Head-to-head test
EcoFlow DELTA 3000 Gen4 vs Anker SOLIX C2000 Gen 2Half Again the Battery, Inverter and Cycles. Worth the Jump?
Half again the C2000 Gen 2's battery, inverter and cycle rating, in a box that can never take another battery. I'd make the jump for a house that loses power overnight, and skip it for anything that rides in a car.
Black Friday · 23 days out
Price to beat:SOLIX C2000 Gen 2 $600
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Full profiles: EcoFlow DELTA 3000 Gen4 → · Anker SOLIX C2000 Gen 2 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunner’s take
Whole-Home Backup Tester
Every spec that matters on the DELTA 4 (3000) is the C2000 Gen 2's, plus half.
EcoFlow's new box holds 3,072 Wh to the SOLIX C2000 Gen 2's 2,048 Wh, runs 3,600 W to its 2,400 W, and carries a 6,000-cycle rating to its 4,000. That's half again on all three, for $699 more and 15.6 lb more to lift.
The extra 1,024 Wh is a second evening.
Run the same 8-hour blackout on both and the C2000 Gen 2 reaches morning with 96 Wh left, 6% of another night. The DELTA 4 (3000) reaches it with 966 Wh, 59% of another night already in the tank.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
solar input
Outages don't end on schedule. The C2000 Gen 2 starts day two on 96 Wh, so the fridge waits on the sun or the grid. The DELTA 4 (3000) starts it with most of another evening banked, and its solar input takes 1,000 W against 800 W, so it also refills faster.
DELTA 4 (3000): 2,611 Wh usable; SOLIX C2000 Gen 2: 1,741 Wh usable, both at the page's 85% derate8-Hour Blackout needs 1,645 WhC2000 Gen 2 finishes with 96 Wh left; DELTA 4 (3000) with 966 WhSolar input: 1,000 W against 800 W
Why it mattersIf your outages run past one night, the step up earns its gap on the first morning.
Capacity
Its first expansion battery mostly buys back capacity the DELTA 4 (3000) already has, and you buy it as a second box. The Anker only pulls ahead once you'd want more than 3,072 Wh. Short of that, the EcoFlow is the simpler way to own the same storage.
DELTA 4 (3000): sealed at 3,072 Wh, no battery portA6SOLIX C2000 Gen 2: 2,048 Wh, takes Anker expansion batteriesGap: $699
Why it mattersIf 3 kWh is your honest ceiling, buy it once in the EcoFlow. If you can see past it, the Anker is the one that keeps going.
weight
A camper's 30 A cord plugs into the C2000 Gen 2's RV outlet. The EcoFlow's 30 A outlet is a twist-lockA3, a different plug. And a van's daily load outruns both batteries, so the unit that can add a second one is the one that finishes the job.
SOLIX C2000 Gen 2: 41.7 lb, a 12 V car socket and a 30 A RV outletDELTA 4 (3000): 57.3 lb, no car socketA3DELTA 4 (3000)'s 30 A outlet is a three-slot twist-lockA3Van Life Daily needs 4,685 Wh; neither covers it on one battery
Why it mattersIf it lives in a van or an RV, buy the C2000 Gen 2 and plan for an expansion battery.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: The 8-hour blackout ends with 966 Wh left on the DELTA 4 (3000) and 96 Wh on the C2000 Gen 2.
On a blackout, the C2000 Gen 2 finishes. Barely. It reaches morning at 94% used. The DELTA 4 (3000) gets there at 63%. On a 2,100 Wh camping weekend the Anker runs 359 Wh short, and the EcoFlow has 511 Wh to spare.
Light loads don't split them. A CPAP night uses 12% of the EcoFlow and 18% of the Anker, and both clear the remote workday and the tailgate. Van Life Daily beats both: the DELTA 4 (3000) comes up 2,074 Wh short and the C2000 Gen 2 2,944 Wh, and only the Anker can add a battery to close it.
Growth Path
Selected because: Sealed at 3,072 Wh, against a 2,048 Wh unit that takes extra batteries.
solar input
Sealed is the honest weakness of my pick. This DELTA 4 has no battery portA6. EcoFlow kept extra batteries for the bigger DELTA 4A6, so 3,072 Wh is the ceiling. Outgrow it and your upgrade is a second station.
The Anker's growth starts from behind. The C2000 Gen 2 takes Anker's expansion batteries, but it begins 1,024 Wh short of the EcoFlow, so its first add-on mostly catches up. It only wins this section if you'd go past 3,072 Wh. I'd decide that before buying either.
What the Specs Don't Tell You
Selected because: 3,600 W with a 7,200 W surge, against 2,400 W with a 4,000 W surge.
rated cycles
The bigger inverter is the part of the step up you feel at switch-on. The DELTA 4 (3000) runs 3,600 W and surges to 7,200 W. The C2000 Gen 2 runs 2,400 W and surges to 4,000 W. A fridge or sump pump motor pulls two to three times its running draw for a moment as it starts, and two motors kicking on together is where the Anker's ceiling gets close.
Switchover is a tie, and the wall plug is worth a thought. Both are rated to take over in no more than 10 ms. EcoFlow's FAQ says the DELTA 4 (3000) doesn't support HID, the USB link a UPS uses to tell a computer to shut downA8. It also charges at up to 1,800 W from the wall, which is 15 A at 120 V, the whole of a 15 A circuitA4. On a shared kitchen circuit, I'd turn that down in the app.
Portability & Form Factor
Selected because: 57.3 lb against 41.7 lb, and only the C2000 Gen 2 has a car socket and an RV outlet.
weight
15.6 lb is the gap between a lift and a plan. The C2000 Gen 2 is 41.7 lb and swings into a trunk. The DELTA 4 (3000) is 57.3 lb with a handle at each endA7. I'd carry it alone, but I'd think about the stairs first.
The Anker also has the vehicle ports. It has a 12 V car socket and an RV outlet, and two of its USB-C ports deliver 140 W. The DELTA 4 (3000) has no car socket and one 140 W USB-C port beside two 65 W onesA3.
Every port, labelled
What plugs in where, and how much it takes
EcoFlow DELTA 3000 Gen4
Front panel
- 1USB-C · 140 WOutUp to 140 W (USB-PD up to 28 V at 5 A). The port for a laptop.
- 22× USB-C · 65 WOutUp to 65 W each. EcoFlow says these two and the USB-A share 16 W when two or more are in use at once.
- 3USB-A · 36 WOutUp to 36 W (5, 9 or 12 V at 3 A).
- 430 A twist-lockOutA three-slot twist-lock marked 30A MAX, rated 30 A at 120 V on the US unit.
- 54× 20 A outletsOutFour T-slot 120 V outlets rated 20 A each, sharing 3,600 W continuous and a 7,200 W surge.
Photo: EcoFlow · Product image, EcoFlow Japan store · numbers and labels are ours. Ratings from EcoFlow’s US spec table; outlet shapes read by us from EcoFlow’s picture, taken of the Japanese unit, which shares the US panel.
Input side
- 1Solar/DC in · 1,000 WIn11 to 60 V, up to 20 A, 1,000 W.
- 2AC in · 1,800 WIn100–120 V at 15 A. Charges at up to 1,800 W, which at 120 V is the whole of an ordinary 15 A circuit.
No battery port: the 3000 doesn’t take extra batteries.
Photo: EcoFlow · Product image, EcoFlow Japan store · numbers and labels are ours. Ratings from EcoFlow’s US spec table and the panel’s own printing.
Anker SOLIX C2000 Gen 2
Front panel
- 112 V car socket · 120 WOutA 12 V car socket behind a cap, with its own button below it. Anker rates it 12 V at 10 A.
- 22× USB-C · 140 WOutC1 and C2, up to 140 W each (28 V at 5 A). Output only, by Anker’s FAQ.
- 3USB-C · 15 WOutC3, up to 15 W (5 V at 3 A). It shares a 20 W limit with the USB-A port, as printed on the panel.
- 4USB-A · 12 WOutUp to 12 W (5 V at 2.4 A), inside the 20 W it shares with the 15 W USB-C.
- 55× 20 A outletsOutFive NEMA 5-20 outlets at 120 V. All the AC outlets share 2,400 W continuous and a 4,000 W peak, by Anker’s spec table.
- 6TT-30 RV outletOutA NEMA TT-30 outlet, the plug on a camper’s 30 A shore-power cord. Anker rates it 120 V, 20 A max, inside the same 2,400 W.
The inputs are on the left side and the battery port on the right, mapped below.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. USB ratings printed on Anker’s panel; outlet types, the car socket and the AC totals from Anker’s US C2000 Gen 2 spec table (ankersolix.com/products/c2000-gen2).
Input side
- 1AC in · 1,800 WInPrinted 120V 15A Max, 50/60 Hz. Anker puts AC charging at 1,800 W, full in 88 minutes.
- 2XT60i solar in · 800 WInPrinted 11–28 V at 8.2 A or 28–60 V at 17 A, 800 W max. The one DC input: Anker also lists car charging at 100 W and its 800 W alternator charger.
Between the two inputs, a push switch Anker calls the Overload Protection Switch.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. Ratings printed on Anker’s panel; port names and the AC charging figure from Anker’s US C2000 Gen 2 page (ankersolix.com/products/c2000-gen2).
Battery side
- 1Battery portIn · OutA covered port for Anker’s BP2000 (Gen 2) expansion battery, 2,048 Wh: up to 4 kWh in all, by Anker’s page.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. Port named in Anker’s spec diagram; the battery and the total from Anker’s US C2000 Gen 2 page (ankersolix.com/products/c2000-gen2).
Strengths & trade-offs
EcoFlow DELTA 3000 Gen4
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$699) than the SOLIX C2000 Gen 2.
- –Significantly heavier (+15.6 lbs), making it harder to move.
Anker SOLIX C2000 Gen 2
Strengths
- +Costs $699 less
- +Lighter by 15.6 lb
Trade-offs
- –Weaker inverter (-1,200W) limits appliance compatibility.
- –Shorter-lived battery — rated for 4,000 charge cycles vs the DELTA 3000 Gen4's 6,000, so it wears out sooner.
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 3000 Gen4
The C2000 Gen 2 runs 359 Wh short of this 2,100 Wh weekend. The DELTA 4 (3000) finishes with 511 Wh left, so it takes the weekend outright.
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 3000 Gen4
Both reach morning. The C2000 Gen 2 gets there on 96 Wh, while the DELTA 4 (3000) still holds 966 Wh, more than half of a second night.
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
A CPAP is about 40W for eight hours, so both of these cover the night several times over — capacity isn't the question here. The only published difference is fan noise, and it can't settle this: the SOLIX C2000 Gen 2 is rated 30dB and the DELTA 3000 Gen4 40dB, but the SOLIX C2000 Gen 2's is its maker's best case and the DELTA 3000 Gen4's is EcoFlow's maximum under heavy charge and discharge, so at a 40W draw the real gap can only be narrower than it looks, and may even run the other way. Neither settles which box is quieter at a bedside. Buy whichever is cheaper or easier to carry.
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 3000 Gen4
The DELTA 3000 Gen4 clears the workday at 35% used, banking 1,701Wh — late work, extra calls, or a second laptop charge without arithmetic. The SOLIX C2000 Gen 2 at 52% also finishes, with 831Wh of slack for the unplanned.
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 3000 Gen4
Both run the party with plenty left. The DELTA 4 (3000) wins on reserve and loses on the walk: it's 15.6 lb heavier from the trunk.
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 covers 4,685 Wh a day on one battery. Only the C2000 Gen 2 can add a second; the DELTA 4 (3000) has no battery port.
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 3000 Gen4 runs 12.7h vs 8.5h.
$1,699 list · direct from EcoFlow
Planning for more than this? Describe your whole setup and get it sized →
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
November 4, 2026
Verdict: the DELTA 3000 Gen4, on Power Score margin
For home backup, I'd pay for the step up to the DELTA 4 (3000). For $699 more it carries half again the SOLIX C2000 Gen 2's battery, inverter and cycle rating: 3,072 Wh, 3,600 W and 6,000 cycles against 2,048 Wh, 2,400 W and 4,000. That turns an 8-hour blackout from a finish on 96 Wh into one with 966 Wh in reserve, and over its rated life it costs $0.09 per kWh against $0.12. The price of all that is a ceiling. It has no battery portA6, it's 15.6 lb heavier, and EcoFlow ships it in early DecemberA10. If the box rides in a vehicle, you'll want more than 3,072 Wh someday, or you need power before December, buy the C2000 Gen 2.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of November 4, 2026. The links below open EcoFlow's and Anker's current prices.
$1,699.00 · direct from EcoFlow
or check the SOLIX C2000 Gen 2 price$999.99 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated November 4, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): CPAP, 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 3000 Gen4 rates 4.8/5 (86th percentile of 29 Large-class units), and SOLIX C2000 Gen 2 rates 4.1/5 (50th percentile of 29 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.
Sealed at 3,072 Wh
The DELTA 4 (3000) can't add a battery. It starts 1,024 Wh ahead of the C2000 Gen 2, which takes Anker expansion batteries, so the Anker's add-ons only pull ahead if you'd grow past 3,072 Wh. Know your ceiling before you buy.
The Step Up You Feel at Switch-On
The DELTA 4 (3000) surges to 7,200 W against 4,000 W, on 3,600 W continuous against 2,400 W. Motors pull hardest the instant they start, and the ceiling decides whether they do. Check your heaviest motor against the Anker's 4,000 W before ruling it out.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The DELTA 3000 Gen4's figure is a maximum rather than a guarantee — it depends on registering the unit in the EcoFlow app, which adds two years to a three-year standard term. Worth saying because the per-dollar framing can suggest otherwise: the SOLIX C2000 Gen 2 works out at 5 years of cover per $1,000 spent against the DELTA 3000 Gen4's 2.9, but that spread is the price gap, not the terms.
Half Again the Rated Cycles
6,000 cycles against 4,000. At one a day that's 16.4 years against 11. Counted in energy, it's 18,432 kWh over the rating against 8,192 kWh. Two outages a year will never get near either number.
Full record above — the Test Desk pick is the DELTA 3000 Gen4.
Check DELTA 3000 Gen4 price →or check the SOLIX C2000 Gen 2 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 SOLIX C2000 Gen 2 is cheaper to buy, but the DELTA 3000 Gen4 is cheaper to own. At $0.09/kWh over its lifetime vs $0.12/kWh, the DELTA 3000 Gen4'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. At the top of the range sit two whole-home paths: the TITAN line, one 5 kWh unit that grows to 30 kWh, and the DELTA Pro Ultra platform, which stacks batteries and inverters further — flagship paths, not line-wide features.
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.
Anker
Ecosystem
7-8 SOLIX portable power stations across C-series (compact) and F-series (flagship), plus the X1 home energy system
Support
US-based support. Historically known for incredible no-hassle replacements, but recent reports describe AI-driven support agents giving generic responses and complex return logistics for heavy units (hazmat shipping). The Anker brand reputation is still strong, but SOLIX-specific support quality is trending down.
Community
Moderate — active Reddit (r/Anker, r/AnkerSOLIXCommunity) and growing. Benefits from Anker's massive consumer electronics brand awareness.
App experience
Rated 4.5/5 iOS (~1,100 ratings) · 4.3/5 Android
Unique strength
Parent brand trust from Anker's consumer electronics dominance. InfiniPower technology for long cycle life. Strong $/Wh value in the mid-size and larger units — the S2000, F2600 and C1000 are among the better buys per watt-hour in the catalog.
Worth knowing
Support quality appears to be declining from its historically excellent level. Firmware updates have removed features without warning. Expansion ecosystem is smaller than EcoFlow's.
Analyst note
EcoFlow positions itself as a mid-to-premium brand with stronger support infrastructure, while Anker competes on value. The question is whether the EcoFlow ecosystem and support premium is worth it for your use case.
Growth path
DELTA 3000 Gen4
FIXED CAPACITYFixed at 3,072Wh — a sealed, complete system rather than a starting point. There's no expansion port, so that figure is the ceiling: check it against your longest unplugged stretch before you buy.
Accepts up to 1,000W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
SOLIX C2000 Gen 2
EXPANDABLESupports Anker 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 800W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are Anker-specific. You're investing in the Anker ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Don't read the SOLIX C2000 Gen 2's expandability as a straight win here: it starts at 2,048Wh, below the DELTA 3000 Gen4's 3,072Wh, so a first expansion battery largely buys back capacity the DELTA 3000 Gen4 already includes. It only pulls ahead if you'd grow past 3,072Wh — short of that, the DELTA 3000 Gen4'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 3000 Gen4
Nobody owns a DELTA 4 (3000) yet. EcoFlow put it on sale on November 4 and ships it in early DecemberA10, so everything here comes from EcoFlow's US store page and our arithmetic on itA1A2A9.
The claim I'd test first is the fridge one, because this page leans on the second night. EcoFlow says it runs a refrigerator for up to 58 hours, by its own figureA12. Hypothetically, I'd plug a kitchen fridge into a full one, cut the grid, and see whether the second evening still shows on the screen.
“Capacity 3,072 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3000 Gen4; buyers and the press call the pair the DELTA 4.”
Sources
us.ecoflow.co · jp.ecoflow.co
Anker SOLIX C2000 Gen 2
Reviewers come away from the C2000 Gen 2 with very little to complain about. One called it among the most attractive 2 kWh stations on the marketB4. Others found it plug-in-and-go simple, with no firmware fussB2, and liked the app for watching a chargeB3.
The quiet gets mentioned most. One review found the fans stayed subdued even at full powerB1, and the Gen 2 is much lighter than the original C2000B5. That's reviewers on fresh units, not owners a year inB0.
“Even at full power it's far quieter than any other powerful Anker station tested — the fans never rise above a subdued, easily-backgrounded whirr, working largely silently and only occasionally reaching a pleasantly quiet ~35 dB at 1 m under high load.”
Sources
notebookcheck.net · thesolarlab.com · trustedreviews.com · androidguys.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
- Launch-day ledger: every entry is EcoFlow's own US store and documentation, or our labelled arithmetic. No owner or reviewer evidence exists yet. [DELTA 3000 Gen4 · 12 entries]
- Reviewers consistently praise quiet operation, fast charging, premium build, and no-fuss plug-and-play simplicity. [SOLIX C2000 Gen 2 · 3 entries]
- A1
“Capacity 3,072 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3000 Gen4; buyers and the press call the pair the DELTA 4.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A2
“US unit: 120 V AC, 60 Hz; rated 3,600 W continuous with a 7,200 W surge. It supports X-Boost (EcoFlow refers to the manual for the US X-Boost figure); X-Boost is unavailable while the unit charges from the wall or runs in bypass.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A3
“AC outlets: 5 total, four rated 20 A max and one rated 30 A max (on EcoFlow's product images, four T-slot outlets and a three-slot twist-lock). USB-A: one port, 36 W max. USB-C: one at 140 W max and two at 65 W max; the two 65 W ports share circuitry with the USB-A, limited to 16 W total when used together. No 12 V car socket.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A4
“AC input 100–120 V, 15 A, 50/60 Hz; X-Stream charging up to 1,800 W from a US wall outlet. Our arithmetic: 1,800 W at 120 V is 15 A, the full rating of an ordinary 15 A circuit, so on a shared circuit you would set the charge rate lower in the EcoFlow app.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A5
“Solar: one input, 11–60 V DC at up to 20 A, 1,000 W (XT60i; an XT60i-to-LP60 cable is in the box). EcoFlow lists six charging methods; its 800 W Alternator Charger is limited to 500 W through the Solar/DC port.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A6
“No extra-battery port. EcoFlow lists expansion only for the DELTA 3800 Gen4 (two extra batteries through its expansion adapter); the 3000 is sealed at 3,072 Wh.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A7
“Weight 57.3 lb (26 kg); 16.77 × 11.36 × 12.09 in without handles, 18.76 in long with them. A handle at each end; EcoFlow sells a folding transport cart separately ($109 at launch, listed at $199). EcoFlow calls it the smallest and lightest portable power station in its class (3 kWh and 3,600 W).”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A8
“Switches to backup within 10 ms when the grid drops; EcoFlow's FAQ says it does not support HID communication. Noise by EcoFlow's figures: 40 dB or less at up to 1,800 W, 50 dB or less at the full 3,600 W. IP20.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A9
“Rated for 6,000 cycles (EcoFlow: "15+ years"). Charges at 32–113°F (0–45°C), runs at 14–113°F (−10–45°C). Wi-Fi and Bluetooth with the EcoFlow app. Warranty: 3 years plus a 2-year extension when registered in the EcoFlow app.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A10
“On sale at us.ecoflow.com from November 4, 2026 at $1,699; EcoFlow says it ships in early December. Kit with two 160 W solar panels $2,299. EcoFlow also sells it in Japan, where it went on sale October 30 at ¥179,900.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A12
“Powers a refrigerator for up to 58 hours, which EcoFlow says is 17 hours (41.5%) longer than the industry average for 3 kWh portable power stations. Both figures are EcoFlow's own claims, not our measurement.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [positive]
- B1
“Even at full power it's far quieter than any other powerful Anker station tested — the fans never rise above a subdued, easily-backgrounded whirr, working largely silently and only occasionally reaching a pleasantly quiet ~35 dB at 1 m under high load.”
notebookcheck.net / thesolarlab.com — Anker SOLIX C2000 Gen 2 review · 2026 · [positive]
- B2
“Really simple to use — no need to download firmware or deal with weird voltage drops; you just turn it on, plug in, and go. Rapid charging and premium build.”
trustedreviews.com / thesolarlab.com — Anker SOLIX C2000 Gen 2 review · 2026 · [positive]
- B3
“The Anker Solix app is a good way to monitor the station during charging and use over Bluetooth or Wi-Fi; reviewers appreciated the monitoring functionality.”
androidguys.com — Anker SOLIX C2000 Gen 2 review · 2026 · [positive]
- B4
“Delivers a convincing performance with few points of criticism — undoubtedly one of the most attractive 2 kWh power stations on the market.”
notebookcheck.net — Anker SOLIX C2000 Gen 2 review · 2026 · [positive]
- B5
“Substantially lighter than its predecessor — the Gen 2 shed a large amount of weight versus the original C2000, making it notably easier to carry for its capacity.”
notebookcheck.net — '11.6 kg lighter than its predecessor' review · 2026 · [positive]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3000 Gen4 if you…
- →Your power goes out overnight and stays out. It ends an 8-hour blackout with 966 Wh left against 96 Wh.
- →3,072 Wh is as far as you'll ever go. It's sealed, and that's fine if you know it.
- →You run something with a motor. 3,600 W and a 7,200 W surge against 2,400 W and 4,000 W.
- →It will cycle often, on solar. 6,000 rated cycles against 4,000, or $0.09 per lifetime kWh against $0.12.
Buy the SOLIX C2000 Gen 2 if you…
- →It rides in a vehicle. 41.7 lb, a 12 V car socket and an RV outlet.
- →You'll grow past 3,072 Wh. Only the C2000 Gen 2 takes extra batteries.
- →You need power before December. EcoFlow ships the DELTA 4 (3000) in early DecemberA10.
- →One night is the job. It finishes the 8-hour blackout and the remote workday for $699 less.
If neither fits
If your list is a CPAP and some phones, both are more than you need. The C2000 Gen 2 uses 18% of itself on a CPAP night, so a smaller, lighter unit does that job for less.
The Bottom Line
For a house that loses power overnight, I'd make the jump to the DELTA 4 (3000). Half again the battery is the difference between ending the night on 96 Wh and ending it with most of another evening in hand.
If it travels, or you'll ever want more than 3,072 Wh, stay with the C2000 Gen 2. It's lighter, it plugs into a camper, and it's the one that can grow.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the DELTA 4 (3000) worth it over the Anker SOLIX C2000 Gen 2?
For home backup, yes. It holds 3,072 Wh against 2,048 Wh and ends an 8-hour blackout with 966 Wh left where the C2000 Gen 2 has 96 Wh. For a van, an RV or car trips, the lighter C2000 Gen 2 is the better buy, and it can take extra batteries.
How much is the DELTA 4 (3000) in the US, and when does it ship?
EcoFlow lists it at $1,699 on its US store. It went on sale on November 4, 2026, and EcoFlow says it ships in early December. The SOLIX C2000 Gen 2 sells for $1,000.
Can you add a battery to the DELTA 4 (3000)?
No. It has no extra-battery port, so 3,072 Wh is its ceiling. The SOLIX C2000 Gen 2 takes Anker's expansion batteries.
Which is better for an RV or a van?
The SOLIX C2000 Gen 2. It has an RV outlet and a 12 V car socket, weighs 41.7 lb against 57.3 lb, and can add batteries. Neither covers a 4,685 Wh van day on its own battery.
Which one charges faster from solar?
The DELTA 4 (3000). Its one solar input takes up to 1,000 W at 11 to 60 V, against 800 W on the SOLIX C2000 Gen 2.
Where to buy
EcoFlow DELTA 3000 Gen4Pick
$1,699.00
$1,699.00 · direct from EcoFlow
Anker SOLIX C2000 Gen 2
$999.99
$999.99 · direct from Anker
Last checked 31 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.