Head-to-head test
EcoFlow DELTA 3000 Gen4 vs Anker SOLIX F3800It Can Never Add a Battery. So Why Pick It Over the F3800?
The F3800 is the first piece of a home system, and the DELTA 4 (3000) is a finished box you can carry. If everything you'd back up runs on 120 V and the box is the whole plan, I'd buy the EcoFlow.
Black Friday · 23 days out
Price to beat:SOLIX F3800 $1,980
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Full profiles: EcoFlow DELTA 3000 Gen4 → · Anker SOLIX F3800 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunner’s take
Whole-Home Backup Tester
One of these is a finished box and the other is the first piece of a system.
EcoFlow's DELTA 4 (3000) holds 3,072 Wh and has no extra-battery port at all, so that's its size for as long as you own itA6. Anker's SOLIX F3800 starts at 3,840 Wh, takes Anker expansion batteries and has 240 V outlets.
The F3800 costs more, and per watt-hour it isn't overpriced.
At $2,200 against $1,699, it charges about what the EcoFlow does for each watt-hour and hands you exactly a quarter more battery. The price of that battery is weight: the F3800 is more than twice as heavy.
So the question is whether your plan has a step two.
If the box is the plan, a fridge, a furnace blower and the router on 120 V, the DELTA 4 (3000) runs it on a 3,600 W inverter and goes back in the closet. If a transfer switch, a 240 V well pump or a second battery is coming, the F3800 is built for that. Timing matters too: EcoFlow ships the DELTA 4 (3000) in early DecemberA10.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
Home backup plans tend to grow. First a box, then a transfer switch, which lets a battery feed chosen circuits in your panel, then more battery. The F3800 can follow that plan all the way. The DELTA 4 (3000) stops at step one, and outgrowing it means buying a second station.
DELTA 4 (3000): 3,072 Wh, no extra-battery portA6SOLIX F3800: 3,840 Wh, takes Anker expansion batteriesSOLIX F3800: two 240 V outlets; DELTA 4 (3000): none
Why it mattersIf you can already picture step two, buy the F3800. If the box is the whole plan, sealed is fine.
solar input
Night two on the EcoFlow depends on the afternoon in between. At its full 1,000 W, refilling 3,072 Wh takes a bit over three hours of strong sun on panels big enough to feed itA5. A clear day gives you that. A storm day doesn't. The F3800 carries most of night two in the battery and takes 2,400 W when the sun comes back.
8-Hour Blackout needs 1,645 WhDELTA 4 (3000) finishes with 966 Wh left; SOLIX F3800 with 1,619 WhSolar: 1,000 W on one inputA5 against 2,400 W
Why it mattersIf your outages run two nights under cloud, the F3800's extra quarter of battery is the part you're paying for.
rated cycles
The F3800's extra money buys battery and inverter you can use this winter. The EcoFlow's lower price buys years: cycled daily, the F3800 reaches its rating in 8.2 years and the DELTA 4 (3000) in 16.4. Only the first shows up in a single storm, and only the second shows up if the box runs off solar every day.
$1,699 for 3,072 Wh; $2,200 for 3,840 WhDELTA 4 (3000): 6,000 rated cyclesA9; SOLIX F3800: 3,00057.3 lb against 132.3 lb
Why it mattersIf you'd only plug 120 V loads into the F3800, the DELTA 4 (3000) is the better spend, and it keeps paying back for longer.
The specific dimensions that decide these two units — everything else is a tie.
Growth Path
Selected because: The DELTA 4 (3000) is sealed at 3,072 Wh. The F3800 starts at 3,840 Wh and takes Anker expansion batteries.
solar input
This is the honest catch on my pick. The DELTA 4 (3000) has no extra-battery portA6. Outgrow 3,072 Wh and your only move is a second station. The F3800 takes Anker's expansion batteries, so 3,840 Wh is where it starts.
Even EcoFlow keeps its growth path in the bigger box. EcoFlow lists expansion only for the bigger DELTA 4A6. If you want EcoFlow's lighter build and room to grow, that's the one to compare, not this one. If you want a box that runs the fridge through a storm and goes back in the closet, you'll never miss the port.
Your Life, Your Pick
Selected because: Both get through one 1,645 Wh night. Only the F3800 has most of a second one left.
One night is a draw. The second night isn't. Our 8-hour blackout uses 1,645 Wh. The DELTA 4 (3000) finishes with 966 Wh left and the F3800 with 1,619 Wh, nearly a full second night. A CPAP night and a remote workday fit either several times over.
Camping and the tailgate go to the EcoFlow on weight. Nobody hauls the F3800 to a campsite. Van Life Daily at 4,685 Wh beats both, and only the F3800 can add a battery to close the gap.
Portability & Form Factor
Selected because: 57.3 lb against 132.3 lb: less than half the weight for four-fifths of the battery.
weight
One person carries the DELTA 4 (3000). At 57.3 lb with a handle at each endA7, it's a one-person lift into a hatchback, and EcoFlow sells a folding cart if you'd rather roll itA7.
The F3800 is furniture. At more than twice the weight, it's built to park near the panel and stay. If it never moves, its weight costs you one hard afternoon. If it goes to the cabin, I'd buy the EcoFlow on this alone.
What the Specs Don't Tell You
Selected because: The F3800 surges to 9,000 W against 7,200 W, and the switchover ratings are 10 ms against 20 ms.
rated cycles
For motor loads, the F3800 has the bigger ceiling. It surges to 9,000 W against 7,200 W and runs 6,000 W continuously against 3,600 W. A well pump or a big compressor pulls its hardest for a moment at switch-on, so for those the F3800 is the safer bet.
The EcoFlow switches over faster on paper. Both have a UPS mode, which takes over when the grid drops. The ratings are no worse than 10 ms on the DELTA 4 (3000) and no worse than 20 ms on the F3800, and both are ceilings, not lab results. A router rides through either. A desktop PC with unsaved work is where the faster rating could matter.
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 3000 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
- 1Solar/DC in · 1,000 WIn11 to 60 V, up to 20 A, 1,000 W.
- 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.
No battery port: the 3000 doesn’t take extra batteries.
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 F3800
Front panel
- 112 V car socketOutA 12 V car socket behind a cap, with its own button.
- 23× USB-C · 100 WOutUp to 100 W each.
- 32× USB-AOutTwo USB-A ports.
The AC outlets and the inputs are on the two sides, mapped below.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. Port counts and the USB-C rating from our catalogue.
Outlet side
- 1NEMA 14-50 · 240 VOutA 240 V outlet that takes an EV charger or an RV’s 50 A cord directly, or a 14-50 cable to a transfer switch.
- 2L14-30R · 240 VOutA 240 V twist-lock, the usual plug for a transfer switch or a generator inlet box.
- 36× 120 V outletsOutSix T-slot 120 V outlets. All the AC outlets share the F3800’s 6,000 W.
Photo: Anker · Product image, via Adorama · numbers and labels are ours. Outlet types read by us from Anker’s picture and named on Anker’s product images; uses from Anker’s US F3800 guide; the count from our catalogue.
Input side
- 1Home panel portIn · OutA covered port marked with a house, for Anker’s Home Power Panel.
- 2AC inInThe AC charging inlet. Anker says a generator must be pure sine wave, and the input can start as low as 200 W.
- 32× XT-60 solar inInTwo XT-60 inputs, 11 to 60 V, up to 1,200 W each and 2,400 W in all.
- 4Battery portIn · OutA covered port for Anker’s BP3800 expansion battery.
Photo: Anker · Product image, via Adorama · numbers and labels are ours. Ports read by us from Anker’s picture; ratings and uses from Anker’s US F3800 guide.
Strengths & trade-offs
EcoFlow DELTA 3000 Gen4
Strengths
- +Costs $501 less
- +Lighter by 75 lb
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Weaker inverter (-2,400W) limits appliance compatibility.
- –Sealed capacity — the SOLIX F3800 can add batteries to grow past 3,072Wh; this one can't.
Anker SOLIX F3800
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Significantly heavier (+75 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the DELTA 3000 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 3000 Gen4
Both hold the 2,100 Wh weekend. The DELTA 4 (3000) takes it because it's the one you'd load into the car.
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
SOLIX F3800
Both finish the 1,645 Wh night. The F3800 has 1,619 Wh left, nearly a second night. The DELTA 4 (3000) keeps 966 Wh, a bit over half of one.
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 F3800 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
Either unit
Both power your workstation all day without strain. At these utilization levels the real difference is USB-C for direct laptop charging — 140W on the DELTA 3000 Gen4 against 100W — which beats the inverter for convenience and wastes less energy.
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 3000 Gen4
The SOLIX F3800 at 132.3 lbs is not a take-along — it rolls off a truck bed if it travels at all, so this scenario belongs to the DELTA 3000 Gen4 by default — and it earns it, covering the 670Wh with 1,941Wh to spare. Capacity was never the SOLIX F3800's problem here; getting to a tailgate was.
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. The F3800 comes up 1,421 Wh short and can add a battery. The DELTA 4 (3000) comes up 2,074 Wh short and can't.
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: SOLIX F3800 runs 15.9h vs 12.7h.
$2,199.99 list · direct from Anker
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 0–217.6hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–43.5hHigh-Draw Appliances
These reveal the real limitsscale 0–3.3h¹ 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 EcoFlow DELTA 3000 Gen4
I'd buy the DELTA 4 (3000) if your plan ends at one box on 120 V. It holds 3,072 Wh against 3,840 Wh, weighs 57.3 lb against 132.3 lb and costs $501 less. Per watt-hour the two are priced about the same, so the F3800 isn't overcharging for its extra quarter of battery. It's selling a bigger job: 240 V outlets, Anker expansion batteries, more than twice the solar input and nearly a second blackout night in reserve, on sale now while EcoFlow ships the DELTA 4 (3000) in early DecemberA10. Need any of those and the F3800 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.
$1,699.00 · direct from EcoFlow
or check the SOLIX F3800 price$2,199.99 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): UPS, Tailgating, 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 3000 Gen4 rates 4.8/5 (86th percentile of 29 Large-class units), and SOLIX F3800 rates 4.5/5 (71st percentile of 22 Home Backup-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.
One Rides in the Car, One Stays Put
The F3800 weighs 132.3 lb, more than twice the DELTA 4 (3000)'s 57.3 lb. It's a two-person lift that goes where you park it and stays. The EcoFlow is a one-person carry.
Sealed at 3,072 Wh, for Good
The DELTA 4 (3000) has no extra-battery port, so what you buy is the ceiling. The F3800 starts at 3,840 Wh and takes Anker expansion batteries. If your needs grow, only one of these grows with them.
Surge Power: Ratio and Ceiling Disagree
The DELTA 3000 Gen4 holds the higher surge-to-continuous ratio (2× vs 1.5×), but the SOLIX F3800 holds the higher absolute surge ceiling — 9,000W against 7,200W. These measure different things. The ratio says how much headroom an inverter keeps above its own rating; the ceiling says how big a startup spike it can actually swallow. A motor draws a number of watts at switch-on, not a multiple of someone else's rating, so on raw starting ability the SOLIX F3800 is the stronger unit here — while the DELTA 3000 Gen4 is the one running further below its own limit at steady state.
UPS Switchover: ≤10ms vs ≤20ms
Both list a UPS mode, at different rated speeds. The DELTA 3000 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 F3800 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 3000 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 DELTA 3000 Gen4 works out at 2.9 years of cover per $1,000 spent against the SOLIX F3800's 2.3, but that spread is the price gap, not the terms.
Battery Lifespan in Real Years
The DELTA 3000 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. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
SOLIX F3800: Noise Level Not Disclosed
The DELTA 3000 Gen4 publishes its noise level (40dB); the SOLIX F3800 doesn't publish one. That isn't evidence the SOLIX F3800 is louder — it means there's no figure to hold it to, and no way to compare the two on this without hearing them. If you're buying for a bedroom, a CPAP, or an apartment, treat the DELTA 3000 Gen4's 40dB as the only published number on the table — a spec-sheet figure, not a measurement — and look for hands-on reports of the SOLIX F3800 before deciding.
Full record above — the Test Desk pick is the DELTA 3000 Gen4.
Check DELTA 3000 Gen4 price →or check the SOLIX F3800 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 DELTA 3000 Gen4 wins on both sticker price and long-term value. At $0.09/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Delivers each lifetime kWh for $0.10 less — check the DELTA 3000 Gen4 price →
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 3000 Gen4
FIXED CAPACITYFixed at 3,072Wh — a sealed, complete system rather than a starting point. There's no expansion port, so that figure is the ceiling: check it against your longest unplugged stretch before you buy.
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.
SOLIX F3800
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,840Wh.
Accepts up to 2,400W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are Anker-specific. You're investing in the Anker ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
The DELTA 3000 Gen4 is sealed at 3,072Wh, which is fine if that covers you. The SOLIX F3800 starts at 3,840Wh and can grow beyond it with Anker expansion batteries — real headroom the DELTA 3000 Gen4 doesn't have if your needs climb toward partial-home backup.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3000 Gen4
Nobody owns a DELTA 4 (3000) yet. EcoFlow opened US orders on November 4 and ships in early DecemberA10, so all I have is EcoFlow's US store page and our own arithmeticA1A4A7.
I'd want to test the wall charger on a real kitchen circuit. At its full 1,800 W, X-Stream charging draws 15 A at 120 V, the whole rating of an ordinary 15 A circuitA4. Hypothetically, I'd run it flat out beside a running fridge on the same circuit and see whether the breaker holds. If it doesn't, the EcoFlow app lets you set a lower charge rateA4.
“Capacity 3,072 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3000 Gen4; buyers and the press call the pair the DELTA 4.”
Sources
us.ecoflow.co · jp.ecoflow.co
Anker SOLIX F3800
Owners like what the F3800 runs and fight its solar input. One runs a water pump through a transfer switch off a single 120 V outlet and says it handles everythingB5. Several say the input is hard to match with panels other than Anker'sB1B2B14, and one points to a separate charge controller as the workaroundB13.
One early report is worth checking before you count on UPS. An owner said the F3800 couldn't charge from the wall while powering loadsB4. That sits oddly beside the switchover rating Anker lists, so I'd confirm pass-through on a current unit before wiring a computer to it. Support stories run from an advance replacementB9 to one owner, model unconfirmed, who says Anker stopped answeringB8.
“I have been using the F3800 for a couple weeks now, using only a single 120V outlet into a reliance transfer switch and it runs everything I throw at it including a water pump.”
Sources
diysolarforum.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 3000 Gen4 · 12 entries]
- Owners consistently complain that the solar/DC input is restrictive, effectively locking users into pricier Anker-branded panels rather than generic arrays. [SOLIX F3800 · 4 entries]
- Fan/inverter noise is generally reported as quiet at idle but with occasional intermittent buzzing/rattling under load or fault conditions. [SOLIX F3800 · 3 entries]
- Anker support experiences are polarized — some owners report fast, responsive replacements while at least one reports being ignored after a major purchase. [SOLIX F3800 · 3 entries]
- A1
“Capacity 3,072 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3000 Gen4; buyers and the press call the pair the DELTA 4.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-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-3000-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-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A5
“Solar: one input, 11–60 V DC at up to 20 A, 1,000 W (XT60i; an XT60i-to-LP60 cable is 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-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A6
“No extra-battery port. EcoFlow lists expansion only for the DELTA 3800 Gen4 (two extra batteries through its expansion adapter); the 3000 is sealed at 3,072 Wh.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A7
“Weight 57.3 lb (26 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 kWh and 3,600 W).”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A9
“Rated for 6,000 cycles (EcoFlow: "15+ years"). Charges at 32–113°F (0–45°C), runs at 14–113°F (−10–45°C). Wi-Fi and Bluetooth with the EcoFlow app. Warranty: 3 years plus a 2-year extension when registered in the EcoFlow app.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-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 $1,699; EcoFlow says it ships in early December. Kit with two 160 W solar panels $2,299. EcoFlow also sells it in Japan, where it went on sale October 30 at ¥179,900.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B1
“The solar input for charging is a pain, so much so that I'm only using it if there is no other way to charge the F3800.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [negative]
- B2
“The limitations of the inputs make it very difficult to use solar panels other than Anker's panels, which are pricey for a "full up" config.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [negative]
- B4
“the lack of passthru mode, you cannot charge via the 120VAC input while discharging.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [negative]
- B5
“I have been using the F3800 for a couple weeks now, using only a single 120V outlet into a reliance transfer switch and it runs everything I throw at it including a water pump.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [positive]
- B8
“Anker support is ghosting me after I spent over 20k on their solix line and solar panels within a month... they are not answering/returning my calls or emails.”
diysolarforum.com — 'Big issue with Anker Solix F3800 plus battery pack' · 2025-08 · [negative]
- B9
“I've called them and submitted tickets via their portal, always very responsive. They've even done advanced replacement for me.”
diysolarforum.com — 'Big issue with Anker Solix F3800 plus battery pack' · 2025-08 · [positive]
- B13
“no one on Youtube is addressing the solar input problem directly. But People smarter than myself with secondary charge controllers... are able to navigate around the problem.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [negative]
- B14
“other than the solar input problem having limited panel array choices to max out it's input capability it's a great unit so far.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [mixed]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3000 Gen4 if you…
- →The box is the whole plan. 3,072 Wh with no battery port, and that suits you.
- →Everything you'd back up runs on 120 V: a fridge, a furnace blower, the router and some lights.
- →It has to move. 57.3 lb with a handle at each endA7.
- →You'll cycle it often. It's rated for 6,000 cycles against 3,000.
- →Your laptop charges off the station. 140 W of USB-C against 100 W.
Buy the SOLIX F3800 if you…
- →Something in the house runs on 240 V, a deep well pump on a transfer switch, say.
- →Step two is already planned. It takes Anker expansion batteries. The DELTA 4 (3000) takes none.
- →Your outages run two nights. It finishes our 8-hour blackout with nearly a second night left.
- →You need it before December. EcoFlow ships the DELTA 4 (3000) in early DecemberA10, and the F3800 is on sale now.
If neither fits
If you're fitting out a van, neither is the answer. Van Life Daily needs 4,685 Wh, the DELTA 4 (3000) can never grow to it, and the F3800 is too heavy to live with in a van. Look at a lighter station that takes extra batteries.
The Bottom Line
If the box is the whole plan and it runs on 120 V, I'd buy the DELTA 4 (3000). It does that job at less than half the weight, for $501 less, with twice the rated cycles.
If you can already see step two, a transfer switch with a 240 V load on it or a second battery, buy the F3800. It's the one that grows, and it's on sale now, while the EcoFlow ships in early DecemberA10.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
How much is the DELTA 4 (3000) in the US, and when does it ship?
EcoFlow lists it at $1,699 on its US store. Orders opened on November 4, 2026, and EcoFlow says it ships in early December. The SOLIX F3800 sells for $2,200.
Can you add a battery to the DELTA 4 (3000)?
No. It has no extra-battery port, so 3,072 Wh is all it will ever hold. The SOLIX F3800 starts at 3,840 Wh and accepts Anker expansion batteries.
Which one lasts longer in a power outage?
The SOLIX F3800, with 3,840 Wh against 3,072 Wh. In our 8-hour blackout, which uses 1,645 Wh, the F3800 finishes with 1,619 Wh left and the DELTA 4 (3000) with 966 Wh.
Does the DELTA 4 (3000) have 240 V outlets?
No. Its five outlets are 120 V: four rated 20 A and one 30 A twist-lock. The SOLIX F3800 has 240 V outlets for loads like a deep well pump.
Is the SOLIX F3800 worth the extra money?
Only if you'll use what it adds. Per watt-hour the two cost about the same, and the F3800 adds a quarter more battery, 240 V outlets and expansion batteries. If you'd only run 120 V loads, the DELTA 4 (3000) does the job at less than half the weight.
Where to buy
EcoFlow DELTA 3000 Gen4Pick
$1,699.00
$1,699.00 · direct from EcoFlow
Anker SOLIX F3800
$2,199.99
$2,199.99 · direct from Anker
Last checked 31 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.