Head-to-head test
EcoFlow DELTA Pro Ultra vs Anker SOLIX E10
Real-world runtimes, scenario verdicts, and ownership costs compared — which wins for your use case.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
EcoFlow
DELTA Pro Ultra
8,583Power Score · The AC & Fridge Zone
$4,099.00 list · direct from EcoFlow
Anker
SOLIX E10
9,115Power Score · The AC & Fridge Zone
$4,299.00 list · direct from Anker
Spec deltas
The EcoFlow DELTA Pro Ultra and Anker SOLIX E10 compete for the same spot. Similar LiFePO4 capacity, similar price range, different brands behind them. In this matchup, ecosystem, app quality, and warranty reputation matter as much as raw specs. We'd buy the DELTA Pro Ultra.
The SOLIX E10's 6,144Wh keeps a fridge going for 35 hours. The DELTA Pro Ultra's 6,144Wh manages 35 hours. The bigger unit rides out a full weekend outage. The smaller one needs a recharge by Saturday night. But if your actual use case is camping, tailgating, or keeping devices charged, the DELTA Pro Ultra does the job at 181.8 lbs and $4,099 — no overkill, no regret.
Pick the DELTA Pro Ultra if you want maximum capability and room to grow. Go with the SOLIX E10 if you need the heavier-duty specs for demanding loads. Most buyers overlook this: the SOLIX E10 costs ~$0.17/kWh over its full lifespan, which adds up significantly over years of regular use. Keep scrolling for the full breakdown. The scenario verdicts below hold a few surprises.
Bench Notes
What each unit does well, where it falls short, and the trade-offs that matter.
EcoFlow DELTA Pro Ultra
With a massive 7,200W output (and 10,800W surge), the DELTA Pro Ultra can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 181.8 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion.
Strengths
- +Costs $200 less
- +Lighter by 8.8 lb
- +Longer warranty
Trade-offs
- –Very heavy unit that may be difficult for one person to lift.
Anker SOLIX E10
With a massive 7,680W output (and 1,000,090W surge), the SOLIX E10 can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 190.6 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion.
Strengths
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Very heavy unit that may be difficult for one person to lift.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
Either unit
Both handle two nights comfortably. The DELTA Pro Ultra uses 40% and the SOLIX E10 uses 40%. With this little difference, pick based on weight and portability instead. The lighter unit wins for car camping.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
Either unit
Both survive the blackout with similar margin. Since the capacity difference doesn't matter here, focus on which unit has UPS mode — seamless switchover protects your router and PC from the split-second power gap.
Battery budget usedlower = more headroom
LOAD Fridge 150W×8h · Router + Modem 20W×8h · LED Lights (4 bulbs) 40W×6h · Phone Charger 15W×3h
SCN-03 · 8 hours · needs 320Wh
CPAP Overnight
Sleep therapy without interruption — the #1 medical use case
Either unit
Both are wildly overqualified for CPAP. You're using 6% or less. Save your money and buy whichever is cheaper; the extra capacity is completely wasted on a 40W overnight load. Put the savings toward a second battery for multi-night trips.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
Either unit
Both power your workstation all day without breaking a sweat. At these utilization levels, prioritize the unit with better USB-C output for direct laptop charging. It's more convenient than using the AC inverter and wastes less energy.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
Either unit
Both handle game day easily. Since capacity isn't the deciding factor, consider weight: the lighter unit is easier to load into a truck bed. Also check if either has Bluetooth speaker-level noise. Fan sound matters in social settings.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Either unit
Both units cover a full day of van life, but barely. You'll need consistent solar recharge to sustain this daily. Check which unit accepts more solar input for faster recovery between days.
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
Dead heat — both run this 205W load for roughly 25.5h. Pick on price, weight, or ports.
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 0–348.2hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–69.6hHigh-Draw Appliances
These reveal the real limitsscale 0–5.2h¹ 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 10, 2026
Verdict: the DELTA Pro Ultra
The DELTA Pro Ultra outperforms the SOLIX E10 in key areas. It offers . Crucially, it costs $200 less, making it the smarter financial choice.
Overall score margin: 8,583 vs 9,115 (−6.2%)
List prices as of July 10, 2026. The links below open EcoFlow's and Anker's current prices.
$4,099.00 list · direct from EcoFlow
or check the SOLIX E10 price$4,299.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 10, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Full specifications
| Specification | DELTA Pro Ultra★ Our pick | SOLIX E10 |
|---|---|---|
| Price | $4,099.00 Check latest price | $4,299.00 Check latest price |
| Capacity (Wh) | 6144 | 6144 |
| Output (W) | 7200 | 7680 |
| Surge Peak | 10800W | 10000W (90 min) |
| AC Outlets | 3 | Hardwired (120/240V) |
| USB-C Charging Outputs | 100W | 0 |
| Solar Input (W) | 5600 | 9000 |
| Weight (lbs) | 181.8 | 190.6 |
| UPS | Yes (0ms) | Yes (<20ms) |
| Charging Cycles | 3500 | 4000 |
| Chemistry | LiFePO4 | LiFePO4 |
| Warranty (Years) | 10 | 5 |
| Battery Expansion Feasibility | Yes | Yes |
| App Control | Yes | Yes |
| $/Watt Hour | $.67 | $.70 |
| Noise Level (db) | <30 | Not Specified |
| Solar Input Type | MC4 | Dual MPPT (30-450V) |
| USB-A Ports | 2 | 0 |
| USB-C Ports | 2 | 0 |
| Cost per Whᵈ | $0.67/Wh | $0.70/Wh |
ᵈ Derived: price ÷ rated capacity.
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.
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.
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 (181.8 lbs) is a two-person lift. The SOLIX E10 (190.6 lbs) is firmly a two-person lift. It goes where you put it and stays there. That's a 9 lb difference.
UPS Speed: true uninterruptible (0ms) vs standby (<20ms)
The DELTA Pro Ultra switches to battery in 0ms (true uninterruptible (0ms)), while the SOLIX E10 takes 20ms (standby (<20ms)). Even the most sensitive equipment (NAS arrays, medical devices) won't notice the switch. This matters if you're using it as a home UPS for always-on equipment.
Warranty Value Comparison
The DELTA Pro Ultra gives you 2.4 years of warranty per $1,000 spent, vs the SOLIX E10's 1.2 years. That's 2.1× more coverage per dollar. An underrated factor if you're keeping this unit for years.
SOLIX E10: Noise Level Not Disclosed
The DELTA Pro Ultra publishes its noise level (30dB), but the SOLIX E10 doesn't. Brands that don't disclose noise specs often have louder units. If noise matters to you (CPAP users, apartment dwellers), this is worth investigating before buying.
Full record above — the Test Desk pick is the DELTA Pro Ultra.
Check DELTA Pro Ultra price →or check the SOLIX E10 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.
| Metric | DELTA Pro Ultra | SOLIX E10 |
|---|---|---|
| Purchase price | $4,099.00 | $4,299.00 |
| Lifetime energy delivery | 21,504 kWh | 24,576 kWh |
| Cost per lifetime kWh | $0.19 | $0.17 |
| Cost per warranty year | $410/yr | $860/yr |
| Battery lifespan | 9.6yr daily · 33.7yr weekends · 67.3yr weekly | 11yr daily · 38.5yr weekends · 76.9yr weekly |
Analyst note
The DELTA Pro Ultra is cheaper to buy, but the SOLIX E10 is cheaper to own. At $0.17/kWh over its lifetime vs $0.19/kWh, the SOLIX E10'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.
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. Gen 2 lineup offers exceptional $/Wh value — some of the best in the market.
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
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 6,144Wh.
Accepts up to 5,600W 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
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 6,144Wh.
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, but the SOLIX E10's higher solar ceiling (9,000W vs 5,600W) gives it the stronger off-grid growth path — more panels can feed a bigger bank as it grows.
The Bottom Line
The full picture comes down to this. The DELTA Pro Ultra edges ahead on our overall analysis, but the margin is narrow enough that your specific use case should drive the decision. Review the scenario verdicts above — if the SOLIX E10 wins in the scenarios that match your life, it's the right choice regardless of aggregate scores.
If neither the DELTA Pro Ultra nor the SOLIX E10 feels like the right fit, your power needs probably sit outside what these two target. For lighter use — weekend camping or phone/laptop charging — you'd be overpaying for capacity you'll rarely tap. Consider a unit in the 500–1,500Wh range instead. Prices on portable power stations fluctuate frequently. Both EcoFlow and Anker discount regularly, so check the current price before committing. Prime Day and Black Friday pricing typically drops 20-30%.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the SOLIX E10 worth $200 more than the DELTA Pro Ultra?
The short answer: yes, if you'll actually use the extra capability. The SOLIX E10 costs $200 more, but that premium buys you a longer-lasting battery rated for 4,000 cycles — that's 11 years at daily use; 3,400W faster solar charging for quicker off-grid recovery. On a cost-per-watt-hour basis, you're paying $0.70/Wh vs $0.67/Wh. Factor in cycle life and the math flips: the SOLIX E10 costs $0.17/kWh over its lifetime vs $0.19/kWh. The "expensive" unit is actually cheaper to own. For regular use, we'd pay the premium.
How fast can each unit recharge from solar panels in real conditions?
On paper, the SOLIX E10 accepts 9,000W vs the DELTA Pro Ultra's 5,600W of solar input. What the spec sheet won't tell you: solar panels typically deliver only 60-80% of their rated output due to panel angle, cloud cover, and temperature. In realistic conditions, expect full recharge in about 1.0 hours for the SOLIX E10 and 1.6 hours for the DELTA Pro Ultra. That gap widens on cloudy days, when the SOLIX E10's higher input ceiling captures more of whatever sunlight is available. One more thing: summer gives you ~7 productive solar hours per day. Winter drops to ~4. If solar is your primary recharge method, the SOLIX E10's advantage is substantial.
Is EcoFlow or Anker more reliable for long-term ownership?
Both brands have strengths and trade-offs. EcoFlow: Mixed. 2-5 years depending on model (DELTA Pro Ultra line gets 10 years). Some users report smooth claims; others report runarounds. Register your product to extend coverage. Anker: 5-year warranty standard on portable stations, 10-year on home energy systems. Historically very reliable, though some recent firmware updates have altered product functionality without notice or rollback option. One piece of advice from the power station community: regardless of brand, buy from Costco or Amazon. Their return policies provide a safety net that manufacturer warranties alone can't match, especially for a product you'll rely on in emergencies. Both brands use LFP (lithium iron phosphate) batteries in their current lineup, the most proven chemistry for longevity and safety.
Bottom line: should I buy the DELTA Pro Ultra or the SOLIX E10?
We'd buy the DELTA Pro Ultra. Cheaper and more capable. That combination is rare. The SOLIX E10 doesn't offer a compelling reason to spend more unless you specifically need a feature unique to the Anker ecosystem (expansion batteries, app integrations). Otherwise, clear call.
Where to buy
EcoFlow DELTA Pro UltraPick
$4,099.00
$4,099.00 list · direct from EcoFlow
Anker SOLIX E10
$4,299.00
$4,299.00 list · direct from Anker
Prices may vary by retailer and are subject to change.