Head-to-head test
EcoFlow DELTA 3800 Gen4 vs Anker SOLIX F2600The Bigger Battery Is the Lighter Box. Do You Need the Room?
The DELTA 4 (3800) holds nearly half again the F2600's battery, weighs a little less and takes twice the solar, for a lot more money. I'd buy the F2600 for outage nights, unless panels or an extra battery are really on your list.
Black Friday · 23 days out
Price to beat:SOLIX F2600 $1,000
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 F2600 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunner’s take
Whole-Home Backup Tester
The bigger battery is the lighter box here.
The DELTA 4 (3800) holds 3,763 Wh at 67.5 lbA1A7. Anker's SOLIX F2600 holds 2,560 Wh at 70.5 lb. That's 1,203 Wh more for 3 lb less, so weight won't settle this one.
Price will, unless you plan to grow.
EcoFlow lists the DELTA 4 (3800) at $2,199A10, and the F2600 sells for $1,100. The extra money buys twice the solar input, a 3,600 W inverter against 2,400 WA2 and a port for two more batteriesA6.
Those are system parts, and they only pay off if you build the system.
If the job is getting a fridge and a router through a night without power, the F2600 does it with room left. In that case I'd keep the difference and spend it on panels.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
A long outage turns into a refill race, and the sun only pushes hard for a few hours a day. In that window twice the panel wattage puts back twice the energy, provided you own the panels. The DELTA 4 (3800) starts day two nearly a night ahead and can refill faster on top of it.
8-Hour Blackout (1,645 Wh): the DELTA 4 (3800) ends with 1,554 Wh, the F2600 with 531 WhDELTA 4 (3800): two solar inputs, 1,000 W eachA5SOLIX F2600: 1,000 W of solar input
Why it mattersIf your outages run to days and you'll buy the panels, the DELTA 4 (3800); if they last hours, the F2600 is plenty.
That's the line between an outage box with one step of growth and the core of a home battery. The EcoFlow's range is where I'd wire it to a transfer switch, the switch that feeds chosen house circuits from a battery, and leave it there for good. Its 3,600 W inverter runs more of those circuits at once than the F2600's 2,400 WA2.
SOLIX F2600: up to 4,608 Wh with Anker's BP2600B2DELTA 4 (3800): two extra batteries, 4 to 12 kWh by EcoFlow's figureA6Van Life Daily needs 4,685 Wh
Why it mattersIf this might become your house battery, start with the one that can grow into the job.
Capacity
Capacity you never draw down is capacity you paid for and stored. On one-night duty the EcoFlow's extra battery sits there, so the $1,099 buys margin you would only spend in a long outage or on a daily solar cycle.
SOLIX F2600: $1,100 for 2,560 WhDELTA 4 (3800): $2,199 for 3,763 WhBoth finish the 8-hour blackout and a CPAP night with most of a night to spare
Why it mattersIf one night at a time is the job, take the F2600 and keep the difference.
The specific dimensions that decide these two units — everything else is a tie.
Growth Path
Selected because: The DELTA 4 (3800) takes 2,000 W of solar and two extra batteries. The F2600 takes 1,000 W and an expansion battery.
solar input
The F2600's growth path is one battery long. Anker's BP2600 takes it to 4,608 WhB2. The DELTA 4 (3800) takes two extra batteries, from the DELTA Pro 3 or the DELTA 3 Max Plus, and EcoFlow quotes 4 to 12 kWh in allA6.
Solar is the half of growth people forget. A bigger bank needs more panels to refill it. Each of the EcoFlow's two inputs takes 1,000 W at 11 to 60 VA5, the voltage window a string of panels has to stay inside. The F2600 takes 1,000 W in all, which caps how fast any bank behind it refills.
Your Life, Your Pick
Selected because: After the 8-hour blackout the DELTA 4 (3800) has 1,554 Wh left and the F2600 has 531 Wh.
The second night is where they part. Both get through the 8-hour blackout. The DELTA 4 (3800) wakes up with about 94% of another night still in it. The F2600 has about 32%.
A camping weekend nearly empties the F2600. It finishes the 2,100 Wh weekend with 76 Wh to spare, against 1,099 Wh on the EcoFlow. A CPAP night fits both many times over. Van Life Daily's 4,685 Wh beats both on their own batteries, though the DELTA 4 (3800) covers about 68% of it.
Lifetime Value
Selected because: Rated for twice the F2600's cycles, the DELTA 4 (3800) is the cheaper of the two per lifetime kWh.
cost / lifetime kWh
Over its rated life, the dearer box is the cheaper one to own. Rated for 6,000 cycles, twice the F2600's, the DELTA 4 (3800) works out at $0.10 per lifetime kWh against $0.14. That sum assumes you use the cycles.
On outage duty you never collect it. A box that drains a few times a year comes nowhere near either rating, so the price you pay up front is the number that counts. On a daily solar cycle the F2600 reaches its rating in 8.2 years and the EcoFlow in 16.4, and the gap starts paying you back.
What the Specs Don't Tell You
Selected because: 7,200 W of surge against 2,800 W, for the morning two motors start at once.
rated cycles
I'd trust the EcoFlow with a sump pump and a fridge in the same outage. It surges to 7,200 W against 2,800 W, and it runs 3,600 W against 2,400 WA2. Two motors that start together add their spikes, and 2,800 W fills up fast.
Neither publishes a noise figure you can compare. EcoFlow rates the DELTA 4 (3800) at 40 dB or less up to 1,800 WA8, a most-it-gets ceiling rather than a best case. Anker publishes none for the F2600, though owners call it quietB3. If it will sit in a bedroom, listen to the F2600 first.
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 F2600
Front panel
- 14× 20 A outletsOutFour NEMA 5-20 outlets. All the AC outlets share 2,400 W continuous and a 2,800 W surge, by Anker’s spec table.
- 2TT-30 RV outletOutA NEMA TT-30 outlet, the plug on a camper’s 30 A shore-power cord. It shares the 2,400 W with the other outlets.
- 32× car socket · 120 WOutTwo 12 V car sockets behind caps, 120 W (12 V at 10 A) each, switched by the CAR SOCKET button.
- 43× USB-C · 100 WOutThree USB-C ports, up to 100 W each.
- 52× USB-A · 12 WOutTwo USB-A ports, up to 12 W each.
Above this row: the screen, the DISPLAY and POWER SAVING buttons and a RESET hole. The inputs and the battery port are on the back, mapped below.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. Outlet types and ratings from Anker’s US F2600 spec table (ankersolix.com/products/f2600); the panel’s own printing read from Anker’s picture.
Rear panel
- 1Solar/car in · 1,000 WInPrinted SOLAR CAR INPUT. Takes up to 1,000 W of solar at 11 to 60 V, or 120 W from a car socket.
- 2AC in · 1,440 WInThe AC charging inlet, up to 1,440 W.
- 3Battery portIn · OutA covered port marked with a battery, for Anker’s expansion battery: up to 4,608 Wh in all, by Anker’s spec table.
Between the two inputs, a reset button printed OVERCHARGE PROTECTION.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. Port names printed on Anker’s panel; ratings from Anker’s US F2600 spec table (ankersolix.com/products/f2600).
Strengths & trade-offs
EcoFlow DELTA 3800 Gen4
Strengths
- +Lighter by 3 lb
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$1,099) than the SOLIX F2600.
Anker SOLIX F2600
Strengths
- +Costs $1,099 less
Trade-offs
- –Weaker inverter (-1,200W) limits appliance compatibility.
- –Shorter-lived battery — rated for 3,000 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 SOLIX F2600 finishes the weekend at 97% used with 76Wh in hand — one cold night or an extra device eats into that. The DELTA 3800 Gen4 finishes at 66% with 1,099Wh, real slack for the spontaneous stuff. If you camp in variable weather, that buffer is the difference between relaxing and watching the battery app.
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 make it to morning. The DELTA 4 (3800) has 1,554 Wh left, close to another full night. The F2600 has 531 Wh.
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. What would separate them is fan noise, but SOLIX F2600 doesn't publish a figure, so there's nothing to hold it to. Buy on price, weight, and whether you can live with a fan you haven't heard.
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
Both finish the day. The DELTA 4 (3800) uses 28% of its usable battery to the F2600's 42%, and its 140 W USB-C port charges a big laptop without going through the inverter.
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 handle game day with most of the battery left. The DELTA 4 (3800) is also the lighter one to carry from the trunk, despite holding more.
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) gets about 68% of the way and takes extra batteries to go further.
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 10.6h.
$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 Anker SOLIX F2600
I'd buy the F2600 unless you're building toward more solar and extra batteries. It costs $1,099 less, it's the cheaper battery per watt-hour, and it finishes the 8-hour blackout with 531 Wh to spare. The DELTA 4 (3800) is the bigger system: 3,763 Wh at 3 lb less, 2,000 W of solar on two inputs and room for two extra batteries, 4 to 12 kWh in all by EcoFlow's figureA6. That growth is what the gap buys. If you'll use it, and above all if the box will cycle off solar every day, the EcoFlow is the better buy and the cheaper one to own.
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.
$1,999.99 · direct from Anker
Last checked 31 days ago. Prices move — check before you buy.
or check the DELTA 3800 Gen4 price$2,199.00 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): Apartment Balcony.
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 F2600 rates 4.0/5 (39th 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.
Three Pounds Apart
The DELTA 4 (3800) is 67.5 lb and the SOLIX F2600 is 70.5 lb. Neither is a one-hand carry. The lighter one is also the one holding 1,203 Wh more.
Room for Two Motors at Once
The DELTA 4 (3800) surges to 7,200 W on a 3,600 W rating. The F2600 surges to 2,800 W on 2,400 W. A fridge and a sump pump that start together add their spikes, and the higher ceiling is the one more likely to start both.
UPS Switchover: ≤10ms vs ≤20ms
Both list a UPS mode, at different rated speeds. The DELTA 3800 Gen4 is rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. The SOLIX F2600 is rated ≤20ms — fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. If a computer with unsaved work is the thing being protected, the stated class is worth the attention; nothing here is a lab result.
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 F2600 works out at 4.5 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.
Battery Lifespan in Real Years
The DELTA 3800 Gen4 is rated for 6,000 cycles vs 3,000. In real life: at daily use, that's 16.4 vs 8.2 years. At weekend use (twice a week), it's 58 vs 29 years. One caution reading years across different sizes: a cycle is 3,763Wh on the DELTA 3800 Gen4 and 2,560Wh on the SOLIX F2600, so count lifetime energy — roughly 22,578 kWh against 7,680 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
A Ceiling on One Side, Nothing on the Other
EcoFlow publishes a noise ceiling for the DELTA 4 (3800), the most it should reach at moderate loads, not a best case. Anker publishes no figure for the SOLIX F2600. That isn't evidence the F2600 is louder. It means there's nothing to hold it to, so hear one before it goes in a bedroom.
Full record above — the Test Desk pick is the SOLIX F2600.
Check SOLIX F2600 price →or check the DELTA 3800 Gen4 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 F2600 is cheaper to buy, but the DELTA 3800 Gen4 is cheaper to own. At $0.10/kWh over its lifetime vs $0.14/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 F2600
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 2,560Wh.
Accepts up to 1,000W 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 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 1,000W) 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
No one has a DELTA 4 (3800) in hand yet. EcoFlow opened US sales on November 4 and says it ships in late NovemberA10. I went through EcoFlow's US store page and FAQ for everything here, and nothing on it is a field reportA5A6.
I'd want to load both solar inputs at once. Two strings of different folding panels, one per input, on a clear winter noon, to see whether each input holds its 1,000 WA5 or the box backs off as it warms up.
“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 F2600
F2600 owners mostly say it stays out of the way. Owner reviews praise quiet operation and an easy appB3, and reviewers rate it well for outagesB4. A few wish the cable layout took less roomB3.
Fast wall charging is its headline in reviews. HyperFlash takes it from 0 to 80% in about 78 minutesB1. The EcoFlow takes up to 1,800 W from the wallA4, into a much bigger battery.
“Packs 2,560Wh into the same footprint as the F2000, with HyperFlash fast charging reaching 0-80% in about 78 minutes.”
Sources
backuppowerhub.com · ankersolix.com · homedepot.com · outboundpower.com · samsclub.com · batteryskills.com · thesolarlab.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]
- Fast HyperFlash charging, quiet operation, a good app, expandability, and a 5-year warranty are the standout praise for this 2,560Wh unit. [SOLIX F2600 · 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]
- A2
“US unit: 120 V AC, 60 Hz; rated 3,600 W continuous with a 7,200 W surge. It supports X-Boost (EcoFlow refers to the manual for the US X-Boost figure); X-Boost is unavailable while the unit charges from the wall or runs in bypass.”
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]
- A8
“Switches to backup within 10 ms when the grid drops; EcoFlow's FAQ says it does not support HID communication. Noise by EcoFlow's figures: 40 dB or less at up to 1,800 W, 50 dB or less at the full 3,600 W. IP20.”
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
“Packs 2,560Wh into the same footprint as the F2000, with HyperFlash fast charging reaching 0-80% in about 78 minutes.”
backuppowerhub.com / ankersolix.com — SOLIX F2600 review · 2026 · [positive]
- B2
“Expandable via the BP2600 battery module, scaling total capacity to 4,608Wh through Anker's proprietary link cable.”
homedepot.com / outboundpower.com — SOLIX F2600 / BP2600 · 2026 · [positive]
- B3
“Owners praise ample inverter power, quiet operation, and a user-friendly app; some suggest the cable design could be more space-efficient.”
samsclub.com / batteryskills.com — SOLIX F2600 owner reviews · 2026 · [positive]
- B4
“InfiniPower LFP rated for 3,000 cycles with a 5-year warranty; well-received for power-outage performance and ease of use.”
backuppowerhub.com / thesolarlab.com — SOLIX F2600 review · 2026 · [positive]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3800 Gen4 if you…
- →You'll add panels. It takes 2,000 W of solar on two inputs, twice the F2600's.
- →Outages here last days. It ends an 8-hour night with 1,554 Wh left, against 531 Wh.
- →This may become the house battery. EcoFlow quotes up to 12 kWh with two extra batteriesA6.
- →It will cycle off solar every day. It's rated for 6,000 cycles, twice the F2600's.
Buy the SOLIX F2600 if you…
- →One night at a time is the job. It covers the 8-hour blackout with room left, for $1,099 less.
- →You camp off 12 V. It has two car outlets and an RV outlet. The DELTA 4 (3800) has no car socket.
- →You top up from the wall before storms. HyperFlash reaches 80% in about 78 minutesB1.
- →You need it now. The DELTA 4 (3800) ships in late November, by EcoFlow's dateA10.
If neither fits
If anything you'd back up runs on 240 V, like a deep well pump or an electric dryer, close this tab. Neither has a 240 V outlet, whatever batteries you add. Look at a unit that does.
The Bottom Line
For outage nights, I'd buy the F2600. It gets through the 8-hour blackout with room to spare and costs $1,099 less.
If panels and extra batteries are really coming, buy the DELTA 4 (3800). It's the one that grows into a house battery, with twice the solar to keep it full.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 4 (3800) available in the US?
Yes. EcoFlow began selling it at its US store on November 4, 2026, at $2,199, and says it ships in late November.
Is the DELTA 4 (3800) worth the extra money over the SOLIX F2600?
Only if you'll use what it adds. It costs $1,099 more and brings 1,203 Wh more battery, twice the solar input and room for two extra batteries. For one night of backup at a time, the SOLIX F2600 does the job for less.
Which one charges faster from solar?
The DELTA 4 (3800). It takes 2,000 W across two solar inputs, 1,000 W each at 11 to 60 V. The SOLIX F2600 takes 1,000 W.
Can both the DELTA 4 (3800) and the SOLIX F2600 add extra batteries?
Yes. The SOLIX F2600 takes Anker's BP2600 and reaches 4,608 Wh. The DELTA 4 (3800) takes up to two DELTA Pro 3 or DELTA 3 Max Plus extra batteries, and EcoFlow quotes 4 to 12 kWh in all.
Which one is heavier?
The SOLIX F2600, at 70.5 lb against 67.5 lb. The DELTA 4 (3800) holds more: 3,763 Wh against 2,560 Wh.
Where to buy
EcoFlow DELTA 3800 Gen4
$2,199.00
$2,199.00 · direct from EcoFlow
Anker SOLIX F2600Pick
$1,999.99
$1,999.99 · direct from Anker
Last checked 31 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.