A warning about brand-level conclusions
I tested two or three units per brand, not entire ranges: three EcoFlow (Delta 3, Delta Pro 3, River 2 Pro), three Bluetti (Elite 100 V2, Elite 200 V2, AC70), three Anker (SOLIX C1000 Gen 2, F3800 Plus, C300) and two Jackery (Explorer 1000 v2, 2000 v2).
What I can say is that every unit went through the same test: charged to full, drained to shutdown on a constant 300 W load with a meter at the AC outlet, recharged from empty on a wall socket, weighed on the same scale, and measured for noise at one metre. So the comparisons below are like for like.
Measured efficiency by brand
| Unit | Brand | Rated | My measured usable |
|---|---|---|---|
| EcoFlow Delta Pro 3 Highest | EcoFlow | 4,096 Wh | 3,772 Wh · 92.1% |
| Bluetti Elite 200 V2 | Bluetti | 2,074 Wh | 1,902 Wh · 91.7% |
| Anker SOLIX F3800 Plus | Anker | 3,840 Wh | 3,448 Wh · 89.8% |
| Bluetti AC70 | Bluetti | 768 Wh | 684 Wh · 89.1% |
| Bluetti Elite 100 V2 | Bluetti | 1,024 Wh | 892 Wh · 87.1% |
| Anker SOLIX C1000 Gen 2 | Anker | 1,024 Wh | 884 Wh · 86.3% |
| Jackery Explorer 1000 v2 | Jackery | 1,070 Wh | 905 Wh · 84.6% |
| EcoFlow Delta 3 | EcoFlow | 1,024 Wh | 862 Wh · 84.2% |
| Jackery Explorer 2000 v2 | Jackery | 2,042 Wh | 1,702 Wh · 83.3% |
| Anker SOLIX C300 | Anker | 288 Wh | 232 Wh · 80.6% |
| EcoFlow River 2 Pro | EcoFlow | 768 Wh | 615 Wh · 80.1% |
- Brand
- EcoFlow
- Rated
- 4,096 Wh
- My measured usable
- 3,772 Wh · 92.1%
- Brand
- Bluetti
- Rated
- 2,074 Wh
- My measured usable
- 1,902 Wh · 91.7%
- Brand
- Anker
- Rated
- 3,840 Wh
- My measured usable
- 3,448 Wh · 89.8%
- Brand
- Bluetti
- Rated
- 768 Wh
- My measured usable
- 684 Wh · 89.1%
- Brand
- Bluetti
- Rated
- 1,024 Wh
- My measured usable
- 892 Wh · 87.1%
- Brand
- Anker
- Rated
- 1,024 Wh
- My measured usable
- 884 Wh · 86.3%
- Brand
- Jackery
- Rated
- 1,070 Wh
- My measured usable
- 905 Wh · 84.6%
- Brand
- EcoFlow
- Rated
- 1,024 Wh
- My measured usable
- 862 Wh · 84.2%
- Brand
- Jackery
- Rated
- 2,042 Wh
- My measured usable
- 1,702 Wh · 83.3%
- Brand
- Anker
- Rated
- 288 Wh
- My measured usable
- 232 Wh · 80.6%
- Brand
- EcoFlow
- Rated
- 768 Wh
- My measured usable
- 615 Wh · 80.1%
One brand pattern does show up: all three Bluetti units delivered 87% or more, and every one beat both Jackery units. That's three units, but it's consistent.
The other brands are all over the place. EcoFlow holds both the best result and the worst. The spread within EcoFlow's range — 92.1% down to 80.1% — is wider than the spread between brand averages.
Where the brands genuinely differ
EcoFlow builds the best to live with
This surprised me. EcoFlow's three units took three of my four highest hands-on ratings: the Delta 3 and Delta Pro 3 tied for the top at 4.3 out of 5, and the River 2 Pro scored 4.2. The common thread is the app — I rated it 5 out of 5 on both Delta units and 4 on the River, and it's the only app I'd describe as genuinely useful rather than merely functional.
EcoFlow also builds for expansion: the Delta 3 to 5 kWh, the Delta Pro 3 to 48 kWh as a system.[1][2] Its Delta units switched over in 10 ms. And the Delta Pro 3 is the highest-scoring unit I tested.
Bluetti builds for solar, and delivers its ratings
Beyond efficiency, Bluetti's solar ceilings are the highest in every class it competes in: 1,000 W on both the Elite 100 V2 and Elite 200 V2, against 400–600 W from rivals at the same capacity.[4][5] On my panels they accepted 940 W and 960 W. The Elite 200 V2 has the longest rated cycle life I've seen at 6,000 to 80%, and the highest measured score on the site.
The Elite 100 V2 is also the quietest unit I tested — 34 dBA at about 500 W.
Bluetti's weakness is consistency of feel. The Elite 200 V2 is a 53 lb two-hand lift with only four AC outlets; the AC70's fans run often and its plastic feels cheap. And Bluetti's documentation disagrees with itself: the Elite 100 V2's manual says 50 dB maximum while its marketing says 30 dB, and the AC70's manual says 850 W AC input while its marketing says 950 W.[4][6][7][8] I measured 34 dBA and 950 W respectively — so the marketing was closer on input and a touch optimistic on noise.
Jackery builds light
The Explorer 1000 v2 is the lightest 1 kWh unit I tested at 23.8 lb, with the best handle I used, and the Explorer 2000 v2 has the best usable-watt-hours-per-pound ratio on the site at 43.1. If carrying is the constraint, Jackery wins consistently.
Three range-wide weaknesses come with it. Both units cap solar at 400 W — the lowest ceilings for their size. Jackery rates cycle life to 70% of original capacity where its rivals rate to 80%, under the same 4,000-cycle headline.[9][10] And both units scored at the bottom of my hands-on ratings, at 3.8 and 3.6 out of 5, mainly on small screens, few outlets and a fast-charge toggle hidden in the app.
Anker builds output for the money
The SOLIX C1000 Gen 2 puts out 2,000 W where its rivals manage 1,500–1,800 W, and it's the best value per usable watt-hour in the 1 kWh class. The F3800 Plus held 6,000 W through my test — 50% more than the Delta Pro 3 — for $1,300 less, and it accepted 3,050 W of solar.
Anker's weakness is documentation and software. The C1000 Gen 2's UltraFast charging is buried in the app and reset after a firmware update. Its spec table leaves the battery chemistry field blank.[11] And the F3800 Plus page has given two different weights and two different solar inputs — my scale and panels settled on 136 lb and 3,050 W, the higher figures in both cases.[12]
How honest were the published claims?
Where a manufacturer claim could be checked against my measurement, this is how it went.
| Claim | Manufacturer says | I measured | Verdict |
|---|---|---|---|
| Jackery 2000 v2 noise at full load | 45 dB | 55 dBA | 10 dB louder |
| Bluetti Elite 100 V2 noise, marketing | 30 dB at 600 W | 34 dBA at ~500 W | Slightly louder |
| Anker C1000 Gen 2 recharge | 49 min | 52 min | 6% slower |
| EcoFlow Delta 3 recharge | 56 min | 58 min | 4% slower |
| EcoFlow River 2 Pro recharge | 70 min | 72 min | 3% slower |
| Jackery 2000 v2 recharge | 1 h 45 | 1 h 44 | Accurate (fast mode) |
| Bluetti AC70 UPS transfer | 20 ms | 20 ms | Accurate |
| EcoFlow Delta Pro 3 peak AC input | 1,800 W | 1,820 W | Met |
| Bluetti Elite 100 V2 recharge | 1.8 h | 1 h 12 | Beat it |
- Manufacturer says
- 45 dB
- I measured
- 55 dBA
- Verdict
- 10 dB louder
- Manufacturer says
- 30 dB at 600 W
- I measured
- 34 dBA at ~500 W
- Verdict
- Slightly louder
- Manufacturer says
- 49 min
- I measured
- 52 min
- Verdict
- 6% slower
- Manufacturer says
- 56 min
- I measured
- 58 min
- Verdict
- 4% slower
- Manufacturer says
- 70 min
- I measured
- 72 min
- Verdict
- 3% slower
- Manufacturer says
- 1 h 45
- I measured
- 1 h 44
- Verdict
- Accurate (fast mode)
- Manufacturer says
- 20 ms
- I measured
- 20 ms
- Verdict
- Accurate
- Manufacturer says
- 1,800 W
- I measured
- 1,820 W
- Verdict
- Met
- Manufacturer says
- 1.8 h
- I measured
- 1 h 12
- Verdict
- Beat it
On top of that, every unit accepted within 6% of its stated solar ceiling. That's a better record than this category's reputation suggests. The clear outlier was noise: the Jackery Explorer 2000 v2 measured ten decibels above its published full-load figure.[10]
Which brand for which job
| If you are | Look at | Because |
|---|---|---|
| Carrying it any distance | Jackery | Best usable watt-hours per pound, and the best handle |
| Recharging from panels | Bluetti | 1,000 W ceilings in the 1 and 2 kWh classes |
| Living with it every day | EcoFlow | Best app, best build, highest hands-on ratings |
| Planning to expand | EcoFlow | The only expandable 1 kWh unit, and 48 kWh systems |
| Running high-draw loads | Anker | 2,000 W from 1 kWh; 6,000 W from the F3800 Plus |
| Cycling daily for years | Bluetti | 6,000 cycles to 80% on the Elite 200 V2 |
| Sleeping beside it | Bluetti | The Elite 100 V2 was the quietest I tested |
| Buying on a budget | Bluetti or Anker | Lowest cost per usable watt-hour I measured |
- Look at
- Jackery
- Because
- Best usable watt-hours per pound, and the best handle
- Look at
- Bluetti
- Because
- 1,000 W ceilings in the 1 and 2 kWh classes
- Look at
- EcoFlow
- Because
- Best app, best build, highest hands-on ratings
- Look at
- EcoFlow
- Because
- The only expandable 1 kWh unit, and 48 kWh systems
- Look at
- Anker
- Because
- 2,000 W from 1 kWh; 6,000 W from the F3800 Plus
- Look at
- Bluetti
- Because
- 6,000 cycles to 80% on the Elite 200 V2
- Look at
- Bluetti
- Because
- The Elite 100 V2 was the quietest I tested
- Look at
- Bluetti or Anker
- Because
- Lowest cost per usable watt-hour I measured
FAQ
Which is the best power station brand?
None, consistently. In my testing Bluetti delivered the most of its ratings, EcoFlow was the best to live with, Jackery carried best and Anker gave the most output per dollar. The variation within EcoFlow's own range was wider than the variation between brands.
Is Jackery or EcoFlow better?
For carrying, Jackery — lighter per usable watt-hour, with a better handle. For almost everything else, EcoFlow: more outlets, a far better app, faster switchover, higher solar ceilings, expandability and cycles rated to 80% rather than 70%.[9][1]
Is Bluetti a good brand?
On my evidence, yes. All three Bluetti units delivered 87% or more of their rating, its solar ceilings and cycle ratings are the best here, and the Elite 100 V2 was the quietest unit I tested. Its documentation is inconsistent, and the cheaper AC70 feels cheaper.
Which brand has the most honest specifications?
On the claims I could check, most were within a few percent. Bluetti's Elite 100 V2 beat its recharge claim comfortably. The largest miss was Jackery's: the Explorer 2000 v2 measured 55 dBA at full load against a published 45 dB.
Does the brand matter at all?
Less than the model. Each brand does have a consistent house style, so the brand is a reasonable shortcut to a shortlist. It's a poor substitute for checking the specific unit's measured figures.
Buy the model, use the brand as a shortlist
My overall pick across all four brands is the EcoFlow Delta 3 — and the highest-scoring unit I tested is EcoFlow's Delta Pro 3. But that's a statement about two products, not a brand: EcoFlow also built the least efficient unit on my bench.
Each brand has a specialism worth using as a filter. Jackery if you carry it. Bluetti if the sun refills it, or you sleep beside it. EcoFlow if you want the best everyday experience or a system that grows. Anker if you need output for the money.
What none of them deserve is loyalty. The logo on the case doesn't tell you what's inside it — the measurement does.
Sources
- EcoFlow. DELTA 3 Portable Power Station — specifications. Manufacturer spec · accessed 5 September 2026
- EcoFlow. DELTA Pro 3 Portable Power Station — specifications. Manufacturer spec · accessed 5 September 2026
- EcoFlow. DELTA 3 Plus Portable Power Station — specifications. Manufacturer spec · accessed 5 September 2026
- Bluetti. Elite 100 V2 User Manual v2.1. Manufacturer manual · accessed 5 September 2026
- Bluetti. Elite 200 V2 — specifications. Manufacturer spec · accessed 5 September 2026
- Bluetti. Elite 100 V2 — specifications. Manufacturer spec · accessed 5 September 2026
- Bluetti. AC70 User Manual. Manufacturer manual · accessed 5 September 2026
- Bluetti. AC70 Solar Generator — specifications. Manufacturer spec · accessed 5 September 2026
- Jackery. Explorer 1000 v2 — specifications. Manufacturer spec · accessed 5 September 2026
- Jackery. Explorer 2000 v2 — specifications. Manufacturer spec · accessed 5 September 2026
- Anker SOLIX. SOLIX C1000 Gen 2 — specifications. Manufacturer spec · accessed 5 September 2026
- Anker SOLIX. SOLIX F3800 Plus — specifications. Manufacturer spec · accessed 5 September 2026