Head-to-head test
EcoFlow DELTA Pro 3 vs Anker SOLIX F3800 PLUS
Both boxes clear every load on this page, so the question was never power: it's that the cheaper one also delivers 42% more energy before it dies.
Full profiles: EcoFlow DELTA Pro 3 → · Anker SOLIX F3800 PLUS →
Looking for a different matchup? EcoFlow DELTA Pro 3 vs Anker SOLIX F3800
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
$2,799.00 · direct from EcoFlow
Last checked 1 day ago. Prices move — check before you buy.
$2,599.99 · direct from Anker
Last checked 1 day ago. Prices move — check before you buy.
Spec deltas
Take the DELTA Pro 3, for a reason that has nothing to do with the spec both brands lead with. The Anker SOLIX F3800 PLUS is the bigger inverter: 6,000W continuous and 9,000W surge against the EcoFlow's 4,000W and 6,000W. In all six loads this page models, neither unit ever needs it.
What the EcoFlow spends that money on instead is time. Multiply it out: 4,096Wh across 4,000 rated cycles is 16,384 kWh of lifetime throughput, while 3,840Wh across 3,000 cycles is 11,520. Forty-two percent more energy, out of the unit that costs $101 less. Fifteen cents a kilowatt-hour against twenty-two, and you only need to read that once.
The Anker has two genuine cards and they're worth naming before the verdict rather than after. It accepts 3,200W of solar against the EcoFlow's 2,000W, which on day three of an outage is the difference between refilling in one good window and needing two. And if you own something that actually pulls more than 4,000W continuously, a well pump or a 240V compressor, the argument above stops applying and the Anker is your unit.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
That headroom isn't free: it comes with a $101 premium ($2,500 against $2,399) and 19.9 lbs of additional mass to move. A ceiling is worth precisely what you do with it, and the honest answer for a fridge, a furnace fan, some lights and a laptop is nothing at all.
SOLIX F3800 PLUS: 6,000W continuous, 9,000W surgeDELTA Pro 3: 4,000W continuous, 6,000W surgeAll six scenarios report both units can power the peak load
Why it mattersIf you can't name the specific appliance in your house that draws over 4,000W continuously, you're paying twice for a spec you'll never reach.
rated cycles
Cheaper up front and longer-lived is a combination that usually doesn't exist, and here it does. Cycle either unit daily and the EcoFlow is rated for 11 years against the Anker's 8.2, so the gap isn't a rounding error, it's the difference between owning one battery and starting to shop for the next.
DELTA Pro 3: 4,096Wh, 4,000 cycles, $2,399SOLIX F3800 PLUS: 3,840Wh, 3,000 cycles, $2,500Rated years at daily cycling: 11 vs 8.2
Why it mattersAnyone cycling this thing daily for off-grid or solar self-consumption takes the EcoFlow and gets nearly three extra years out of the same money.
solar input
An outage doesn't schedule itself around your weather. On day four, refilling every day through moving cloud, the Anker banks a full charge inside one good window while the EcoFlow is gambling on getting two. Recharge speed is a survival spec, not a convenience spec, and this is the single axis where the Anker's premium buys something the EcoFlow can't match.
SOLIX F3800 PLUS: 3,200W solar input into 3,840WhDELTA Pro 3: 2,000W solar input into 4,096WhReviewers report the 3,200W input is true MC4-compatible input rather than a paper figureB11
Why it mattersIf you're sizing a panel array rather than buying a box off a shelf, this is your override: buy the Anker.
That makes the missing dBA figure a disclosure problem rather than a proven noise problem, and it still decides one buyer. For the person sleeping 18 inches from the unit at 3 a.m., capacity is irrelevant (they'll use under a tenth of it) and the only spec that matters is one manufacturer's willingness to print a number.
EcoFlow publishes 30 dBA for the DELTA Pro 3; Anker publishes no dBA figure for the F3800 PLUSReviewers describe the Anker's fans as barely audible under household loads, loud only above 4,000W or at max-speed chargingB10B12CPAP Overnight consumes 9% of the EcoFlow's usable charge and 10% of the Anker's
Why it mattersBedroom and CPAP buyers take the EcoFlow, not because the Anker is loud but because only one of the two will tell you in writing.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: the cheaper unit here is also the longer-lived one, $0.15 per lifetime kWh against $0.22, and that combination settles the page.
cost / lifetime kWh
Fifteen cents against twenty-two, and the Anker got there by combining the smaller battery with the shorter cycle rating. Neither gap is alarming alone. Together they erase 4,864 kWh of energy you paid for, which is the part no feature on the other side of the table buys back.
How much you should care depends entirely on duty. Cycle daily and the rated lives are 11 years and 8.2, and that gap is the whole ballgame. Cycle it four times a year as hurricane insurance and both are rated past 28 years at weekend duty, so you'll replace them for reasons that have nothing to do with cells. The lifetime math only bites the person who actually uses the thing.
Your Life, Your Pick
Selected because: all six load profiles come out identically for both units, which is what makes the Anker's extra output ceiling impossible to cash in.
Six load profiles and the two units split exactly none of them. Camping, blackout, CPAP, a remote workday, a tailgate: both cover all five, with the EcoFlow holding marginally more in reserve each time because it holds marginally more, period. The heaviest of the five is a camping weekend at 2,100Wh, and that still leaves the EcoFlow 40% of its usable charge on Sunday night.
Van Life Daily is the one that beats them both, and it isn't close. Full-time van power runs 4,685Wh a day, which is 135% of what the EcoFlow can usably deliver and 144% of the Anker. Everybody else is choosing between two units that already do the job, and that is precisely the situation where price and lifespan get to decide instead of watts.
Growth Path
Selected because: the Anker's 3,200W solar input against the EcoFlow's 2,000W is the one spec that can overturn this verdict, and for array builders it does.
solar input
The Anker has the better growth path and solar is the reason: 3,200W of input against 2,000W. Both units take expansion batteries, so neither one traps you at its rated capacity, which leaves the solar ceiling as the only growth spec that genuinely separates them. It separates them in the Anker's favor.
Whether that flips your decision comes down to a question about panels, not batteries. If you already own or plan to own enough array to push past 2,000W, the Anker turns that into a refill measured in one solar window and the EcoFlow can't accept the input to keep up. If your solar plan is a few portable panels leaned against the truck, you'll never feed either ceiling and this section is a tie.
PowerScore Breakdown
Selected because: our own composite scores the Anker about 10% higher, and a verdict going the other way owes you the reason why.
overall power score
Our own composite disagrees with this verdict, which is worth saying out loud rather than quietly omitting. The F3800 PLUS scores 6,265 against the DELTA Pro 3's 5,693, about 10% ahead, and it earns that by rewarding ceilings: more continuous output, more surge, more solar input.
Stack those three advantages against the six loads on this page and they cash out to nothing, because both units already clear every one. The EcoFlow's advantages, more capacity and more cycles at a lower price and lower weight, cash out on all six. The score is measuring the machine. The verdict is measuring what you'll do with it, and only one of those is buying you anything.
What the Specs Don't Tell You
Selected because: weight, switchover speed and one undisclosed noise figure are the small print on a pair of 100-plus-pound boxes.
rated cycles
Both of these are two-person lifts and pretending otherwise is how people hurt their backs. At 112.4 lbs and 132.3 lbs, neither belongs on basement stairs in one pair of hands. The 19.9 lb difference doesn't promote the EcoFlow to a solo carry, it just decides which one you resent more at the bottom of the flight.
The rest of the cards are smaller than they look. Ten milliseconds of switchover against twenty is a real advantage and probably not a decisive one. The undisclosed noise figure is the interesting card, because EcoFlow prints 30 dBA and Anker prints nothing at all, and that's a transparency gap rather than a demonstrated noise gap. It becomes a buying reason in one situation only: when the unit is going where you sleep.
Strengths & trade-offs
EcoFlow DELTA Pro 3
Strengths
- +Lighter by 19.9 lb
- +Larger battery capacity
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Weaker inverter (-2,000W) limits appliance compatibility.
- –Very heavy unit that may be difficult for one person to lift.
Anker SOLIX F3800 PLUS
Strengths
- +Costs $199 less
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Significantly heavier (+19.9 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 Pro 3's 4,000, 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
Neither unit
Both cover the weekend without drama: 2,100Wh is 60% of the EcoFlow's usable charge and 64% of the Anker's, so you're driving home with power to spare either way. Since capacity isn't the question, weight is. 112.4 lbs against 132.3, and you're the one lifting it into the truck twice.
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
Either unit
Both ride out eight hours with roughly half the battery still in reserve, which makes this the wrong test for either unit. If you want a tiebreak, the EcoFlow transfers in 10ms against the Anker's 20ms. Both are fast. Only one is twice as fast.
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 draws 9% of the EcoFlow overnight and 10% of the Anker, so capacity is emphatically not what you're shopping for here. What you're shopping for is the thing humming 18 inches from your head at 3 a.m. EcoFlow publishes 30 dBA for the DELTA Pro 3. Anker publishes nothing for the F3800 PLUS, and beside a bed, a number you can check beats a number you can't.
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, and their USB-C output is a wash — pick on weight, ports, or price.
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
Neither unit
Scoring these two at a tailgate is a category error: neither travels — the DELTA Pro 3 is 112.4 lbs and the SOLIX F3800 PLUS 132.3 lbs, and at those weights they roll off a truck bed if they go anywhere at all. The 670Wh here is trivial for either — it's the going that doesn't happen. If you need power away from the building, you're shopping the wrong class.
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 one does this. Full-time van living runs 4,685Wh a day, which is 135% of what the EcoFlow can usably deliver and 144% of the Anker, so you'd run out before the day did. Both accept expansion batteries, so the honest answer is a second pack, or a proper house bank with a DC-DC charger and roof solar sized to the load.
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 Pro 3 runs 17h vs 15.9h.
$2,799 list · direct from EcoFlow
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 0–232.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–46.4hHigh-Draw Appliances
These reveal the real limitsscale 0–3.5h¹ 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
August 9, 2026
Verdict: the EcoFlow DELTA Pro 3
Take the DELTA Pro 3 at $2,399. It undercuts the SOLIX F3800 PLUS by $101, holds 256Wh more, weighs 19.9 lbs less, and cuts over to battery in 10ms against 20ms. The one that decides it is lifetime energy: 4,096Wh across 4,000 cycles is 16,384 kWh of throughput, while 3,840Wh across 3,000 cycles is 11,520, so the EcoFlow costs $0.15 per lifetime kWh and the Anker $0.22. Everything the Anker charges more for is ceiling — 2,000W more continuous output, 3,000W more surge — and in all six load profiles here, both units already power the peak. Two exceptions, and they're real: if you own something that genuinely draws past 4,000W continuously, or you're feeding a big array and want the Anker's 3,200W solar input against the EcoFlow's 2,000W, buy the Anker and don't look back.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of August 9, 2026. The links below open EcoFlow's and Anker's current prices.
$2,799.00 · direct from EcoFlow
Last checked 1 day ago. Prices move — check before you buy.
or check the SOLIX F3800 PLUS price$2,599.99 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated August 9, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
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 Pro 3 rates 4.0/5 (40th percentile of 16 Home Backup-class units), and SOLIX F3800 PLUS rates 4.5/5 (73rd percentile of 16 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.
Two people. Both times.
112.4 lbs and 132.3 lbs are both well past the point where one person and a good attitude get it down the basement stairs. The EcoFlow's 19.9 lb advantage is real and it does not promote either unit to a solo carry. Pick the spot once, put it there, and budget for a cart if it has to move.
10ms against 20ms: real, probably not decisive
The DELTA Pro 3 cuts over to battery in half the time the SOLIX F3800 PLUS takes, and we're not going to inflate what that buys you. Both transfer faster than the lights can flicker about it. If your decision is hanging on this row, it's hanging on the wrong row.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here.
Battery Lifespan in Real Years
The DELTA Pro 3 is rated for 4,000 cycles vs 3,000. In real life: at daily use, that's 11 vs 8.2 years. At weekend use (twice a week), it's 38 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.
Anker doesn't print a number
EcoFlow rates the DELTA Pro 3 at 30 dBA. Anker publishes no dBA figure for the F3800 PLUS, which is a disclosure gap and not, on its own, evidence that the thing is loud. It matters in exactly one place: put either unit in a bedroom or beside a desk, and one manufacturer lets you check before you buy while the other asks you to find out afterward.
Full record above — the Test Desk pick is the DELTA Pro 3.
Check DELTA Pro 3 price →or check the SOLIX F3800 PLUS 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 F3800 PLUS is cheaper to buy, but the DELTA Pro 3 is cheaper to own. At $0.17/kWh over its lifetime vs $0.23/kWh, the DELTA Pro 3's higher cycle life and capacity make each dollar go further over the years.
Brand trust
EcoFlow
Ecosystem
The deepest catalogue in portable power: 12 to 15 models spanning DELTA Pro, DELTA 3 and RIVER 3, plus panels and smart home panels. Whatever you buy, there's a bigger version of it when you outgrow this one.
Support
US phone, email and chat, and the experiences split hard. Plenty of owners get hassle-free prepaid-label replacements; others report long waits and refurbished units sent against new claims. Buying through Costco or Amazon gives you a return path that doesn't depend on which of those two you draw.
Community
The largest in the category, with roughly 31,000 members in r/Ecoflow_community plus several Facebook groups and an official forum. The practical benefit is that someone has already had your problem and posted the fix.
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
X-Stream fast charging and the widest modular ceiling on the market, up to 180kWh with the DELTA Pro Ultra X. The app rates 4.6 on iOS across about 8,400 ratings, which for this category is unusually good.
Worth knowing
The October 2025 DELTA Max 2000 recall covered overheating and fire risk across six incidents, and EcoFlow tested subscription paywalls on advanced app features in early 2025 before backlash paused the plan. The line that should actually affect your decision: no parts or service out of warranty. On a five-year warranty, year six is a wall.
Anker
Ecosystem
Seven or eight SOLIX stations across the compact C-series and flagship F-series, plus the X1 home energy system. Narrower than EcoFlow's, and the expansion options narrow with it.
Support
US-based, and historically the best story in the category: no-hassle replacements were half the reason people bought Anker at all. Recent reports describe AI-driven agents returning generic responses and complicated return logistics on heavy units, which for a 132.3 lb station means hazmat freight rather than a prepaid label.
Community
Moderate and growing, mostly r/Anker and r/AnkerSOLIXCommunity, riding on enormous consumer-electronics name recognition. It's smaller than EcoFlow's, which is why specific F3800 PLUS answers are harder to find when you need one.
App experience
Rated 4.5/5 iOS (~1,100 ratings) · 4.3/5 Android
Unique strength
Parent-brand trust earned over a decade of chargers and power banks, plus InfiniPower cells built for long cycle life. Worth being precise about the value reputation, though: it rests on the mid-size units like the S2000, F2600 and C1000, not on this one, which lands at $.68 per watt-hour against the DELTA Pro 3's $.59.
Worth knowing
Support quality is trending down from a genuinely excellent baseline, and firmware updates have removed features without warning. Judge the brand on the direction it's heading, not on the goodwill it built selling USB chargers.
Analyst note
Both of these are heavy boxes that will eventually need service, and neither service story is clean. EcoFlow offers no out-of-warranty parts or service at all, so once the five years are up you own an unrepairable 112.4 lb object. Anker's warranty support is still standing but sliding from its old standard, and returning a 132.3 lb unit means hazmat shipping and the patience to arrange it. The practical move for either brand is the same: buy through a retailer with its own returns policy, because that's worth more than the gap between these two support reputations.
Growth path
DELTA Pro 3
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 4,096Wh.
Accepts up to 2,000W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
SOLIX F3800 PLUS
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 3,200W 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
Both expand, but the SOLIX F3800 PLUS's higher solar ceiling (3,200W vs 2,000W) 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 Pro 3
The DELTA Pro 3's field record is thin and it's review-desk material rather than long-term ownership: four entries, drawn from established review sites and retailer listings, none of them a two-years-later reportA1A2A4. Read it as verified on the bench, not verified over years.
What's there is at least consistent. The 4,096Wh LFP pack is rated 4,000+ cycles to 80% with an IP65 battery ratingA2, multi-charge input is reported reaching 0-80% in roughly 50 minutesA3, and reviewers describe it as a gold-standard whole-home backup unitA4. Nothing in the ledger contradicts the spec sheet, which is worth something, but nobody in it has owned the unit through a fifth winter either.
“4,096Wh LFP battery with 4,000W continuous AC output (6,000W with X-Boost) and dual-voltage 120V/240V, expandable to 48kWh.”
Sources
ecoflow.com · amazon.com · homedepot.com · thepowerpick.com · outboundpower.com · techradar.com · thesolarlab.com
Anker SOLIX F3800 PLUS
The Anker's record is deeper and shakier at once, and its ledger is unusually honest about why: a dedicated search for owner threads on the Plus specifically turned up almost nothing, so most of what follows is review-desk testing rather than owner community. The runtime reports are the most useful part. Light duty (fridge, a couple of laptops, an e-bike charge) stretches toward 17 hours, while a fridge and a freezer running together drained the base unit in about sevenB4B5. That's the honest shape of a 3,840Wh battery and the same arithmetic applies to the EcoFlow.
Support is where the entries genuinely diverge, and the divergence is sharper than the average rating would suggest. One owner describes a battery pack making alarming noise and Anker going silent across more than five emailsB1. A reply in that same thread reports fast service including advance replacementB2, though the ledger flags that the reply may describe a different, non-Plus F3800. On noise, reviewers put the fans at barely audible under household loads and loud only above 4,000W or during max-speed chargingB10B12. And the early standby-drain complaints look like a firmware issue rather than a hardware one: Anker shipped an update said to cut idle use by about halfB9, a claim the ledger could not cross-verify against a second independent source.
“I've called them and submitted tickets via their portal, always very responsive. They've even done advanced replacement for me.”
Sources
campingsolar.us · cleanenergybusinesscouncil.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
- Huge 4,096Wh LFP capacity, 4,000W dual-voltage output, very fast charging, and big expandability are the standout praise; it's heavy at ~113 lbs. [DELTA Pro 3 · 2 entries]
- Owner support experiences with Anker/Solix diverge sharply — some report being ghosted after repeated contact attempts over a hardware fault, while others describe fast, responsive advanced-replacement service. [SOLIX F3800 PLUS · 2 entries]
- Real-world runtime drops off steeply with load: light loads (lights, router, occasional laptop/e-bike charging) stretch toward the ~17-hour mark, but running a fridge and freezer together drains the base unit in around 7 hours. [SOLIX F3800 PLUS · 2 entries]
- Fan noise is reported as low/background during normal household loads and only becomes noticeably audible under heavy loads (4,000W+) or max-speed charging. [SOLIX F3800 PLUS · 2 entries]
- The unit's near-137 lb weight is a recurring friction point: reviewers note the wheels/handles work for moderate use but struggle over rough terrain, and aggregated user feedback flags portability and packaging as concerns despite praise for raw performance. [SOLIX F3800 PLUS · 2 entries]
- A1
“4,096Wh LFP battery with 4,000W continuous AC output (6,000W with X-Boost) and dual-voltage 120V/240V, expandable to 48kWh.”
ecoflow.com / amazon.com — DELTA Pro 3 · 2026 · [positive]
- A2
“LiFePO4 rated for 4,000+ cycles to 80% (10+ years), with an IP65 battery rating.”
homedepot.com / thepowerpick.com — DELTA Pro 3 review · 2026 · [positive]
- A3
“Multi-charge technology reaches 0-80% in about 50 minutes using up to 7,000W input, with a full charge in roughly 90 minutes; up to 2,600W solar.”
outboundpower.com / techradar.com — DELTA Pro 3 review · 2026 · [positive]
- A4
“Weighs about 113.5 lbs; reviewers call it a gold-standard whole-home backup unit for 2026.”
techradar.com / thesolarlab.com — DELTA Pro 3 review · 2026 · [positive]
- B1
“I think it may be a fire hazard with this crazy noise it's making. I have emailed Anker support over 5 times... Anker support is ghosting me after I spent over 20k on their solix line and solar panels within a month.”
DIY Solar Forum — "Big issue with Anker Solix F3800 plus battery pack (Large Anker Solix setup)" · 2025-08 · [negative]
- B2
“I've called them and submitted tickets via their portal, always very responsive. They've even done advanced replacement for me.”
DIY Solar Forum — "Big issue with Anker Solix F3800 plus battery pack (Large Anker Solix setup)" (reply from another Solix owner) · 2025-08 · [positive]
- B4
“You would be able to keep a fridge or freezer running, charge a few laptops or phones, maybe charge up an e-Bike and the F3800 Plus base unit would last about 17 hours before needing a recharge.”
Digital Trends — "Anker Solix F3800 Plus review: this power station wins for versatility and value" · 2025-05 · [positive]
- B5
“With both the freezer and my fridge plugged in at the same time, I was about to get 7.34 hours before the unit was completely drained.”
Digital Trends — "Anker Solix F3800 Plus review: this power station wins for versatility and value" · 2025-05 · [mixed]
- B9
“Early reviews focused heavily on the standby drain of the Anker SOLIX F3800 Plus. Anker later released a firmware update that said it can cut idle use by about 50%.”
VoltNest — "Anker SOLIX F3800 Plus Review: My Honest Test Results" · 2026-04 · [mixed]
- B10
“Under normal loads (lights, fridge, TV), the fans are barely audible. It only gets loud when you're pulling over 4,000W or charging at max speed.”
CampingSolar.us — "Anker SOLIX F3800 Plus Review: The Ultimate 240V Home & RV Power" · 2026-02 · [positive]
- B11
“Anker really addressed this issue with the F3800 Plus. You now get a true 3,200W solar input, which is compatible with normal MC4 solar panels.”
TheSolarLab — "Anker SOLIX F3800 Plus Review: Big Power, Big Price?" · unknown · [positive]
- B12
“It doesn't match the whisper-quiet performance of the EcoFlow Delta Pro Ultra, which remains one of the quietest power stations we've ever tested, but the F3800 Plus is still surprisingly quiet, even when you're really pushing it.”
TheSolarLab — "Anker SOLIX F3800 Plus Review: Big Power, Big Price?" · unknown · [positive]
Research compiled August 9, 2026.
What Owners Actually Report
Drawn from 70 comments on independent review channels — not from retailer reviews, which skew to the first week of ownership. Each line is our summary of one commenter's claim, linked to the original. We record what they said, including where it contradicts the spec sheet.
EcoFlow DELTA Pro 3
74 claims from 50 comments · 50 from owners · 22 with figures
- Charging
- 8 · 30% negative
- Runtime
- 7 · 0% negative
- Price & value
- 11 · 3% negative
- Expandability
- 7 · 97% negative
- Warranty & support
- 8 · 69% negative
What owners complain about
His DP3 can only charge from an external 120V source while outputting 240V.
Chargingowner7 agreedsource →
At almost 120 lb he would not call the DP3 portable.
Size & weightmeasuredowner3 agreedsource →
Regrets buying the DP3 over the F3800 because it lacks 240V passthrough.
Expandabilityowner4 agreedsource →
What owners praise
Recharges in about 70 minutes at 3400W from a 240V generator inlet.
Chargingmeasuredowner57 agreedsource →
Ran lights, fans, modem, fridge and a 1300W air conditioner through a 5-day hurricane outage.
Runtimemeasuredowner30 agreedsource →
Costco sells a DELTA Pro 3 twin pack at $4,999, dropping to $4,499 on sale.
Price & valuemeasuredowner6 agreedsource →
Anker SOLIX F3800 PLUS
32 claims from 20 comments · 18 from owners · 4 with figures
- Solar input
- 4 · 0% negative
- Price & value
- 3 · 44% negative
- Expandability
- 5 · 77% negative
- Charging
- 4 · 15% negative
- Inverter & surge
- 3 · 88% negative
What owners complain about
F3800 Plus shuts down above 20A charging from the battery expansion port; 16A is stable.
Expandabilitymeasuredowner1 agreedsource →
Could not start two 240V hoist pumps or a well pump; motors shudder and the unit shuts off.
Inverter & surgeowner4 agreedsource →
Returned within 48 hours; would only have kept it at half the price.
Price & valueowner4 agreedsource →
What owners praise
Anker tech support was friendly, a native English speaker, and taught him things he didn't know.
Warranty & supportowner13 agreedsource →
Generator recharged it from 15% to full in under an hour while powering the house.
Chargingmeasuredowner4 agreedsource →
Got an F3800 Plus with an expansion battery and home backup kit for $4,200.
Price & valuemeasuredowner3 agreedsource →
Claims are weighted by how specific they are, whether the commenter owns the unit, and how many readers agreed. Comments that mention a product under a rival's review count for more, because the commenter had no reason to be there. This is what buyers report, not our test results — for measurements we ran ourselves, see the methodology.
Who Should Buy Which
Buy the DELTA Pro 3 if you…
- →You're buying blackout insurance for a fridge, a furnace fan, the router and some lamps, and you want the box that's still doing it in a decade. 4,000 cycles and a rated 11 years at daily use, for $2,399.
- →You cycle it every day for solar self-consumption or off-grid living. This is where 16,384 kWh of lifetime throughput against 11,520 stops being trivia and starts being money.
- →The unit is going in a bedroom or next to a desk. EcoFlow rates it at 30 dBA and Anker won't say, and when you're 18 inches away that asymmetry is the spec.
- →You'll have to reposition it occasionally. Both are two-person lifts, but 112.4 lbs is meaningfully less awful than 132.3.
Buy the SOLIX F3800 PLUS if you…
- →You can name the load: a well pump, a 240V compressor, a shop tool that pulls past 4,000W continuously. 6,000W continuous and 9,000W surge is the reason this unit exists, and the EcoFlow can't do it at any price.
- →You're building a real array, not leaning two panels against a truck. 3,200W of solar input refills the whole 3,840Wh bank in about 1.2 hours of rated sun against roughly two for the EcoFlow, and on day four of an outage that's the spec that keeps you running.
If neither fits
Full-time van dwellers should close this tab: 4,685Wh a day is 135% of the EcoFlow's usable capacity and 144% of the Anker's, and a box on the floor is the wrong shape for that job. Look at a house bank with a DC-DC charger and roof solar sized to the load. Separately, if all you actually want is to keep a fridge and some phones alive through an eight-hour outage, that's 1,645Wh, under half of either unit, and you're shopping two sizes too large. Buy something smaller and put the difference toward panels.
The Bottom Line
Take the DELTA Pro 3. It costs $101 less, holds 256Wh more, weighs nearly twenty pounds less, switches over in half the time, and moves 42% more energy across its rated life than the unit across the table. Every one of those advantages applies to all six loads on this page. The Anker's advantages apply to none of them, which is a strange thing to say about the higher-scoring machine and is exactly why the score isn't the verdict.
Hold onto the exception, though, because it's real. If you're feeding this from a serious array, 3,200W of solar input against 2,000W refills the Anker in roughly half the time, and on day four of an outage that matters more than anything else on this page. Buy the Anker if you're building the array, or if you own something that genuinely pulls past 4,000W. Otherwise the cheaper box is also the better one, and that doesn't happen often enough to walk past.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the Anker SOLIX F3800 Plus worth the extra money over the EcoFlow DELTA Pro 3?
Only if you can name the appliance that needs it. The $101 premium buys 2,000W more continuous output, 3,000W more surge and 1,200W more solar input, and across all six load profiles we model, both units already power the peak. If you're backing up a fridge, some lights and electronics, you're paying for ceilings you won't reach and carrying 19.9 extra pounds to own them.
Which one lasts longer?
The DELTA Pro 3, by a wide margin. It's rated for 4,000 cycles against the Anker's 3,000 and it carries a larger battery while doing it, so lifetime throughput works out to 16,384 kWh versus 11,520. At daily cycling that's a rated 11 years against 8.2, which is why it costs $0.15 per lifetime kWh and the Anker costs $0.22.
Can either of these run a whole house?
Both are built for it, at 4,000W continuous on the EcoFlow and 6,000W on the Anker, each backed by a 5-year warranty. What neither will do is run a full-time van at 4,685Wh a day, which needs 135% of the EcoFlow's usable capacity and 144% of the Anker's. Whole-home backup through an outage, yes. Whole-home off-grid living from one box, no.
Which one is quieter?
EcoFlow rates the DELTA Pro 3 at 30 dBA. Anker publishes no dBA figure for the F3800 PLUS at all, so there's nothing to hold it against. Reviewers describe the Anker's fans as barely audible under normal household loads and loud only above 4,000W or during max-speed charging, which suggests it's fine in practice. If it's going in a bedroom, the published number is still the safer bet.
How fast do they recharge from solar?
The Anker wins this one clearly. It takes 3,200W of solar into a 3,840Wh battery, so a full refill is about 1.2 hours at rated input, while the EcoFlow takes 2,000W into 4,096Wh for about two hours. In a multi-day outage where you're refilling every day around moving cloud, that's the strongest argument the F3800 PLUS has.
Where to buy
EcoFlow DELTA Pro 3Pick
$2,799.00
$2,799.00 · direct from EcoFlow
Last checked 1 day ago. Prices move — check before you buy.
Anker SOLIX F3800 PLUS
$2,599.99
$2,599.99 · direct from Anker
Last checked 1 day ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.