Product comparison · Home Backup Power Systems
EcoFlow DELTA Pro Ultra vs Anker SOLIX E10
The EcoFlow DELTA Pro Ultra scores 7.8 and ranks 2nd of 10 in Home Backup Power Systems; the Anker SOLIX E10 scores 7.6 and ranks 3rd of 10 in Home Backup Power Systems. The DELTA Pro Ultra leads on backup readiness, the E10 on battery life.
All 13 EcoFlow products 
EcoFlow DELTA Pro Ultra
$4,199 · 2nd of 10 in Home Backup Power Systems
Buy Now- Backup Readiness — 10 against 7
7.8
7.6
All 10 Anker SOLIX products 
Anker SOLIX E10
$3,999 · 3rd of 10 in Home Backup Power Systems
Buy Now- Battery Life — 8 against 6
Across everything we scored, EcoFlow DELTA Pro Ultra sits 0.15 ahead — led by backup readiness.
Verdict
DELTA Pro Ultra ahead · +0.15 (7.8 vs 7.6)Pick the EcoFlow DELTA Pro Ultra when
Backup readiness matters10vs7
A faster backup switchover matters0 ms (online)vs11-20 ms
You need UL 2743 listedonly the DELTA Pro Ultra holds it
Pick the Anker SOLIX E10 when
Recharging matters6vs4
Battery life matters8vs6
Scored 9 October 2026 from published specs and owner reviews. We don't buy or test units. How we score
Most common complaints
From each product's own owner reviews and retailer ratings.
EcoFlow DELTA Pro Ultra
- Reliability, tagged negative in 18 mentions
- Charging performance, tagged negative in 11 mentions
- Quality, tagged negative in 11 mentions
Anker SOLIX E10
- No built-in screen, per one reviewer
- Visible flicker at switchover, per one channel
- App less developed than rivals', per two reviewers
Where the EcoFlow DELTA Pro Ultra and Anker SOLIX E10 differ
Scores on a 0–10 scale. Each row is one criterion, biggest difference first.
Recharging
+2 Anker SOLIXBattery Life
+2 Anker SOLIXCapacity
tiedPower Output
tiedVerification
tiedBoth: UL 9540 listed; only the EcoFlow DELTA Pro Ultra: UL 2743 listed.
Warranty & Support
tiedValue
one side unscoredWhat EcoFlow DELTA Pro Ultra and Anker SOLIX E10 owners report
Independent sources, scored for each model. DELTA Pro Ultra on 5 of five, E10 on 5.
The Anker SOLIX E10 reading covers the whole brand.
What they say
EcoFlow DELTA Pro Ultra
- DELTA Pro Ultra owners in r/Ecoflow_community report a solar arc-fault loop on day three (November 2024), battery charge levels drifting apart after a firmware update (May 2025), a display failure with a battery down more than 30 percent replaced under warranty (July 2025), and 66 percent round-trip efficiency on time-of-use with a ticket open two months (January 2026).
- Others describe it running a 3-ton air conditioner through a nine-hour outage with a switchover the microwave clock did not notice (January 2026), and a whole-house transfer-switch setup drawing 30 to 35 W at idle (December 2024).
Anker SOLIX E10
- Owner threads about Anker SOLIX stations mix praise and service complaints.
- In an r/anker thread on where to buy an F2600 (July 2026), owners praised the direct store's 30-day price match and quick shipping.
- In the same thread, one owner said Anker Direct refused valid returns and charged return fees, and a Costco buyer described over a week of once-a-night replies on a PS400 panel claim.
- A UK owner in r/LinusTechTips (June 2026) needed about 30 emails before a manager honoured a warranty replacement.
Both readings are about these exact models.
What they say
EcoFlow DELTA Pro Ultra
- TheSolarLab, which says it is not sponsored but uses affiliate links, measured 98 percent efficiency at a load near 6 kW, a 120 V charge in 4 hours 4 minutes against 3 hours 20 claimed, and a surge held at about 9,200 W for 10 seconds.
- It found no pass-through on the generator port while charging and stuttering on a 2,200 W car lift, and gave idle draw as about 45 W in one article and 60 W in another.
Anker SOLIX E10
- TheSolarLab, which earns affiliate commission and carries an Anker discount code, measured 87 percent efficiency, about 40 W of idle draw and surges near 30 kW on one power module with two batteries, and faulted the missing screen, an unfinished app and 120 V-only charging without an inlet box or Power Dock (October 2026).
- XDA, on hardware and installation Anker provided, scored it 9 of 10, saw no flicker through sub-20 ms switchovers and measured 45 W of idle draw (June 2026).
- Digital Trends (4.5 of 5, April 2026), TechRadar (4.5 of 5, August 2026) and AppleInsider (4 of 5, July 2026) rated whole-home installs with the Power Dock.
- Gizmodo scored it 3.5 of 5 and noticed no switchover during two small outages (June 2026).
YouTube
+3 EcoFlowBoth readings are about these exact models.
What they say
EcoFlow DELTA Pro Ultra
- HOBOTECH, posting with affiliate links, drew 5,390 Wh on AC, 88 percent, and 5,000 Wh on DC, measured about 53 W of AC idle draw and 42 dB of fan noise, and sustained 6,400 W (January 2024).
- Will Prowse's "Worth $4,999?!" carries an EcoFlow code under his disclosure that every video includes paid promotion or free product (November 2024, about 329,000 views).
Anker SOLIX E10
- I-Got-DIBS, who bought a power module, two batteries and a Power Dock with personal funds, saw a flicker at switchover, called the unmarked emergency-stop button a hazard and called the standing sale pricing misleading (about 16,000 views).
Amazon
tiedBoth readings are about these exact models.
What they say
EcoFlow DELTA Pro Ultra
- The DELTA Pro Ultra listing (B0CQXMZ5BK) reads 4.1 from 374 ratings, 72 percent five-star and 14 percent one-star, pooled across its Smart Home Panel 2, extra-battery and DELTA Pro Ultra X styles.
- Amazon's review tags are positive on reliability (42 of 60 mentions) and power capacity (18 of 20), and negative on charging performance (11 of 26).
Anker SOLIX E10
- The E10 listings on Amazon, sold by AnkerDirect, share one review file across seven configurations, including the power module with one battery (B0GFD4QB7B), and it reads 4.5 from 11 ratings, 78 percent five-star and 8 percent one-star.
Owner reviews
+1 Anker SOLIXThe EcoFlow DELTA Pro Ultra reading covers its product line; the Anker SOLIX E10 reading covers the whole brand.
What they say
EcoFlow DELTA Pro Ultra
- No US retailer holds ten native reviews of the DELTA Pro Ultra; Lowe's file of 47 leaves two native ones.
- Across the DELTA Pro family, Home Depot holds 19 native reviews of the DELTA Pro at 4.3 and 12 of the DELTA Pro 3 at 4.3, Walmart 11 of the DELTA Pro at 4.4, and Costco's two-unit DELTA Pro system reads 3.8 across 35.
Anker SOLIX E10
- Home Depot's five Anker SOLIX station files hold 269 reviews, and setting aside 115 marked as customer reviews from Anker and 17 from its Reviewer Program leaves 137 native reviews from 2024 to 2026, 53 of them ratings without text.
- Native owners describe running refrigerators for 8.8 to 32 hours, CPAP machines and a well pump, and praise fast recharging, while complaints gather on the F3800, with failed solar or DC inputs, a display failing after a year and a shutdown at about 1,800 W of UPS load.
- Lowe's shared C1000X Gen 2 and C2000X Gen 2 file holds eight native reviews among 40.
- Best Buy's 96 C1000X and C1000X Gen 2 reviews all carry the Incentivized or Tech Insider Network tag, and Walmart's 66 C1000X-series reviews and most of Sam's Club's are syndicated from Anker or incentivised, so they are not counted.
EcoFlow DELTA Pro Ultra vs Anker SOLIX E10: pros and cons
What each one does well, and where it falls short.
EcoFlow DELTA Pro Ultra
Strengths
- 0 ms online UPS mode
- 7,200 W at 120/240 V
- Expands to 30 kWh per inverter
- 5,600 W of solar over two inputs
- UL 9540 listing by model in SGS's directory
Drawbacks
- Over four hours to charge on 120 V in TheSolarLab's test
- AC idle draw of about 53 W in HOBOTECH's test
- 181.8 lb across two modules
- Stutters on high-surge shop equipment in TheSolarLab's test
- Cords and panel sold separately
Anker SOLIX E10
Strengths
- 7,680 W continuous at 120/240 V
- 9,000 W solar input at up to 450 V
- Expands to 30.7 kWh per power module
- NEMA 4 enclosure for outdoor installs
- About 40 W idle draw in TheSolarLab's test
- UL 9540 listing by model in SGS's directory
Drawbacks
- No outlets without the separately sold power strip
- 1,800 W 120 V charging without an inlet box or Power Dock
- No built-in screensettings live in the app
- 10 kW turbo output needs a second battery
EcoFlow DELTA Pro Ultra vs Anker SOLIX E10: the numbers
Price, scores and rank, then only the specs that differ. Green marks the side with more.
7.8
2nd of 10 in Home Backup
- Rated cyclesEcoFlow3,000-3,999 cyclesAnker SOLIX More4,000-5,999 cycles
- Backup switchoverEcoFlow More0 ms (online)Anker SOLIX11-20 ms
- Safety listingsEcoFlow MoreUL 9540 listed, UL 2743 listedAnker SOLIXUL 9540 listed
- WeightEcoFlow181.8 lbAnker SOLIX190.6 lb
Same on both
- 6,000 Wh or moreCapacity
- 6,000 W or moreAC output
- 120/240 V split-phaseOutput voltage
- LiFePO4Battery chemistry
- 4,000 W or moreSolar input
- 20 kWh or moreExpandable to
- 5 YearsWarranty
We earn a commission if you buy through these links. It never changes a score.
Not sold on either one?
The top-scored and the cheapest other pick from each brand.
More from EcoFlow 2 scored in Home Backup Power Systems
What’s different
- Safety listings: no UL 2743 listed
Pick it ifRecharging matters10vs4
What’s different
- Capacity: 4,000-5,999 Wh, not 6,000 Wh or more
- AC output: 4,000-5,999 W, not 6,000 W or more
Pick it ifRecharging matters8vs4
More from Anker SOLIX 2 scored in Home Backup Power Systems
What’s different
- Capacity: 3,000-3,999 Wh, not 6,000 Wh or more
- Solar input: 2,000-3,999 W, not 4,000 W or more
Pick it ifRecharging matters8vs6
What’s different
- Capacity: 3,000-3,999 Wh, not 6,000 Wh or more
- Solar input: 2,000-3,999 W, not 4,000 W or more
Pick it ifRecharging matters7vs6
EcoFlow DELTA Pro Ultra vs Anker SOLIX E10: common questions
Is the EcoFlow DELTA Pro Ultra better than the Anker SOLIX E10?
On our scores, the EcoFlow DELTA Pro Ultra is ahead, 7.8 against 7.6. The EcoFlow DELTA Pro Ultra leads on backup readiness (10 against 7). The Anker SOLIX E10 leads on battery life (8 against 6) and recharging (6 against 4).
Which has more safety listings, the EcoFlow DELTA Pro Ultra or the Anker SOLIX E10?
The EcoFlow DELTA Pro Ultra. The EcoFlow DELTA Pro Ultra lists UL 9540 listed and UL 2743 listed; the Anker SOLIX E10 lists UL 9540 listed.
What do owners say about the EcoFlow DELTA Pro Ultra and the Anker SOLIX E10?
Across 5 independent sources scored for both, the EcoFlow DELTA Pro Ultra is ahead on Reddit and YouTube; the Anker SOLIX E10 is ahead on Google and Owner reviews; Amazon is level.
More home backup power systems comparisons
More head-to-heads with these two.
Scores calculated 9 October 2026 · Products excluded where fewer than two independent sources cover them · · How we score