Head-to-head test
EcoFlow DELTA 3800 Gen4 vs Anker SOLIX C2000 Gen 2One of Its Add-On Batteries Matches the Whole C2000. Need That?
Both of these grow, but the EcoFlow starts 1,715 Wh ahead and fills from 2,000 W of solar against 800 W. I'd buy it as the first piece of a home backup system, and the C2000 Gen 2 for anything that leaves the house.
Black Friday · 23 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.
Full profiles: EcoFlow DELTA 3800 Gen4 → · Anker SOLIX C2000 Gen 2 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunner’s take
Whole-Home Backup Tester
I'd treat the DELTA 4 (3800) as the first piece of a home system.
It holds 3,763 Wh against the SOLIX C2000 Gen 2's 2,048 Wh and runs 3,600 W against 2,400 W. Then it takes up to two extra batteries, for 4 to 12 kWh in all by EcoFlow's figureA6.
The add-on batteries are where this comparison gets a little funny.
One of the two EcoFlow lists, the DELTA 3 Max Plus extra battery, holds 2,048 WhA6. That's the whole C2000 Gen 2, as a bolt-on. The Anker grows too, through its own expansion batteries, but it starts 1,715 Wh behind and fills from 800 W of solar against 2,000 W.
The price of a system is a box you don't take far.
The DELTA 4 (3800) costs $1,199 more, weighs 67.5 lb against 41.7 lb, and has no car socketA3. EcoFlow ships it in late NovemberA10. If this box is going in a car, the C2000 Gen 2 is the better buy.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
Growth doesn't split this pair on whether. It splits on where each one starts and how far EcoFlow says it goes. A C2000 Gen 2 owner who later wants a house's worth of storage is building on a base 1,715 Wh smaller, and EcoFlow quotes a ceiling of 12 kWh for the DELTA 4 (3800)A6.
DELTA 4 (3800): 3,763 Wh, up to two extra batteries, 4 to 12 kWh in allA6One compatible battery, the DELTA 3 Max Plus extra battery, holds 2,048 WhA6SOLIX C2000 Gen 2: 2,048 Wh, takes Anker expansion batteries
Why it mattersIf you can already picture a second battery, start on the EcoFlow.
solar input
A battery bank is only as useful as what refills it. Grow the C2000 Gen 2 and the same 800 W has more battery to fill each day. Grow the DELTA 4 (3800) and two strings of panels, one per input, keep feeding it.
DELTA 4 (3800): two solar inputs, 1,000 W each, 2,000 W total, 11 to 60 VA5SOLIX C2000 Gen 2: 800 W of solar inputBoth take extra batteries
Why it mattersIf the system will run on solar, the EcoFlow is the one whose input keeps up with the bank.
cost / lifetime kWh
That only lands if it works every day, draining into the house at night and refilling from panels. A box that waits at full charge for two outages a year never gets near 4,000 cycles, so the per-kWh edge stays on paper.
6,000 rated cycles on 3,763 Wh against 4,000 on 2,048 Wh22,578 kWh over the rated life against 8,192 kWh$0.10 against $0.12 per lifetime kWh
Why it mattersIf it will cycle daily on solar, compare cost per lifetime kWh, not the sticker.
The specific dimensions that decide these two units — everything else is a tie.
Growth Path
Selected because: Both take extra batteries, but one starts at 3,763 Wh on 2,000 W of solar and the other at 2,048 Wh on 800 W.
solar input
Both take extra batteries, so the question is where each one starts. The DELTA 4 (3800) begins at 3,763 Wh and adds up to two batteries through EcoFlow's expansion adapter, either the DELTA Pro 3 battery or the DELTA 3 Max Plus batteryA6. The C2000 Gen 2 begins at 2,048 Wh and takes Anker's own expansion batteries.
What fills the bank matters as much as the bank. The EcoFlow has two solar inputs at 1,000 W eachA5. The Anker has 800 W, and every battery you add to it shares that same 800 W. For a system fed from a roof or a ground mount, I'd start on the EcoFlow.
Your Life, Your Pick
Selected because: An 8-hour blackout leaves 1,554 Wh on the DELTA 4 (3800) and 96 Wh on the C2000 Gen 2.
Through a long outage, the gap shows at breakfast. Both finish the 8-hour blackout. The C2000 Gen 2 reaches morning at 94% used, and the DELTA 4 (3800) at 51%, with 94% of a second night still in it. On a 2,100 Wh camping weekend the Anker runs 359 Wh short and the EcoFlow has 1,099 Wh to spare.
On light loads, the EcoFlow's size mostly sits idle. A CPAP night uses 10% of it and 18% of the Anker, and a remote workday 28% against 52%. Van Life Daily beats both, at 1,486 Wh short and 2,944 Wh short, and since both take extra batteries, either can close it with one.
Lifetime Value
Selected because: 6,000 rated cycles on 3,763 Wh against 4,000 on 2,048 Wh.
cost / lifetime kWh
Per kWh delivered, the bigger box is the bargain. Over its rated life the DELTA 4 (3800) puts out 22,578 kWh against 8,192 kWh for the C2000 Gen 2, so each kWh costs less on the EcoFlow: $0.10 against $0.12. Cycled daily, that's 16.4 years of rating against 11.
Two storms a year never collect on it. The math only pays out on a box that drains and refills every single day, which is exactly what a solar-fed home system does. For a closet emergency unit, the sticker gap is the number that counts.
Portability & Form Factor
Selected because: 67.5 lb against 41.7 lb, and only the C2000 Gen 2 has a car socket and an RV outlet.
weight
25.8 lb is where the EcoFlow stops being something you take places. The DELTA 4 (3800) weighs 67.5 lb with a handle at each endA7. I'd lift it into a truck bed on my own. I wouldn't haul it to a campsite every weekend.
The Anker also has the vehicle ports. The C2000 Gen 2 has a 12 V car socket and an RV outlet, and two of its USB-C ports run at 140 W. The DELTA 4 (3800) has no car socket, and its 30 A outlet is a twist-lockA3, which a camper's RV cord won't fit.
In the makers’ pictures
What you’d actually be living with
Every port, labelled
What plugs in where, and how much it takes
EcoFlow DELTA 3800 Gen4
Front panel
- 1USB-C · 140 WOutUp to 140 W (USB-PD up to 28 V at 5 A). The port for a laptop.
- 22× USB-C · 65 WOutUp to 65 W each. EcoFlow says these two and the USB-A share 16 W when two or more are in use at once.
- 3USB-A · 36 WOutUp to 36 W (5, 9 or 12 V at 3 A).
- 430 A twist-lockOutA three-slot twist-lock marked 30A MAX, rated 30 A at 120 V on the US unit.
- 54× 20 A outletsOutFour T-slot 120 V outlets rated 20 A each, sharing 3,600 W continuous and a 7,200 W surge.
Photo: EcoFlow · Product image, EcoFlow Japan store · numbers and labels are ours. Ratings from EcoFlow’s US spec table; outlet shapes read by us from EcoFlow’s picture, taken of the Japanese unit, which shares the US panel.
Input side
- 12× Solar/DC in · 1,000 WInTwo inputs, each 11 to 60 V, up to 20 A, 1,000 W: 2,000 W of panels in all.
- 2AC in · 1,800 WIn100–120 V at 15 A. Charges at up to 1,800 W, which at 120 V is the whole of an ordinary 15 A circuit.
- 3Battery portIn · OutTakes up to two of EcoFlow’s DELTA 3 Max Plus or DELTA Pro 3 extra batteries; EcoFlow quotes 4–12 kWh.
Photo: EcoFlow · Product image, EcoFlow Japan store · numbers and labels are ours. Ratings from EcoFlow’s US spec table and the panel’s own printing.
Anker SOLIX C2000 Gen 2
Front panel
- 112 V car socket · 120 WOutA 12 V car socket behind a cap, with its own button below it. Anker rates it 12 V at 10 A.
- 22× USB-C · 140 WOutC1 and C2, up to 140 W each (28 V at 5 A). Output only, by Anker’s FAQ.
- 3USB-C · 15 WOutC3, up to 15 W (5 V at 3 A). It shares a 20 W limit with the USB-A port, as printed on the panel.
- 4USB-A · 12 WOutUp to 12 W (5 V at 2.4 A), inside the 20 W it shares with the 15 W USB-C.
- 55× 20 A outletsOutFive NEMA 5-20 outlets at 120 V. All the AC outlets share 2,400 W continuous and a 4,000 W peak, by Anker’s spec table.
- 6TT-30 RV outletOutA NEMA TT-30 outlet, the plug on a camper’s 30 A shore-power cord. Anker rates it 120 V, 20 A max, inside the same 2,400 W.
The inputs are on the left side and the battery port on the right, mapped below.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. USB ratings printed on Anker’s panel; outlet types, the car socket and the AC totals from Anker’s US C2000 Gen 2 spec table (ankersolix.com/products/c2000-gen2).
Input side
- 1AC in · 1,800 WInPrinted 120V 15A Max, 50/60 Hz. Anker puts AC charging at 1,800 W, full in 88 minutes.
- 2XT60i solar in · 800 WInPrinted 11–28 V at 8.2 A or 28–60 V at 17 A, 800 W max. The one DC input: Anker also lists car charging at 100 W and its 800 W alternator charger.
Between the two inputs, a push switch Anker calls the Overload Protection Switch.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. Ratings printed on Anker’s panel; port names and the AC charging figure from Anker’s US C2000 Gen 2 page (ankersolix.com/products/c2000-gen2).
Battery side
- 1Battery portIn · OutA covered port for Anker’s BP2000 (Gen 2) expansion battery, 2,048 Wh: up to 4 kWh in all, by Anker’s page.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. Port named in Anker’s spec diagram; the battery and the total from Anker’s US C2000 Gen 2 page (ankersolix.com/products/c2000-gen2).
Strengths & trade-offs
EcoFlow DELTA 3800 Gen4
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$1,199) than the SOLIX C2000 Gen 2.
- –Significantly heavier (+25.8 lbs), making it harder to move.
Anker SOLIX C2000 Gen 2
Strengths
- +Costs $1,199 less
- +Lighter by 25.8 lb
Trade-offs
- –Weaker inverter (-1,200W) limits appliance compatibility.
- –Shorter-lived battery — rated for 4,000 charge cycles vs the DELTA 3800 Gen4's 6,000, so it wears out sooner.
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
DELTA 3800 Gen4
The C2000 Gen 2 runs 359 Wh short of the 2,100 Wh weekend, and the DELTA 4 (3800) has 1,099 Wh spare. It wins, as long as you can get 67.5 lb to the site.
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
DELTA 3800 Gen4
Both reach morning. The C2000 Gen 2 gets there on 96 Wh. The DELTA 4 (3800) arrives with 1,554 Wh, nearly a whole second night.
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 is about 40W for eight hours, so both of these cover the night several times over — capacity isn't the question here. The only published difference is fan noise, and it can't settle this: the SOLIX C2000 Gen 2 is rated 30dB and the DELTA 3800 Gen4 40dB, but the SOLIX C2000 Gen 2's is its maker's best case and the DELTA 3800 Gen4's is EcoFlow's maximum under heavy charge and discharge, so at a 40W draw the real gap can only be narrower than it looks, and may even run the other way. Neither settles which box is quieter at a bedside. Buy whichever is cheaper or easier to carry.
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
DELTA 3800 Gen4
The DELTA 3800 Gen4 clears the workday at 28% used, banking 2,289Wh — late work, extra calls, or a second laptop charge without arithmetic. The SOLIX C2000 Gen 2 at 52% also finishes, with 831Wh of slack for the unplanned.
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
DELTA 3800 Gen4
Both run the party with most of the battery left. The DELTA 4 (3800) keeps more in reserve, and it's 25.8 lb more to carry from the trunk.
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 covers 4,685 Wh on its own battery: the DELTA 4 (3800) is 1,486 Wh short and the C2000 Gen 2 is 2,944 Wh short. Both take extra batteries, so either can be grown to fit.
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
For this load: DELTA 3800 Gen4 runs 15.6h vs 8.5h.
$2,199 list · direct from EcoFlow
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 0–213.2hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–42.6hHigh-Draw Appliances
These reveal the real limitsscale 0–3.2h¹ 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 4, 2026
Verdict: the DELTA 3800 Gen4, on Power Score margin
I'd buy the DELTA 4 (3800) as the start of a home backup system. It holds 3,763 Wh against 2,048 Wh, runs 3,600 W against 2,400 W, takes 2,000 W of solar against 800 W, and grows to 4 to 12 kWh with EcoFlow's extra batteriesA6. It ends an 8-hour blackout with 1,554 Wh left where the SOLIX C2000 Gen 2 has 96 Wh, and over its rated life it costs $0.10 per kWh against $0.12. The catch is $1,199 more, 25.8 lb more and a late-November ship dateA10. If the box travels, or one night of backup is all you want from it, the C2000 Gen 2 is the better buy.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of November 4, 2026. The links below open EcoFlow's and Anker's current prices.
$2,199.00 · direct from EcoFlow
or check the SOLIX C2000 Gen 2 price$999.99 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated November 4, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): CPAP, Camping.
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 3800 Gen4 rates 4.1/5 (48th percentile of 22 Home Backup-class units), and SOLIX C2000 Gen 2 rates 4.1/5 (50th percentile of 29 Large-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.
This One Lives Where It Lands
67.5 lb against 41.7 lb for the C2000 Gen 2. One person can lift the DELTA 4 (3800) into a car, but nobody takes it down a trail. Plan on it parking beside the panel or the fridge.
Room for Two Motors at Once
The DELTA 4 (3800) surges to 7,200 W on 3,600 W continuous. The C2000 Gen 2 surges to 4,000 W on 2,400 W. A fridge and a sump pump starting together is the kind of moment the higher ceiling is for.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The DELTA 3800 Gen4's figure is a maximum rather than a guarantee — it depends on registering the unit in the EcoFlow app, which adds two years to a three-year standard term. Worth saying because the per-dollar framing can suggest otherwise: the SOLIX C2000 Gen 2 works out at 5 years of cover per $1,000 spent against the DELTA 3800 Gen4's 2.3, but that spread is the price gap, not the terms.
More Cycles on a Bigger Battery
6,000 cycles on 3,763 Wh against 4,000 on 2,048 Wh, or 22,578 kWh over the rating against 8,192 kWh. At one cycle a day that's 16.4 years against 11. It only adds up if the box cycles daily.
Full record above — the Test Desk pick is the DELTA 3800 Gen4.
Check DELTA 3800 Gen4 price →or check the SOLIX C2000 Gen 2 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
The SOLIX C2000 Gen 2 is cheaper to buy, but the DELTA 3800 Gen4 is cheaper to own. At $0.10/kWh over its lifetime vs $0.12/kWh, the DELTA 3800 Gen4's higher cycle life and capacity make each dollar go further over the years.
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 positions itself as a mid-to-premium brand with stronger support infrastructure, while Anker competes on value. The question is whether the EcoFlow ecosystem and support premium is worth it for your use case.
Growth path
DELTA 3800 Gen4
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,763Wh.
Accepts up to 2,000W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
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 — 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 — see methodology
Analyst note
Both expand, but the DELTA 3800 Gen4's higher solar ceiling (2,000W vs 800W) gives it the stronger off-grid growth path — more panels can feed a bigger bank as it grows.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3800 Gen4
Nobody owns a DELTA 4 (3800) yet. It went on sale on November 4 and EcoFlow ships it in late NovemberA10. Every figure here is from EcoFlow's US store page or our arithmetic on itA1A5A6.
The test I'd want is a short winter day on two strings of panels. Hypothetically, I'd wire one string to each 1,000 W inputA5, start from empty on a cloudy November morning and see how much of 3,763 Wh is back by dusk. That number says whether the bank can grow without the panels falling behind.
“Capacity 3,763 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3800 Gen4; buyers and the press call the pair the DELTA 4.”
Sources
us.ecoflow.co · jp.ecoflow.co
Anker SOLIX C2000 Gen 2
The C2000 Gen 2's reviews read like a list of things it does without fuss. Reviewers found it simple to set up and use, with fast charging and a premium buildB2, and one called it among the most attractive 2 kWh stations availableB4.
Quiet comes up again and again. One review heard a subdued whirr even at full powerB1, and the app earned praise for monitoring a chargeB3. All of it comes from hands-on reviews, not long-term ownersB0.
“Even at full power it's far quieter than any other powerful Anker station tested — 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.”
Sources
notebookcheck.net · thesolarlab.com · trustedreviews.com · 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
- Launch-day ledger: every entry is EcoFlow's own US store and documentation, or our labelled arithmetic. No owner or reviewer evidence exists yet. [DELTA 3800 Gen4 · 12 entries]
- Reviewers consistently praise quiet operation, fast charging, premium build, and no-fuss plug-and-play simplicity. [SOLIX C2000 Gen 2 · 3 entries]
- A1
“Capacity 3,763 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3800 Gen4; buyers and the press call the pair the DELTA 4.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A3
“AC outlets: 5 total, four rated 20 A max and one rated 30 A max (on EcoFlow's product images, four T-slot outlets and a three-slot twist-lock). USB-A: one port, 36 W max. USB-C: one at 140 W max and two at 65 W max; the two 65 W ports share circuitry with the USB-A, limited to 16 W total when used together. No 12 V car socket.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A4
“AC input 100–120 V, 15 A, 50/60 Hz; X-Stream charging up to 1,800 W from a US wall outlet. Our arithmetic: 1,800 W at 120 V is 15 A, the full rating of an ordinary 15 A circuit, so on a shared circuit you would set the charge rate lower in the EcoFlow app.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A5
“Solar: two inputs, 11–60 V DC at up to 20 A and 1,000 W each, 2,000 W total (XT60i; two XT60i-to-LP60 cables are in the box). EcoFlow lists six charging methods; its 800 W Alternator Charger is limited to 500 W through the Solar/DC port.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A6
“Extra Battery Port: up to two extra batteries through EcoFlow's Smart Extra Battery Expansion Adapter. Compatible: the DELTA Pro 3 Smart Extra Battery and the DELTA 3 Max Plus (2,048 Wh) Smart Extra Battery. EcoFlow quotes 4–12 kWh of expandable capacity.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A7
“Weight 67.5 lb (30.6 kg); 16.77 × 11.36 × 12.09 in without handles, 18.76 in long with them. A handle at each end; EcoFlow sells a folding transport cart separately ($109 at launch, listed at $199). EcoFlow calls it the smallest and lightest portable power station in its class (3–4 kWh and 3,600 W).”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A10
“On sale at us.ecoflow.com from November 4, 2026 at $2,199; EcoFlow says it ships in late November. Kits: with two 160 W solar panels $2,899; with a DELTA 3 Max Plus extra battery (6 kWh in all) $2,999. EcoFlow also sells it in Japan, where it went on sale October 30 at ¥240,900.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B1
“Even at full power it's far quieter than any other powerful Anker station tested — 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.”
notebookcheck.net / thesolarlab.com — Anker SOLIX C2000 Gen 2 review · 2026 · [positive]
- B2
“Really simple to use — 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.”
trustedreviews.com / thesolarlab.com — Anker SOLIX C2000 Gen 2 review · 2026 · [positive]
- B3
“The 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.”
androidguys.com — Anker SOLIX C2000 Gen 2 review · 2026 · [positive]
- B4
“Delivers a convincing performance with few points of criticism — undoubtedly one of the most attractive 2 kWh power stations on the market.”
notebookcheck.net — Anker SOLIX C2000 Gen 2 review · 2026 · [positive]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3800 Gen4 if you…
- →You're building home backup you'll add to. It takes up to two extra batteries, 4 to 12 kWh in allA6.
- →Your outages run into a second night. It ends an 8-hour blackout with 1,554 Wh left against 96 Wh.
- →You'll feed it from a real array. 2,000 W of solar input against 800 W.
- →It will cycle every day. $0.10 per lifetime kWh against $0.12.
Buy the SOLIX C2000 Gen 2 if you…
- →It goes in the car. 41.7 lb against 67.5 lb, with a 12 V car socket and an RV outlet.
- →One night is the job. It finishes the 8-hour blackout, a CPAP night and a remote workday for $1,199 less.
- →You need power before late November. EcoFlow ships the DELTA 4 (3800) thenA10.
- →You'd rather grow a battery at a time. It takes Anker expansion batteries too.
If neither fits
If anything you'd back up runs on 240 V, skip both. Neither has a 240 V outlet, so a deep well pump or an electric dryer needs a unit that does.
The Bottom Line
If this is the first battery in a home system, I'd buy the DELTA 4 (3800). It starts 1,715 Wh ahead, grows to 12 kWh by EcoFlow's figureA6, and fills from 2,000 W of panels against 800 W.
If it's a box for the car, the campsite or one bad night, buy the C2000 Gen 2. It's 25.8 lb lighter, it plugs into a camper, and it costs $1,199 less.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the DELTA 4 (3800) worth the extra money over the Anker SOLIX C2000 Gen 2?
For a home system you plan to grow, yes. It holds 3,763 Wh against 2,048 Wh, takes 2,000 W of solar against 800 W, and EcoFlow says it expands to 4 to 12 kWh. For a box that travels, no: the SOLIX C2000 Gen 2 is 25.8 lb lighter and has a car socket and an RV outlet.
How much is the DELTA 4 (3800) in the US, and when does it ship?
EcoFlow lists it at $2,199 on its US store. It went on sale on November 4, 2026, and EcoFlow says it ships in late November. The SOLIX C2000 Gen 2 sells for $1,000.
What batteries can you add to the DELTA 4 (3800)?
Up to two, through EcoFlow's expansion adapter: the DELTA Pro 3 extra battery or the DELTA 3 Max Plus extra battery, which holds 2,048 Wh. EcoFlow quotes 4 to 12 kWh in all.
Can either one run a well pump or a dryer?
Not a 240 V one. Neither has a 240 V outlet. For 120 V loads, the DELTA 4 (3800) runs 3,600 W with a 7,200 W surge, and the SOLIX C2000 Gen 2 runs 2,400 W with a 4,000 W surge.
How fast does the DELTA 4 (3800) charge from a wall outlet?
Up to 1,800 W, by EcoFlow's figure. That's 15 A at 120 V, the full rating of an ordinary 15 A circuit, so on a shared circuit you'd set it lower in the EcoFlow app.
Where to buy
EcoFlow DELTA 3800 Gen4Pick
$2,199.00
$2,199.00 · direct from EcoFlow
Anker SOLIX C2000 Gen 2
$999.99
$999.99 · direct from Anker
Last checked 31 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.