Head-to-head test
EcoFlow DELTA 2 vs Anker SOLIX C2000 Gen 2
The DELTA 2 has left EcoFlow's store, so this page is for owners and used shoppers wondering whether Anker's 2 kWh SOLIX C2000 Gen 2 is the step up. Twice the battery, and 14.7 lb more to lift.
Full profiles: EcoFlow DELTA 2 β Β· Anker SOLIX C2000 Gen 2 β
Looking for a different matchup? EcoFlow DELTA 2 Max vs Anker SOLIX C2000 Gen 2 Β· EcoFlow DELTA 2 vs Anker SOLIX S2000
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
EcoFlow has stopped selling the DELTA 2. Its store page now forwards to the DELTA 3. So you probably own one or have found one used, and you're wondering whether Anker's SOLIX C2000 Gen 2 is the upgrade.
It holds exactly twice as much, 2,048Wh to the DELTA 2's 1,024Wh. Both lose a slice of that turning battery power into wall power, so our math counts 85% of each as usable.
My cabin in Truckee runs on its own solar, so the grid going down isn't my problem. Picture someone in town on the night a winter storm takes it out until morning. Our eight-hour blackout list needs 1,645Wh. The Anker has about 1,741Wh to give and gets through it with a little left. The DELTA 2 has about 870Wh and runs dry about halfway.
The DELTA 2's best argument is weight, 27 lb to the Anker's 41.7. If my battery mostly rode in the truck to a trailhead, I'd keep the lighter one.
What the Numbers Reveal
Each conclusion stated first β the numbers behind it on one line, the full analysis below.
The DELTA 2 stops 775Wh short. Skipping a phone charge won't cover that. The Anker finishes with 96Wh left, which is tight.
Usable capacity: DELTA 2 about 870Wh, SOLIX C2000 Gen 2 about 1,741Wh8-Hour Blackout needs 1,645Wh
Why it mattersIf the outage is why you're shopping, the Anker answers it and the DELTA 2 doesn't.
The noise arrives when the unit works hard. Charging the DELTA 2 at full speed has been compared to a gaming laptopA2. The Anker gets called a quiet whirr even near full powerB1. The two makers' decibel ratings don't compare, so the reviews are what's left.
Reviewers report the DELTA 2's fans start above about 120WA1Reviewers describe the C2000 Gen 2's fans as a subdued whirr even under high loadB1
Why it mattersIf the battery will fast-charge in a room where someone sleeps, the review record favours the Anker. In a garage it changes nothing.
The specific dimensions that decide these two units β everything else is a tie.
Your Life, Your Pick
Selected because: Two of the six loads split these units: the blackout and the workday.
Neither unit finishes a camping weekend or a day of van life, though the Anker covers about twice as much of each. Both cover a CPAP night and a tailgate with room left.
The workday and the blackout are where 870Wh runs out and 1,741Wh keeps going. An owner who works off a DELTA 2 now and then can manage a 40Wh gap. Five days a week, I'd want the bigger tank so the day never needs managing.
Lifetime Value
Selected because: The DELTA 2 has no price now, so this section counts energy instead.
A cycle is one full drain and refill. The Anker is rated for more of them on a pack twice the size, so it adds up to 8,192 kWh over its rated life against 3,072 kWh for the DELTA 2. Each kilowatt-hour from the Anker works out to $0.12 at today's price.
Cycled every weekend, the DELTA 2 has decades of rated life in it, and so does the Anker. If you own a DELTA 2 in good health, the battery is not the reason to replace it.
Portability & Form Factor
Selected because: 14.7 lb separates them, and weight is the DELTA 2's best argument.
weight
One of these comes out of the trunk in one hand. The DELTA 2 is 27 lb, about a full toolbox. The Anker is 41.7 lb, which is two hands and a moment to plan your footing.
Game day needs 670Wh and both clear it, so there the Anker's extra battery rides along unused. For carry jobs that fit inside 870Wh, a DELTA 2 you already own is still the right tool.
What the Specs Don't Tell You
Selected because: Four cards fire, and the warranties match at five years each.
rated cycles
Switchover is the gap between the wall going dead and the battery taking over. Routers ride through either rating, and the fussiest desktop power supplies sit near the DELTA 2's 20ms line. The noise card compares two makers' own ratings, so the owner section says more.
Strengths & trade-offs
EcoFlow DELTA 2
Strengths
- +Lighter by 14.7 lb
Trade-offs
- βWeaker inverter (-600W) limits appliance compatibility.
- βShorter-lived battery β rated for 3,000 charge cycles vs the SOLIX C2000 Gen 2's 4,000, so it wears out sooner.
Anker SOLIX C2000 Gen 2
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles β much longer battery lifespan
Trade-offs
- βSignificantly heavier (+14.7 lbs), making it harder to move.
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 C2000 Gen 2 359Wh (83%). 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
SOLIX C2000 Gen 2
The night needs 1,645Wh. The DELTA 2 has 870Wh usable and stops 775Wh short. The C2000 Gen 2 finishes with 96Wh left.
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 draws about 40W, so eight hours is 320Wh and both clear it at least twice over. Capacity doesn't decide this row.
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
SOLIX C2000 Gen 2
The DELTA 2 misses this by 40Wh. It needs 910Wh and has 870Wh usable, though its nameplate 1,024Wh would clear it. Shut the monitor off an hour and a half early and it finishes. The C2000 Gen 2 ends the day with 831Wh to spare.
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
SOLIX C2000 Gen 2
Both cover game day. The Anker uses 38% of what it has and the DELTA 2 77%. Reserve you never touch is worth little in a parking lot. The 14.7 lb you carry from the car goes the other way.
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 C2000 Gen 2 2,944Wh (37%). 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
For this load: SOLIX C2000 Gen 2 runs 8.5h vs 4.2h.
$999.99 list Β· direct from Anker
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 0β116.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0β23.2hHigh-Draw Appliances
These reveal the real limitsscale 0β1.7hΒΉ 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 SOLIX C2000 Gen 2, on Power Score margin
EcoFlow no longer sells the DELTA 2 and points its shoppers to the DELTA 3, so the SOLIX C2000 Gen 2 is the only one of these two you can buy new. It would earn the pick anyway. It finishes our eight-hour blackout, which needs 1,645Wh. The DELTA 2 has about 870Wh to give. Confidence stops at 7 because the DELTA 2 is 14.7 lb lighter, and a CPAP night or a tailgate fits in either.
Today the SOLIX C2000 Gen 2 is $899.99, $100 under its typical $999.99. 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 Anker's current price.
$899.99 Β· direct from Anker
down from $1,000 Β· 10% 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 October 25, 2026
Black Friday Β· 26 days out
Price to beat:SOLIX C2000 Gen 2 $600
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
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 C2000 Gen 2 rates 4.2/5 (56th percentile of 28 Large-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.
Two Makers, Two Yardsticks
EcoFlow rates the DELTA 2 at 50dB and Anker rates the C2000 Gen 2 at 30dB. Each maker measures its own way, so the two numbers don't compare.
β€10ms vs β€20ms
The C2000 Gen 2 is rated to switch to battery in no more than 10ms, the DELTA 2 in no more than 20ms. A router and a modem ride through either. A desktop with a fussy power supply is where the faster rating helps.
Five Years Each
Both carry a five-year warranty.
Both Outlive Their Warranties
4,000 cycles against 3,000. Even one full cycle a day puts them at 11 years and 8.2. A pack that reaches its rating still holds about 80% of what it did new.
Full record above β the Test Desk pick is the SOLIX C2000 Gen 2.
Check SOLIX C2000 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 C2000 Gen 2 works out at $0.12/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 C2000 Gen 2 about 8,192 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
EcoFlow runs the deepest catalogue in portable power, 12 to 15 models plus panels and home hardware. Support is the uneven part of its record. Some owners get prepaid-label replacements and others report long waits or refurbished units.
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
Anker brings strong consumer-electronics brand trust and a smaller power-station lineup, seven or eight SOLIX stations. Recent reports say its once excellent support is slipping, and firmware updates have removed features without warning.
Analyst note
EcoFlow gives you a bigger catalogue and support that varies. Anker gives you a strong parent brand and support that recent reports say is sliding. Neither should decide this one.
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 C2000 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 2,048Wh.
Accepts up to 800W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are Anker-specific. You're investing in the Anker ecosystem.
Realistic full solar rechargeat 70% of rated panel output 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 C2000 Gen 2: it starts at 2,048Wh 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 C2000 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
Our research found months of field reports, and they agree: a reliable unit with a loud fanA0. Reviewers say the fans come on above 120W and run at roughly 48 to 55 dB near full load. Running medical gear over 120W in a bedroom means living with that or running a cord out of the roomA1. The app lets you slow a fast charge to quiet itA2.
One reviewer put it through six months of outages, camping trips and home-office days and praised its fast charging, its LFP battery and its expansion pathA3. LFP is lithium iron phosphate, a chemistry chosen for long life. EcoFlow has said it plans a firmware fix for the fansA4.
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 C2000 Gen 2
The C2000 Gen 2's record is consistent but young. Our research found strong hands-on review coverage with few criticisms, and no long-term owner reports yetB0. Reviewers keep coming back to how little it asks of you. Turn it on, plug in, goB2. They also found the app's monitoring over Bluetooth or Wi-Fi usefulB3.
On noise, one review describes the fans as a subdued whirr that only occasionally reaches about 35 dB at a metre under high loadB1. The Gen 2 is also much lighter than the original C2000B5.
βEven at full power it's far quieter than any other powerful Anker station tested β the fans never rise above a subdued, easily-backgrounded whirr, working largely silently and only occasionally reaching a pleasantly quiet ~35 dB at 1 m under high load.β
Sources
notebookcheck.net Β· thesolarlab.com Β· trustedreviews.com Β· androidguys.com
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Fan noise under moderate-to-high load is the dominant, repeatedly-cited complaint; the fan spins up above ~120W. [DELTA 2 Β· 3 entries]
- Reviewers consistently praise quiet operation, fast charging, premium build, and no-fuss plug-and-play simplicity. [SOLIX C2000 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
βEven at full power it's far quieter than any other powerful Anker station tested β the fans never rise above a subdued, easily-backgrounded whirr, working largely silently and only occasionally reaching a pleasantly quiet ~35 dB at 1 m under high load.β
notebookcheck.net / thesolarlab.com β Anker SOLIX C2000 Gen 2 review Β· 2026 Β· [positive]
- B2
βReally simple to use β no need to download firmware or deal with weird voltage drops; you just turn it on, plug in, and go. Rapid charging and premium build.β
trustedreviews.com / thesolarlab.com β Anker SOLIX C2000 Gen 2 review Β· 2026 Β· [positive]
- B3
βThe Anker Solix app is a good way to monitor the station during charging and use over Bluetooth or Wi-Fi; reviewers appreciated the monitoring functionality.β
androidguys.com β Anker SOLIX C2000 Gen 2 review Β· 2026 Β· [positive]
- B5
βSubstantially lighter than its predecessor β the Gen 2 shed a large amount of weight versus the original C2000, making it notably easier to carry for its capacity.β
notebookcheck.net β '11.6 kg lighter than its predecessor' review Β· 2026 Β· [positive]
Research compiled October 25, 2026.
What Owners Actually Report
Drawn from 163 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 C2000 Gen 2
15 claims from 8 comments Β· 11 from owners Β· 4 with figures
- Expandability
- 2 Β· 0% negative
- Size & weight
- 1 Β· 0% negative
- Price & value
- 3 Β· 0% negative
- Idle drain
- 2 Β· 0% negative
- App & firmware
- 1 Β· 0% negative
What owners complain about
Says the 800W max claim is limited by a 60V, 17A window, so real peak input is well under the rating.
Solar input2 agreedsource β
What owners praise
C2000 weighs only 42 pounds and the fan is silent.
Size & weightmeasuredowner9 agreedsource β
2400W inverter and 4kWh of storage with the expansion battery.
Expandabilitymeasuredowner9 agreedsource β
Has all the time-of-use features needed for home use.
App & firmwareowner9 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¦
- βYou already own a DELTA 2 and your worst day fits inside the 870Wh it can give. Nothing here is a reason to replace it.
- βYou carry it more than you plug it in. At 27 lb against 41.7 lb, it's the one you grab without thinking.
- βYou've found a used one in good health for a tailgate or a CPAP night. Both fit inside it with room to spare.
Buy the SOLIX C2000 Gen 2 if youβ¦
- βThe outage is why you're shopping. An eight-hour blackout needs 1,645Wh, and the DELTA 2 finishes 775Wh short.
- βYou work off it five days a week. A full remote workday needs 910Wh, 40Wh past what the DELTA 2 has to give. The Anker does it with 831Wh left.
- βYou want the bigger inverter, more solar input and the longer-rated battery.
If neither fits
If the real job is a camping weekend at 2,100Wh or van life at 4,685Wh, neither base unit covers it. Buying the bigger of two that both fall short is how people end up resenting a battery. Go up a size class, or plan from day one on an expansion battery.
The Bottom Line
Buy the C2000 Gen 2 if an outage is anywhere in your reasoning. It finishes the eight-hour night and the DELTA 2 doesn't. The extra solar input and the longer-rated battery come along with that.
Keep the DELTA 2 if you own one and the outage isn't the job. It's lighter, it covers a CPAP night and a tailgate, and it takes an expansion battery.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the Anker SOLIX C2000 Gen 2 a good upgrade from the EcoFlow DELTA 2?
Only if you need more capacity. The C2000 Gen 2 holds 2,048Wh to the DELTA 2's 1,024Wh and takes 800W of solar input to 500W. It is also 14.7 lb heavier. If your loads already fit inside the DELTA 2, the upgrade buys capacity you won't use. The DELTA 2 is no longer sold new.
Can the EcoFlow DELTA 2 get me through an 8-hour power outage?
Not the one we model, which needs 1,645Wh. The DELTA 2 has about 870Wh usable after conversion losses, so it comes up 775Wh short. Its 1,800W inverter and 2,700W surge can start every load in that scenario. The C2000 Gen 2 finishes the same night with 96Wh to spare.
Which one is quieter for a bedroom or CPAP?
Both cover a CPAP night at least twice over: about 40W for eight hours, or 320Wh. Reviewers put the DELTA 2's fan trigger above roughly 120W, which is well above a CPAP. The makers' published decibel ratings are measured their own ways and are not a like-for-like comparison. Reviewers describe the Anker as quiet even under high load.
How long will each one actually last?
The DELTA 2 is rated for 3,000 cycles and the C2000 Gen 2 for 4,000. That works out to 3,072 kWh and 8,192 kWh of energy over their rated lives. Both carry five-year warranties. Cycled every weekend, both have decades of rated life.
Can I add more capacity to either one later?
Both accept expansion batteries. The DELTA 2 is no longer sold, so check that EcoFlow's matching battery is still available before you plan on one. The Anker takes 800W of solar against the DELTA 2's 500W, so a bigger bank on the Anker has a bigger pipe to refill through.
Related comparisons
Where to buy
EcoFlow DELTA 2
No longer sold
Anker SOLIX C2000 Gen 2Pick
$899.99
$899.99 Β· direct from Anker
down from $1,000 Β· 10% below usual
Last checked 28 days ago. Prices move β check before you buy.
Prices may vary by retailer and are subject to change.