Head-to-head test
EcoFlow DELTA Pro Ultra X vs Anker SOLIX E10 + 2×B6000
The same 12,288Wh of battery on both sides. The EcoFlow spends the extra money on a much bigger inverter and outlets on the box. The Anker stack is wired into the panel, costs less and is rated for more cycles.
Full profiles: EcoFlow DELTA Pro Ultra X →
Looking for a different matchup? EcoFlow DELTA Pro Ultra X vs Anker SOLIX E10 · EcoFlow DELTA Pro Ultra vs Anker SOLIX E10
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Both of these hold 12,288Wh. Same figure, to the watt-hour. Whatever separates them happens after the battery.
The DELTA Pro Ultra X has the bigger inverter, the part that turns stored DC into the AC your house runs on. It's rated 12,000W continuous against the SOLIX E10 stack's 7,680W. The Anker answers with a price $1,700 lower and a rating of 4,000 cycles against 3,500. It's also wired in at the electrical panel with no sockets of its own, where the EcoFlow carries AC and USB outlets on the box.
Up my canyon in Boulder Creek, the load I'd size around is the deep-well pump. When it kicks on while the fridge compressor is already running, the continuous rating and the surge ceiling decide whether the lights stay steady. Starlink and a desktop barely register at this size. The motors are what I'd plan for.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
The surge figures aren't the same kind of number. EcoFlow publishes an instant peak and Anker a figure held for 90 minutes, so part of that gap is what each maker chose to print. Surge is the short burst a motor pulls as it starts.
DELTA Pro Ultra X: 12,000W continuous, 45,000W instant surgeSOLIX E10 + 2×B6000: 7,680W continuous, 10,000W surge rated over 90 minutesEcoFlow says 12kW covers every circuit including a 5-ton ACA1
Why it mattersList what can run at once on a bad day. Under 7,680W, the Anker carries the house. Over it, pay for the EcoFlow. Check your heaviest motor's startup draw against 10,000W before assuming the Anker trips.
rated cycles
Home batteries are the one class where daily cycling is normal. Behind a roof array or on time-of-use rates, the battery empties every evening. At that pace the ratings run 11 years against 9.6.
Both: 12,288Wh of storageDELTA Pro Ultra X: 3,500 rated cycles, about 43,008 kWh over its rated lifeSOLIX E10 + 2×B6000: 4,000 rated cycles, about 49,152 kWh
Why it mattersIf the system will cycle daily, the Anker's rating turns into real money. If it waits for storms, both outlast the house's next roof.
That flexibility is narrow. At 298.7 lb across its boxes, the EcoFlow isn't something you move on a whim. It matters to a renter, or to someone who might move the system to a shop later.
SOLIX E10 + 2×B6000: hardwired at 120/240V, no USB portsDELTA Pro Ultra X: two AC outlets, two 240V outlets, two 100W USB-CVan Life Daily: the DELTA Pro Ultra X covers 4,685Wh with 5,760Wh to spare
Why it mattersIf it's going on the garage wall for good, the sockets are a small extra. If you might take it with you, only the EcoFlow can leave.
The specific dimensions that decide these two units — everything else is a tie.
What the Specs Don't Tell You
Selected because: Five cards fire, and surge and switchover carry the real difference between the two inverters.
rated cycles
Five cards fire. Surge and switchover favour the EcoFlow. Weight and warranty favour nobody, at five years each and a system you lift once. The noise card is a blank, because EcoFlow publishes 30dB and Anker publishes nothing.
Reviews of the Anker platform fill in some of that blank. One outlet describes a passively cooled, high-voltage design with no fans at allB9. The same outlet measured idle draw around 40 wattsB10, which adds up to close to a kilowatt-hour a day of doing nothing. Both describe the E10 with fewer batteries. On switchover, the EcoFlow lists no worse than 10ms and the Anker no worse than 20ms. With a desktop on the line, I'd want the tighter rating.
Lifetime Value
Selected because: Whole-home batteries often cycle daily, so 4,000 cycles against 3,500 gets spent here.
cost / lifetime kWh
$0.13 a lifetime kilowatt-hour for the Anker against $0.19 for the EcoFlow. The Anker wins this section without argument.
The warranty terms are the same length, five years each. One reviewer flagged Anker's capacity guarantee of 60% at the end of the term as thin next to Tesla's longer, higher promiseB6. Our record doesn't carry an end-of-term capacity figure for the EcoFlow, so that comparison stops at Anker.
Brand Trust
Selected because: Both brands' support has been uneven, and the Anker platform's reviewers went hard at its app.
Our notes carry the same warning for both makers: support has been uneven. EcoFlow's experiences range from easy prepaid-label replacements to long waits, and it offers no parts or service once the warranty ends. Anker's support was long the best in the business, and recent reports describe generic AI-driven replies and awkward returns for heavy units.
The app is where the Anker platform's reviewers pushed hardest. Three outlets found it basic or confusing for a system at this priceB1B2B3, and one install thread documented a setup firmware update that can fail and need the unit unplugged to recoverB11. All of that describes the E10 with fewer batteries. I'd want the app sorted before trusting it with the well pump.
Your Life, Your Pick
Selected because: Every home load on this page is a small fraction of 12,288Wh, so the rows tie and the specs decide.
Every load on this page that happens at home is small next to 12,288Wh. The 8-hour blackout uses 16% of either battery. The CPAP night uses 3%. The two land on identical numbers in every row, because the batteries are identical.
The camping and tailgate rows score as neither, because neither system goes camping. The van row goes to the EcoFlow by default, since the Anker can't leave the panel. Nobody should buy either one for a van.
Strengths & trade-offs
EcoFlow DELTA Pro Ultra X
Strengths
- +Lighter by 21.9 lb
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Very heavy unit that may be difficult for one person to lift.
Anker SOLIX E10 + 2×B6000
Strengths
- +Costs $1,700 less
Trade-offs
- –Significantly heavier (+21.9 lbs), making it harder to move.
- –Weaker inverter (-4,320W) limits appliance compatibility.
- –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
Neither unit
Scoring these two at a campsite is a category error: the DELTA Pro Ultra X at 298.7 lbs is not a take-along — it rolls off a truck bed if it travels at all, and the SOLIX E10 + 2×B6000 is installed at the electrical panel — it backs up the building and doesn't leave it. The 2,100Wh here is trivial for either — it's the going that doesn't happen. If you need power away from the building, you're shopping the wrong class.
Battery budget usedlower = more headroom
LOAD 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
1,645Wh is 16% of either battery, so both finish with most of the night's charge left. Both list a UPS mode, the EcoFlow rated no worse than 10ms and the Anker no worse than 20ms. Those are ratings, and both should keep a fridge and a router running.
Battery budget usedlower = more headroom
LOAD Fridge 150W×8h · Router + Modem 20W×8h · LED Lights (4 bulbs) 40W×6h · Phone Charger 15W×3h
SCN-03 · 8 hours · needs 320Wh
CPAP Overnight
Sleep therapy without interruption — the #1 medical use case
Either unit
A CPAP is about 40W for eight hours, so both of these cover the night several times over — capacity isn't the question here. What would separate them is fan noise, but SOLIX E10 + 2×B6000 doesn't publish a figure, so there's nothing to hold it to. Buy on price, weight, and whether you can live with a fan you haven't heard.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
Either unit
Both power your workstation all day without strain. The DELTA Pro Ultra X lists 100W of USB-C for direct laptop charging; the SOLIX E10 + 2×B6000 carries no USB-C at all, so a laptop there goes through the inverter — which is what a hardwired stack is: the power comes out of your wall sockets, not out of the box.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
Neither unit
Scoring these two at a tailgate is a category error: the DELTA Pro Ultra X at 298.7 lbs is not a take-along — it rolls off a truck bed if it travels at all, and the SOLIX E10 + 2×B6000 is installed at the electrical panel — it backs up the building and doesn't leave it. The 670Wh here is trivial for either — it's the going that doesn't happen. If you need power away from the building, you're shopping the wrong class.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
DELTA Pro Ultra X
The EcoFlow takes this row because the Anker is bolted to a house. Nobody should build a van around either. A system this heavy belongs on a slab.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
Dead heat — both run this 205W load for roughly 51h. Pick on price, weight, or ports.
Planning for more than this? Describe your whole setup and get it sized →
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 0–696.3hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–139.3hHigh-Draw Appliances
These reveal the real limitsscale 0–10.4h¹ 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
November 1, 2026
Verdict: the DELTA Pro Ultra X, on Power Score margin
Take the DELTA Pro Ultra X if your house has big motors. Both hold 12,288Wh. The EcoFlow runs 12,000W continuously against 7,680W, publishes a 45,000W instant surge where Anker rates 10,000W over a longer window, and lists a switchover no worse than 10ms against 20ms. That's room for a central air compressor and a well pump on the same afternoon, and it costs $1,700 more. The Anker is the better value per unit of energy, $0.13 a lifetime kilowatt-hour against $0.19, on 4,000 rated cycles against 3,500. If your heaviest moment stays under 7,680W, the Anker covers the same outage for less.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of November 1, 2026. The links below open EcoFlow's and Anker's current prices.
$7,999.00 · direct from EcoFlow
Last checked 28 days ago. Prices move — check before you buy.
or check the SOLIX E10 + 2×B6000 price$6,299.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated November 1, 2026
Black Friday · 26 days out
Price to beat:DELTA Pro Ultra X $7,699
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews — see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, DELTA Pro Ultra X rates 4.3/5 (58th percentile of 37 Whole-Home / Off-Grid-class units), and SOLIX E10 + 2×B6000 rates 3.8/5 (31st percentile of 37 Whole-Home / Off-Grid-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.
Weight Reality Check
Neither unit is grab-and-go. The DELTA Pro Ultra X (298.7 lbs) is spread across its boxes — no single lift, but nothing you reposition on a whim. The SOLIX E10 + 2×B6000 (320.6 lbs) is a wall-installed system — its weight matters to the installer on day one, then never again.
Surge: Two Different Measurements
EcoFlow publishes 45,000W as an instant peak. Anker rates 10,000W over 90 minutes. Those are different kinds of figure, so the gap between them is partly what each maker chose to print. Check your heaviest motor's startup draw against 10,000W. If it's under, the Anker should start it.
UPS Switchover: ≤10ms vs ≤20ms
Both list a UPS mode, at different rated speeds. The DELTA Pro Ultra X is rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. The SOLIX E10 + 2×B6000 is rated ≤20ms — fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. If a computer with unsaved work is the thing being protected, the stated class is worth the attention; nothing here is a lab result.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. Worth saying because the per-dollar framing can suggest otherwise: the SOLIX E10 + 2×B6000 works out at 0.8 years of cover per $1,000 spent against the DELTA Pro Ultra X's 0.6, but that spread is the price gap, not the terms.
SOLIX E10 + 2×B6000: Noise Level Not Disclosed
The DELTA Pro Ultra X publishes its noise level (30dB); the SOLIX E10 + 2×B6000 doesn't publish one. That isn't evidence the SOLIX E10 + 2×B6000 is louder — it means there's no figure to hold it to, and no way to compare the two on this without hearing them. If you're buying for a bedroom, a CPAP, or an apartment, treat the DELTA Pro Ultra X's 30dB as the only published number on the table — a spec-sheet figure, not a measurement — and look for hands-on reports of the SOLIX E10 + 2×B6000 before deciding.
Full record above — the Test Desk pick is the DELTA Pro Ultra X.
Check DELTA Pro Ultra X price →or check the SOLIX E10 + 2×B6000 priceOwnership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
The SOLIX E10 + 2×B6000 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. At the top of the range sit two whole-home paths: the TITAN line, one 5 kWh unit that grows to 30 kWh, and the DELTA Pro Ultra platform, which stacks batteries and inverters further — flagship paths, not line-wide features.
Worth knowing
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 Pro Ultra X
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 12,288Wh.
Accepts up to 10,000W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
SOLIX E10 + 2×B6000
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 12,288Wh.
Accepts up to 9,000W of solar. Enough for a serious multi-panel array.
Limited ports. You'll likely need a power strip or splitter.
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, so neither locks you out of growth — decide on capacity, price, and the rest, not the expansion checkbox.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA Pro Ultra X
Our research found no owner accounts for the DELTA Pro Ultra X yetA0. The file is EcoFlow's own claims, repeated by early reviews. It lists 12kW continuous at 120/240V, enough for every circuit including a 5-ton AC, and surge handling to 45kWA1. It says the base 12.288kWh grows to 61.44kWh on one inverter and 184.32kWh across threeA2, with solar charging up to 10kWA3. EcoFlow also claims its quick-connect design cuts installation time and cost by up to 80%A4. All of that is the maker talking, and none of it has met a winter yet.
“Base config delivers 12kW continuous at 120/240V — enough to power every circuit including a 5-ton AC — scaling to 12-36kW with surge handling to 45kW via Adaptive Start.”
Sources
ecoflow.com · outboundpower.com · bobvila.com · thesolarlab.com
Anker SOLIX E10 + 2×B6000
Every entry in the Anker file describes the E10 base system with fewer batteries, so read it as evidence about the platform rather than this exact stackB0. The good reports are about the switch itself. One reviewer saw no flicker and no fan slowing when it moved to battery and back, and only learned about outages from the app historyB4. Another, in rural Ohio, said the brownouts were gone and the smart-home devices stopped rebootingB5.
The complaints are about the hardware and limits around it. A tester broke a plastic battery handle in normal useB7. A two-battery install ran central air for about four hours on a hot April dayB8, which is a smaller stack than this one but a fair warning about air conditioning.
“The Solix app is cleanly laid out and has most of what I need, but it isn't as robust as some of the others out there — Tesla Powerwall and EcoFlow's Smart Home Panel offer richer data, graphs, and integrations.”
Sources
appleinsider.com · gizmodo.com · thesolarlab.com · diysolarforum.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
- Whole-home 12kW output, massive scalability (to 184kWh), EV-grade LFP, 10kW solar, and fast install are the standout features. [DELTA Pro Ultra X · 3 entries]
- Reviewers across multiple independent outlets and a live install thread consistently flag the Solix app as the E10's weakest link — serviceable for basic setups but short on the depth, clarity, and configurability of rivals like Tesla Powerwall. [SOLIX E10 + 2×B6000 · 4 entries]
- UPS switchover is repeatedly praised as imperceptible, holding up across multiple reviewers and real storm events in different climates. [SOLIX E10 + 2×B6000 · 2 entries]
- Build-quality and setup nitpicks — a broken plastic handle on a 130lb battery module and a firmware-update bug with no recovery path during install — surfaced despite otherwise smooth day-to-day operation. [SOLIX E10 + 2×B6000 · 2 entries]
- A1
“Base config delivers 12kW continuous at 120/240V — enough to power every circuit including a 5-ton AC — scaling to 12-36kW with surge handling to 45kW via Adaptive Start.”
ecoflow.com / outboundpower.com — DELTA Pro Ultra X review · 2026 · [positive]
- A2
“Base 12.288kWh of LFP storage (6,144Wh x 2), expandable to 61.44kWh with one inverter and up to 184.32kWh with three inverters and thirty batteries.”
ecoflow.com / outboundpower.com — DELTA Pro Ultra X · 2026 · [positive]
- A3
“EV-grade full-tab LFP cells with a multi-layer safety architecture and 24/7 BMS oversight; solar charging up to 10kW.”
ecoflow.com / bobvila.com — DELTA Pro Ultra X review · 2026 · [positive]
- A4
“A quick-connect design cuts installation time and cost by up to 80%, ready in about 7 days; a CES 2026 Innovation Award Honoree at a $7,999 base price.”
ecoflow.com / thesolarlab.com — DELTA Pro Ultra X review · 2026 · [positive]
- B1
“The Solix app is cleanly laid out and has most of what I need, but it isn't as robust as some of the others out there — Tesla Powerwall and EcoFlow's Smart Home Panel offer richer data, graphs, and integrations.”
appleinsider.com — "Anker Solix E10 review: Whole home battery backups finally come within reach" · 2026-07 · [mixed]
- B2
“Anker's Solix app home screen looks a lot like the Tesla Powerwall app's, but the Time-of-Use scheduling section is confusing — only the Super Off-Peak setting actually charges the batteries from the grid; the other two off-peak options only use solar, and the app doesn't explain that upfront.”
gizmodo.com — "Anker Solix E10 review: No Power? No Problem" · 2026 · [mixed]
- B3
“The app experience isn't great — it's really basic and just not where it needs to be for a system this expensive that requires the app for control.”
thesolarlab.com — "Anker SOLIX E10 Review: Best Whole-Home Battery Backup?" · 2026 · [negative]
- B4
“I didn't see any evidence — no lights flickering, no fans slowing down, nothing — when the system moved to battery-only power and back to the grid; I only found out outages had happened by checking the app's history.”
gizmodo.com — "Anker Solix E10 review: No Power? No Problem" · 2026 · [positive]
- B5
“In rural Ohio with frequent outages, the system reliably kicked in during every storm — my brownouts are completely gone, the lights no longer flicker, and smart home devices stopped rebooting from brief power dips.”
appleinsider.com — "Anker Solix E10 review: Whole home battery backups finally come within reach" · 2026-07 · [positive]
- B6
“Anker's five-year warranty with a 60% capacity-retention guarantee is 'not encouraging' next to Tesla Powerwall's 10-year warranty promising 70% retention.”
gizmodo.com — "Anker Solix E10 review: No Power? No Problem" · 2026 · [negative]
- B7
“We actually broke one of the battery handles during normal use — they're plastic with cheap riveted hardware, which feels under-built for a 130lb battery module.”
thesolarlab.com — "Anker SOLIX E10 Review: Best Whole-Home Battery Backup?" · 2026 · [negative]
- B8
“On a hot April day, central AC only lasted about four hours before draining the two-battery setup, exposing the limits of a smaller install under heavy cooling load.”
gizmodo.com — "Anker Solix E10 review: No Power? No Problem" · 2026-04 · [negative]
- B9
“This is a high-voltage system with passive cooling — it runs completely silent. Large heat-dissipation fins eliminate the need for cooling fans entirely.”
thesolarlab.com — "Anker SOLIX E10 Review: Best Whole-Home Battery Backup?" · 2026 · [positive]
- B10
“Measured idle consumption came in around 40 watts, which is worth factoring into any battery-lifespan math on a system this size.”
thesolarlab.com — "Anker SOLIX E10 Review: Best Whole-Home Battery Backup?" · 2026 · [negative]
- B11
“There's a known bug where the firmware update required to complete setup can fail on the E10 while the Power Dock's update completes — the setup flow has no way to recover, so you have to unplug the E10 from the combiner box, pair to it directly, finish its firmware update, then reconnect it to the dock.”
diysolarforum.com — "Anker Solix E10 - Install" · 2026 · [negative]
Research compiled November 1, 2026.
Who Should Buy Which
Buy the DELTA Pro Ultra X if you…
- →Your house can ask for more than 7,680W at once: central air, a well pump, an electric range or a shop compressor overlapping.
- →A desktop PC sits on a backed-up circuit and you want a switchover rated no worse than 10ms.
- →You want outlets on the box, or you might move the system to another building later.
- →You want the headroom to grow past 12,288Wh, with EcoFlow's path running to 61.44kWh on one inverterA2.
Buy the SOLIX E10 + 2×B6000 if you…
- →Your heaviest moment stays under 7,680W, and you'd rather keep the $1,700.
- →It will cycle daily behind solar or time-of-use rates, where 4,000 rated cycles and $0.13 a lifetime kilowatt-hour pay off.
- →You want it wired into the panel and out of sight, with no fans reported on the platformB9.
If neither fits
If you need power away from the house, at a campsite, a tailgate or a job site, neither of these is the tool. Both are built to back up a building. Shop the portable 2 to 4 kWh class instead.
The Bottom Line
Take the DELTA Pro Ultra X if your house has big motors that can start together. Same battery, 4,320W more continuous output, a tighter switchover rating and outlets on the box. For a well pump and a central air compressor on the same bad afternoon, that's the money well spent.
Take the Anker if you've added up your heaviest moment and it stays under 7,680W. It does the same outage for $1,700 less, it's rated for more cycles, and it disappears into the wall. Sort out the app before the first storm.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
What's the difference between the EcoFlow DELTA Pro Ultra X and the Anker SOLIX E10 with two B6000 batteries?
Both hold 12,288Wh. The DELTA Pro Ultra X runs 12,000W continuous against 7,680W, lists a 45,000W instant surge against Anker's 10,000W, and has AC, 240V and USB outlets on the box. The Anker stack is hardwired at the panel with no outlets, is rated for 4,000 cycles against 3,500, and costs $1,700 less.
How much do they cost?
The DELTA Pro Ultra X is $7,999 and the SOLIX E10 with two B6000 batteries is $6,299, a difference of $1,700. Installation is separate for both.
Which one can run central air conditioning?
EcoFlow says the DELTA Pro Ultra X's 12kW covers every circuit including a 5-ton AC. The Anker stack is rated 7,680W continuous, which suits smaller systems. One reviewer's two-battery Anker install ran central air for about four hours on a hot day, with fewer batteries than this configuration.
Does the Anker SOLIX E10 have outlets?
No. It's hardwired at 120/240V into the home's electrical panel, so its power comes out of the wall sockets. It has no USB ports. The DELTA Pro Ultra X has two AC outlets, two 240V outlets and USB ports on the box.
Which one is quieter?
EcoFlow publishes 30dB for the DELTA Pro Ultra X. Anker publishes no noise figure for this stack. One reviewer of the base E10 describes a passively cooled design with no fans, but that review covers a smaller configuration.
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Where to buy
EcoFlow DELTA Pro Ultra XPick
$7,999.00
$7,999.00 · direct from EcoFlow
Last checked 28 days ago. Prices move — check before you buy.
Anker SOLIX E10 + 2×B6000
$6,299.00
$6,299.00 · direct from Anker
Last checked 89 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.