BLUETTI AC2A vs EcoFlow RIVER 2
These are not the same class. One carries noticeably more battery than the other, so this is really a question about how much power you need rather than which brand builds better.
One is a size up
EcoFlow RIVER 2 holds about 19% more battery — 243Wh against 204Wh — and that is what decides how long either one lasts on the same load.
Both invert to 300W, 2 outlets, so the same appliances are on and off the table for either.
BLUETTI AC2A takes 200W of solar against 110W, which only matters if a panel is your way back to full — and matters a great deal if it is.
EcoFlow RIVER 2 refills faster from the wall, accepting 360W against 270W.
Drawn from 7 specifications each maker publishes, of which 7 differ. We have not handled either machine — see our methodology.
Side by side
| Specification | BLUETTI AC2A | EcoFlow RIVER 2 |
|---|---|---|
| Battery capacity | 204Wh | 243Whbetter |
| AC output | 300W, 2 outlets | 600W (surge 600W) |
| Max solar input | 200Wbetter | 110W |
| AC input | 270W | 360Wbetter |
| Cell chemistry | LiFePO4 | LFP |
| Weight | 7.9 lbs | 7.7lbs |
| Dimensions | 9.8x6.2x6.9in | 9.6 x 8.5 x 5.7inches |
What the extra battery buys you
Watt-hours are hard to picture, so here is each pack as runtime on the loads a machine this size is usually bought for. Both columns assume 85% inverter efficiency — the conservative end of what these are rated at — so read every figure as a floor.
| Load | BLUETTI AC2A | EcoFlow RIVER 2 |
|---|---|---|
| Phone (10Wh per charge) | 17 charges | 20 charges |
| Laptop (60W) | 2.9 hours | 3.4 hours |
| CPAP, no humidifier (40W) | 4.3 hours | 5.2 hours |
| Camera batteries (15Wh each) | 11 charges | 13 charges |
| LED camp lights (10W) | 17 hours | 21 hours |
From solar alone, at 70% of the panel input each maker quotes — a realistic day rather than a lab figure — the BLUETTI AC2A needs about 1.5 hours of good sun to refill , and the EcoFlow RIVER 2 about 3.2 hours.
Published by only one of them
A figure missing from a spec sheet is not a zero — it is a number the maker chose not to state. These appear on one page and not the other, so they cannot be compared, only noted.
- BLUETTI AC2A — Cycle life: 3,000+ cycles to 80%
- BLUETTI AC2A — AC outlets: 2 x 120V/2.5A
- BLUETTI AC2A — Operating temperature: 32°F - 104°F / 0°C - 40°C
- BLUETTI AC2A — Charge time: 1.2 Hours (270W Turbo)
- EcoFlow RIVER 2 — DC output: 100W max
- EcoFlow RIVER 2 — USB-A output: 12W max
Where this comparison stops
Everything above is what the makers publish, not what either machine did in front of us. We own neither, so there is no noise measurement, no thermal behaviour under sustained load, and no view on how either holds up after two years. Makers also measure differently — cycle life at 80% capacity is not the same test as cycle life at 70% — so figures that look comparable sometimes are not. Treat this as a way to build a shortlist quickly, and read the caveats on our methodology page before you let a number decide.
Check current prices
Neither figure above is a price. These two move independently and often, and whichever is discounted this week is usually the answer when the specifications are as close as they are here.
- BLUETTI AC2A on Amazon — search results for this model, as we do not have its listing on file
- EcoFlow RIVER 2 on Amazon — search results for this model, as we do not have its listing on file
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Specifications retrieved 2026-09-17 from bluettipower.com and us.ecoflow.com. Figures change without notice; check the maker's page before buying.