Head-to-head test
EcoFlow DELTA 2 vs Anker SOLIX C1000 Gen 2
The C1000 Gen 2 out-specs the DELTA 2 on nearly everything that matters β quieter, longer-lived, more output, faster β for $31 more (on last listed prices), leaving the DELTA 2 as the budget pick if you can live with its louder fan.
Full profiles: EcoFlow DELTA 2 β Β· Anker SOLIX C1000 Gen 2 β
Looking for a different matchup? EcoFlow DELTA 2 vs Anker SOLIX C1000
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
This is a newer, quieter unit against a cheaper, older one. The Anker SOLIX C1000 Gen 2 and the EcoFlow DELTA 2 hold the same 1,024Wh and share the same expandable design, but almost everywhere else the Anker pulls ahead β for $31 more, at $530 to the DELTA 2's $499 (last listed price).
The gap that matters most is noise. The DELTA 2 is rated 50dB and its fan is the complaint owners raise most, spinning up above just 120 wattsA1. The C1000 Gen 2 sits at 35dB and stays near-silent until real load arrivesB2. For a unit that runs in your living room or bedroom, that's the difference between forgetting it's on and being reminded of it.
The Anker piles on from there: a 4,000-cycle battery to the DELTA 2's 3,000, 2,000W of output to 1,800, a lighter 24.9-lb body, 600W of solar to 500, a faster 49-minute rechargeB1, and a quicker UPS cutover. The DELTA 2's answer is price β $31 less (on last listed prices) for the same capacity, and a proven 18-month track recordA3. A real saving, but the only column it wins.
What the Numbers Reveal
Each conclusion stated first β the numbers behind it on one line, the full analysis below.
The DELTA 2's fan triggers above 120 watts and runs 48-55dB under load β the flaw owners cite mostA1 β while the C1000 Gen 2 stays quiet until real load arrivesB2, so the Anker fixes the exact weakness that most defines the DELTA 2.
the DELTA 2 is rated 50dB with its fan its top complaintA1the C1000 Gen 2 is rated 35dB and quiet until past ~1,000WB2both are used indoors for CPAP, home office, and backup
Why it mattersAnyone running the unit in living space overnight should weigh the Anker's quiet heavily against the DELTA 2's saving.
rated cycles
The C1000 Gen 2's extra 1,000 cycles spread its higher price over a third more lifetime energy, landing both units at $0.16 per lifetime kWh β so the DELTA 2's $31 saving (on last listed prices) is a genuine upfront discount, not a long-term value win.
the C1000 Gen 2 is rated 4,000 cycles vs the DELTA 2's 3,000both cost the same to own ($0.16 per lifetime kWh)the DELTA 2 is $31 cheaper upfront ($499 (last listed price) vs $530)
Why it mattersBudget buyers get real money back today with the DELTA 2; long-term value is a wash.
continuous output
The C1000 Gen 2 sustains 200W more, refills in about 49 minutesB1, and hands off to battery in under 10ms β line-interactive UPS territory β while the DELTA 2's 20ms cutover sits a tier back, so the Anker is the sturdier choice for high-draw gear and sensitive electronics alike.
the C1000 Gen 2 outputs 2,000W and recharges in ~49 minutesB1the DELTA 2 outputs 1,800W with a 20ms UPS switchoverthe C1000 Gen 2 switches over in under 10ms
Why it mattersFor running bigger appliances or protecting a desktop PC, the C1000 Gen 2 is the safer inverter.
The specific dimensions that decide these two units β everything else is a tie.
What the Specs Don't Tell You
Selected because: Noise, cycle life, output, and UPS speed all favor the C1000 Gen 2.
rated cycles
Nearly every spec-level tiebreaker points at the Anker. It's rated 35dB to the DELTA 2's 50, lasts 4,000 cycles to 3,000, sustains 2,000W to 1,800, takes 600W of solar to 500, and switches over in under 10ms to the DELTA 2's 20. The DELTA 2 doesn't lead a single one of these lines.
The noise gap is the one that reshapes daily life. The DELTA 2's fan is its defining complaint β loud above 120WA1 β while the C1000 Gen 2 stays quiet until heavy loadB2. For a unit that lives in your home, that's not a spec-sheet footnote; it's whether you notice the thing running at 2 a.m.
Lifetime Value
Selected because: Identical cost-to-own makes the $31 price gap (on last listed prices) the DELTA 2's whole case.
Here's where the DELTA 2 makes its stand β and it's a fair one. Both units land at $0.16 per lifetime kWh, because the C1000 Gen 2's extra 1,000 cycles offset its $31-higher price (on last listed prices) almost exactly. Over the full life of the unit, they're equally economical.
But upfront, $31 (on last listed prices) is $31. The DELTA 2 delivers the same 1,024Wh for meaningfully less cash today, on a platform with an 18-month reliability record behind itA3. If your budget is tight and the Anker's refinements don't move you, the DELTA 2 is the cheaper way to the same capacity.
Portability & Form Factor
Selected because: The C1000 Gen 2 is 2.1 lbs lighter β a small edge on top of the rest.
weight
The C1000 Gen 2 is the lighter unit at 24.9 pounds to the DELTA 2's 27 β a modest 2.1-pound edge. It won't decide the matchup, but for a unit that moves between rooms or rides to a campsite, lighter is always the friendlier choice.
It's one more small tally in the Anker's column, alongside the quieter fan, longer battery, and faster charging. Individually minor; together they're why the C1000 Gen 2 is the better unit, and why the DELTA 2's case rests almost entirely on its price.
Brand Trust
Selected because: The DELTA 2's proven record versus the C1000 Gen 2's newer refinement.
The DELTA 2's strength here is maturity: 18 months of testing through outages, camping, and daily use, with a reliable LFP battery the standoutA3. EcoFlow's app is also excellent (4.6/5). It's a known, proven quantity β its main sin is the fan.
The C1000 Gen 2 is the newer, more refined unit on a nearly-as-good app (4.5/5), reviewers' pick as the mid-size one to beatB4, though Anker's SOLIX support has slipped from its once-excellent standard. Both are trustworthy on hardware β the choice is the DELTA 2's price and record versus the Anker's across-the-board polish.
Strengths & trade-offs
EcoFlow DELTA 2
Strengths
- Solid all-rounder with standard specs.
Trade-offs
- βShorter-lived battery β rated for 3,000 charge cycles vs the SOLIX C1000 Gen 2's 4,000, so it wears out sooner.
Anker SOLIX C1000 Gen 2
Strengths
- +Lighter by 2.1 lb
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles β much longer battery lifespan
Trade-offs
- βNo major technical downsides compared to rival.
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 Β· 2 nights Β· needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
Neither unit
Neither unit covers this scenario's 2,100Wh: the DELTA 2 comes up 1,230Wh short (about 41% covered), the SOLIX C1000 Gen 2 1,230Wh (41%). Treat this as partial cover β enough for the essentials in it, not the whole list.
Battery budget usedlower = more headroom
LOADΒ Β Phone Charger 15WΓ6h Β· LED Lights 40WΓ8h Β· Box Fan 75WΓ14h Β· CPAP Machine 40WΓ16h
SCN-02 Β· 8 hours Β· needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
Neither unit
Neither unit covers a fridge-plus-lights blackout for a full eight hours alone β both hold 1,024Wh, short of the load. Both expand to get closer, but the C1000 Gen 2 recharges faster mid-outage (49-minute wall charge, more solar) and starts more with its higher sustained output. For outage planning, the Anker has the edge; for a tight budget, the DELTA 2 still covers a partial outage for $31 less (on last listed prices).
Battery budget usedlower = more headroom
LOADΒ Β Fridge 150WΓ8h Β· Router + Modem 20WΓ8h Β· LED Lights (4 bulbs) 40WΓ6h Β· Phone Charger 15WΓ3h
SCN-03 Β· 8 hours Β· needs 320Wh
CPAP Overnight
Sleep therapy without interruption β the #1 medical use case
Either unit
Both run a CPAP's ~320Wh night three times over, so capacity is a non-issue β this is entirely about the fan 18 inches from your head. The C1000 Gen 2 stays quiet at a CPAP's low draw; the DELTA 2's fan can wake up above 120 watts and run at 48-55dB. For overnight medical use, the Anker's quiet is worth real money, and this is the scenario where it shows most.
Battery budget usedlower = more headroom
LOADΒ Β CPAP Machine 40WΓ8h
SCN-04 Β· 8 hours Β· needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
Neither unit
A laptop-monitor-router day lands near 910Wh, at the usable edge of both 1,024Wh units β a tie on runtime, since they carry identical capacity. The tiebreaks favor the Anker: its 140W USB-C port fast-charges the laptop, and its quieter operation makes it the better all-day desk companion, where the DELTA 2's fan is the one you'd notice by mid-afternoon.
Battery budget usedlower = more headroom
LOADΒ Β Laptop 60WΓ8h Β· External Monitor 30WΓ8h Β· Router + Modem 20WΓ8h Β· Phone Charger 15WΓ2h
SCN-05 Β· 4 hours Β· needs 670Wh
Tailgate Party
Game day power for the crew
Either unit
Both handle game day easily. Since capacity isn't the deciding factor, weight is: at 24.9 lbs the SOLIX C1000 Gen 2 is the one you'll be glad you brought. Fan noise under load is worth a listen too β it's audible in the lulls between songs.
Battery budget usedlower = more headroom
LOADΒ Β Blender 400WΓ0.5h Β· LED TV (55") 80WΓ4h Β· Bluetooth Speaker 15WΓ4h Β· Phone Charger (Γ3) 45WΓ2h
SCN-06 Β· 24 hours Β· needs 4,685Wh
Van Life Daily
A full day of mobile living β the ultimate endurance test
Neither unit
Neither unit covers this scenario's 4,685Wh: the DELTA 2 comes up 3,815Wh short (about 19% covered), the SOLIX C1000 Gen 2 3,815Wh (19%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
Battery budget usedlower = more headroom
LOADΒ Β Mini-Fridge 150WΓ24h Β· Laptop 60WΓ4h Β· Phone Charger 15WΓ3h Β· LED Lights 40WΓ5h Β· Fan 75WΓ8h
The Load Test
RUNTIME = (Wh Γ 0.85) Γ· 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
Dead heat β both run this 205W load for roughly 4.2h. Pick on price, weight, or ports.
Planning for more than this? Describe your whole setup and get it sizedΒ β
Modeled from the spec record β same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.ΒΉ
Essentials
The basics you need runningscale 0β58hComfort & Convenience
Makes off-grid life actually enjoyablescale 0β11.6hHigh-Draw Appliances
These reveal the real limitsscale 0β0.9hΒΉ Runtime = (capacity Γ 0.85) Γ· 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 β see methodology.
Conclusion
July 13, 2026
Verdict: the SOLIX C1000 Gen 2, on Power Score margin
The Anker SOLIX C1000 Gen 2 is the better unit and worth its $31 premium (on last listed prices) for most buyers. For $530 to the DELTA 2's $499 (last listed price) it runs much quieter (35dB vs 50, and the DELTA 2's fan is its most-cited flaw), lasts longer (4,000 cycles vs 3,000), sustains more output (2,000W vs 1,800), surges higher, weighs less, takes more solar, charges faster, and switches over quicker for UPS duty. Cost-to-own is identical at $0.16 per lifetime kWh, so the C1000 Gen 2's extra cycles fully absorb its higher price over time. The DELTA 2's one real advantage is that $31 saving (on last listed prices), on the same 1,024Wh capacity β which keeps it a legitimate budget pick, just not the better machine.
Today the SOLIX C1000 Gen 2 is $499.99, $30 under its typical $529.99. The verdict weighs typical prices, not today's. Prices checked 28 days ago.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 13, 2026. The links below open Anker's current price.
$499.99 Β· direct from Anker
down from $530 Β· 6% below usual
Last checked 28 days ago. Prices move β check before you buy.
Written by Ian Schneider, Solar & Off-Grid Tester Β· Station Arena Test Desk Β· Updated July 13, 2026
Black Friday Β· 26 days out
Price to beat:SOLIX C1000 Gen 2 $450
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Full specifications
α΅ Derived: price Γ· rated capacity. See the data behind our comparisons β
Comparison ToolAdd more power stations, side by sideOpen Tool βHow these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it β no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews β see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity Γ 0.85 inverter efficiency) Γ· 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 βClass ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews β 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 5β . Here, DELTA 2 rates 4.1/5 (50th percentile of 27 Everyday-class units), and SOLIX C1000 Gen 2 rates 4.9/5 (96th percentile of 27 Everyday-class units).
How the class ranking is computed βTest Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
50dB versus 35dB β the DELTA 2's defining flaw
The DELTA 2 is rated 50dB and its fan is the complaint owners raise most, spinning up above just 120 watts. The C1000 Gen 2 sits at 35dB and stays near-silent until real load arrives. That 15-decibel gap is the difference between a unit you forget is on and one you're aware of β decisive if it runs beside a CPAP or in your living room. You can slow the DELTA 2's charge to quiet it, but at load it's the louder machine, full stop.
Under 10ms versus 20ms β a tier apart for sensitive gear
The C1000 Gen 2 switches to battery in under 10ms, fast enough for line-interactive UPS protection; the DELTA 2 takes about 20ms, a tier back in standby territory. For most appliances the difference is invisible, but for a desktop PC or NAS that can trip on a longer interruption, the Anker is the safer bet to ride through an outage without a reboot β one more edge on top of the quiet and the longer battery.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here.
4,000 cycles versus 3,000 β why the pricier unit costs the same to own
The C1000 Gen 2's battery is rated for 4,000 charge cycles to the DELTA 2's 3,000 β a third more full charges before either fades. That extra life is exactly why both units land at $0.16 per lifetime kWh despite the $31 price difference (on last listed prices): the Anker spreads its cost over more energy. Most buyers won't reach 3,000 cycles, so this matters most to heavy daily users, but it's the reason the Anker's premium isn't a long-term penalty.
Full record above β the Test Desk pick is the SOLIX C1000 Gen 2.
Check SOLIX C1000 Gen 2 price βOwnership Analysis
What happens after you buy β 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
β warranty ends Β· Reaching the cycle rating means ~80% capacity remains β degraded, not dead.
Analyst note
The DELTA 2 is no longer sold, so there is no price to work its cost per kWh from, and this comparison doesn't quote one. On what you can actually buy today, the SOLIX C1000 Gen 2 works out at $0.13/kWh over its rated life. If you already own the DELTA 2, the hardware comparison still holds: over its rated life the DELTA 2 delivers about 3,072 kWh and the SOLIX C1000 Gen 2 about 4,096 kWh.
Brand trust
EcoFlow
Ecosystem
Largest in portable power β 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 β 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 β Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) Β· 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 β 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 β 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) Β· 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 β 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
Both brands rate near the top, so this is a spec-and-price call. EcoFlow brings the deepest ecosystem and the best-rated app (4.6/5), and the DELTA 2 has an 18-month reliability record that makes it a known quantity. Anker's app is nearly as good (4.5/5) and the C1000 Gen 2 is the more refined, newer machine reviewers crown the mid-size one to beat, though its SOLIX support has slipped from its once-excellent standard. Both are trustworthy on hardware β buy from a retailer with an easy return window, and let the Anker's quieter, faster, longer-lived package or the DELTA 2's $31 saving (on last listed prices), not the badge, decide.
Growth path
DELTA 2
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit β 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.
SOLIX C1000 Gen 2
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit β useful if your needs may climb past 1,024Wh.
Accepts up to 600W 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 β see methodology
Analyst note
Growth only counts if you can still buy in, and the DELTA 2 is no longer sold (EcoFlow points owners to the DELTA 3). That leaves the SOLIX C1000 Gen 2: it starts at 1,024Wh and takes Anker expansion batteries, so the ceiling moves if your needs do. The DELTA 2's expandability still matters if you already own one, but it isn't a reason to pick it over the SOLIX C1000 Gen 2.
What Owners Report
Patterns from published owner reports and long-term reviews β every claim cited to its source below.
EcoFlow DELTA 2
The DELTA 2 earns its trust the proven way: 18 months of testing through multiple outages, camping trips, and daily home-office use, with fast charging and a reliable LFP battery its standout marksA3. It's a known, dependable 1kWh platform.
Its defining knock is noise. The fan triggers above roughly 120 watts and runs 48-55dB under load β the complaint owners raise mostA1 β though you can quiet it by lowering the charge speed in the appA2, and EcoFlow has said a firmware fix is comingA4. A solid unit whose main compromise is acoustic.
βWhen charging at 1200W the fans sound like a gaming laptop, though you can lower the charging speed in the app to silence it.β
Sources
portablepowerlab.com
Anker SOLIX C1000 Gen 2
The C1000 Gen 2 is widely rated the mid-size unit to beat in 2026 β a refined, powerful, fast-charging update to a popular platformB4 β with HyperFlash recharging in about 49 minutesB1 and enough output to run a 1,500W space heater with headroomB3.
It shares the category's one common trait: fan noise that's near-silent under 200W but climbs to around 55dB during fast charging or heavy outputB2. Crucially, it stays quiet at the light loads where the DELTA 2's fan is already spinning β the practical noise win goes to the Anker.
βFast HyperFlash charging β a full recharge in roughly 49 minutes, noticeably quicker than the original C1000's ~58-80 minutes.β
Sources
thepowerpick.com Β· macrumors.com Β· outdoorgearlab.com Β· technerdo.com Β· mensjournal.com Β· powerstationadvisor.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
- Fan noise under moderate-to-high load is the dominant, repeatedly-cited complaint; the fan spins up above ~120W. [DELTA 2 Β· 3 entries]
- Fast charging and higher output over the original are the standout gains; fan noise under load or fast charging is the top complaint. [SOLIX C1000 Gen 2 Β· 3 entries]
- A1
βFans trigger at anything above 120 watts; at maximum load (1,500β1,800W) they run continuously at ~48β55 dB. Powering medical equipment above 120W in a bedroom means listening to the fans or running an extension cable out of the room.β
portablepowerlab.com β EcoFlow Delta 2 Review: 6 Months of Real Use; PCWorld β EcoFlow Delta 2 review Β· 2026 Β· [negative]
- A2
βWhen charging at 1200W the fans sound like a gaming laptop, though you can lower the charging speed in the app to silence it.β
PCWorld β EcoFlow Delta 2 power station review Β· 2026 Β· [mixed]
- A3
βAfter 18 months of real-world testing through multiple power outages, camping trips, and daily home-office use, the unit earned recognition for fast charging, reliable LiFePO4 battery chemistry, and expandability.β
portablepowerlab.com β EcoFlow Delta 2 Review: 6 Months of Real Use Β· 2026 Β· [positive]
- A4
βEcoFlow officials indicated they plan to address the fan noise in an upcoming firmware update, as they have for other models after release.β
portablepowerlab.com β EcoFlow Delta 2 Review Β· 2026 (dated claim β may be partially addressed) Β· [mixed]
- B1
βFast HyperFlash charging β a full recharge in roughly 49 minutes, noticeably quicker than the original C1000's ~58-80 minutes.β
thepowerpick.com / macrumors.com β Anker SOLIX C1000 Gen 2 review Β· 2026 Β· [positive]
- B2
βFan noise is the single most common complaint β nearly silent at low load (about 35 dB under 200W), but the fans ramp up audibly during fast charging or heavy output, reaching around 55 dB at 1,000W-plus.β
outdoorgearlab.com / technerdo.com β C1000 Gen 2 review Β· 2026 Β· [negative]
- B3
βThe higher continuous output crosses a useful threshold over the original β enough to run a standard 1,500W space heater with headroom to spare.β
thepowerpick.com / mensjournal.com β C1000 Gen 2 review Β· 2026 Β· [positive]
- B4
βReviewers describe it as a refined, powerful, fast-charging update to a popular 1kWh platform, widely rated the mid-size unit to beat in 2026.β
thepowerpick.com / powerstationadvisor.com β C1000 Gen 2 review Β· 2026 Β· [positive]
Research compiled July 13, 2026.
What Owners Actually Report
Drawn from 169 comments on independent review channels β not from retailer reviews, which skew to the first week of ownership. Each line is our summary of one commenter's claim, linked to the original. We record what they said, including where it contradicts the spec sheet.
EcoFlow DELTA 2
224 claims from 155 comments Β· 178 from owners Β· 60 with figures
- Runtime
- 32 Β· 13% negative
- Price & value
- 38 Β· 4% negative
- Charging
- 17 Β· 23% negative
- Durability
- 22 Β· 67% negative
- Warranty & support
- 22 Β· 59% negative
What owners complain about
Ignores solar unless he unplugs it from the wall, so he switched to the AC180.
Solar inputowner63 agreedsource β
His Delta 2 went bad three months after purchase and EcoFlow agreed it was defective.
Durabilityownerafter 3 months236 agreedsource β
Past 30 days the five-year warranty only gets a refurbished unit covered for 30 days.
Warranty & supportowner236 agreedsource β
What owners praise
DELTA 2 plus extra battery and 600W solar cost ~$1200 and paid for itself in under 2 years in California.
Price & valuemeasuredowner736 agreedsource β
Batteries still hold 98%+ capacity, ahead of the 80%-at-10-years warranty curve.
Durabilitymeasuredowner736 agreedsource β
Gets 180-190W into it from a 100Ah LiFePO4 via XT60i cable, no converter needed.
Chargingmeasuredowner106 agreedsource β
Anker SOLIX C1000 Gen 2
22 claims from 14 comments Β· 18 from owners Β· 6 with figures
- Price & value
- 4 Β· 0% negative
- Runtime
- 3 Β· 15% negative
- UPS switchover
- 2 Β· 0% negative
- Inverter & surge
- 1 Β· 0% negative
- Solar input
- 1 Β· 0% negative
What owners complain about
Gen 2 loses the gen 1's ability to add an expansion battery.
Expandability23 agreedsource β
Same app failure as his other brands: paired devices go missing on later launches.
App & firmwareowner2 agreedsource β
Can only pull 100W from the C1000 Gen 2's 12V ports and cannot confirm how XT60i sensing works.
Otherownersource β
What owners praise
Two units keep his gas furnace, three fridge/freezers and network alive for 5+ hours.
Runtimemeasuredowner15 agreedsource β
Anker 1000 gen 2's edge is a 2000W inverter, also at 25 pounds.
Inverter & surgemeasuredowner8 agreedsource β
Got the C1000 gen 2 on sale for $379 plus a $219 200W panel.
Price & valuemeasuredowner6 agreedsource β
Claims are weighted by how specific they are, whether the commenter owns the unit, and how many readers agreed. Comments that mention a product under a rival's review count for more, because the commenter had no reason to be there. This is what buyers report, not our test results β for measurements we ran ourselves, see the methodology.
Who Should Buy Which
Buy the DELTA 2 if youβ¦
Buy the SOLIX C1000 Gen 2 if youβ¦
If neither fits
Both cap near 1,024Wh, so neither covers a full 8-hour blackout alone, though both expand. If you need whole-outage runtime, look at a 1.5-2kWh unit β and if silence is critical, note that even the quieter C1000 Gen 2 gets loud under heavy load.
The Bottom Line
The C1000 Gen 2 is the better unit and worth its premium for most people: quieter (35dB vs 50), longer-lived (4,000 cycles vs 3,000), with more output, more solar, faster charging, and a lighter body β all for $31 more (on last listed prices), with the same cost-to-ownB4. The noise fix alone settles it for anyone who runs the unit where they live.
The DELTA 2 keeps one genuine card: $31 less (on last listed prices) for the same 1,024Wh, on an 18-month-proven platformA3. If budget leads and you'll manage or tolerate the fan, it's a legitimate, capable buy. For everyone else, the Anker's across-the-board polish is worth the money β the DELTA 2 wins the price and loses the machine.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
EcoFlow DELTA 2 vs Anker SOLIX C1000 Gen 2 β which should I buy?
The C1000 Gen 2 for most buyers: it's much quieter (35dB vs 50), lasts longer (4,000 cycles vs 3,000), outputs more (2,000W vs 1,800), charges faster, and weighs less β for $31 more (on last listed prices), with identical cost-to-own. Choose the DELTA 2 if budget is the priority: it holds the same 1,024Wh for $31 less (on last listed prices) and is a proven platform, provided you can live with its louder fan.
Is the DELTA 2 too loud?
Its fan is its most-cited flaw β rated 50dB, it spins up above just 120 watts and runs 48-55dB under load. You can quiet it by lowering the charge speed in the app, but at typical loads it's audibly louder than the C1000 Gen 2, which stays near-silent until past 1,000W. For bedroom or living-room use, that noise gap is the DELTA 2's biggest drawback.
Is the C1000 Gen 2 worth $31 more (on last listed prices)?
For most buyers, yes β you get a quieter fan, a longer 4,000-cycle battery, more output and solar, faster charging, and a lighter body, all real day-to-day improvements. Their cost-to-own is identical, so you're paying for refinement, not just longevity. Save the $31 (on last listed prices) with the DELTA 2 only if budget rules the decision and its fan noise doesn't bother you.
Do both expand?
Yes β both the DELTA 2 and the C1000 Gen 2 accept an add-on battery to grow beyond their 1,024Wh base, so neither locks you in at the starting capacity. Expandability is a shared strength, not a reason to choose one over the other. The decision comes down to the Anker's quieter, longer-lived, faster package versus the DELTA 2's lower price.
Where to buy
EcoFlow DELTA 2
No longer sold
Anker SOLIX C1000 Gen 2Pick
$499.99
$499.99 Β· direct from Anker
down from $530 Β· 6% below usual
Last checked 28 days ago. Prices move β check before you buy.
Prices may vary by retailer and are subject to change.