Anker SOLIX vs EcoFlow: tested capacity, price and warranty

Updated

On independent capacity tests, Anker SOLIX and EcoFlow are close: Anker SOLIX's 5 models and EcoFlow's 6 models both delivered 86% of their rated capacity on average. Models from the same brand differ by more than that: EcoFlow's run from 76% (RIVER 3 Plus) to 93% (DELTA Pro 3). The model you pick matters more than the brand.

Based on 11 models and 18 independent tests. Each brand sells more models than we list: we only include those with an independent test.

The short answer

Pick Anker SOLIX if

  • You want the lowest cost per usable watt-hour: the Anker SOLIX C1000 (first gen) works out at $0.49 at the price we checked, against $0.53 for the EcoFlow DELTA 3 Classic.
  • You want a longer warranty: 5 years, against 3 to 5 years for EcoFlow.
  • You want a safe bet: every Anker SOLIX model we track delivered between 81% and 90% of its rated capacity, while EcoFlow's range from 76% to 93%.
All Anker SOLIX models

Pick EcoFlow if

  • You want the highest-scoring model here: the EcoFlow DELTA Pro 3 scores 9.4, against 8.5 for Anker SOLIX's best, the C2000 Gen 2.
All EcoFlow models

Anker SOLIX and EcoFlow at a glance

Anker SOLIX and EcoFlow compared on our main measures
Measure Anker SOLIX EcoFlow
Models we track 5 6
Independent tests 7 11
Average delivered 86% 86%
Range delivered 81% to 90% 76% to 93%
Average score 8.0 / 10 8.1 / 10
Lowest cost per usable Wh $0.49 (C1000 (first gen)) Ahead $0.53 (DELTA 3 Classic)
Standard warranty 5 years Ahead 3 to 5 years
LiFePO4 battery 5 of 5 6 of 6
Expandable battery 3 of 5 5 of 6
Brand store prices $469.99 to $1,399.99 $299 to $2,799

"Ahead" marks a clear gap only: at least 2 points on capacity delivered, 0.3 on our score, 5% on cost per usable Wh, or a longer warranty.

Size by size

Small (under 500 Wh)

Closest match: the Anker SOLIX C300 (288 Wh rated) and the EcoFlow RIVER 3 Plus (286 Wh). In tests the Anker SOLIX C300 delivered 234 Wh, the EcoFlow RIVER 3 Plus 218 Wh. The EcoFlow RIVER 3 Plus scores higher on our measures, 7.6 to 7.3.

Small (under 500 Wh) models from Anker SOLIX and EcoFlow
Model Tested usable Delivered Our score Per usable Wh
EcoFlow RIVER 3 Plus 218 Wh of 286 76% 7.6 $1.37
Anker SOLIX C300 234 Wh of 288 81% 7.3 –

Mid-size (500 to 1,499 Wh)

Closest match: the Anker SOLIX C1000 Gen 2 (1,024 Wh rated) and the EcoFlow DELTA 3 (1,024 Wh). In tests both delivered about 883 Wh. The Anker SOLIX C1000 Gen 2 scores higher on our measures, 8.3 to 8.2. Per usable watt-hour the Anker SOLIX C1000 Gen 2 costs less, $0.57 against $0.71.

Mid-size (500 to 1,499 Wh) models from Anker SOLIX and EcoFlow
Model Tested usable Delivered Our score Per usable Wh
EcoFlow DELTA 3 Plus 875 Wh of 1,024 85% 8.4 $0.82
Anker SOLIX C1000 Gen 2 880 Wh of 1,024 86% 8.3 $0.57
EcoFlow DELTA 3 885 Wh of 1,024 86% 8.2 $0.71
Anker SOLIX C1000 (first gen) 950 Wh of 1,056 90% 8.0 $0.49
EcoFlow DELTA 3 Classic 947 Wh of 1,024 93% 7.8 $0.53

Large (1,500 to 2,999 Wh)

Only Anker SOLIX has a large model in our list. EcoFlow may sell one, but none has an independent test we can use yet.

Large (1,500 to 2,999 Wh) models from Anker SOLIX and EcoFlow
Model Tested usable Delivered Our score Per usable Wh
Anker SOLIX C2000 Gen 2 1,812 Wh of 2,048 89% 8.5 $0.50

Home backup (3,000 Wh and up)

Closest match: the Anker SOLIX F3000 (3,072 Wh rated) and the EcoFlow DELTA Pro (3,600 Wh). In tests the EcoFlow DELTA Pro delivered 2,948 Wh, the Anker SOLIX F3000 2,645 Wh. The Anker SOLIX F3000 scores higher on our measures, 7.7 to 7.4. Per usable watt-hour the Anker SOLIX F3000 costs less, $0.53 against $0.61.

Home backup (3,000 Wh and up) models from Anker SOLIX and EcoFlow
Model Tested usable Delivered Our score Per usable Wh
EcoFlow DELTA Pro 3 3,809 Wh of 4,096 93% 9.4 $0.73
Anker SOLIX F3000 2,645 Wh of 3,072 86% 7.7 $0.53
EcoFlow DELTA Pro 2,948 Wh of 3,600 82% 7.4 $0.61

Every Anker SOLIX and EcoFlow model we track

We may earn a commission from the store links below; it never changes our figures. How we make money

Questions

Is Anker SOLIX or EcoFlow better?

On independent capacity tests, Anker SOLIX and EcoFlow are close: Anker SOLIX's 5 models and EcoFlow's 6 models both delivered 86% of their rated capacity on average. On our score, which leaves price out, Anker SOLIX's models average 8.0 out of 10 and EcoFlow's 8.1. The highest-scoring models are the Anker SOLIX C2000 Gen 2 (8.5) and the EcoFlow DELTA Pro 3 (9.4).

Which delivers more of its rated capacity, Anker SOLIX or EcoFlow?

In independent tests, Anker SOLIX's models delivered 86% of their rated capacity on average (81% to 90%) and EcoFlow's 86% (76% to 93%). The best single result among them is the EcoFlow DELTA Pro 3 at 93%.

Which is cheaper, Anker SOLIX or EcoFlow?

At the brand-store prices we checked, unit only, Anker SOLIX runs $469.99 to $1,399.99 and EcoFlow $299 to $2,799. Per usable watt-hour, the best value is the Anker SOLIX C1000 (first gen) at $0.49 and the EcoFlow DELTA 3 Classic at $0.53. Prices change often, so check the store before you buy.

Which has the longer warranty, Anker SOLIX or EcoFlow?

Anker SOLIX: 5 years. EcoFlow: 3 to 5 years. These are the standard warranties in each model's US manual.

How we compared

Each model's figure is the median of its counted independent tests: US units at 120 V, AC output, loads of 100 W or more. A brand's average is the plain average of its models' figures, so a brand with a few very large or very small models isn't weighted toward them. Prices are from each brand's US store, unit only, on the date shown on each review; we don't show Amazon prices. Our score leaves price out. How we test and score · Every model's real capacity

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