Head-to-head test
EcoFlow DELTA 3 Classic vs Anker SOLIX C1000 Gen 2
Both hold exactly 1,024Wh and both carry five years of warranty. The C1000 Gen 2 spends its extra $31 on output, solar, outlets, expansion and cycle life. The DELTA 3 Classic keeps the lower price and the higher surge.
Full profiles: EcoFlow DELTA 3 Classic β Β· Anker SOLIX C1000 Gen 2 β
Looking for a different matchup? EcoFlow DELTA 3 vs Anker SOLIX C1000 Gen 2 Β· EcoFlow DELTA 3 vs Anker SOLIX C1000 Β· EcoFlow DELTA 3 Plus vs Anker SOLIX C1000 Gen 2
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
These two hold exactly the same amount of electricity, 1,024Wh each, and carry the same five-year warranty. Both are rated to take over from the grid in 10ms or less when the power drops, quick enough on paper for a desktop or a router to ride through. The price tags sit $31 apart.
The Anker spends that money on almost everything around the battery. It holds 2,000W of steady output to the EcoFlow's 1,800W. It takes more solar, has five AC outlets to three, and its pack is rated for a thousand more charge cycles. It also accepts expansion batteries, which the DELTA 3 Classic can't. Reviewers rate it the mid-size unit to beat this yearB4.
So why does the cheaper one win? For a box that sits by the door until the next outage, most of those extras never get used. The DELTA 3 Classic also has more surge, the short spike a fridge or pump pulls as its motor starts: 3,600W against 3,000W.
What the Numbers Reveal
Each conclusion stated first β the numbers behind it on one line, the full analysis below.
cost / lifetime kWh
You only collect on those extra cycles by using them. A backup box that sees a few outages a year never gets near either rating.
both units store 1,024Whthe DELTA 3 Classic is $499 and rated for 3,000 cycles; the C1000 Gen 2 is $530 and rated for 4,000the DELTA costs $0.16 per lifetime kWh, the C1000 $0.13
Why it mattersFor occasional backup, the DELTA's lower price is the saving you will see. For a pack cycled daily for years, the Anker is the better buy.
continuous output
A fridge, a pump or a saw jolts as it starts, and the DELTA gives that jolt 600W more headroom. Reviewers found its inverter starts a small window AC without trouble, though the runtime is shortA10. Once a load is running, the C1000 Gen 2's extra 200W is the margin. A 1,500W space heater fits inside both ratings, and reviewers say it leaves the Anker headroom to spareB3.
the DELTA 3 Classic surges to 3,600W, double its 1,800W continuous ratingthe C1000 Gen 2 surges to 3,000W on a higher 2,000W continuous ratingcompressor motors briefly pull 2-3x their rated watts at startup
Why it mattersBuy the DELTA for spiky motor startups. Buy the C1000 Gen 2 for steady loads that sit between 1,800W and 2,000W.
The specific dimensions that decide these two units β everything else is a tie.
Lifetime Value
Selected because: Same capacity and warranty, but the C1000 Gen 2's extra thousand cycles make it cheaper per lifetime kWh despite the higher price. This is the strongest case against the verdict.
cost / lifetime kWh
The C1000 Gen 2 is rated for 4,000 charge cycles to the DELTA's 3,000, about 11 years of daily use against 8.2. Run each to that rating and the Anker stores cheaper energy, $0.13 a kilowatt-hour to the DELTA's $0.16.
The DELTA's saving is cash in hand today. The Anker's extra cycles work more like a rebate. It pays out only if you cycle the pack daily past the point where the DELTA's rating runs out, which is more than eight years in. A backup box that sees a dozen outages a year never collects it.
What the Specs Don't Tell You
Selected because: Surge, expansion, warranty and cycle life all fire, and the split between surge and continuous output is the main spec story.
rated cycles
Of the four cards here, surge has the most to say. The DELTA 3 Classic surges to double its continuous rating, the C1000 Gen 2 to one and a half times. A window AC that jolts on startup leans DELTAA10. A load just above the DELTA's continuous limit leans Anker, though at that draw either battery is empty in under an hour.
Of the other three, two lean the Anker's way and one is a wash. The DELTA is sealed at 1,024Wh, while the C1000 Gen 2 takes expansion batteries. The C1000 Gen 2's pack is rated for a thousand more cycles. Both warranties run five years.
Your Life, Your Pick
Selected because: Identical 1,024Wh means every scenario ties, and that dead heat is what pushes the call to price.
The two never separate in the scenario table. The same 1,024Wh gives the same percentages, load for load. Both clear a CPAP night and a tailgate with room to spare. Neither covers a full blackout or a camping weekend without a solar top-up, or, on the Anker only, an expansion battery.
With runtime tied, price breaks it. If I were buying for the hall closet and the occasional winter outage, I'd take the DELTA 3 Classic.
Brand Trust
Selected because: Cross-brand pair: EcoFlow's deeper ecosystem and app against Anker's value and softening SOLIX support.
EcoFlow brings the biggest ecosystem in portable power, a 4.6/5 iOS rating and the fast-charging tech the brand built its name on. Support experiences run from excellent to frustrating, and there is no out-of-warranty service.
Anker brings parent-brand trust from the charger aisle and InfiniPower cells built for that longer cycle life. The worry is drift. SOLIX support has slipped toward generic automated replies and awkward returns for heavy units, and firmware updates have removed features without warning. Neither badge settles this one.
Strengths & trade-offs
EcoFlow DELTA 3 Classic
Strengths
- +Costs $31 less
Trade-offs
- βSealed capacity β the SOLIX C1000 Gen 2 can add batteries to grow past 1,024Wh; this one can't.
- 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 1.8 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
A two-night campout with a box fan, a CPAP, lights and phone charging comes to about 2,100Wh, more than double what either unit can usably give. Plan on a solar panel to top up by day. Only the Anker can add an expansion battery. The cheaper EcoFlow leaves more budget for the panel.
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
A fridge, some lights and a router across eight hours draw about 1,645Wh, and both cover a bit over half of it. If your outages run this long, size up, or add an expansion battery to the Anker.
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
An overnight CPAP draws about 320Wh, so both cover the night twice over. Their published noise figures are two makers' own ratings, each measured its own way. Call it a tie and settle it on price, where the EcoFlow is $31 ahead.
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, a monitor and a router for a full workday come to about 910Wh. After the flat 15% allowance, that is just past what either unit can give, and both miss by the same 40Wh. A small panel or a lunchtime top-up closes the gap on either one.
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
A TV, a speaker, a blender and phone charges over an afternoon draw about 670Wh, comfortably inside both. A 400W blender barely tests either unit's surge. The Anker is the lighter one to carry from the car.
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
A full van-life day draws around 4,685Wh, more than five times what either unit can give. A single 1kWh box is the wrong tool. Build up from a larger expandable system with real solar, and treat either of these as a spare battery at most.
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 25, 2026
Verdict: the EcoFlow DELTA 3 Classic
Take the DELTA 3 Classic and keep the $31. Both hold 1,024Wh, carry a 5-year warranty and are rated to switch over in 10ms or less. Nearly everything else that differs favours the Anker on paper: output, solar, cycles and the expansion the sealed DELTA can't take. Over its rated life it is the cheaper energy too. Reviewers rate it the mid-size unit to beatB4, and it earns its premium if you will lean on those extras. For a wall-charged box that waits for the next outage, the EcoFlow does the same job for less, with 3,600W of surge against 3,000W.
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 October 25, 2026. The links below open EcoFlow's and Anker's current prices.
$499.00 Β· direct from EcoFlow
Last checked 28 days ago. Prices move β check before you buy.
or check the SOLIX C1000 Gen 2 price$499.99 list
Written by Ian Schneider, Solar & Off-Grid Tester Β· Station Arena Test Desk Β· Updated October 25, 2026
Black Friday Β· 26 days out
Prices to beat:DELTA 3 Classic $449SOLIX 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 Classic rates 4.1/5 (46th 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.
DELTA 3 Classic: Fixed Capacity
The DELTA 3 Classic is sealed at 1,024Wh β the same base capacity as the SOLIX C1000 Gen 2. By contrast the SOLIX C1000 Gen 2 can add expansion batteries, so the SOLIX C1000 Gen 2 pulls ahead only once you buy an expansion battery.
Surge Room Against Sustained Muscle
The DELTA 3 Classic surges to 3,600W, the headroom a fridge compressor or pump wants for the jolt at startup. The C1000 Gen 2 surges to 3,000W but holds a higher 2,000W continuously. Ask whether your hardest load jolts at startup or pulls hard the whole time.
Same Five Years
Both units carry a 5-year warranty, so the coverage window is a wash. The DELTA's lower price makes each covered year a little cheaper.
The Anker's One Clear Longevity Win
4,000 cycles is roughly 11 years of daily use, against about 8 for the DELTA's 3,000. If you will cycle the pack every day, that is the strongest single reason to pay up for the Anker. Cycle it now and then, as most backup buyers do, and both will likely outlast the gadgets plugged into them.
Full record above β the Test Desk pick is the DELTA 3 Classic.
Check DELTA 3 Classic price βor check the SOLIX C1000 Gen 2 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
The DELTA 3 Classic is cheaper to buy, but the SOLIX C1000 Gen 2 is cheaper to own. At $0.13/kWh over its lifetime vs $0.16/kWh, the SOLIX C1000 Gen 2's higher cycle life and capacity make each dollar go further over the years.
Brand trust
EcoFlow
Ecosystem
The deepest bench in portable power, with a dozen-plus models across DELTA Pro, DELTA 3 and RIVER 3, plus solar panels and smart-home gear.
Support
US-based phone, email and chat, but experiences are polarized. Some buyers get hassle-free prepaid-label replacements, and others report long waits. Buying from Costco or Amazon gives you a stronger return backstop.
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
X-Stream fast charging, the widest product range in the category, and the fastest innovation cadence.
Worth knowing
There is no out-of-warranty service, so buy from a seller with an easy return window.
Anker
Ecosystem
Seven or eight SOLIX stations across the compact C-series and flagship F-series, plus the X1 home system. A smaller shelf than EcoFlow's.
Support
Rides on Anker's consumer-electronics reputation and a history of no-hassle replacements. SOLIX support specifically is trending toward generic automated answers and clunky returns for heavy units.
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 the charger aisle, InfiniPower cells built for long cycle life, and strong value per watt-hour on its mid-size and larger units, though the DELTA undercuts it here.
Worth knowing
Firmware updates have removed features without warning. Screenshot the feature list you are buying.
Analyst note
EcoFlow sells the deeper catalogue, the more widely reviewed app and its X-Stream fast-charging pedigree, with support that swings from excellent to frustrating. Anker sells parent-brand familiarity and long-cycle value, with service drifting from its old standard. The DELTA wins on price and the C1000 Gen 2 on hardware, so buy from a seller with a painless return window.
Growth path
DELTA 3 Classic
FIXED CAPACITYFixed at 1,024Wh, with no expansion β 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 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
The DELTA 3 Classic is sealed at 1,024Wh, which is fine if that covers you. The SOLIX C1000 Gen 2 starts at 1,024Wh and can grow beyond it with Anker expansion batteries β 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 β every claim cited to its source below.
EcoFlow DELTA 3 Classic
The DELTA 3 Classic is new. It came out in March 2026, so there is almost no long-term ownership record yet, and what follows is an early snapshot from reviewersA0. They report a full wall charge in just under 55 minutesA1, idle draw around 17WA2, and fans quieter than they expected at this priceA3. One reviewer calls the app one of the best-designed on the marketA6, and the Storm Guard auto-charge feature gets a nod as genuinely usefulA12.
The repeated knock is solar. More than one outlet flags the 500W input cap as low for a 2026 unitA5A9. For a box that charges from the wall, that hardly comes up. Reviewers also note it starts a small window AC, but the runtime is shortA10.
βIn our tests, the DELTA 3 Classic charged from empty to full plugged into a standard wall outlet in just shy of 55 minutes.β
Sources
thesolarlab.com Β· vantour.net Β· smartenergyedge.com Β· walmart.com
Anker SOLIX C1000 Gen 2
The C1000 Gen 2 has the deeper file of reviews, and it's a warm one. Reviewers widely rate it the mid-size unit to beat in 2026, a refined and powerful update to a popular 1kWh platformB4. HyperFlash charging refills it in about 49 minutesB1. Its 2,000W output is enough to run a 1,500W space heater with headroom to spareB3.
The one steady complaint is noise, and at least it's predictable. Under 200W it is near-silent. During fast charging or heavy output the fans ramp up, reaching around 55 dB past 1,000WB2.
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
- Multiple independent reviewers note the unit is quieter than expected for its price point, with low idle drain. [DELTA 3 Classic Β· 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 Β· 2 entries]
- Reviewers praise the app and Storm Guard/smart features as standout software elements. [DELTA 3 Classic Β· 2 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
βIn our tests, the DELTA 3 Classic charged from empty to full plugged into a standard wall outlet in just shy of 55 minutes.β
thesolarlab.com β EcoFlow DELTA 3 Classic Review: Cheap, Quiet & Useful? Β· unknown (post-launch 2026) Β· [positive]
- A2
βWe measured the idle draw to be roughly 17W per hour.β
thesolarlab.com β EcoFlow DELTA 3 Classic Review: Cheap, Quiet & Useful? Β· unknown (post-launch 2026) Β· [positive]
- A3
βwe expected the cooling fans to break that trend given the price point for this unitβ
thesolarlab.com β EcoFlow DELTA 3 Classic Review: Cheap, Quiet & Useful? Β· unknown (post-launch 2026) Β· [positive]
- A5
βthe screen only showed 500 W inputβ
vantour.net β EcoFlow Delta 3 Classic: Our review, test and promo code Β· 3 weeks ago (~June 2026) Β· [negative]
- A6
βit is clearly one of the best-designed apps on the marketβ
vantour.net β EcoFlow Delta 3 Classic: Our review, test and promo code Β· 3 weeks ago (~June 2026) Β· [positive]
- A9
βEcoFlow pushes the fast charging hard, but the DELTA 3 Classic is capped at 500W solar inputβ
smartenergyedge.com β EcoFlow DELTA 3 Classic Review: Better Than the DELTA 2? Β· 1 week ago (~July 2026) Β· [negative]
- A10
βThe 1,800W inverter handles the startup surge of a small window AC unit just fine, but the runtime is short.β
smartenergyedge.com β EcoFlow DELTA 3 Classic Review: Better Than the DELTA 2? Β· 1 week ago (~July 2026) Β· [mixed]
- A12
βThe Storm Guard auto-charge feature is smart and genuinely useful.β
smartenergyedge.com β EcoFlow DELTA 3 Classic Review: Better Than the DELTA 2? Β· 1 week ago (~July 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 25, 2026.
Who Should Buy Which
Buy the DELTA 3 Classic if youβ¦
- βYou want 1,024Wh of backup for less money. $499 buys the same capacity, warranty and 10ms-or-less switchover rating as the Anker.
- βYour hard loads spike at startup, like a fridge, a pump or a power tool. The 3,600W surge gives the motor more room to kick on than the C1000 Gen 2's 3,000W.
- βIt will live in a bedroom or office on light loads, where reviewers found the DELTA's fans quieter than expected and its idle draw lowA2A3.
Buy the SOLIX C1000 Gen 2 if youβ¦
- βYou will run loads between 1,800W and 2,000W, more than the DELTA's inverter holds.
- βYou charge from solar a lot and want the 600W input. The DELTA's 500W cap is the gripe more than one reviewer raisedA5A9.
- βYou want the longer-lived pack and the lighter body: 4,000 cycles, about 11 years of daily use, and 1.8 lbs less to carry.
- βYou need more places to plug in. The C1000 Gen 2 has five AC outlets to the Classic's three, a 12V car outlet the Classic lacks, and 140W USB-C to 100W.
If neither fits
Neither covers a full 8-hour blackout or a two-night camping weekend on its own. For a whole outage from one unit, step up to 2,000Wh or more. Or buy the Anker and plan on an expansion battery from day one, since the sealed DELTA can't take one.
The Bottom Line
Take the DELTA 3 Classic and keep the $31. The Anker is the better-equipped box, and over its rated life the cheaper one per kilowatt-hour. Most of what the extra money buys is output, solar, cycles and expansion that a backup buyer rarely pushes.
If you will lean on those extras, the premium buys something you'll use every week. If this is a quiet box waiting out the next outage, keep the money.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
EcoFlow DELTA 3 Classic vs Anker SOLIX C1000 Gen 2: which should I buy?
The DELTA 3 Classic for most buyers. It stores the same 1,024Wh and has the same 5-year warranty and 10ms switchover rating for $31 less, and it surges higher at 3,600W for stubborn motor loads. Choose the C1000 Gen 2 if you will genuinely use its extra 200W of continuous output, its 600W solar input, its expansion-battery support, or its longer-lived 4,000-cycle battery.
Why does the Anker C1000 Gen 2 cost $31 more for the same capacity?
The premium buys hardware around the battery, since the battery itself is the same size: 2,000W of continuous output to the DELTA's 1,800, 600W of solar to its 500, a 4,000-cycle cell to its 3,000, expansion-battery support, a faster 140W USB-C port, and 1.8 fewer pounds. Those are real upgrades. But the capacity, warranty and UPS switchover rating match, so if you will not push the extras, the DELTA buys the same capacity for less.
Which one is quieter?
There is no like-for-like test to settle it. The DELTA 3 Classic's 30 dBA and the C1000 Gen 2's 35dB are each their own maker's rating, measured its own way. Reviewers found the DELTA's fans quieter than they expected at its price. The C1000 is near-silent under 200W but its fans climb to about 55 dB past 1,000W, and no one has published a heavy-load figure for the DELTA. At light loads at a desk or bedside, expect both to stay unobtrusive.
Which is better for solar charging?
The C1000 Gen 2, modestly. It accepts 600W of solar input to the DELTA's 500W, which reviewers flag as low for a 2026 unit. For a 1kWh battery the real-world gap is small, but if solar is your main charging source, the Anker is the one built for it.
Do they have the same battery life?
No. The C1000 Gen 2 is rated for 4,000 charge cycles, about 11 years of daily use, against the DELTA's 3,000 cycles and roughly 8 years. The Anker lasts longer, and even at $31 more up front it works out cheaper per lifetime kilowatt-hour: $0.13 to the DELTA's $0.16.
Related comparisons
Related buying guides
Where to buy
EcoFlow DELTA 3 ClassicPick
$499.00
$499.00 Β· direct from EcoFlow
Last checked 28 days ago. Prices move β check before you buy.
Anker SOLIX C1000 Gen 2
$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.