Head-to-head test
EcoFlow DELTA 3 Classic vs Anker SOLIX C1000
The Classic’s bigger surge figure is room a fridge never asks for. On the lines that get used every day, price, sockets, solar input and an expansion port, the Anker SOLIX C1000 is ahead.
Full profiles: EcoFlow DELTA 3 Classic → · Anker SOLIX C1000 →
Looking for a different matchup? EcoFlow DELTA 3 vs Anker SOLIX C1000 · EcoFlow DELTA 3 Classic vs Anker SOLIX C1000 Gen 2
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
Both of these are rated 1,800W continuous. The DELTA 3 Classic surges to 3,600W and the Anker SOLIX C1000 to 2,400W. Surge is the short burst an inverter can pass while a motor spins up, and a motor asks for two to three times its running draw in that first second. The fridge in our blackout scenario runs at 150W. Either ceiling starts it with room to spare.
So the surge line goes quiet, and the rest of the sheet leans one way. The C1000 costs $50 less. It has six AC outlets to the Classic’s three and a 12V car socket the Classic lacks. It takes 600W of solar to the Classic’s 500W, and it has a port for an Anker expansion battery. The Classic ships with the capacity it keeps.
If I were putting one of these in my cabin to carry the fridge and the router through a dark evening, I’d buy the C1000 and spend the difference on panel cable. The Classic’s case is narrower: a quicker rated switchover for a desktop with unsaved work, and a noise figure Anker never published.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
The Classic’s extra 1,200W of surge only matters for a motor that runs near its 1,800W rating, and a motor like that empties a 1,024Wh battery in well under an hour.
DELTA 3 Classic: 1,800W continuous, 3,600W surgeSOLIX C1000: 1,800W continuous, 2,400W surgethe 8-Hour Blackout scenario’s fridge peaks at 150W
Why it mattersIf a fridge, a freezer or a blender is on the list, either unit starts it. Buy on the lines you’ll use every day.
cost / lifetime kWh
Each gap is small on its own. Together they describe the box you’d rather own on an ordinary evening, and the expansion port is the one line that changes what the unit can become.
SOLIX C1000 price $449 vs DELTA 3 Classic $499cost per lifetime kWh: $0.14 (C1000) vs $0.16 (Classic)SOLIX C1000: six AC outlets, a 12V socket, 600W solar input and expansion battery support; DELTA 3 Classic: three AC outlets, no 12V socket, 500W solar input, no expansion
Why it mattersIf nothing on your list is a motor the size of a well pump, the C1000 is the better buy.
That isn’t a mark against the Classic. It is a reason the C1000’s spec sheet carries more weight today.
DELTA 3 Classic launched in March 2026; its coverage is an early snapshot from reviewersA0one SOLIX C1000 reviewer reports about 97% of original capacity after more than a yearB2
Why it mattersIf you’d rather buy the known quantity, that’s the C1000 too.
The specific dimensions that decide these two units — everything else is a tie.
What the Specs Don't Tell You
Selected because: The surge gap is the Classic’s biggest spec edge and the one a fridge never uses; expansion and sockets are the C1000’s.
The Classic surges to twice its 1,800W rating and the C1000 to about 1.3 times it. A motor draws two to three times its running watts as it starts, so the C1000’s 2,400W starts a fridge, a freezer or a blender with most of the ceiling unused. One reviewer put a small window AC on the Classic and it started fineA10. Another says the C1000 handles virtually any household appliance short of central AC and an electric dryerB4.
Switchover is the pause before UPS mode takes over when the grid drops. The Classic is rated no worse than 10ms and the C1000 no worse than 20ms. Routers ride through either. The fussiest desktop power supplies sit nearer the C1000’s line, so a PC with unsaved work is the one case where I’d let it count.
Lifetime Value
Selected because: The C1000 is cheaper to buy and costs less per lifetime kWh, by margins that are each small.
cost / lifetime kWh
The C1000 is the cheaper unit at $449 against $499. Spread over the life both batteries are rated for, it also costs less per kilowatt-hour delivered: $0.14 against $0.16.
Both carry five-year warranties and the same 3,000-cycle rating. Used every day, either one reaches that count in a little over eight years. The C1000 is the one that can still grow at that point, since it takes an expansion battery and the Classic doesn’t.
Your Life, Your Pick
Selected because: All six scenarios come back close to a tie on capacity.
The six scenarios barely separate these two. Both cover a CPAP night and a tailgate. Both fall short of an 8-hour blackout with a fridge, a camping weekend and a van-life day. The capacities are 32Wh apart, and no row on this page can feel that.
The remote workday is the closest row. It needs 910Wh, and both come up just short once the page’s flat 15% conversion allowance comes off the nameplate. Switch off one small device for part of the afternoon and either finishes.
Brand Trust
Selected because: The C1000 has a year of field data that the newer Classic can’t have yet.
The Classic launched in March 2026, so its record is an early snapshot from hands-on reviewersA0. The C1000 has at least one year-long report behind itB2.
Support is a soft spot for both makers. EcoFlow’s experiences are polarized, and it offers no parts or service out of warranty. Anker’s SOLIX support is reportedly trending down from the brand’s strong history, and firmware updates have removed features without warning. Buy either from a retailer with an easy return window.
Strengths & trade-offs
EcoFlow DELTA 3 Classic
Strengths
- +Lighter by 1.7 lb
Trade-offs
- –Sealed capacity — the SOLIX C1000 can add batteries to grow past 1,024Wh; this one can't.
Anker SOLIX C1000
Strengths
- +Costs $50 less
- +Larger battery capacity
- +Faster solar charging
Trade-offs
- –No 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 · 2 nights · 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 Classic comes up 1,230Wh short (about 41% covered), the SOLIX C1000 1,202Wh (43%). Treat this as partial cover — enough for the essentials in it, not the whole list.
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
Neither unit
The fridge, lights and devices need about 1,645Wh, and neither base unit holds that. The C1000 can add an Anker expansion battery to close the gap. The Classic is fixed at 1,024Wh, so with it you’d trim the list or recharge mid-outage.
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 uses about a third of either battery overnight, so both cover two nights before a recharge. The Classic publishes a noise figure and the C1000 doesn’t, which leaves the bedside question to reviewers’ ears.
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
Neither unit
This scenario needs 910Wh and neither unit quite finishes it. Both land within 5% of it — close enough that trimming one appliance, or accepting a shorter evening, gets you there on the day.
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
Either unit
A blender, a TV, a speaker and phones fit inside either unit with room left, and the blender’s motor starts well inside either surge ceiling. The Classic is 1.7 pounds lighter, which your arms won’t notice.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Neither unit
Neither unit covers this scenario's 4,685Wh: the DELTA 3 Classic comes up 3,815Wh short (about 19% covered), the SOLIX C1000 3,787Wh (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
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
Dead heat — 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 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 0–59.8hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–12hHigh-Draw Appliances
These reveal the real limitsscale 0–0.9h¹ 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 1, 2026
Verdict: the SOLIX C1000
Buy the SOLIX C1000. Both are rated 1,800W continuous, and the DELTA 3 Classic surges to 3,600W where the C1000 stops at 2,400W. That used to decide this page. It shouldn’t. A compressor draws two to three times its running watts for a second as it starts, so the 150W fridge in our blackout scenario starts with most of the C1000’s ceiling unused. Anything that needs the Classic’s extra 1,200W is a motor near the 1,800W rating, which a 1,024Wh battery can’t run for long anyway. On the lines you’ll use, the C1000 costs $50 less, has six AC outlets to three plus a 12V socket, takes 600W of solar to 500W, accepts an expansion battery, and has a year of field history behind itB2. Take the Classic if a rated ≤10ms switchover for a desktop, or a published noise figure, matters more to you than all of that.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of November 1, 2026. The links below open EcoFlow's and Anker's current prices.
$469.99 · direct from Anker
Last checked 28 days ago. Prices move — check before you buy.
or check the DELTA 3 Classic price$499.00 list
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated November 1, 2026
Black Friday · 26 days out
Prices to beat:DELTA 3 Classic $449SOLIX C1000 $449
The lowest we have recorded for each. We have never seen the SOLIX C1000 discounted, so any real cut on it would be a first.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews — see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, DELTA 3 Classic rates 4.1/5 (46th percentile of 27 Everyday-class units), and SOLIX C1000 rates 4.7/5 (81st percentile of 27 Everyday-class units).
How the class ranking is computed →Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
The Classic is fixed at 1,024Wh
The DELTA 3 Classic takes no expansion battery. The C1000 accepts Anker’s, which adds runtime on the same loads. At this size that buys more hours of a fridge and lights rather than whole-home backup.
3,600W against 2,400W, and why it doesn’t decide this
Both are rated 1,800W continuous. The Classic surges to twice that and the C1000 to about 1.3 times it. A motor draws two to three times its running watts as it starts, so a fridge, a freezer or a blender starts inside either ceiling. The Classic’s extra room only matters for a motor near 1,800W, which a battery this size can’t run for long.
Switchover rated ≤10ms against ≤20ms
Both have a UPS mode, and both figures are ratings, not measurements. Routers and most electronics ride through either. The fussiest desktop power supplies sit closer to the C1000’s line.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here.
One publishes a noise figure, one doesn’t
EcoFlow lists 30dB for the Classic, a spec-sheet rating rather than a measurement at every load. Anker publishes no figure for the C1000, which isn’t evidence that it’s louder.
Full record above — the Test Desk pick is the SOLIX C1000.
Check SOLIX C1000 price →or check the DELTA 3 Classic 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
Both units have similar long-term ownership costs ($0.16/kWh vs $0.14/kWh). The price difference is what you see on the sticker — neither is a hidden bargain or rip-off. One thing to know reading the table: both carry the same 3,000-cycle rating, so the lifetime rows are sticker price and capacity in disguise — the wear horizon is identical and decides nothing here.
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 brings the deeper ecosystem, the faster charging tech and the bigger community. Anker brings a smaller ecosystem and strong value per watt-hour.
Growth path
DELTA 3 Classic
FIXED CAPACITYFixed at 1,024Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
SOLIX C1000
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,056Wh.
Accepts up to 600W of solar. Suitable for a 1-2 panel setup.
Generous port selection supports complex multi-device setups.
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
The DELTA 3 Classic is sealed at 1,024Wh, which is fine if that covers you. The SOLIX C1000 starts at 1,056Wh and can grow beyond it with Anker expansion batteries — though at this size expansion means longer runtimes on the same loads, not a path to home backup. More hours, not more house.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3 Classic
Coverage of the Classic is early, from reviewers who tested it soon after its March 2026 launchA0. The charging stands out. One tester filled it from empty on a wall outlet in just under 55 minutesA1. The same tester expected loud fans at this price and found them quieter than thatA3. Another put a small window AC on it and reports the startup went fine, with a short runtime afterA10.
The app gets the warmest words. One reviewer called it among the best-designed on the marketA6. Another called the Storm Guard feature, which tops up the battery ahead of bad weather, genuinely usefulA12. The repeated complaint is the 500W solar cap, which two outlets flagged as low for a 2026 releaseA5A9.
“In our tests, the DELTA 3 Classic charged from empty to full plugged into a standard wall outlet in just shy of 55 minutes.”
Sources
thesolarlab.com · vantour.net · smartenergyedge.com · walmart.com
Anker SOLIX C1000
The C1000 has the thing the Classic can’t have yet, which is time. One reviewer ran theirs for over a year and reported about 97% of original capacity, plus a 30-day home-office UPS test through seven brief outages with no shutdownsB2. Others credit it with the basics: fast AC recharge, a practical size for a 1kWh unit, and an app worth openingB3. One says it handles virtually any household appliance except central AC and an electric dryerB4.
The complaint that keeps coming up is fan noise. Under fast charging or heavy output the fans spin up to about the level of a desktop computer working hard. Below roughly 500W reviewers call it nearly silentB1. Beside a CPAP that’s a non-event. Running a space heater in the next room, expect to hear it.
“One reviewer used their unit for over a year with zero issues and minimal battery degradation — about 97% of original capacity. In a 30-day home-office UPS test it handled 7 brief outages with no equipment shutdowns or data loss.”
Sources
outdoorgearlab.com · lifenhancer.com · rvoutfitting.com · outdoortechlab.com · wattsontheroof.com · technerdo.com · teqclub.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
- Multiple independent reviewers note the unit is quieter than expected for its price point, with low idle drain. [DELTA 3 Classic · 2 entries]
- The 500W solar input cap is flagged as a limiting factor by more than one review outlet, seen as low for a 2026-era release. [DELTA 3 Classic · 2 entries]
- Reviewers praise the app and Storm Guard/smart features as standout software elements. [DELTA 3 Classic · 2 entries]
- Fan noise under fast charging or heavy load is the consistent knock; otherwise strong reliability, fast recharge, and practical size earn broad praise. [SOLIX C1000 · 3 entries]
- A1
“In our tests, the DELTA 3 Classic charged from empty to full plugged into a standard wall outlet in just shy of 55 minutes.”
thesolarlab.com — EcoFlow DELTA 3 Classic Review: Cheap, Quiet & Useful? · unknown (post-launch 2026) · [positive]
- A3
“we expected the cooling fans to break that trend given the price point for this unit”
thesolarlab.com — EcoFlow DELTA 3 Classic Review: Cheap, Quiet & Useful? · unknown (post-launch 2026) · [positive]
- A5
“the screen only showed 500 W input”
vantour.net — EcoFlow Delta 3 Classic: Our review, test and promo code · 3 weeks ago (~June 2026) · [negative]
- A6
“it is clearly one of the best-designed apps on the market”
vantour.net — EcoFlow Delta 3 Classic: Our review, test and promo code · 3 weeks ago (~June 2026) · [positive]
- A9
“EcoFlow pushes the fast charging hard, but the DELTA 3 Classic is capped at 500W solar input”
smartenergyedge.com — EcoFlow DELTA 3 Classic Review: Better Than the DELTA 2? · 1 week ago (~July 2026) · [negative]
- A10
“The 1,800W inverter handles the startup surge of a small window AC unit just fine, but the runtime is short.”
smartenergyedge.com — EcoFlow DELTA 3 Classic Review: Better Than the DELTA 2? · 1 week ago (~July 2026) · [mixed]
- A12
“The Storm Guard auto-charge feature is smart and genuinely useful.”
smartenergyedge.com — EcoFlow DELTA 3 Classic Review: Better Than the DELTA 2? · 1 week ago (~July 2026) · [positive]
- B1
“Fan noise is the single most common complaint — the fans spin up audibly during fast charging or heavy output near the unit's limit, comparable to a desktop computer fan at speed. Under light loads (below ~500W) it's nearly silent.”
outdoorgearlab.com / lifenhancer.com — Anker SOLIX C1000 review · 2026 · [negative]
- B2
“One reviewer used their unit for over a year with zero issues and minimal battery degradation — about 97% of original capacity. In a 30-day home-office UPS test it handled 7 brief outages with no equipment shutdowns or data loss.”
rvoutfitting.com / outdoortechlab.com — Anker SOLIX C1000 long-term notes · 2026 · [positive]
- B3
“Nails the fundamentals: fast AC recharge, strong inverter performance for short bursts, practical size and weight for a 1kWh unit, and genuinely useful app monitoring.”
wattsontheroof.com / technerdo.com — Anker SOLIX C1000 review · 2026 · [positive]
- B4
“Handles virtually any household appliance except central AC and electric dryers; a popular 'sweet spot' 1kWh unit for RV and home backup.”
rvoutfitting.com / teqclub.com — Anker SOLIX C1000 review · 2026 · [positive]
Research compiled November 1, 2026.
Who Should Buy Which
Buy the DELTA 3 Classic if you…
- →A desktop with unsaved work will sit on it. Switchover is rated no worse than 10ms to the C1000’s 20ms.
- →It’s going beside a bed and you want a published noise figure to hold it to. EcoFlow lists 30dB, Anker lists nothing, and one reviewer found the Classic’s fans quieter than the price suggestedA3.
- →You want a well-reviewed app and a fast wall recharge: under an hour from empty in one testA1A6.
Buy the SOLIX C1000 if you…
- →Your loads are a fridge, lights, a router and phones. Any of them starts inside 2,400W of surge, and the C1000 costs $50 less.
- →You need more sockets or room to grow: six AC outlets to three, a 12V car socket, and expansion battery support.
- →You want a year of field history behind the purchaseB2, and fan noise under heavy load won’t bother youB1.
If neither fits
If the job is a full 8-hour blackout with the fridge on, neither base unit covers it alone. For that job look at the C1000 with an expansion battery, or at a larger station.
The Bottom Line
The surge gap is real and it doesn’t decide this. A fridge starts on either ceiling. What you’ll use every day is the price, the sockets, the solar input and the expansion port, and the C1000 wins all four.
Buy the C1000. Take the Classic only if a desktop with unsaved work, or a published noise figure, is the thing that matters most to you.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
EcoFlow DELTA 3 Classic vs Anker SOLIX C1000: which should I buy?
Buy the SOLIX C1000. It costs $50 less, has six AC outlets to the Classic’s three plus a 12V socket, takes 600W of solar to 500W, accepts an expansion battery, and has a year-plus reliability record. The Classic’s higher surge ceiling, 3,600W to 2,400W, is room a fridge or freezer never asks for. Buy the Classic if a quicker rated switchover or a published noise figure matters more to you.
Which is cheaper, the DELTA 3 Classic or the SOLIX C1000?
The SOLIX C1000, at $449 against the Classic’s $499. It also costs less per lifetime kWh: $0.14 against $0.16.
Which one can actually start a fridge or air conditioner?
Both. A compressor draws two to three times its running watts for a second as it starts, and both units surge well past that for any fridge, freezer or small window AC a battery this size can run for long. The Classic’s ceiling is 3,600W and the C1000’s 2,400W, so the Classic has more room, but it’s room a fridge never uses. If you’re unsure, check the startup draw of your heaviest motor against 2,400W.
Can the DELTA 3 Classic take an expansion battery?
No. The DELTA 3 Classic is fixed at 1,024Wh. The SOLIX C1000 accepts Anker expansion batteries, which add runtime on the same loads.
Is the Anker SOLIX C1000’s fan noise a real problem?
It’s the most common complaint reviewers raise about it. The fans spin up audibly, comparable to a desktop computer at speed, during fast charging or heavy output, and it’s reportedly near-silent under light loads. EcoFlow publishes a 30dB figure for the Classic and one reviewer found its fans quieter than the price suggested. Anker publishes no comparable number for the C1000.
Can either of these run a full 8-hour blackout?
Not alone. An 8-hour outage with a fridge, lights and devices needs roughly 1,645Wh, which is 189% of the Classic’s usable capacity and 183% of the C1000’s. The C1000 can add an expansion battery to cover it. The Classic cannot, so with it you need a shorter appliance list.
Related comparisons
Where to buy
EcoFlow DELTA 3 Classic
$499.00
$499.00 · direct from EcoFlow
Last checked 28 days ago. Prices move — check before you buy.
Anker SOLIX C1000Pick
$469.99
$469.99 · direct from Anker
Last checked 28 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.