EcoFlow RIVER 2 240
#9 in SmallFull review
A small, quick-charging LiFePO4 station for phones, laptops, lights and a router during short outages. Fine for a weekend of camping without high-wattage appliances.
Amazon $198.99 EcoFlow $219$198.99
The EcoFlow RIVER 2 240 is the better portable power station overall, rated 3.7 to 2.7. The EcoFlow RIVER 2 240 leads on battery life, charging speed and value. The Duracell M250 wins on portability. The EcoFlow RIVER 2 240 costs $50.01 less ($198.99 vs $249).
Duracell M250
#24 in SmallFull review
For people who want a tidy desk or bedside battery for phones and laptops, with wireless charging and a small AC outlet. Anyone who needs to run appliances should buy a conventional power station.
Amazon $249 Duracell $249$249
Prices were last checked October 20, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the EcoFlow RIVER 2 240 for battery life (LiFePO4, 3,000 cycles, 5-year warranty vs Li-ion NMC, 500 cycles, 2-year warranty), charging speed (0-100% on AC in 1 h vs 0-100% on AC in 3 h 30 min) and value ($0.82 per rated Wh vs $1.14 per rated Wh).
- Choose the Duracell M250 for portability (107 Wh per kg (4.5 lb (2 kg)) vs 70 Wh per kg (7.7 lb (3.5 kg))).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every small portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | EcoFlow RIVER 2 240 | Duracell M250 |
|---|---|---|
| Overall rating | 3.7/5 | 2.7/5 |
| Value 25% | 68 $0.82 per rated Wh | 40 $1.14 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 91 LiFePO4, 3,000 cycles, 5-year warranty | 15 Li-ion NMC, 500 cycles, 2-year warranty |
| AC output 15% | 41 300 W continuous AC | 0 100 W continuous AC |
| Charging speed 10% | 95 0-100% on AC in 1 h | 16 0-100% on AC in 3 h 30 min |
| Portability 10% | 45 70 Wh per kg (7.7 lb (3.5 kg)) | 100 107 Wh per kg (4.5 lb (2 kg)) |
| Solar input 5% | 36 110 W max solar input | 50 solar input not published (neutral score used) |
| Features 5% | 55 UPS (30 ms), app | 20 100 W USB-C |
Specifications
| EcoFlow RIVER 2 240 | Duracell M250 | |
|---|---|---|
| Battery | ||
| Rated capacity | 243 Wh | 219 Wh |
| Chemistry | LiFePO4 | Li-ion NMC |
| Cycle life | 3,000 to 80% | 500 to 80% |
| Expandable | No | No |
| Output | ||
| AC output | 300 W (600 W surge) | 100 W |
| Boost mode (resistive loads) | 600 W | - |
| AC outlets | 2 total | 1 total |
| 120V 15A outlets (NEMA 5-15R) | 1 | - |
| 120V 2-prong outlets (NEMA 1-15R) | 1 | 1 |
| AC waveform | - | Modified sine wave |
| USB-C ports | - | 2 (up to 100 W each) |
| USB-A ports | - | 2 |
| 12 V car outlet | Yes | No |
| DC5521 ports | - | 0 |
| UPS / pass-through | Yes (30 ms switchover) | No |
| Charging | ||
| AC charging | 360 W | - |
| Full AC charge time | 1 h | 3 h 30 min (About 3.5 h from a USB-C wall charger, about 5.5 h on the included 60W charging dock (manufacturer); Amazon listing says 3 h by USB-C) |
| Max solar input | 110 W | - |
| Solar input voltage | 11-30V, 8A | - |
| Car charging | 100 W | - |
| Build | ||
| Weight | 7.7 lb (3.5 kg) | 4.5 lb (2 kg) |
| Dimensions | 9.6 x 8.5 x 5.7 in | 5.0 in diameter x 10.4 in tall |
| App | EcoFlow app (Wi-Fi and Bluetooth) | - |
| Warranty | 5 years | 2 years |