Head-to-head test
EcoFlow DELTA Pro vs Anker SOLIX F3800
The F3800 costs $1,300 more than the DELTA Pro for just 240Wh of extra capacity — what that money actually buys is 2,400W more continuous output and 1,800W more surge, headroom most buyers here will never load-test.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
EcoFlow
DELTA Pro
5,338Power Score · The AC & Fridge Zone
$1,599.00 list · direct from EcoFlow
Anker
SOLIX F3800
6,237Power Score · The AC & Fridge Zone
$1,999.99 list · direct from Anker
Spec deltas
The Anker SOLIX F3800 costs $1,300 more than the DELTA Pro — $2,699 against $1,399 — for just 240Wh of extra capacity. Almost double the price for a rounding error in Wh is the first thing worth knowing about this matchup.
What the extra money buys is real, just not capacity: 2,400W more continuous output, 1,800W more surge, and an 800W higher solar ceiling. It also buys 33.3 more pounds and, per owner reports, a solar input restrictive enough that some describe it as usable only when there's no other way to chargeB1.
Across camping, blackout, remote-work, and tailgate scenarios, the two units land within single digits of each other on how much of their own capacity gets used. The gap that matters here isn't capacity — it's whether you need the F3800's bigger inverter badly enough to pay for it.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
The scenario data backs this up: Weekend Camping runs at 69% of the Pro's capacity and 64% of the F3800's, an 8-Hour Blackout at 54% against 50% — both comfortably cover the same jobs. The extra 240Wh almost never becomes the deciding factor in whether a scenario finishes.
DELTA Pro: 3,600Wh for $1,399SOLIX F3800: 3,840Wh for $2,699
Why it mattersBuyers drawn to the F3800 for capacity alone are paying for the wrong spec — the real product is the inverter, not the battery.
continuous output
That headroom arrives bundled with a real flaw in how you refill it: owners describe the solar input as restrictive enough to effectively require Anker's own panels, calling generic arrays "very difficult to use" with the F3800B2B13. A unit built for bigger jobs that's harder to recharge off-grid than its 2,400W solar ceiling suggests.
DELTA Pro: 3,600W continuous, 7,200W surgeSOLIX F3800: 6,000W continuous, 9,000W surge
Why it mattersAnyone buying the F3800 for its bigger inverter should budget for Anker-branded solar panels specifically, not assume the higher wattage ceiling is a free upgrade.
weight
One F3800 owner put the real weakness plainly: it's "almost inaudible during regular use... until you try to lift it"B11. At 132.3 lbs, quietness is almost beside the point; the spec that actually governs how this unit gets moved is the one nobody puts a decibel rating on.
DELTA Pro: 99 lbsSOLIX F3800: 132.3 lbs
Why it mattersBuyers without a permanent spot for it — a shed, a fixed RV bay — should weigh the 33.3-lb gap as seriously as the output numbers.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: The $1,300 price gap for 240Wh of extra capacity is the central number on this page.
cost / lifetime kWh
$2,699 against $1,399 is a $1,300 gap for 240Wh of extra capacity. It shows up starkly in cost per lifetime kWh — twenty-three cents for the F3800 against eleven for the Pro — and in cost per warranty year, $540 against $280, almost exactly double.
Every lifetime-cost figure here points the same direction. The F3800 isn't competing with the Pro on value; it's a different price tier that happens to sit next to it on a spec sheet.
PowerScore Breakdown
Selected because: The F3800's actual case — 2,400W more output and 1,800W more surge — lives here, not in capacity.
overall power score
This is where the F3800's price starts making sense. 6,000W continuous against the Pro's 3,600W, and 9,000W surge against 7,200W, is real headroom for loads the Pro's inverter can't touch — a table saw, an RV AC compressor, a welder.
For the scenarios this site actually tests — camping, blackouts, remote work, tailgating — neither unit's inverter ceiling gets close to being the limiting factor. The F3800's extra power only matters if your real load exceeds 3,600W continuous.
Portability & Form Factor
Selected because: 33.3-lb gap on top of an already-heavy Pro pushes the F3800 into two-person territory.
weight
132.3 lbs against 99 lbs is a 33.3-lb gap stacked on top of a unit that already ships with wheels out of necessity. This isn't a solo carry for either one, but the F3800 pushes further into dedicated-cart, semi-permanent territory.
If it's living in one spot — a garage, an RV bay — the extra weight barely registers. If it needs to move around a property or in and out of a vehicle regularly, that's 33.3 more pounds every time.
What the Specs Don't Tell You
Selected because: Surge-ratio advantage, weight warning, and warranty-value flags all fire with real signal.
rated cycles
The surge-ratio flag favors the F3800 here — 9,000W against the Pro's 7,200W is a genuine inverter-quality edge for starting large loads. Weight fires as a warning rather than just informational this time, and the warranty-value comparison lands the same place as the lifetime-cost numbers: $540 per warranty year against $280.
Neither brand discloses a noise figure for the F3800, while the Pro's 60dB rating is at least known, if unflattering.
Growth Path
Selected because: F3800's higher solar ceiling comes with a real owner-reported caveat worth surfacing.
solar input
On paper, the F3800 has the stronger off-grid growth path — an 800W higher solar ceiling, 2,400W against the Pro's 1,600W. Both units take brand-specific expansion batteries, so neither is a dead end.
The caveat is real, not theoretical: owners consistently describe the F3800's solar input as restrictive, pushing buyers toward Anker's own panels for a "full up" configurationB1B2B14. A higher ceiling on paper is worth less if reaching it means a narrower shopping list.
Strengths & trade-offs
EcoFlow DELTA Pro
Strengths
- +Costs $401 less
- +Lighter by 33.3 lb
Trade-offs
- –Weaker inverter (-2,400W) limits appliance compatibility.
- –Very heavy unit that may be difficult for one person to lift.
- –Can receive complaints about fan noise under heavy load.
Anker SOLIX F3800
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Significantly heavier (+33.3 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
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
Either unit
Both handle this comfortably and land close together — 69% for the Pro, 64% for the F3800. This isn't the scenario that justifies a $1,300 price gap; decide on inverter needs instead.
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 survive the blackout with similar margin. Since the capacity difference doesn't matter here, focus on which unit has UPS mode — seamless switchover protects your router and PC from the split-second power gap.
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
Both are wildly overqualified for CPAP. You're using 10% or less. Save your money and buy whichever is cheaper; the extra capacity is completely wasted on a 40W overnight load. Put the savings toward a second battery for multi-night trips.
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 breaking a sweat. At these utilization levels, prioritize the unit with better USB-C output for direct laptop charging. It's more convenient than using the AC inverter 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
Either unit
Both handle game day easily. Since capacity isn't the deciding factor, consider weight: the lighter unit is easier to load into a truck bed. Also check if either has Bluetooth speaker-level noise. Fan sound matters in social settings.
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 finishes a full day of van-life-level draw on its own charge — the Pro needs 153% of what it holds, the F3800 needs 144%. Even the bigger, pricier unit comes up short here.
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 six 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 14.9h.
$1,999.99 list · direct from Anker
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
July 14, 2026
Verdict: the EcoFlow DELTA Pro
Take the DELTA Pro unless you specifically need to run something past 3,600W continuous. The F3800 costs $1,300 more — almost double the Pro's price — for only 240Wh of extra capacity, and across five of six load scenarios the two units land within single digits of each other on percent-of-capacity used. What the F3800 actually sells is a bigger inverter (6,000W against 3,600W) and 1,800W more surge, plus 33.3 more pounds and a solar input owners describe as restrictive enough to effectively require Anker's own pricier panelsB1B2. That's a real product for workshop-scale loads. For camping, blackouts, and remote work, it's $1,300 buying headroom you won't use.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 14, 2026. The links below open EcoFlow's and Anker's current prices.
$1,599.00 list · direct from EcoFlow
or check the SOLIX F3800 price$1,999.99 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 14, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS.
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 rates 3.9/5 (33rd percentile of 16 Home Backup-class units), and SOLIX F3800 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.
132.3 lbs Is a Two-Person Number
This isn't a spec you carry solo, and the F3800 is 33.3 lbs past a Pro that already needed wheels. If it's not living somewhere permanent, plan for a cart or a second set of hands.
DELTA Pro: 60dB Under Load
60dB is about as loud as a normal conversation. If you're running a CPAP or sleeping near this unit, the fan noise may be noticeable. Most people find anything above 45dB disruptive for sleep.
9,000W Against 7,200W
This is the F3800's real argument, not its capacity. If your loads genuinely spike past the Pro's 7,200W surge ceiling, this is the number that settles it.
SOLIX F3800: Noise Level Not Disclosed
The DELTA Pro publishes its noise level (60dB), but the SOLIX F3800 doesn't. Brands that don't disclose noise specs often have louder units. If noise matters to you (CPAP users, apartment dwellers), this is worth investigating before buying.
Full record above — the Test Desk pick is the DELTA Pro.
Check DELTA Pro 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 Pro wins on both sticker price and long-term value. At $0.13/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
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. Supports up to 180kWh modular expansion with DELTA Pro Ultra X.
Worth knowing
The Oct 2025 DELTA Max 2000 recall (overheating/fire risk, 6 incidents) is worth noting. Also 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 runs the larger ecosystem and community, with support that's polarized but broadly accessible. Anker's SOLIX line carries the parent brand's consumer-electronics trust, though SOLIX-specific support quality is reportedly trending down as return logistics for heavier units get more complicated — worth weighing against a unit that already weighs 132.3 lbs.
Growth path
DELTA Pro
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,600Wh.
Accepts up to 1,600W 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
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
Both expand, but the SOLIX F3800's higher solar ceiling (2,400W vs 1,600W) 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
The DELTA Pro is heavy enough that its integrated wheels are doing real work rather than offering a convenience — best on flat, smooth ground, with a cart recommended for anything unevenA2. It's earned its reputation as a home-backup platform the hard way: owners report it holding up as primary backup across multiple overnight outages spanning months, running a fridge, lighting, and a space heater at onceA1A3.
The recurring knock is fan noise past roughly 2,000W — a noticeable high-pitched whine, distracting in a quiet room, though it stays quiet enough at lighter loadsA4.
“Long regarded as a gold standard for home backup — designed for high-draw appliances and full-scale battery expansion, running home essentials like a fridge, lighting, and a space heater through outages.”
Sources
backuppowerhub.com · us.ecoflow.co · outdoorgearlab.com · bobvila.com · powerstationadvisor.com · robbsutton.com
Anker SOLIX F3800
The clearest pattern in F3800 owner reports is frustration with the solar input — one owner said they're "only using it if there is no other way to charge"B1, and another described the input limitations as effectively locking buyers into Anker's own pricier panelsB2. AC charging at full 1,800W rate reportedly runs the line cord hot enough that one owner backed off to 600-800WB3, and there's no passthrough — you can't charge from AC while dischargingB4.
Against that, real owners report it runs everything they throw at it, including a water pump, off a single 120V outlet through a transfer switchB5, and fan noise is generally quiet at idle with occasional buzzing under heavy loadB6B11B12. Support experiences are polarized — some describe fast, responsive replacementsB9, one describes being ignored after a large purchaseB8 — and one owner's verdict on the F3800 was blunt: "zero issues — especially compared to the EcoFlow firmware issues I fought with for months"B10.
“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
- Established home-backup platform with wheeled portability and massive expandability; the consistent knock is fan noise under heavy load. [DELTA Pro · 3 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
“Long regarded as a gold standard for home backup — designed for high-draw appliances and full-scale battery expansion, running home essentials like a fridge, lighting, and a space heater through outages.”
backuppowerhub.com / us.ecoflow.com — EcoFlow DELTA Pro review · 2025-2026 · [positive]
- A2
“Heavy but wheeled — integrated wheels and a telescoping handle help move its considerable weight, though they work best on flat, smooth surfaces; a cart is needed for uneven ground.”
outdoorgearlab.com / bobvila.com — DELTA Pro-line review · 2025-2026 · [mixed]
- A3
“Reliable through extended outage use — served as primary backup across multiple overnight outages over months, powering essentials simultaneously; LFP battery rated for thousands of cycles and 10+ years of daily use.”
powerstationadvisor.com / robbsutton.com — DELTA Pro-line review · 2025-2026 · [positive]
- A4
“Not silent under heavy load — under 2000W-plus draws the fans emit a noticeable high-pitched whine that's distracting in a quiet room, though it runs quietly enough at lighter loads.”
outdoorgearlab.com — DELTA Pro-line noise testing · 2025-2026 · [negative]
- 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]
- B3
“if you charge the F3800 from a 120VAC wall outlet at full rate (1800 watts), the line cord gets very hot. I've backed off the charge rate to 600-800 watts.”
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]
- B6
“I have 4 BP3800s and one of them made similar buzzing/rattling noise when a heavy AC load was starting up... only for around a second while inverter was ramping up.”
diysolarforum.com — 'Big issue with Anker Solix F3800 plus battery pack' · 2025-08 · [mixed]
- 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]
- B10
“I've had zero issues - especially compared to the EcoFlow firmware issues I fought with for months.”
diysolarforum.com — 'Anker solix f-3800 diy solar array' · 2024-02 · [positive]
- B11
“producing between 50 and 60 decibels when engaged, making it almost inaudible during regular use... until you try to lift it, that is.”
thesolarlab.com — 'Anker SOLIX F3800 Review: Did It Kill the Competition?' · unknown · [positive]
- B12
“Sometimes the fans are completely silent, then they kick in and out intermittently.”
thesolarlab.com — 'Anker SOLIX F3800 Review: Did It Kill the Competition?' · unknown · [mixed]
- 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 July 14, 2026.
Who Should Buy Which
Buy the DELTA Pro if you…
- →You want the better value — $1,300 less for nearly the same usable capacity across every scenario this site tests.
- →You don't have a load that regularly exceeds 3,600W continuous, so the F3800's bigger inverter is headroom you'd never use.
Buy the SOLIX F3800 if you…
If neither fits
If your real need is full daily power for van life or similar, neither wins outright — the Pro needs 153% of its own capacity and the F3800 needs 144%. Both come up short; look at a stacked or hardwired system sized for continuous daily draw.
The Bottom Line
The F3800 isn't a bad unit — it's a different one. It's built for loads past 3,600W continuous, and owners confirm it handles them, buzzing and hot charging cords aside. But it costs $1,300 more than the Pro for 240Wh of extra capacity, and across the scenarios that matter to most buyers here, the two land within single digits of each other.
Take the DELTA Pro unless you already know your load exceeds its 3,600W ceiling. If it does, the F3800 earns its price; if it doesn't, you're paying almost double for headroom you'll never use.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the Anker SOLIX F3800 worth $1,300 more than the EcoFlow DELTA Pro?
Only if you need its bigger inverter. The F3800 holds just 240Wh more capacity than the Pro, but delivers 2,400W more continuous output and 1,800W more surge — real value for large loads, not for typical camping or blackout use.
Does the F3800's higher solar ceiling actually help you charge faster off-grid?
On paper it's an 800W higher ceiling than the Pro's, but owners consistently report the input is restrictive and effectively pushes you toward Anker's own solar panels to use it fully. Budget for that if the higher ceiling is part of the appeal.
How much heavier is the F3800 than the DELTA Pro?
33.3 lbs — 132.3 lbs against 99 lbs. Both need wheels or a cart to move comfortably; the F3800 just needs them a little more.
Which one is cheaper to own over time?
The DELTA Pro, clearly. It runs eleven cents per lifetime kWh against the F3800's twenty-three, and $280 per warranty year against $540 — close to double on both measures.
Where to buy
EcoFlow DELTA ProPick
$1,599.00
$1,599.00 list · direct from EcoFlow
Anker SOLIX F3800
$1,999.99
$1,999.99 list · direct from Anker
Prices may vary by retailer and are subject to change.