Head-to-head test
EcoFlow DELTA 3 1000 Air vs Anker SOLIX C800
The C800 charges $40 more for 192Wh less capacity and a slower relative surge margin, and its one real edge — 1,200W continuous against 500W — has to be weighed against a five-year warranty that's genuinely worth something and an IP rating neither unit actually has.
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
EcoFlow
DELTA 3 1000 Air
3,014Power Score · Appliance Class
$309.00 list · direct from EcoFlow
Anker
SOLIX C800
2,245Power Score · Appliance Class
$599.00 list · direct from Anker
Spec deltas
Both of these are budget-tier, sub-$350 power stations aimed at the same buyer, and on paper the DELTA 3 1000 Air wins more categories: 960Wh against the C800's 768Wh, $309 against $349, 22 lbs against 23.8, and 39dB against 45dB under load.
The C800 answers with a bigger continuous ceiling, 1,200W against 500W, 100W USB-C against 18W, and a 5-year warranty against a 2-year one. It also carries a caveat the DELTA 3 1000 Air doesn't: no IP weather rating, so it needs cover if you're using it outdoorsB2.
The DELTA 3 1000 Air wins the two scenarios where these two actually separate and comes out cheaper to own besides. The C800 earns its premium only where its higher wattage ceiling or its longer warranty actually gets used.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
Paying $40 more for 192Wh less capacity only makes sense if you're buying something other than raw energy storage — namely the C800's higher continuous wattage or its longer warranty.
DELTA 3 1000 Air holds 960Wh for $309; the C800 holds 768Wh for $349DELTA 3 1000 Air costs $0.11 per lifetime kWh against the C800's $0.15
Why it mattersBuyers shopping on capacity and price alone should default to the DELTA 3 1000 Air; the C800 only wins if a specific other spec is doing real work for you.
continuous output
That relative edge doesn't change what either unit can actually start: the C800's 1,200W continuous ceiling still lets it run devices the 1000 Air's 500W simply can't reach, regardless of which one has the better ratio.
DELTA 3 1000 Air's surge rating is 1,000W against 500W continuous, a 2x ratioC800's surge rating is 1,600W against 1,200W continuous, a 1.33x ratio
Why it mattersDon't read the surge-ratio numbers as the C800 being weaker overall — its absolute ceiling is still the bigger number that matters for real appliances.
solar input
For anyone who actually recharges via solar panels rather than a wall outlet, the 1000 Air's 500W ceiling gets there meaningfully faster than the C800's 300W limit, which reviewers flag as middling for the unit's classB5.
C800's max USB-C output is 100W against the DELTA 3 1000 Air's 18WC800's solar input caps at 300W against the DELTA 3 1000 Air's 500W
Why it mattersOff-grid or camping buyers who lean on solar refill should weight the 1000 Air's input speed; buyers who mainly charge devices over USB-C should weight the C800's port instead.
A five-year promise on a unit that isn't rated to get rained on outdoors is still a genuine advantage for home backup, just a narrower one than the number alone suggests for camping or tailgate use.
C800 carries a 5-year warranty against the DELTA 3 1000 Air's 2-year termB6C800 has no IP weather rating and needs to stay covered outdoorsB2
Why it mattersBuyers planning mostly indoor or covered use should credit the C800's warranty fully; buyers planning to leave it exposed outdoors should discount it.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: CPAP and Tailgate are the only two scenarios that separate these units, and the DELTA 3 1000 Air wins both.
CPAP Overnight and Tailgate Party are the only two of six scenarios where these units actually separate, and the DELTA 3 1000 Air wins both. A CPAP overnight needs about 320Wh: the DELTA 3 1000 Air covers it using 39% of its tank against the C800's 49%. A tailgate afternoon needs roughly 670Wh, and the C800 can't finish it at all, landing at 103% of its 768Wh capacity, while the DELTA 3 1000 Air lands at 82% with real room left.
Everything bigger defeats both units outright. Weekend Camping, the 8-Hour Blackout, Remote Workday, and Van Life Daily all push past 100% of capacity on both sides, Van Life Daily by more than five times over — neither unit is sized for a multi-day trip or a full outage, whichever you pick.
Lifetime Value
Selected because: Cheaper sticker, more capacity, and a lower cost-per-kWh all land on the DELTA 3 1000 Air's side of the ledger.
cost / lifetime kWh
The DELTA 3 1000 Air is cheaper to buy and cheaper to run: $0.11 per lifetime kWh against the C800's $0.15, because its bigger 960Wh tank pushes more total energy through the same 3,000-cycle life for a smaller check. There's no offsetting advantage on the C800's side of this particular ledger.
The one place the C800 pulls ahead is cost-per-warranty-year, $70 against the DELTA 3 1000 Air's $155, purely because Anker backs it for five years against EcoFlow's two. If warranty coverage per dollar is the priority, that's a real point for the C800 even though it loses on raw energy economics.
What the Specs Don't Tell You
Selected because: Surge ratio, USB-C, UPS speed, and warranty length are the real tiebreakers once price and capacity are set aside.
The C800's 100W USB-C port can fast-charge a laptop directly; the DELTA 3 1000 Air's 18W port can't. The C800 also holds the higher continuous ceiling, 1,200W against 500W, though its surge-to-continuous ratio is the weaker of the two at 1.33x against the 1000 Air's 2x.
The DELTA 3 1000 Air's 10ms UPS switchover is twice as fast as the C800's 20ms, and it's also 6dB quieter under load. Reviewers describe the C800 as near-silent under lighter loads with only a mild hum at its max outputB7 — the noise gap between these two only shows up when both are working hard.
Growth Path
Selected because: Both units are closed systems — clears up any assumption that either one grows past its shipped capacity.
solar input
Neither unit expands. What ships in the box is the ceiling for both, permanently — there's no B-series battery or add-on pack waiting to rescue either one down the line.
That makes today's capacity decision a five-year-plus bet either way. The DELTA 3 1000 Air's 960Wh is already the larger tank of the two, so if you're sizing for growth within this budget tier, it's the better starting point even without an expansion port.
Strengths & trade-offs
EcoFlow DELTA 3 1000 Air
Strengths
- +Costs $290 less
- +Lighter by 1.8 lb
- +Larger battery capacity
- +Faster solar charging
Trade-offs
- –Weaker inverter (-700W) limits appliance compatibility.
Anker SOLIX C800
Strengths
- +Higher AC output
- +Longer warranty
Trade-offs
- –Substantially more expensive (+$290) than the DELTA 3 1000 Air.
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
Neither unit can fully handle this scenario (needs 2,100Wh). You'd need a higher-capacity station or to cut back on usage.
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
Neither unit can fully handle this scenario (needs 1,645Wh). You'd need a higher-capacity station or to cut back on usage.
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 1000 Air
Both are massively overpowered for CPAP — the DELTA 3 1000 Air finishes at 39% used against the SOLIX C800's 49%. At a 40W load that reserve is comfort rather than necessity, so if a CPAP is the only thing you plan to run, price and portability should count for more than capacity does.
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
Neither unit can fully handle this scenario (needs 910Wh). You'd need a higher-capacity station or to cut back on usage.
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 1000 Air
The SOLIX C800 runs out of juice. It only has 653Wh usable, but this scenario needs 670Wh. The DELTA 3 1000 Air covers it and still has 10h of phone charging left over.
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.
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 1000 Air runs 4h vs 3.2h.
$309 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 0–54.4hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–10.9hHigh-Draw Appliances
These reveal the real limitsscale 0–0.7h¹ 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 DELTA 3 1000 Air
The DELTA 3 1000 Air beats the C800 on price, capacity, weight, noise, solar input, and cost per lifetime kWh, and it wins the two scenarios where these units actually diverge. The C800's case is narrower than it looks: 1,200W continuous against 500W matters if your loads sit in that band, and its 5-year warranty against 2 years is real. If neither of those applies to your use case, there's no reason to pay $40 more for less capacity.
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.
$309.00 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 14, 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 3 1000 Air rates 5.0/5 (99th percentile of 19 Compact-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.
SOLIX C800: 45dB Under Load
45dB is about as loud as a running refrigerator. 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.
DELTA 3 1000 Air: USB-C Maxes at 18W
The DELTA 3 1000 Air's fastest USB-C port outputs 18W. A MacBook Air needs 30W minimum, a MacBook Pro needs 96W, and most USB-C laptops need at least 60W for full-speed charging. At 18W, your laptop will charge slowly. Under load, it might not charge at all. The SOLIX C800 handles this at 100W.
Surge Power: Inverter Quality Indicator
The DELTA 3 1000 Air has a 2× surge-to-continuous ratio vs the SOLIX C800's 1.3×. A higher ratio (≥2×) means the inverter handles motor startup surges better. That's critical for fridges, AC compressors, and power tools that briefly draw 2-3× their rated wattage. The SOLIX C800 may trip when starting these appliances even though its continuous wattage looks sufficient.
UPS Speed: line-interactive (<10ms) vs standby (<20ms)
The DELTA 3 1000 Air switches to battery in 10ms (line-interactive (<10ms)), while the SOLIX C800 takes 20ms (standby (<20ms)). Safe for desktop PCs, routers, and CPAP machines. NAS drives are protected. This matters if you're using it as a home UPS for always-on equipment.
Warranty Value Comparison
The SOLIX C800 gives you 8.3 years of warranty per $1,000 spent, vs the DELTA 3 1000 Air's 6.5 years. That's 1.3× more coverage per dollar. An underrated factor if you're keeping this unit for years.
Full record above — the Test Desk pick is the DELTA 3 1000 Air.
Check DELTA 3 1000 Air 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 1000 Air wins on both sticker price and long-term value. At $0.11/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Delivers each lifetime kWh for $0.15 less — check the DELTA 3 1000 Air 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
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 positions itself as a mid-to-premium brand with stronger support infrastructure, while Anker competes on value. The question is whether the EcoFlow ecosystem and support premium is worth it for your use case.
Growth path
DELTA 3 1000 Air
FIXED CAPACITYFixed at 960Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
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
Neither expands, and that's no knock on either — each is a complete unit at a fixed size. Buy the capacity that covers your needs now (the DELTA 3 1000 Air gives you the larger ceiling); you can't add to either later.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3 1000 Air
Reviewers describe the DELTA 3 1000 Air as a deliberately minimalist unit: a 960Wh LiFePO4 pack behind a 500W inverter (800W with X-Boost), all packed into just 22 lbs with fewer ports and features than its EcoFlow siblingsA1. That minimalism is the whole design brief — it's built as a power-protection device, using its 10ms switchover to keep a computer, monitor, and router alive through an outageA2 rather than trying to be a general-purpose station.
The tradeoff is a hard one: at 500W continuous, it can't run a space heater or a hair dryerA3, and EcoFlow has already shifted its own attention to the standard DELTA 3 as this unit's successorA4.
“A 960Wh LiFePO4 unit with a 500W inverter (800W X-Boost) weighing only 22 lbs — a focused, minimalist design with fewer ports and features.”
Sources
thesolarlab.com · batteryskills.com · backuppowerhub.com · matanich.com
Anker SOLIX C800
Independent hands-on testing describes the C800 as solidly built — surviving a 30-inch drop onto gravel with only minor scuffingB1 — and it holds up under load, powering a 1,000W coffee maker for 42 minutes straightB3 and briefly running a 1,500W space heater past its own 1,200W rating for 25 minutes before throttlingB8. Its 58-minute full recharge from a 600W AC adapter is the standout spec, faster than rivals like the Jackery 700, which reviewers clock at over two hoursB9.
The two real caveats: it carries no IP weather rating, so outdoor use means keeping it coveredB2, and its 300W max solar input is called middling next to similarly sized competitorsB5. Field coverage on this exact model is thinner than most, coming mainly from independent review-site testing rather than long-term owner forums, so treat these as early hands-on impressions rather than a mature track record.
“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
- A focused home-office UPS unit — LFP, 10ms UPS, quiet and light — but low 500W output; now discontinued in favor of the DELTA 3. [DELTA 3 1000 Air · 3 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
“A 960Wh LiFePO4 unit with a 500W inverter (800W X-Boost) weighing only 22 lbs — a focused, minimalist design with fewer ports and features.”
thesolarlab.com / batteryskills.com — DELTA 3 1000 Air review · 2026 · [mixed]
- A2
“Built as a power-protection device with a 10ms UPS switchover to keep a computer, monitor, and router running through outages.”
backuppowerhub.com — DELTA 3 1000 Air review · 2026 · [positive]
- A3
“With only 500W continuous output, it won't run a space heater or hair dryer — it's built for low-to-moderate draw devices.”
backuppowerhub.com / matanich.com — DELTA 3 1000 Air review · 2026 · [mixed]
- A4
“EcoFlow no longer sells the DELTA 3 1000 Air; the closest successor is the standard DELTA 3 (1,024Wh LFP, 1,800W output, ~$549).”
backuppowerhub.com — DELTA 3 line · 2026 · [mixed]
- 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]
- B5
“Only allows a middling amount of solar charge at 300W max solar panels, when compared to its equivalently-sized models.”
portablepowergeek.co.uk — Anker Solix C800 Review · 2024-11 · [mixed]
- 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]
- B7
“Zero fan noise under 500W loads, unlike louder competitors (e.g., Bluetti EB55). Only a mild hum at max load.”
batteryskills.com — Anker SOLIX C800 Portable Power Station Review · 2025-10 · [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]
- B9
“Achieved a full charge in 58 minutes using a 600W AC adapter (matching Anker's claim), while competitors like the Jackery 700 take 2+ hours.”
batteryskills.com — Anker SOLIX C800 Portable Power Station Review · 2025-10 · [positive]
Research compiled July 14, 2026.
Who Should Buy Which
Buy the DELTA 3 1000 Air if you…
- →Your heaviest regular load is a CPAP overnight or a tailgate afternoon — the DELTA 3 1000 Air wins both scenarios outright and costs less doing it.
- →You mostly recharge via solar and want the faster 500W input, or you'd simply rather have more capacity for less money.
Buy the SOLIX C800 if you…
- →You need to run something in the 500-1,200W range regularly — a coffee maker, a space heater briefly, a real kitchen appliance — where the DELTA 3 1000 Air's 500W ceiling can't follow.
- →You want a longer warranty for mostly indoor or covered use, or a USB-C port fast enough to charge a laptop directly.
If neither fits
If your real need is a two-night camping trip (about 2,100Wh) or an 8-hour multi-appliance blackout (about 1,645Wh), both of these fail outright, running past 200% of capacity on either side. Look at a 1,500Wh-plus unit from either brand instead.
The Bottom Line
The DELTA 3 1000 Air beats the C800 on price, capacity, weight, noise, and solar input, and it wins the two scenarios where these units actually diverge.
The C800's advantages are real but narrower than they first appear: a higher continuous ceiling that only matters if your loads sit in the 500-1,200W range, and a longer warranty that comes with an unrated caveat for outdoor use. Default to the DELTA 3 1000 Air unless one of those two specifically applies to you.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Which is the better value between the DELTA 3 1000 Air and the Anker SOLIX C800?
The DELTA 3 1000 Air, on raw numbers: it's $40 cheaper, holds 192Wh more capacity, and costs $0.11 per lifetime kWh against the C800's $0.15. The C800's case rests on its higher 1,200W continuous ceiling and its 5-year warranty, not on price or capacity.
Can the Anker SOLIX C800 be left outside during a storm?
Not uncovered — it carries no IP weather rating, so reviewers recommend keeping it under cover during outdoor use. Neither unit here is weatherproof, but this is a specific, documented caveat on the C800.
Which one charges faster from solar panels?
The DELTA 3 1000 Air, with a 500W solar input ceiling against the C800's 300W, which reviewers call middling for its size class. For USB-C device charging the C800 wins instead, with a 100W port against the 1000 Air's 18W.
Does either of these support battery expansion?
No — both are closed systems. Whatever capacity you buy today, 960Wh for the DELTA 3 1000 Air or 768Wh for the C800, is permanent.
Which one should I actually buy?
If your loads stay under 500W, take the DELTA 3 1000 Air — it's cheaper, bigger, quieter, and faster on solar besides. If you regularly need more than 500W continuous, or you specifically want five years of warranty for mostly indoor use, the C800's higher ceiling and coverage are worth the $40 and the smaller tank.
Where to buy
EcoFlow DELTA 3 1000 AirPick
$309.00
$309.00 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.