Head-to-head test
EcoFlow DELTA 3 vs Anker SOLIX C1000 Gen 2
Same battery, same warranty, and the cheaper unit is also the better-equipped one: the C1000 Gen 2 wins everywhere except a 600W slice of startup surge the DELTA 3 keeps for itself.
Full profiles: EcoFlow DELTA 3 β Β· Anker SOLIX C1000 Gen 2 β
Looking for a different matchup? EcoFlow DELTA 3 Classic vs Anker SOLIX C1000 Gen 2 Β· EcoFlow DELTA 3 vs Anker SOLIX C1000
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
The Anker SOLIX C1000 Gen 2 is the cheaper of these two by $99, and it isn't cheaper because it gives anything up. Both carry 1,024Wh rated for 4,000 cycles, both carry a 5-year warranty, both expand, and both switch to battery in no more than 10ms. On that shared chassis the Anker adds 200W of running output, 100W of solar input and a 140W USB-C port, and it weighs 2.1 lbs less.
The DELTA 3 keeps one real hardware edge: a 3,600W surge ceiling against the Anker's 3,000W, which matters for a motor that spikes hard at startup. Its other card is quiet at low load, where hands-on testing found its fans often stay off under 200WA1. The catch is that the Anker is also close to silent in that rangeB2, and the standard DELTA 3's field record mostly borrows from its siblingsA0.
So the call is the C1000 Gen 2, at $530 against $629. Pay for the DELTA 3 only if you can name the motor the Anker can't start.
What the Numbers Reveal
Each conclusion stated first β the numbers behind it on one line, the full analysis below.
continuous output
The cheaper unit is therefore the cheaper one to own by exactly the same margin, and it is also the one with more running power, more solar input and less weight. There's no trade on offer. Paying more for the DELTA 3 buys back a single spec, surge.
both hold 1,024Wh rated for 4,000 cycles, with a 5-year warranty on eachthe C1000 Gen 2 is the cheaper of the two by $99the C1000 Gen 2 runs 2,000W continuous, takes 600W of solar and weighs 24.9 lbs; the DELTA 3 runs 1,800W, takes 500W and weighs 27 lbs
Why it mattersAnyone without a specific heavy-motor load should take the C1000 Gen 2 and keep the difference.
The running band is where ordinary stacked loads land: a 1,500W heaterB3 leaves the Anker 500W for everything else plugged in and the DELTA 3 only 300W. The surge band needs a motor that spikes past 3,000W, and at the 2-3Γ startup rule of thumb that's a motor running at roughly 1,000W or more (3,000W Γ· 3). One of those bands gets used on an ordinary winter evening. The other needs a specific, heavy machine.
the DELTA 3 surges to 3,600W on 1,800W continuousthe C1000 Gen 2 surges to 3,000W on 2,000W continuousreviewers ran a 1,500W space heater on the C1000 Gen 2 with headroom to spareB3
Why it mattersCheck your heaviest motor's startup draw against 3,000W; if nothing on your list comes close, the Anker's extra 200W of running power is the spec you'll actually lean on.
solar input
In that game the Anker's solar input pulls in 20% more per hour of full sun (600W against 500W), and when the grid flickers back a roughly 49-minute wall refillB1 restocks it before the next drop. The price is noise. That fast charge is exactly when its fans get loudB2, so do it in the daytime, not beside a sleeping house.
an 8-hour blackout needs 1,645Wh; each unit has 870Wh usable and comes up 775Wh shortthe C1000 Gen 2 takes 600W of solar against the DELTA 3's 500Wthe C1000 Gen 2 recharges from the wall in about 49 minutesB1, and its fans reach around 55 dB during fast charging or heavy outputB2
Why it mattersBlackout planners who expect to recharge mid-outage get more from the C1000 Gen 2, and should schedule its loud refills for waking hours.
Both are close to silent in that range, but a fan that stays off beats a fan that turns quietly, and that is where the DELTA 3 earns this page's CPAP row. The evidence is one hands-on review of a model whose field data is thinA0A1, so treat it as a lean rather than a guarantee.
a CPAP night needs 320Wh; both units finish it with 550Wh to sparehands-on testing found the DELTA 3's fans often stay off entirely under 200WA1the C1000 Gen 2 sits near 35 dB under 200WB2
Why it mattersA light sleeper buying purely to run a CPAP has the one good low-load reason to pay the DELTA 3's premium; everyone else shouldn't.
The specific dimensions that decide these two units β everything else is a tie.
Lifetime Value
Selected because: Identical 1,024Wh packs rated for 4,000 cycles turn cost-to-own into a straight price comparison.
cost / lifetime kWh
Two packs rated for the same 4,000 cycles at the same 1,024Wh deliver the same 4,096 kWh over their rated lives, so this section has an unusually short answer. Divide each price by the same number and the cheaper unit stays the cheaper one to own, by the same margin, for as long as you own it.
Cycled every single day, either pack reaches its rating in about 11 years, more than twice the 5-year warranty on each. Longevity can't break this tie, which leaves the sticker as the whole cost story. The sticker favors the C1000 Gen 2.
What the Specs Don't Tell You
Selected because: The DELTA 3's 3,600W surge is its one hardware edge, and this is where to judge whether you need it.
The DELTA 3's best spec lives here, so give it its due: 3,600W of surge on an 1,800W rating, a 2Γ ratio against the Anker's 1.5Γ. When a motor kicks on and spikes past 3,000W, only the EcoFlow catches it.
How often that happens on a 1,024Wh station is the real question. At the 2-3Γ rule of thumb, a motor has to run at roughly 1,000W or more before its startup threatens 3,000W, and that's a short list of things anyone plugs into a battery this size. The warranty card is the opposite story: five years each, so cover settles nothing.
Your Life, Your Pick
Selected because: Identical usable capacity ties every runtime row, so the tiebreaks show where each unit's edge actually lands.
Every row on this grid prints the same percentage for both units, because 870Wh usable is 870Wh usable whatever the logo says. The verdicts come down to tiebreaks, and they split along this page's lines.
Tailgate goes to the lighter C1000 Gen 2. CPAP goes to the DELTA 3 on low-load quiet, the one place that edge pays. The rest are honest misses for both: the remote workday comes up 40Wh short on either, close enough to trim one load and finish, while the blackout, the camping weekend and the van-life day want a bigger battery than either one carries.
Brand Trust
Selected because: Both brands carry support caveats; the difference that matters is how much field evidence backs each unit.
Neither brand's support record is a reason to pay more. EcoFlow's warranty experiences run polarized, and it tested paywalls on advanced app features in early 2025 before backing off; Anker's SOLIX support has slipped from its once-excellent standard, and its firmware updates have removed features without warning. Asterisks on both sides.
Where they do differ is evidence. The C1000 Gen 2 has strong review coverageB0, while the standard DELTA 3's record mostly borrows from its Plus, Max and Ultra siblingsA0. EcoFlow's larger ecosystem is worth something if you already own its gear, but for a first station the better-documented unit is also the cheaper one.
Strengths & trade-offs
EcoFlow DELTA 3
Strengths
- Solid all-rounder with standard specs.
Trade-offs
- βNo major technical downsides compared to rival.
Anker SOLIX C1000 Gen 2
Strengths
- +Costs $99 less
- +Lighter by 2.1 lb
- +Higher AC output
- +Faster solar charging
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 3 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 covers the night: both come up 775Wh short of a 1,645Wh blackout, about 53% of the way there. Plan on recharging mid-outage either way, and that favors the C1000 Gen 2, whose 600W solar input takes in 20% more per hour of full sun than the DELTA 3's 500W.
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
A CPAP is about 40W for eight hours, so both of these cover the night at least twice over β capacity isn't the question here. The only published difference is fan noise, and it can't settle this: the DELTA 3 is rated 30dB and the SOLIX C1000 Gen 2 35dB, but they are two makers' figures, each measured its own way. Neither settles which box is quieter at a bedside. Buy whichever is cheaper or easier to carry.
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
Neither finishes a 910Wh workday: each comes up 40Wh short, which is one trimmed load from done. The tiebreak is the laptop port. A laptop that asks for more than 100W gets it from the C1000 Gen 2's 140W USB-C, and not from the DELTA 3's 100W port.
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 carry a 670Wh game day with 200Wh left over, and a 400W peak is nowhere near either inverter's limit. So it comes down to the walk from the car: the C1000 Gen 2 is 2.1 lbs lighter at 24.9 lbs, and it's the one to grab.
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 3 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
October 11, 2026
Verdict: the SOLIX C1000 Gen 2
Buy the Anker SOLIX C1000 Gen 2. It shares the DELTA 3's 1,024Wh battery, 4,000-cycle rating, 5-year warranty, expansion support and β€10ms switchover, then adds 200W of continuous output (2,000W against 1,800W), 100W more solar input, a 140W USB-C port and 2.1 lbs less weight, all as the cheaper of the two by $99. The DELTA 3 keeps a 3,600W surge ceiling to the Anker's 3,000W and a lean on low-load quietA1, which makes it the pick only for a known heavy-motor startup or a nightstand that runs nothing but a CPAP.
Today the DELTA 3 is $599, $30 under its typical $629 and 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 October 11, 2026. The links below open EcoFlow's and Anker's current prices.
$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.
or check the DELTA 3 price$599.00 list
Written by Ian Schneider, Solar & Off-Grid Tester Β· Station Arena Test Desk Β· Updated October 11, 2026
Black Friday Β· 26 days out
Prices to beat:DELTA 3 $519SOLIX C1000 Gen 2 $450
The lowest we have recorded for each. A Black Friday price above it is a sale that 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 3 rates 4.5/5 (73rd 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.
3,600W against 3,000W: the DELTA 3's one real edge
Surge is the split-second spike a motor pulls at startup, and here the DELTA 3 leads: 3,600W on an 1,800W rating, against the C1000 Gen 2's 3,000W on 2,000W. The edge is a 600W band. A load whose startup lands between 3,000W and 3,600W starts on the EcoFlow and stalls the Anker; anything below 3,000W starts on both. Check your heaviest motor's startup draw against 3,000W before choosing on headroom you may never touch.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here.
Full record above β the Test Desk pick is the SOLIX C1000 Gen 2.
Check SOLIX C1000 Gen 2 price βor check the DELTA 3 priceOwnership 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
Both units have similar long-term ownership costs ($0.15/kWh vs $0.13/kWh). The price difference is what you see on the sticker β neither is a hidden bargain or rip-off. One thing to know reading the table: both carry the same 4,000-cycle rating, so the lifetime rows are sticker price and capacity in disguise β the wear horizon is identical and decides nothing here.
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
Two big brands, each with an asterisk on support, so buy whichever you pick from a retailer with an easy return window. EcoFlow's warranty claims run hot and cold, and Anker's returns on heavy units involve hazmat shipping. EcoFlow's deeper ecosystem matters if you already own its gear; for a first station, neither badge outweighs the spec sheet.
Growth path
DELTA 3
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
Both expand, so neither locks you out of growth β decide on capacity, price, and the rest, not the expansion checkbox.
What Owners Report
Patterns from published owner reports and long-term reviews β every claim cited to its source below.
EcoFlow DELTA 3
The record on the standard DELTA 3 is thin: most published testing covers its Plus, Max and Ultra siblings, so treat what follows as an early readA0. The finding that does belong to this model is quiet. Hands-on testing found the fans often stay off entirely under 200W, and are barely audible from three feet at 500-800WA1.
UPS testing found a power cut handed over fast enough that routers didn't reset and CPAPs kept runningA2, but that test was run on a DELTA 3 Plus that shares the β€10ms spec, not on this unit. Read it as a family trait, not a measurement of this box.
βAt low loads (under 200W) the fans often stay completely off, making the Delta 3 effectively silent; under moderate load (500β800W) the fans are barely audible from three feet away.β
Sources
portablepowernerd.com Β· thesolarlab.com Β· outputreport.com
Anker SOLIX C1000 Gen 2
Review coverage of the C1000 Gen 2 is strongB0, and it agrees on the headline: a refined, fast-charging update that reviewers rate the mid-size unit to beatB4. A wall recharge runs about 49 minutesB1, and the continuous output clears a 1,500W space heater with room left overB3.
The complaint reviewers single out is fan noiseB2. It's near silent around 35 dB under 200W, then climbs to about 55 dB past 1,000W or while fast chargingB2. That's the bill for the 49-minute refillB1: the speed and the noise arrive together.
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
- 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
βAt low loads (under 200W) the fans often stay completely off, making the Delta 3 effectively silent; under moderate load (500β800W) the fans are barely audible from three feet away.β
portablepowernerd.com β EcoFlow Delta 3 Tested: 2026 Hands-On Review; thesolarlab.com Β· 2026 Β· [positive]
- A2
βUPS switchover works as advertised β 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.β
outputreport.com / thesolarlab.com β DELTA 3 line UPS testing (observed on DELTA 3 Plus, which shares the 10ms UPS spec) Β· 2026 Β· [positive]
- 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 October 11, 2026.
What Owners Actually Report
Drawn from 40 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 3
34 claims from 26 comments Β· 17 from owners Β· 7 with figures
- Solar input
- 5 Β· 27% negative
- Runtime
- 3 Β· 66% negative
- Price & value
- 4 Β· 11% negative
- Build quality
- 2 Β· 100% negative
- Inverter & surge
- 2 Β· 0% negative
What owners complain about
At 30% charge it ran a 12V cool box for only 30 minutes against a claimed 12 hours at full charge.
Runtimemeasuredowner1 agreedsource β
AC-port surge protection is rated only 150 joules versus 1,800 on his UPS, so he chained both.
Build qualitymeasuredownersource β
Four 12V 100W panels in series give an overload error despite a 60V input rating.
Solar inputmeasuredownersource β
What owners praise
The same pressure washer ran on their DELTA 3 with no errors.
Inverter & surgemeasuredowner1 agreedsource β
Charges 0-100% in 1 hour on 1,000W of solar; 800W takes only 20 minutes longer.
Solar inputmeasuredowner1 agreedsource β
Bought a DELTA 3 from a Costco sale for $389 to replace a 1500VA UPS.
Price & valuemeasuredownersource 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 3 if youβ¦
- βYou have a specific motor, measured, whose startup spike lands between 3,000W and 3,600W: the DELTA 3 starts it and the Anker won't.
- βIt's going on a nightstand to run a CPAP and nothing else, and fans that tend to stay off at low drawA1 are worth the premium to a light sleeper.
- βYou already own EcoFlow expansion batteries or panels and staying on one platform matters more to you than the price gap.
Buy the SOLIX C1000 Gen 2 if youβ¦
- βYou want a 1,024Wh station for outages and weekends and see no reason to pay more for the same battery, cycle rating and warranty.
- βYou'll stack loads near the top of the range, like a 1,500W heaterB3 plus a few other things, where the 2,000W inverter has 200W more room than the 1,800W one.
- βYou'll recharge from panels during an outage and want the 600W solar input, or you charge a laptop that asks for more than 100W and want the 140W USB-C port.
- βYou carry it from the car to the site and back, and 24.9 lbs beats 27 every trip.
If neither fits
If you're sizing for a full 8-hour blackout or daily van life, close this tab. Both come up 775Wh short of the blackout's 1,645Wh and cover about 19% of a van-life day, so look at a station with nearly twice this battery for the outage and a much larger system for living on the road.
The Bottom Line
Take the Anker SOLIX C1000 Gen 2. Same 1,024Wh, same 4,000 cycles, same five years of cover, and it's the cheaper of the two while carrying more running power, more solar input and less weight. The DELTA 3's surge ceiling is real, but it only pays off for a motor that spikes into the 600W band the Anker can't reach.
If that motor isn't on your list, the choice is already made. Keep the $99 and buy the C1000 Gen 2.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Should I buy the EcoFlow DELTA 3 or the Anker SOLIX C1000 Gen 2?
The Anker SOLIX C1000 Gen 2, for most people. It's the cheaper of the two by $99 on the same 1,024Wh battery, 4,000-cycle rating and 5-year warranty, and it adds 200W of running output, 100W of solar input and a 140W USB-C port. The DELTA 3 is the pick only if you need its 3,600W surge to start a heavy motor.
Does the DELTA 3's higher surge actually matter?
Only for a motor whose startup spike lands between 3,000W and 3,600W, which the DELTA 3 starts and the C1000 Gen 2 doesn't. Anything that spikes below 3,000W starts on both. Look up the startup draw of your heaviest motor before letting this spec decide.
Which is quieter next to a CPAP?
Both are close to silent at a CPAP's draw, with a slight edge to the DELTA 3. Hands-on testing found its fans often stay off under 200W, while the C1000 Gen 2 sits near 35 dB in that range. The Anker only gets loud when fast charging or past 1,000W, and a CPAP night involves neither.
Can the DELTA 3 or C1000 Gen 2 run a 1,500W space heater?
Both can, since the C1000 Gen 2 is rated 2,000W continuous and the DELTA 3 1,800W, and reviewers confirmed the Anker carries one with headroom. Runtime is the catch: 870Wh usable at 1,500W lasts about half an hour on either. These take the chill off a room; they don't heat it through the night.
Will either one get me through an 8-hour power outage?
Not alone. A 1,645Wh blackout load leaves each unit 775Wh short, about 53% covered. Both accept expansion batteries, and the C1000 Gen 2's 600W solar input refills faster during the day than the DELTA 3's 500W.
Where to buy
EcoFlow DELTA 3
$599.00
$599.00 Β· direct from EcoFlow
down from $629 Β· 5% below usual
Last checked 28 days ago. Prices move β check before you buy.
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.