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Head-to-head test

EcoFlow DELTA Pro vs Anker SOLIX F2600

The pricing flipped hard: the SOLIX F2600 is now $599 cheaper than the DELTA Pro, not $100 more. The Pro still holds 1,040Wh more capacity and far more surge, but you now pay a big premium — plus 28.5 extra pounds and a louder fan — for it. For most buyers, the cheaper, lighter, quieter F2600 is the better default.

Written by Gunner GustafsonUpdated

Whole-Home Backup Tester, Station Arena Test Desk

Stack these against 100+ rivals
MethodologyReader-supported — we may earn from links (details)
EcoFlow DELTA Pro Portable Power Station

EcoFlow

DELTA Pro

3,600Wh3,600W99 lb

5,338Power Score · The AC & Fridge Zone

Check price →

$1,599.00 list · direct from EcoFlow

Anker SOLIX F2600 Portable Power Station

Anker

SOLIX F2600

2,560Wh2,400W70.5 lb

4,326Power Score · Appliance Class

Check price →

$999.99 list · direct from Anker

Spec deltas

Capacity
3,600Wh
2,560Wh
Output
3,600W
2,400W
Weight
99 lb
70.5 lb
Price
$1,599
$1,000
Cost / Wh
$0.44
$0.39
Cycle life
3,500
3,000
Solar input
1,600W
1,000W
01

The pricing on these two has flipped hard. The SOLIX F2600 is now $999.99; the DELTA Pro has risen to $1,599 — so the Pro is $599 more expensive, where it used to be the cheaper unit. It still holds 1,040Wh more capacity (3,600 vs 2,560Wh), but that capacity is no longer a bargain.

The lifetime-cost math has closed too. The Pro's 500 extra cycles and larger battery spread its higher price out, but so does the F2600's much lower sticker — the two now land within a cent of each other, around $0.13 per lifetime kWh, where the Pro used to be far ahead. Owners praise the F2600's inverter for everyday loads and call its app and charging speed a strong pointB1B3.

The DELTA Pro's real cards now are capacity and surge — 1,040Wh more and a 7,200W ceiling against 2,800W. But it's 28.5 lbs heavier and, by its own disclosed 60dB rating, louder. For most buyers the F2600's $599 saving, lighter body, and quieter operation outweigh what the Pro adds.

02

What the Numbers Reveal

Each conclusion stated first — the numbers behind it on one line, the full analysis below.

F1

Capacity

The Pro's extra capacity and 500 extra cycles used to come at a lower price; now they come at a $599 premium, which pulls the lifetime-cost advantage back to a near-tie (about $0.13 per kWh either way) instead of the near-double gap it once showed.

DELTA Pro: 3,600Wh for $1,599SOLIX F2600: 2,560Wh for $999.99

Why it mattersAnyone comparing these on sticker price now sees the real story: the F2600 saves $599 up front, and the Pro no longer makes that back over its life.

F2

continuous output

Owners praise the F2600 for "ample inverter power" in day-to-day useB3, so the gap isn't about running things — it's about starting them. Fridges, well pumps, and other compressor loads spike 2 to 3 times their rated draw for a second at power-on, and that's exactly where a smaller surge ceiling gets exposed.

DELTA Pro: 7,200W surge, 3,600W continuousSOLIX F2600: 2,800W surge, 2,400W continuous

Why it mattersBuyers planning to run compressor-driven appliances should size to surge wattage — and if that's you, the Pro's 4,400W more is worth its premium; if it isn't, you're paying $599 for headroom you won't use.

F3

Multiple F2600 owners independently describe it as quiet in practiceB3, which is the rare case where the undisclosed spec may actually be the better one — you're trading a known bad number for an unknown one that owner reports suggest is good.

DELTA Pro: 60dB noise ratingSOLIX F2600: noise rating not disclosed

Why it mattersBuyers with a noise-sensitive space — a bedroom, an apartment, a shared campsite — should weigh owner testimony here over the Pro's disclosed 60dB, another point for the now-cheaper F2600.

The specific dimensions that decide these two units — everything else is a tie.

Lifetime Value

Selected because: Pro is bigger but now pricier; the F2600's $599 lower price reshapes the value case.

cost / lifetime kWh

The value case has turned over. The DELTA Pro now costs $599 more up front ($1,599 vs $999.99), and its longevity edge only closes that to a near-tie on lifetime cost — about $0.13 per kWh either way, where it used to be eleven cents against twenty. Cost per warranty year now runs $200 for the F2600 against $320 for the Pro.

So there's no longer an angle where the Pro wins on cost. Its larger battery and extra cycles are real, but the F2600's much lower price cancels the lifetime math and wins the up-front one outright.

Your Life, Your Pick

Selected because: Pro's larger battery uses less of its capacity per job; the rest are close or both-fail.

The Pro's bigger battery still shows up in the load scenarios: it uses less of its capacity for the same job — Weekend Camping at 69% against the F2600's 97%, an 8-Hour Blackout at 54% against 76%, a Remote Workday at 30% against 42%. If you routinely push near a 2,560Wh unit's limit, that headroom is the Pro's genuine advantage.

CPAP Overnight and Tailgate Party are close enough that either handles them without drama. Van Life Daily is the one scenario where neither wins: both need well over their own capacity, at 153% for the Pro and 215% for the F2600. So the scenarios show what the Pro's extra $599 buys — margin — not a value win; for lighter loads the cheaper F2600 covers the same jobs.

What the Specs Don't Tell You

Selected because: Surge-ratio advantage and the noise-disclosure gap both add real, non-overlapping evidence.

rated cycles

The surge-ratio gap is still the Pro's standout: its 7,200W surge ceiling is more than double the F2600's 2,800W, a real inverter-quality signal for anyone starting compressor loads. Set against that, the Pro's own 60dB noise rating is a known weak spot, while Anker hasn't disclosed a figure for the F2600 — which owners describe as quiet.

Weight and price now both tip toward the F2600 — it's 28.5 lbs lighter and $599 cheaper — so the flags in its favor outnumber the Pro's surge edge. The Pro wins where you specifically need surge or capacity; the F2600 wins the everyday trade-offs.

Growth Path

Selected because: Both expand, but the Pro's higher solar ceiling gives it a stronger off-grid growth story.

solar input

Both units take expansion batteries from their own brand, so neither is a dead end if your needs grow. The difference is the solar ceiling feeding that growth: the Pro accepts up to 1,600W against the F2600's 1,000W, a 600W gap that matters more the bigger your off-grid setup gets.

For a buyer adding panels over time rather than all at once, that headroom compounds — the Pro can keep absorbing more solar long after the F2600 has hit its input ceiling.

Strengths & trade-offs

EcoFlow DELTA Pro

Strengths

  • +Larger battery capacity
  • +Higher AC output
  • +Faster solar charging

Trade-offs

  • Substantially more expensive (+$599) than the SOLIX F2600.
  • Significantly heavier (+28.5 lbs), making it harder to move.
  • Very heavy unit that may be difficult for one person to lift.
  • Can receive complaints about fan noise under heavy load.

Anker SOLIX F2600

Strengths

  • +Costs $599 less
  • +Lighter by 28.5 lb

Trade-offs

  • Weaker inverter (-1,200W) limits appliance compatibility.
03

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 Pro

The SOLIX F2600 cuts it close at 97%. One cold night or an unexpected device and you're rationing power. The DELTA Pro finishes at 69%, leaving real headroom for spontaneous use. If you camp in variable weather, that buffer keeps you relaxed instead of checking your battery app every 20 minutes.

Camping power station guide

Battery budget usedlower = more headroom

LOAD  Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h

SCN-02 · 8 hours · needs 1,645Wh

8-Hour Blackout

Keep the essentials running through a night without power

DELTA Pro

Both survive, but the DELTA Pro finishes at just 54% used. That's enough reserve for a second blackout night. The SOLIX F2600 at 76% leaves little margin if the outage runs longer than expected. In storm-prone areas, that remaining capacity is insurance.

Emergency blackout power guide

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 15% 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

DELTA Pro

The DELTA Pro gives you a comfortable buffer at 30%. Enough to work late, join extra video calls, or charge a second device without worry. The SOLIX F2600 at 42% works but leaves less room for the unexpected. For daily remote work, that peace of mind matters.

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 unit can fully handle this scenario (needs 4,685Wh). You'd need a higher-capacity station or to cut back on usage.

RV & van-life power guide

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

DELTA Pro14.9h
54% of usable battery in 8h
SOLIX F260010.6h
75% of usable battery in 8h

For this load: DELTA Pro runs 14.9h vs 10.6h.

Check DELTA Pro price →

$1,599 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 0–204h
ApplianceDELTA ProSOLIX F2600
CPAP Machine40W draw
DELTA Pro: 76.5h9 full nights
SOLIX F2600: 54.4h6 full nights
Phone Charger15W draw
DELTA Pro: 204h
SOLIX F2600: 145.1h
Router + Modem20W draw
DELTA Pro: 153h
SOLIX F2600: 108.8h
Starlink75W draw
DELTA Pro: 40.8h
SOLIX F2600: 29h
LED Lights (4 bulbs)40W draw
DELTA Pro: 76.5h
SOLIX F2600: 54.4h
Laptop (Working)60W draw
DELTA Pro: 51h
SOLIX F2600: 36.3h

Comfort & Convenience

Makes off-grid life actually enjoyablescale 0–40.8h
ApplianceDELTA ProSOLIX F2600
Box Fan75W draw
DELTA Pro: 40.8h
SOLIX F2600: 29h
LED TV (55")80W draw
DELTA Pro: 38.3h
SOLIX F2600: 27.2h
Mini-Fridge150W draw
DELTA Pro: 20.4h
SOLIX F2600: 14.5h
Electric Blanket200W draw
DELTA Pro: 15.3h1 full night
SOLIX F2600: 10.9h1 full night

High-Draw Appliances

These reveal the real limitsscale 0–3.1h
ApplianceDELTA ProSOLIX F2600
Coffee Maker1000W draw
DELTA Pro: 3.1h
SOLIX F2600: 2.2h
Microwave1200W draw
DELTA Pro: 2.6h
SOLIX F2600: 1.8h
Space Heater1500W draw
DELTA Pro: 2h
SOLIX F2600: 1.5h

¹ 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 Anker SOLIX F2600

For most buyers, the SOLIX F2600. The DELTA Pro's old thesis — cheaper AND bigger — has collapsed: the Pro now costs $599 MORE ($1,599 vs $999.99), and the lifetime-cost gap that used to favor it has closed to a near-tie (about $0.13 per kWh either way). What the Pro still buys you is real — 1,040Wh more capacity (3,600 vs 2,560Wh) and a much higher 7,200W surge against the F2600's 2,800W — but it pays for that with 28.5 more pounds (99 vs 70.5) and a disclosed 60dB whine past ~2,000WA4, where owners call the F2600 quiet in practiceB3. At $599 less, 28.5 lbs lighter, and quieter, with an adequate 2,560Wh that expands to 4,608Wh, the F2600 is the better default. The DELTA Pro stays the right pick if you specifically need its extra capacity or its surge headroom for compressor loads.

■■■■■■■□□□7/10

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.

Check SOLIX F2600 price

$999.99 list · direct from Anker

or check the DELTA Pro price$1,599.00 list

Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 14, 2026

04

Measured Data

Benchmark scores and the full spec record, side by side.

Benchmark scores

DELTA ProSOLIX F2600
Overall Power Score
5,338
4,326
UPSResponse & Reliability
3,750
3,354
RV LivingEnergy Density & Output
5,266
4,135
Home BackupCapacity & Resilience
5,176
4,204
Solar GeneratorSolar Input & Efficiency
4,986
3,999
Food TruckSustained Heavy Output
5,237
4,010

Not rated for both units (minimum threshold unmet): Tailgating.

Full specifications

DELTA Pro
$1,599
Updated Jul 20
See live price →
SOLIX F2600
$999.99★ our pick
Updated Jul 20
See live price →
Capacity (Wh)
3600
2560
Output (W)
3600
2400
Surge Peak
7200W
2800W
AC Outlets
5
5
USB-C Charging Outputs
100W
100W
Solar Input (W)
1600
1000

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 F2600 rates 4.0/5 (42nd percentile of 25 Large-class units).

How the class ranking is computed →

Test Notes & Caveats

Hidden gotchas and advantages we spotted that you won't find on the product page.

[NOTE]

Weight Reality Check

Neither unit is grab-and-go. The SOLIX F2600 (70.5 lbs) is manageable solo but heavier than a large checked suitcase. The DELTA Pro (99 lbs) is noticeably heavier. That's a 29 lb difference.

[CAUTION]

The Pro's Own Weak Spot

60dB under load is a real, disclosed number, and it's on the loud side. It's worth crediting the F2600 here even without an official figure — owner reports lean toward it being the quieter of the two in practice.

[ADVANTAGE]

7,200W Against 2,800W

The Pro's surge ceiling is more than double the F2600's. That's the number that matters for starting a fridge or well pump, not the continuous-output figure most spec sheets lead with.

[NOTE]

Warranty Value Comparison

The SOLIX F2600 gives you 5 years of warranty per $1,000 spent, vs the DELTA Pro's 3.1 years. That's 1.6× more coverage per dollar. An underrated factor if you're keeping this unit for years.

[CAUTION]

SOLIX F2600: No Published Figure

Anker hasn't put a decibel number on the F2600. Owner accounts describe it as quiet, but that's testimony, not a spec you can hold the company to.

Full record above — the Test Desk pick is the SOLIX F2600.

Check SOLIX F2600 price →or check the DELTA Pro price
05

Ownership Analysis

What happens after you buy — true cost of ownership, brand trust, and growth potential.

Lifetime value

DELTA ProSOLIX F2600

│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.

DELTA Pro
SOLIX F2600
Purchase price
$1,599.00
$999.99
Lifetime energy delivered
12,600 kWh
7,680 kWh
Cost per lifetime kWh
$0.13
$0.13
Cost per warranty year
$320/yr
$200/yr
Battery lifespan
9.6yr daily · 33.7yr weekend · 67.3yr weekly
8.2yr daily · 28.8yr weekend · 57.7yr weekly

Analyst note

The SOLIX F2600 is cheaper to buy, but the DELTA Pro is cheaper to own. At $0.13/kWh over its lifetime vs $0.13/kWh, the DELTA Pro's higher cycle life and capacity make each dollar go further over the years.

Brand trust

EcoFlow

Ecosystem

Largest in portable power — 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels

Support

US-based phone/email/chat support (1-800-368-8604). Experiences are polarized — many report hassle-free prepaid-label replacements, but others report long waits and refurbished units sent for new claims. Pro tip: buying from Costco or Amazon gives you a stronger return safety net.

Community

Largest community in the space — Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum

App experience

Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)

Unique strength

Fastest-charging technology (X-Stream), deepest product ecosystem, and most active innovation cadence. 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.

All EcoFlow power stations tested →

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.

All Anker power stations tested →

Analyst note

EcoFlow's ecosystem and community are larger and more active, with a support line that's polarized but backed by more channels. Anker's SOLIX line trades on the parent brand's consumer-electronics trust, but that support quality is reportedly trending down as return logistics get more complicated for heavier units.

Growth path

DELTA Pro

EXPANDABLE

Supports 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 F2600

EXPANDABLE

Supports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 2,560Wh.

Accepts up to 1,000W of solar. Enough for a serious multi-panel array.

Generous port selection supports complex multi-device setups.

Expansion batteries are Anker-specific. You're investing in the Anker ecosystem.

DELTA ProSOLIX F2600

Analyst note

Both expand, but the DELTA Pro's higher solar ceiling (1,600W vs 1,000W) gives it the stronger off-grid growth path — more panels can feed a bigger bank as it grows.

06

What Owners Report

Patterns from published owner reports and long-term reviews — every claim cited to its source below.

EcoFlow DELTA Pro

Owners running the DELTA Pro through extended outages report it holding up as primary backup across multiple overnight events spanning months, powering several essentials at onceA3 — the kind of track record that comes from being treated as a home-backup platform rather than a weekend accessoryA1.

The wheels are doing real work at 99 lbs — best on flat, smooth ground, with a cart recommended for anything unevenA2 — and the recurring complaint is fan noise: a noticeable high-pitched whine past roughly 2,000W, though it stays quiet 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.
backuppowerhub.com / us.ecoflow.com — EcoFlow DELTA Pro review, 2025-2026

Sources

backuppowerhub.com · us.ecoflow.co · outdoorgearlab.com · bobvila.com · powerstationadvisor.com · robbsutton.com

Anker SOLIX F2600

The SOLIX F2600 packs 2,560Wh into the same footprint as the smaller F2000, with HyperFlash charging reaching 0-80% in about 78 minutesB1. Owners praise ample inverter power for everyday use, quiet operation, and a user-friendly app, with the main gripe being that the expansion cable design could be more space-efficientB3.

It's expandable via the BP2600 module up to 4,608Wh totalB2, and InfiniPower LFP cells carry a 5-year warranty that owners describe as well-suited to outage performance and ease of useB4.

Packs 2,560Wh into the same footprint as the F2000, with HyperFlash fast charging reaching 0-80% in about 78 minutes.
backuppowerhub.com / ankersolix.com — SOLIX F2600 review, 2026

Sources

backuppowerhub.com · ankersolix.com · homedepot.com · outboundpower.com · samsclub.com · batteryskills.com · thesolarlab.com

Sources & Research Notes

Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.

Recurring owner themes

  • Established home-backup platform with wheeled portability and massive expandability; the consistent knock is fan noise under heavy load. [DELTA Pro · 3 entries]
  • Fast HyperFlash charging, quiet operation, a good app, expandability, and a 5-year warranty are the standout praise for this 2,560Wh unit. [SOLIX F2600 · 3 entries]
  • A1

    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

    Packs 2,560Wh into the same footprint as the F2000, with HyperFlash fast charging reaching 0-80% in about 78 minutes.

    backuppowerhub.com / ankersolix.com — SOLIX F2600 review · 2026 · [positive]

  • B2

    Expandable via the BP2600 battery module, scaling total capacity to 4,608Wh through Anker's proprietary link cable.

    homedepot.com / outboundpower.com — SOLIX F2600 / BP2600 · 2026 · [positive]

  • B3

    Owners praise ample inverter power, quiet operation, and a user-friendly app; some suggest the cable design could be more space-efficient.

    samsclub.com / batteryskills.com — SOLIX F2600 owner reviews · 2026 · [positive]

  • B4

    InfiniPower LFP rated for 3,000 cycles with a 5-year warranty; well-received for power-outage performance and ease of use.

    backuppowerhub.com / thesolarlab.com — SOLIX F2600 review · 2026 · [positive]

Research compiled July 14, 2026.

07

Who Should Buy Which

Buy the DELTA Pro if you…

  • You specifically need the extra 1,040Wh of capacity (3,600 vs 2,560Wh) and will pay the $599 premium for it.
  • You're running compressor-driven appliances that need the Pro's 7,200W surge headroom, not just steady wattage.

This is you — check the DELTA Pro price

Buy the SOLIX F2600 if you…

  • You want to save $599 up front — $999.99 against the Pro's $1,599 — for a unit that covers the same everyday jobs and expands to 4,608Wh if you need moreB2.
  • You're carrying it solo (28.5 lbs lighter) or want the quieter, more polished everyday experience owners describeB3.

This is you — check the SOLIX F2600 price

If neither fits

If your real need is full daily power for van life or similar, neither gets there alone — the Pro needs 153% of its own capacity and the F2600 needs 215%. Look at a larger or stacked system built for continuous daily draw.

08

The Bottom Line

The page has flipped. The DELTA Pro no longer costs less — it's $599 more ($1,599 vs $999.99) — and its longevity edge only ties the F2600 on lifetime cost. What it still offers is more capacity and far more surge, paid for with 28.5 extra pounds and a louder, disclosed 60dB fan.

Take the F2600 for most setups: it's $599 cheaper, lighter, quieter, and expands to 4,608Wh if you outgrow its 2,560Wh. Reach for the DELTA Pro only if you specifically need its extra 1,040Wh or its 7,200W surge for compressor loads — then its capacity and headroom are worth the premium.

09

Frequently Asked Questions

Answers drawn from the spec record and cited owner research.

Is the EcoFlow DELTA Pro or the Anker SOLIX F2600 cheaper?

The F2600, and by a lot now — $999.99 against the DELTA Pro's $1,599, a $599 gap. The Pro used to be the cheaper of the two; after its price rose and the F2600's fell, that's reversed. The Pro still holds 1,040Wh more capacity, but you now pay a premium for it. The F2600's other advantages: 28.5 fewer pounds and owner reports of quieter operation.

Which one handles a fridge or other compressor appliance better?

The DELTA Pro, on paper — its 7,200W surge ceiling is 4,400W higher than the F2600's 2,800W, which matters at the moment a compressor kicks on and spikes well above its rated draw. Owners do report the F2600 handles steady everyday loads fine; the gap is specifically about starting big loads, not running them.

Which is quieter, the DELTA Pro or the SOLIX F2600?

The Pro publishes 60dB under load and owners confirm an audible whine past roughly 2,000W. Anker hasn't published a noise figure for the F2600, but multiple owners independently describe it as quiet in practice.

Can both of these expand later?

Yes, both take brand-specific expansion batteries. The Pro's higher 1,600W solar ceiling against the F2600's 1,000W gives it more room to keep growing an off-grid setup over time.

Check SOLIX F2600 price →

Where to buy

DELTA Pro

EcoFlow DELTA Pro

$1,599.00

Check current price

$1,599.00 list · direct from EcoFlow

SOLIX F2600

Anker SOLIX F2600Pick

$999.99

Check current price

$999.99 list · direct from Anker

Prices may vary by retailer and are subject to change.