Head-to-head test
EcoFlow DELTA 3 Classic vs Anker SOLIX C800
The SOLIX C800 used to be the cheaper of these two; now, at $599 against the DELTA 3 Classic's $469, it costs $130 more for less capacity, less output, more noise, and no expansion path at all.
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
EcoFlow
DELTA 3 Classic
3,341Power Score · Appliance Class
$469.00 list · direct from EcoFlow
Anker
SOLIX C800
2,245Power Score · Appliance Class
$599.00 list · direct from Anker
Spec deltas
Prices have moved since this comparison first ran, and the order has reversed: the Anker SOLIX C800 used to be the cheaper of these two units, and it no longer is. As of this writing the DELTA 3 Classic is $469 and the SOLIX C800 is $599 — a $130 gap in EcoFlow's favor.
That would be a wash if the C800 clawed back ground somewhere else. It doesn't. The DELTA 3 Classic still holds 256Wh more capacity (1,024Wh against 768Wh), still pushes 600W more continuous output (1,800W against 1,200W), still accepts EcoFlow expansion batteries the sealed C800 can't match, and runs 15dB quieter under load (30dB against 45dB). The one number that used to run the Anker's way, warranty value, has flipped too: at $599, the C800's five-year coverage now costs $120 a year against the DELTA 3 Classic's $94.
This isn't a trade-off page anymore. The DELTA 3 Classic wins on price and the spec sheet at the same time. The only real case left for the C800 is 2.9 fewer pounds to carry (23.8 lbs against 26.7) and a brand history without EcoFlow's one recall — reasons to buy it, but thin ones next to $130.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
cost / lifetime kWh
The per-kWh math confirms it isn't close either: $0.26 per lifetime kWh against the DELTA 3 Classic's $0.15, a $0.11 gap (0.26 minus 0.15). The C800 is now the expensive option by both sticker price and the cost of the energy it actually holds.
DELTA 3 Classic: $469; SOLIX C800: $599 — a $130 gap ($599 minus $469)DELTA 3 Classic costs $0.15 per lifetime kWh; SOLIX C800 costs $0.26 per lifetime kWhThe SOLIX C800 was the cheaper of the two units when this comparison first ran
Why it mattersAnyone who remembers the C800 as the budget pick should re-check before buying. That reason no longer exists.
Price
Warranty value used to be the strongest argument for choosing the C800. At current prices it's an argument against it.
Both units carry a 5-year warrantySOLIX C800 costs $120 per warranty-year at $599; DELTA 3 Classic costs $94 per warranty-year at $469 — a $26 gapWarranty value used to be the strongest argument for the C800 at its old price
Why it mattersBuyers weighing 'same warranty, which is the better deal' should take the DELTA 3 Classic. The math that used to favor Anker no longer does.
continuous output
There's no spec on this page where paying more for the C800 buys something back. It's louder, sealed, and carries less surge headroom, all while costing more.
SOLIX C800 has no expansion path (sealed at 768Wh); DELTA 3 Classic accepts EcoFlow expansion batteriesSOLIX C800 runs 45dB under load; DELTA 3 Classic runs 30dB — a 15dB gapDELTA 3 Classic surges to 3,600W off its 1,800W inverter (2.0x = 3600/1800); SOLIX C800 surges to 1,600W off 1,200W (1.33x = 1600/1200)
Why it mattersIf you were holding out for a reason to pick the Anker on the numbers, this is confirmation there isn't one.
The C800 loses the only two decisive scenarios, and it now costs $130 more to lose them.
CPAP Overnight needs 320Wh: DELTA 3 Classic uses 37% of its tank, SOLIX C800 uses 49%Tailgate Party needs 670Wh: DELTA 3 Classic clears it at 77% of tank, SOLIX C800 falls short at 103%SOLIX C800 now costs $599 against the DELTA 3 Classic's $469
Why it mattersFor overnight CPAP use or a tailgate afternoon, there's no version of this decision where the pricier, smaller-tanked C800 is the pick.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: The price reversal is the headline; $469 vs $599 and $0.15 vs $0.26 per lifetime kWh settle more of this matchup than anything else.
cost / lifetime kWh
$0.15 per lifetime kilowatt-hour on the DELTA 3 Classic against $0.26 on the SOLIX C800 — an $0.11 gap, and it wasn't this lopsided when this comparison first ran, back when the C800 was the cheaper of the two units. Today it's $599 against the DELTA 3 Classic's $469, a reversal that makes the per-kWh gap look even worse for the Anker. Cost per warranty year tells the same story: $94 on the EcoFlow, $120 on the Anker, a $26 difference for identical five-year coverage. There's no angle left where the C800 is the value pick.
What the Specs Don't Tell You
Selected because: Five cards fire, and the warranty card flipped along with the price order — all five now point the same direction.
Five cards fire on this pair: expansion, noise, surge ratio, UPS switchover, and warranty value. Expansion and surge ratio always favored EcoFlow — its expansion batteries against the C800's sealed 768Wh, and a 2.0x surge reserve against 1.33x. Noise (30dB against 45dB) and UPS switchover (sub-10ms against sub-20ms) always did too. The card that used to split the other way, warranty value, flipped along with the price order: $120 a year for identical coverage on the C800 against the EcoFlow's $94. A pair with five firing gotchas and a single winner across all of them is rare. This is that pair.
Growth Path
Selected because: Expansion vs sealed is still the structural difference, and it now comes with a lower price attached instead of a higher one.
solar input
The DELTA 3 Classic accepts EcoFlow expansion batteries. The SOLIX C800 is a sealed box: 768Wh on day one, 768Wh forever. That was already the structural edge before the prices moved, and now it comes with a lower sticker price attached instead of a higher one. The honest caveat still applies: buying small specifically to expand later usually costs more than buying the bigger unit outright, so treat the expansion path as insurance against uncertain future needs, not a plan you're committing to on day one.
Your Life, Your Pick
Selected because: CPAP Overnight and Tailgate Party are the two baskets that produce a real winner, and the DELTA 3 Classic takes both while costing less.
Every basket except Tailgate Party overwhelms both tanks. Weekend Camping needs 241% of the DELTA 3 Classic's capacity and 322% of the C800's; an 8-hour blackout needs 189% and 252%. CPAP Overnight and Tailgate Party are the two that produce a real winner, and the DELTA 3 Classic takes both: 37% of its tank for an overnight CPAP against the C800's 49%, and 77% for a tailgate afternoon against the C800's 103% — the Anker runs dry before the party does. The DELTA 3 Classic wins the scenarios that resolve, and it costs less doing it.
Brand Trust
Selected because: Cross-brand pair; brand risk tolerance is the one differentiator left standing after price and specs both went EcoFlow's way.
EcoFlow runs the larger ecosystem here: a dozen-plus models, the biggest community in the category, and the fastest public charging tech. It's also the brand with a real recall on record, the October 2025 DELTA Max 2000, and a history of testing subscription paywalls before backing off under community pressure. Anker's SOLIX lineup is smaller and its support is reportedly trending down from a historically excellent standard, but it hasn't had a comparable safety event. Neither brand issue is large enough on its own to override a $130 price gap and a clean spec sweep, but if a spotless recall record matters to you specifically, that's Anker's one genuine card left to play.
Strengths & trade-offs
EcoFlow DELTA 3 Classic
Strengths
- +Costs $130 less
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –No major technical downsides compared to rival.
Anker SOLIX C800
Strengths
- +Lighter by 2.9 lb
Trade-offs
- –Weaker inverter (-600W) limits appliance compatibility.
- –Sealed capacity — the DELTA 3 Classic can add batteries to grow past 768Wh; this one can't.
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
A 2,100Wh weekend needs more than double either tank: 241% of the DELTA 3 Classic's capacity, 322% of the C800's. Neither is built for this basket alone. Pair the DELTA 3 Classic with an expansion battery, or scale the trip down.
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
Neither unit
At 1,645Wh, both fall short: 189% of tank for the DELTA 3 Classic, 252% for the C800. Trim to essentials for either, or treat the EcoFlow's expansion path as the real fix for full-outage coverage.
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
DELTA 3 Classic
Both pass easily: the DELTA 3 Classic uses 37% of its tank, the C800 49%. With the SOLIX C800 now $130 more expensive for the smaller margin, there's no reason to pay more here.
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
Neither unit
A 910Wh workday needs 105% of the DELTA 3 Classic's tank and 139% of the C800's, close for the EcoFlow, further out for the Anker. Either needs a mid-day top-up; the DELTA 3 Classic needs less of one.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
DELTA 3 Classic
The one basket either unit clears outright: the DELTA 3 Classic covers a 670Wh afternoon at 77% of its tank. The C800 falls short at 103%, running dry before the party does, and now costs more for the privilege.
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
A 4,685Wh day dwarfs both units: 538% of tank for the DELTA 3 Classic, 718% for the C800. Van life at this scale needs a dedicated system, ideally the DELTA 3 Classic built out with expansion batteries from the start.
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: DELTA 3 Classic runs 4.2h vs 3.2h.
$469 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 0–58hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–11.6hHigh-Draw Appliances
These reveal the real limitsscale 0–0.9h¹ 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 26, 2026
Verdict: the DELTA 3 Classic
The DELTA 3 Classic is $469; the SOLIX C800 is $599 — a $130 gap ($599 minus $469) running in EcoFlow's favor, the reverse of how this comparison first read. That reversal sits on top of a spec sheet the DELTA 3 Classic already won: 1,024Wh against 768Wh, 1,800W against 1,200W, and the only expansion path between the two. The C800's warranty used to be the cheaper insurance policy. At $599 it now costs $120 per warranty-year against the EcoFlow's $94 — a $26 gap — so that argument has flipped too. What's left for the C800 is 2.9 fewer pounds to carry (23.8 lbs against 26.7) and a cleaner safety record than EcoFlow's one recall. Real, but not enough to offset a bigger, quieter, cheaper unit with room to grow. Buy the DELTA 3 Classic unless brand caution or the last few pounds matter more to you than the money.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 26, 2026. The links below open EcoFlow's and Anker's current prices.
$469.00 list · direct from EcoFlow
or check the SOLIX C800 price$599.00 list
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated July 26, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): RV Living, Home Backup, Food Truck.
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 3 Classic rates 4.9/5 (91st percentile of 24 Everyday-class units), and SOLIX C800 rates 4.1/5 (50th percentile of 19 Compact-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.
The cheaper unit is also the quieter one now
The C800's 45dB spec sits above the 'noisy' threshold, while the DELTA 3 Classic runs at 30dB, a 15dB gap. Both stay quiet under light loads; the gap opens up as either approaches its ceiling, and the DELTA 3 Classic is now the less expensive way to avoid it.
One of these has a ceiling, and it's welded on
The C800 is a closed system: the 768Wh you buy is the 768Wh you'll ever have. The DELTA 3 Classic accepts EcoFlow expansion batteries, so its 1,024Wh is a starting point. That was already true before the price order reversed. Now the more flexible unit is also the cheaper one.
The bigger inverter also has the deeper reserve
The DELTA 3 Classic surges to 3,600W off an 1,800W rating, 2.0x. The C800 surges to 1,600W off 1,200W, 1.33x. For a hard-starting compressor or power tool, the DELTA 3 Classic carries more margin, on top of already having the bigger continuous number and the lower price.
Sub-10ms vs sub-20ms, both fine, one's faster
The DELTA 3 Classic's line-interactive switchover (under 10ms) is quick enough to protect a desktop mid-save or a NAS array. The C800's standby design (under 20ms) is a step behind but still fine for most electronics. Only matters if sensitive gear rides through an outage on this unit.
Same five years, and now the cheaper price tag too
Both units carry a 5-year warranty, but the C800's now runs $120 a year at its current price against the DELTA 3 Classic's $94. This card used to favor the Anker before the price order flipped.
Full record above — the Test Desk pick is the DELTA 3 Classic.
Check DELTA 3 Classic price →or check the SOLIX C800 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 3 Classic wins on both sticker price and long-term value. At $0.15/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Delivers each lifetime kWh for $0.11 less — check the DELTA 3 Classic price →
Brand trust
EcoFlow
Ecosystem
Largest in portable power — 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels
Support
US-based phone/email/chat support (1-800-368-8604). Experiences are polarized — many report hassle-free prepaid-label replacements, but others report long waits and refurbished units sent for new claims. Pro tip: buying from Costco or Amazon gives you a stronger return safety net.
Community
Largest community in the space — Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
Fastest-charging technology (X-Stream), deepest product ecosystem, and most active innovation cadence. Supports up to 180kWh modular expansion with DELTA Pro Ultra X.
Worth knowing
EcoFlow runs the deepest ecosystem and the fastest public charging tech in the category, but it's also the brand with a real recall on record (the October 2025 DELTA Max 2000) and a history of testing subscription paywalls before backing off under pressure.
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
Anker's support was long the industry standard for no-hassle replacements. SOLIX-specific service is reportedly trending down from that peak, but the brand hasn't had a comparable safety event to EcoFlow's recent recall.
Analyst note
EcoFlow moves faster and builds a bigger ecosystem, with a recall on the record to weigh against that pace. Anker moves more conservatively with a smaller catalog and a service reputation in gentle decline, but no comparable safety incident, and at current prices, no cost advantage either. Buy EcoFlow for the room to grow and the lower price both. Buy Anker only if the cleaner safety record is worth $130 to you.
Growth path
DELTA 3 Classic
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,024Wh.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
SOLIX C800
FIXED CAPACITYFixed at 768Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 300W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
The SOLIX C800 is sealed at 768Wh, which is fine if that covers you. The DELTA 3 Classic starts at 1,024Wh and can grow beyond it with EcoFlow expansion batteries — real headroom the SOLIX C800 doesn't have if your needs climb toward partial-home backup.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3 Classic
The DELTA 3 Classic only launched in March 2026, so this is early-adopter testing, not multi-month field data. Reviewers clocked a full wall recharge in just under 55 minutesA1 and measured idle draw around 17W per hourA2, solid early numbers. The bigger surprise was fan noise: testers expected loud cooling fans at this price point and didn't get themA3. EcoFlow also moved the AC outlets and USB ports back to the front of the unit, with charging inputs on the back, a layout reviewers preferred over the previous DELTA generationA4. The Storm Guard auto-charge feature draws specific praise as genuinely useful rather than a marketing checkboxA12. The clearest catch: EcoFlow markets fast charging hard, but solar input tops out at 500W, and one reviewer's screen showed exactly that ceiling even under strong sunA5A9. A retailer review page also shows some buyer confusion with the older DELTA 2; treat any comparison to that model with caution.
“In our tests, the DELTA 3 Classic charged from empty to full plugged into a standard wall outlet in just shy of 55 minutes.”
Sources
thesolarlab.com · vantour.net · smartenergyedge.com · walmart.com
Anker SOLIX C800
The SOLIX C800's warranty gets called out by name as three years longer than its direct rivalsB6, and it backs that up with a 4.7-star rating across 692 Amazon reviewsB10. It survived a 30-inch tailgate drop onto gravel with only minor scuffingB1, and reviewers repeatedly describe the build as rugged and impact-resistantB14. On output, it ran a 1,000W coffee maker for 42 straight minutesB3 and briefly carried a 1,500W space heater above its own 1,200W rating for 25 minutes before throttlingB8. The consistent catches: no IP weather rating, so it needs cover outdoorsB2, and at 23.15 lb it's flagged as too heavy to carry far on footB12, notable since it's still the lighter of these two units on paper. This coverage comes from independent review testing rather than crowd-sourced owner forums, so weigh it as careful tester experience rather than owner consensus.
“We dropped it from a tailgate (30 inches) onto gravel—only minor scuffing, no damage.”
Sources
backuppowerhub.com · portablepowergeek.co.uk · batteryskills.com · batteryessence.com · toolsandtoys.net · bikmantech.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
- Multiple independent reviewers note the unit is quieter than expected for its price point, with low idle drain. [DELTA 3 Classic · 2 entries]
- The 500W solar input cap is flagged as a limiting factor by more than one review outlet, seen as low for a 2026-era release. [DELTA 3 Classic · 2 entries]
- Reviewers praise the app and Storm Guard/smart features as standout software elements. [DELTA 3 Classic · 2 entries]
- Build quality/chassis is repeatedly called solid and drop-resistant, but reviewers flag the lack of an IP weather rating as a real-world caveat for outdoor use. [SOLIX C800 · 3 entries]
- The 58-minute AC fast-recharge is the single most-mentioned standout feature, praised as faster than rivals like the Jackery 700. [SOLIX C800 · 2 entries]
- Reviewers note the unit can briefly exceed its 1200W rating for heavy appliances, but caution it can't sustain full-size continuous loads like a full-size fridge. [SOLIX C800 · 2 entries]
- Long 5-year warranty and strong retailer star ratings are cited as reassurance/value signals. [SOLIX C800 · 2 entries]
- Weight (~23-24 lbs) is repeatedly flagged as a downside relative to lighter rivals despite the compact footprint. [SOLIX C800 · 2 entries]
- A1
“In our tests, the DELTA 3 Classic charged from empty to full plugged into a standard wall outlet in just shy of 55 minutes.”
thesolarlab.com — EcoFlow DELTA 3 Classic Review: Cheap, Quiet & Useful? · unknown (post-launch 2026) · [positive]
- A2
“We measured the idle draw to be roughly 17W per hour.”
thesolarlab.com — EcoFlow DELTA 3 Classic Review: Cheap, Quiet & Useful? · unknown (post-launch 2026) · [positive]
- A3
“we expected the cooling fans to break that trend given the price point for this unit”
thesolarlab.com — EcoFlow DELTA 3 Classic Review: Cheap, Quiet & Useful? · unknown (post-launch 2026) · [positive]
- A4
“EcoFlow moved back to a more sensible front-facing layout: AC outlets and USB ports on the front, charging inputs on the back”
thesolarlab.com — EcoFlow DELTA 3 Classic Review: Cheap, Quiet & Useful? · unknown (post-launch 2026) · [positive]
- A5
“the screen only showed 500 W input”
vantour.net — EcoFlow Delta 3 Classic: Our review, test and promo code · 3 weeks ago (~June 2026) · [negative]
- A9
“EcoFlow pushes the fast charging hard, but the DELTA 3 Classic is capped at 500W solar input”
smartenergyedge.com — EcoFlow DELTA 3 Classic Review: Better Than the DELTA 2? · 1 week ago (~July 2026) · [negative]
- A12
“The Storm Guard auto-charge feature is smart and genuinely useful.”
smartenergyedge.com — EcoFlow DELTA 3 Classic Review: Better Than the DELTA 2? · 1 week ago (~July 2026) · [positive]
- B1
“We dropped it from a tailgate (30 inches) onto gravel—only minor scuffing, no damage.”
backuppowerhub.com — Anker SOLIX C800 Review: Best Budget Power Station? · 2025-12 · [positive]
- B2
“However, the C800 lacks IP weather rating. Keep it covered when camping.”
backuppowerhub.com — Anker SOLIX C800 Review: Best Budget Power Station? · 2025-12 · [negative]
- B3
“A 1,000W coffee maker ran 42 minutes straight.”
backuppowerhub.com — Anker SOLIX C800 Review: Best Budget Power Station? · 2025-12 · [positive]
- B6
“It's backed by a warranty of 5 years – which, by the way, is fully 3 years more than its direct rivals.”
portablepowergeek.co.uk — Anker Solix C800 Review · 2024-11 · [positive]
- B8
“Powered a 1500W space heater (surpassing its 1200W rating) for 25 minutes before throttling—unexpectedly robust for its size.”
batteryskills.com — Anker SOLIX C800 Portable Power Station Review · 2025-10 · [positive]
- B10
“Holds a 4.7-star rating from 692 Amazon reviews and ranks #81 in Outdoor Generators.”
batteryessence.com — Anker SOLIX C800 Portable Power Station 768Wh Review (retailer review summary) · 2026-03 · [positive]
- B12
“At 23.15 lbs (10.5 kg), this is too heavy for carrying far on foot. For hiking, a smaller, lighter power bank under 5 lbs is a better fit.”
batteryessence.com — Anker SOLIX C800 Portable Power Station 768Wh Review · 2026-03 · [negative]
- B14
“Both models feature a rugged, durable chassis made from high-quality, impact-resistant materials, ready to withstand the rigors of outdoor use.”
bikmantech.com — Anker SOLIX C800 vs C800 Plus - Ultimate Camping Power Comparison · 2025-06 · [positive]
Research compiled July 26, 2026.
Who Should Buy Which
Buy the DELTA 3 Classic if you…
- →Almost everyone comparing these two: the DELTA 3 Classic is now the cheaper unit, holds 256Wh more, and is the only one that can expand later.
- →Anyone running heavier loads regularly. 1,800W of continuous output and a 2.0x surge ratio give real headroom the C800's smaller inverter doesn't have.
- →CPAP overnight and tailgate-length use. The two scenarios in our model that produce a real winner, and the DELTA 3 Classic takes both while using less of its own tank.
Buy the SOLIX C800 if you…
- →Buyers who specifically want Anker's cleaner safety record. No recall on file, against EcoFlow's one, and worth paying $130 more and accepting less capacity for it.
- →Anyone for whom the last 2.9 lbs of weight is the deciding factor, though the C800's own reviewers still call it too heavy to carry far on footB12.
If neither fits
If your basket looks like our weekend-camping model (needs 2,100Wh) or a full 8-hour blackout (needs 1,645Wh), skip both outright. The DELTA 3 Classic needs 241% and 189% of its own tank to cover those two loads respectively, and the C800 needs even more at 322% and 252%. Start the search in the 2kWh-plus class, or plan the DELTA 3 Classic specifically with an expansion battery already in the cart.
The Bottom Line
The SOLIX C800 used to be the cheaper, smaller-tank option: less money for less capacity. At $599 against the DELTA 3 Classic's $469, that trade is gone. The C800 now costs $130 more for the same smaller tank, the same louder operation, and the same sealed ceiling. Every gotcha that fires on this pair, from surge ratio to warranty value, now points at the EcoFlow.
Buy the DELTA 3 Classic. The only honest reasons to still consider the C800 are 2.9 fewer pounds and a recall-free brand history, real but not worth $130 and a smaller tank. This was a trade-off page when the prices ran the other way. It isn't one anymore.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 3 Classic cheaper than the Anker SOLIX C800?
Yes, and it wasn't always this way. As of this writing the DELTA 3 Classic is $469 and the SOLIX C800 is $599, a $130 gap in EcoFlow's favor. It also holds more capacity and pushes more output, so there's no longer a price argument for the C800.
Which one can expand its capacity later?
Only the DELTA 3 Classic. It accepts EcoFlow expansion batteries, so 1,024Wh is a starting point rather than a ceiling. The SOLIX C800 is a closed system: 768Wh on day one is 768Wh for the life of the unit.
Which is quieter under load?
The DELTA 3 Classic, at 30dB against the C800's 45dB, a 15dB gap. Both stay quiet at light loads; the difference shows up as either unit approaches its ceiling.
Is the Anker SOLIX C800 still worth buying?
Only in narrow cases. It's $599 against the DELTA 3 Classic's $469 while holding less capacity, pushing less output, running louder, and offering no expansion path. The honest reasons left to pick it are Anker's cleaner recall history and 2.9 fewer pounds to carry, though the C800's own reviewers still call it too heavy for hiking — real, but thin next to $130.
Can either handle a full weekend of camping?
No. A typical weekend-camping basket needs 2,100Wh. The DELTA 3 Classic needs 241% of its own tank to cover that load, and the C800 needs 322%. Both fall well short on a single charge; the DELTA 3 Classic's expansion path is the more realistic route to full weekend coverage without buying an entirely separate, bigger unit.
Where to buy
EcoFlow DELTA 3 ClassicPick
$469.00
$469.00 list · direct from EcoFlow
Anker SOLIX C800
$599.00
$599.00 list · direct from Anker
Prices may vary by retailer and are subject to change.