a 1kWh starter you grow into. Which is smarter depends entirely on whether your loads already need the second kilowatt-hour.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
Even the 910Wh workday, which the DELTA 3 meets on paper at 105% of capacity, tips over once you count the roughly 85% you actually get after inverter losses. So the two scenarios most people buy backup for are exactly the two the smaller unit can't finish, and the Jackery can.
Jackery holds 2,042Wh; the DELTA 3 holds 1,024WhThe 8-Hour Blackout needs 1,645Wh and the Remote Workday needs 910WhDELTA 3 output is 1,800W vs Jackery's 2,200W
Why it mattersIf your reason for buying is 'ride out an outage' or 'run a full workstation off-grid,' the capacity gap settles it for the Jackery.
Capacity
That reframes the price gap: the $519 DELTA 3 is a foundation you extend on your own timeline, and once you do you own the newer battery and a faster UPS, while the $799 Jackery is the ceiling the day you buy it. The catch is honest — the expansion battery is a separate purchase, so out of the box you're still choosing 1,024Wh over 2,042Wh.
The DELTA 3 accepts EcoFlow expansion batteries; the Explorer 2000 v2 is a closed systemThe DELTA 3 base is 1,024Wh; the Jackery is fixed at 2,042WhThe DELTA 3 costs $519 vs the Jackery's $799
Why it mattersIf you expect your needs to grow, the DELTA 3 is the platform; if you need the 2kWh now and won't tinker, the sealed Jackery is simpler.
solar input
For an off-grid setup the Jackery's low solar-to-capacity ratio is a real mismatch. The big tank takes a long solar day to fill, and its 20ms standby UPS, while fine for most gear, sits a step behind the DELTA 3's 10ms line-interactive handoff for sensitive electronics.
Jackery accepts 400W of solar into 2,042Wh; the DELTA 3 accepts 500W into 1,024WhThe DELTA 3 switches over in 10ms (line-interactive) vs the Jackery's 20ms (standby)
Why it mattersOff-grid and solar-first buyers should weigh the DELTA 3's faster refill and quicker UPS against the Jackery's raw capacity — the bigger battery isn't automatically the better solar unit.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: The capacity gap decides the blackout and workday rows, which is the core of the verdict.
The DELTA 3 covers the light half of life cleanly — a 320Wh CPAP night, a 670Wh tailgate — and then hits a wall exactly where backup buyers care most. An 8-hour blackout wants 1,645Wh and the DELTA 3 holds 1,024Wh; a remote workday wants 910Wh and the DELTA 3 meets it only until you subtract the roughly 15% you lose to the inverter. The Jackery's 2,042Wh clears both without drama.
Neither, though, does a full weekend camp (2,100Wh) or a van-life day (4,685Wh). The Jackery gets closer, but 'closer to not enough' isn't a buying reason. If those are your scenarios, both of these are undersized and you should be looking at a 3kWh-plus unit.
Growth Path
Selected because: Expandable DELTA 3 vs the Jackery's closed box; the fired expansion warning lives here.
solar input
This is the DELTA 3's best card and the Jackery's flagged weakness: the DELTA 3 takes EcoFlow expansion batteries, the Explorer 2000 v2 doesn't. The Jackery is 2,042Wh forever — a sealed box, which is simple and predictable, but a dead end the day your needs pass it.
The DELTA 3 starts smaller and grows past it, and because it's the newer platform, what you grow into is a modern LFP stack with a faster UPS and the better app. The honest asterisk: expansion costs money, so buying the DELTA 3 to 'match' the Jackery means a second purchase. But if growth is likely, one of these can follow you and the other can't.
Lifetime Value
Selected because: Jackery cheaper per Wh vs DELTA 3 cheaper per warranty-year; the honest value catch.
cost / lifetime kWh
The Jackery is the cheaper energy on paper — $.39 per watt-hour to the DELTA 3's $.51, and $0.10 per lifetime kilowatt-hour to $0.17 — because you're spreading $799 across twice the capacity and 4,000 cycles. Those are real advantages if you'll use the capacity.
But the lifetime figures assume eleven years of daily cycling, and inside the 5-year warranty you can actually bank on, the math narrows: the DELTA 3 costs $104 a year to the Jackery's $160. You're not wrong that the Jackery is cheaper per watt-hour; you're just buying more watt-hours to get there. If you don't need them, the cheaper sticker doesn't help you.
Brand Trust
Selected because: Cross-brand pair; EcoFlow's app/ecosystem vs Jackery's ubiquity and weak app is a real discriminator.
EcoFlow and Jackery pull in opposite directions here. EcoFlow runs the deepest ecosystem in portable power and the strongest app in the class — a genuine reason people stay — with X-Stream fast charging and the most active innovation cadence. The asterisks are an unrelated DELTA-series recall in October 2025 and a brief 2025 flirtation with paywalling app features that community pushback shelved.
Jackery is the Toyota of the category: the widest retail availability and the highest name recognition, proven and dependable. But its app is the weakest of the majors at 2.3 to 3.3 stars, the community is small, and support draws consistent criticism. If app control and ecosystem matter to you, that's a lasting gap. If you just want a reliable box from a brand you can return to Costco, Jackery's ubiquity is its own kind of insurance.
Strengths & trade-offs
EcoFlow DELTA 3
Strengths
- +Costs $250 less
- +Lighter by 12.5 lb
- +Faster solar charging
Trade-offs
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Explorer 2000 v2's 4,000, so it wears out sooner.
Jackery Explorer 2000 v2
Strengths
- +Larger battery capacity
- +Higher AC output
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$250) than the DELTA 3.
- –Significantly heavier (+12.5 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 finishes a two-day camp's roughly 2,100Wh — the Jackery lands closest at 2,042Wh but still short, and the DELTA 3 is half of it. This row is a tie in the sense that both need a solar top-up; if a full off-grid weekend is the goal, size up.
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
Explorer 2000 v2
The Jackery's row to win. Eight hours of fridge and lights runs about 1,645Wh — past the DELTA 3's 1,024Wh, comfortably inside the Jackery's 2,042Wh. If backup is the job, this is the outcome that matters most.
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 2000 v2
Both are massively overpowered for CPAP — the Explorer 2000 v2 finishes at 18% used against the DELTA 3's 37%. At a 40W load that reserve is comfort rather than necessity, so if a CPAP is the only thing you plan to run, price and portability should count for more than capacity does.
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 2000 v2
The Jackery clears a 910Wh workday; the DELTA 3 meets it only on paper. At 105% of the base unit's capacity, the workday tips over once you subtract inverter losses, so the smaller unit can't quite hold a full day of laptop, monitor, and peripherals.
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 2000 v2
Both handle game day, and the Explorer 2000 v2 does it with more in reserve — 39% 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 2000 v2 runs 8.5h vs 4.2h.
$799 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 0–115.7hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–23.1hHigh-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 16, 2026
Verdict: the Explorer 2000 v2, on Power Score margin
Buy the Jackery Explorer 2000 v2 if you need about 2kWh now. It delivers 2,042Wh for $799 at a better $.39 per watt-hour, with six months of field testing behind its reliability, and it clears the 1,645Wh blackout and 910Wh workday the DELTA 3 fails out of the box. But this is a genuine split: if your loads fit inside 1,024Wh, the DELTA 3 is $280 cheaper, lighter, expandable past the Jackery later, and carries a far better app and a faster UPS. The Jackery wins on capacity-today; the DELTA 3 wins on everything capacity doesn't cover.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 16, 2026. The links below open EcoFlow's and Jackery's current prices.
$799.00 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 16, 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 2000 v2 rates 3.6/5 (17th percentile of 25 Large-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 closed box is the Jackery
The Explorer 2000 v2 is fixed at 2,042Wh — no expansion battery, no growing it. That's fine if 2kWh is your ceiling, but the DELTA 3 next to it can bolt on capacity and pass the Jackery later, so the sealed unit is the one that can't follow a growing setup.
10ms line-interactive vs 20ms standby
The DELTA 3 switches over in about 10ms, the Jackery in about 20ms. Both are quick enough that most gear never notices, but the DELTA 3's line-interactive handoff has a little more margin for sensitive electronics like a desktop mid-save.
Cheaper per year is the DELTA 3
Across the shared 5-year warranty, the DELTA 3 costs $104 a year to the Jackery's $160. The Jackery wins cost-per-watt-hour because it holds more energy; within the window you can bank on, the smaller unit is the cheaper one to own.
Both last decades
3,000 cycles on the DELTA 3, 4,000 on the Jackery — at weekend use that's decades either way. The extra 1,000 cycles are real but sit past any horizon a buyer reaches, so this isn't the row to decide on.
Full record above — the Test Desk pick is the Explorer 2000 v2.
Check Explorer 2000 v2 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 2000 v2 is cheaper to own. At $0.1/kWh over its lifetime vs $0.18/kWh, the Explorer 2000 v2'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
The deepest ecosystem in portable power and the strongest app in the class, with X-Stream fast charging and the most active innovation cadence.
Worth knowing
An unrelated DELTA-series recall in October 2025 and a since-shelved 2025 attempt to paywall app features are worth knowing, though neither touches this unit's core reliability.
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
The widest retail availability and highest name recognition in the category — the dependable, return-it-to-Costco choice.
Worth knowing
The app is the weakest of the majors and support draws consistent criticism, so lean on a retailer's return window rather than the warranty channel.
Analyst note
EcoFlow is the ecosystem-and-innovation brand; Jackery is the ubiquity-and-recognition brand. If app control and an upgrade path matter, EcoFlow leads. If you want a proven box you can return anywhere, Jackery's reach is the safety net.
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 2000 v2
FIXED CAPACITYFixed at 2,042Wh — a sealed, complete system. No expansion port, but that capacity already covers heavy and multi-day loads.
Accepts up to 400W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
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 2000 v2's 2,042Wh, so a first expansion battery largely buys back capacity the Explorer 2000 v2 already includes. It only pulls ahead if you'd grow past 2,042Wh — short of that, the Explorer 2000 v2'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
The DELTA 3's 10ms UPS handoff is the field-tested standout for backup duty: a grid cut hands over fast enough that routers don't reboot and a fridge doesn't skip a compressor cycleA2. That measurement comes from the Plus sibling that shares the 10ms spec, so treat it as very likely rather than nailed down for the base unit.
On noise, the standard DELTA 3 runs effectively silent under 200W with the fans often fully off, and stays barely audible from three feet at 500 to 800WA1. Field data on the base model specifically is still thin — most testing covers the Plus and Max — so its sentiment is early but consistent.
“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 2000 v2
The Explorer 2000 v2's headline in the field is portability: right under 40 pounds, noticeably lighter than many 2kWh stations, with a flip-up handle that makes it easy to move car-to-garage and stashB1. One reviewer ran it over six months across camping trips and as office backup for a laptop, monitor, and Starlink, then rode out a multi-hour simulated outage on a fridge, lights, and a laptop with no noticeable voltage dropsB4.
Noise is a mild caveat handled well: it's louder than the advertised sub-30dB during normal charging, but the app's Silent mode drops it to about 30dB at the cost of charge speed, which reviewers call ideal for indoor useB2. The LiFePO4 pack and 5-year warranty round out a unit testers describe as proven and indoor-safeB3.
“At right under 40 lbs it's noticeably lighter than many other 2kWh stations — small, compact, with a flip-up handle that makes it easy to carry and stash in a car. Not featherweight, but easy to move from car to garage.”
Sources
outdoorgearlab.com · backuppowerhub.com · thesolarlab.com · voltagebasics.com · portablepowerstationreview.com · gp-reviews.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
- Lightweight, compact portability is the standout theme; quiet operation (especially in Silent mode) and proven real-world reliability round out strong sentiment. [Explorer 2000 v2 · 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
“At right under 40 lbs it's noticeably lighter than many other 2kWh stations — small, compact, with a flip-up handle that makes it easy to carry and stash in a car. Not featherweight, but easy to move from car to garage.”
outdoorgearlab.com / backuppowerhub.com — Jackery Explorer 2000 v2 review · 2025-2026 · [positive]
- B2
“The fan is relatively quiet and comes on infrequently — about 30 dB in Silent Charging Mode, ideal for indoor use. It's louder than the advertised sub-30 dB during normal charging, but the app's Silent mode dramatically reduces fan noise at the cost of charge speed.”
thesolarlab.com / voltagebasics.com — Explorer 2000 v2 review · 2025-2026 · [positive]
- B3
“LiFePO4 chemistry gives a long lifespan and indoor-safe operation, backed by a 5-year manufacturer warranty.”
portablepowerstationreview.com / gp-reviews.com — Explorer 2000 v2 review · 2025-2026 · [positive]
- B4
“Used for over six months on camping trips and as office backup for a laptop, monitor, and Starlink; rode out a multi-hour simulated home outage powering a standard fridge plus lighting and a laptop with no noticeable voltage drops.”
outdoorgearlab.com — Explorer 2000 v2 long-term testing · 2026 · [positive]
Research compiled July 16, 2026.
Who Should Buy Which
Buy the DELTA 3 if you…
- →Your loads fit inside 1,024Wh — CPAP, laptops, phones, a few lights — and you'd rather pocket the $280 and add an expansion battery later than pay for 2kWh you won't use tonight.
- →You want the better app, the faster 10ms UPS, and a foot in EcoFlow's ecosystem, with the option to grow the setup past 2,042Wh on your own timeline.
Buy the Explorer 2000 v2 if you…
- →You need about 2kWh of backup now — a fridge and lights through an evening outage, a full workstation off-grid — and you want it in one sealed, proven box rather than a base unit plus add-ons.
- →You value retail ubiquity and a return counter at Costco or Amazon over app polish, and 39.5 pounds for 2,042Wh is a carry you're happy with.
If neither fits
If you need a self-sufficient camping weekend (2,100Wh) or a van-life day (4,685Wh), both fall short — size up to a 3kWh-plus unit rather than stretching either of these past its limits.
The Bottom Line
Buy the Jackery Explorer 2000 v2 if you need about 2kWh today: 2,042Wh for $799 at $.39 per watt-hour, light for its class at 39.5 pounds, and proven across six months of field use, clearing the blackout and workday the DELTA 3 can't finish. When the reason you're shopping is capacity, the unit with twice the battery wins.
But if 1,024Wh already covers your night, the DELTA 3 is the sharper buy: $280 less, lighter, a better app, a faster UPS, and an expansion path that eventually passes the Jackery's sealed ceiling. One of these is a finished 2kWh box; the other is a 1kWh platform you grow into. Match the one you pick to the load you actually run, not the bigger number on the box.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the Jackery Explorer 2000 v2 better than the EcoFlow DELTA 3?
It comes down to how much power you need, because they're different sizes: the Jackery holds 2,042Wh and the DELTA 3 holds 1,024Wh. If you need roughly 2kWh for backup, the Jackery is the better buy at $.39 per watt-hour and clears an 8-hour blackout the DELTA 3 can't. If your loads fit in 1,024Wh, the DELTA 3 is $280 cheaper, lighter, and expandable later.
Can the EcoFlow DELTA 3 expand to match the Jackery's capacity?
Yes. The DELTA 3 accepts EcoFlow expansion batteries and can pass the Jackery's fixed 2,042Wh, where the Explorer 2000 v2 is a sealed unit that never grows. The catch is that the expansion battery is a separate purchase, so out of the box you're still choosing 1,024Wh for $519 over 2,042Wh for $799.
Which charges faster from solar?
Relative to its size, the DELTA 3 — it takes 500W of solar into 1,024Wh, while the Jackery takes only 400W into more than twice the capacity. That makes the Jackery slower to refill off panels despite being the bigger battery, which matters if you're going off-grid and leaning on the sun.
Why is the DELTA 3 cheaper if it's the newer unit?
Because it's half the battery: 1,024Wh to the Jackery's 2,042Wh. The lower $519 price buys less capacity, not a worse unit; per watt-hour the Jackery is actually cheaper. You're paying the DELTA 3's price for flexibility and a smaller footprint, and the Jackery's for raw capacity you get up front.
Where to buy
EcoFlow DELTA 3
$549.00
$549.00 list · direct from EcoFlow
Jackery Explorer 2000 v2Pick
$799.00
$799.00 list · direct from Jackery
Prices may vary by retailer and are subject to change.