BLUETTI AC2A vs EcoFlow RIVER 3
Technical comparison · Ultraportable
Output and weight are nearly identical, 300 W continuous and about 3.5 kg each, with 205 Wh for the BLUETTI AC2A and 245 Wh for the EcoFlow RIVER 3, going by manufacturer-declared figures. It comes down to a 5-year warranty with more solar input, or a quieter unit.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 0.2048 kWh | 0.245 kWh |
| Continuous output | 300 W | 300 W |
| Peak output | 600 W | 600 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 1118.16 €/kWh | 1057.14 €/kWh |
| List price | 229 € | 259 € |
| Weight | 3.6 kg | 3.5 kg |
| Dimensions (W×D×H) | — | 25.5 × 21.2 × 11.3 cm |
| Outlets | ||
| AC outlets | Yes | Yes |
| How long it lasts | ||
| Battery life cycles | 1825 cicli | 730 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | 3000 cicli | 3000 cicli |
| Capacity at end of cycle life | 80 % | 80 % |
| Warranty | 5 anni | 2 anni |
| The numbers | ||
| Cost of stored energy | 0.613 €/kWh | 1.448 €/kWh |
| Energy density | 56.9 Wh/kg | 70 Wh/kg |
| Power-to-capacity ratio | 1.46 C | 1.22 C |
| Identity | ||
| Use tier | F1 — Outlet-sized (up to 1 kWh) | F1 — Outlet-sized (up to 1 kWh) |
| Price | ||
| Price | 229 € | ~200–450 € |
| Category specs | ||
| Expandable | Yes | — |
| Fastest USB-C | 100 W | 100 W |
| Maximum charge power | 0.27 kW | 0.305 kW |
| 0–80% charge time | 45 min | — |
| Maximum solar input | 200 W | 110 W |
| Backup power | UPS | UPS |
| Switchover time | 20 ms | 10 ms |
| Mounting | Portable | Portable |
| Minimum temperature | -20 °C | — |
| Maximum temperature | 40 °C | — |
| Noise level | 45 dB | 30 dB |
| App required for setup | No | — |
The differences that matter
- Warranty, 5 years vs 2 → after two years the second is uncovered; the first still has three.
- Solar input, 200 W vs 110 W → only the first can use a 200 W panel in full.
- Noise, 45 dB vs 30 dB → the first's fan stands out in a quiet room.
- Capacity, 205 Wh vs 245 Wh → at a 100 W load the second lasts about half an hour longer.
Which one to choose
Choose BLUETTI AC2A if…
you use the battery with a 200 W portable panel while camping or on a boat and want to keep it for years: a 5-year warranty against 2, a 200 W solar input against 110 W, and it is expandable. You accept 205 Wh of capacity and a 45 dB fan that is noticeable beside your bed.
Choose EcoFlow RIVER 3 if…
you keep it next to you at night or plugged into a router and computer: 30 dB and switchover in 10 ms instead of 20, with 245 Wh of capacity. You accept a 110 W solar input and a 2-year warranty.
Where to buy
Paid link: the price for you does not change.
As an Amazon Associate I earn from qualifying purchases.
The purchase links are the same as on the two product pages and don't influence the verdict. The product pages have the complete data.