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 3.5. The EcoFlow RIVER 2 240 leads on battery life and features. The VTOMAN FlashSpeed 300 wins on value. The VTOMAN FlashSpeed 300 costs $59.01 less ($139.98 vs $198.99).
VTOMAN FlashSpeed 300
#13 in SmallFull review
A small, inexpensive LiFePO4 box for phones, laptops, CPAP and camp lights. Pick it for portability, not for running appliances.
Amazon $139.98 VTOMAN $269.99$139.98
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 LiFePO4, 3,000 cycles, 2-year warranty) and features (UPS (30 ms), app vs 100 W USB-C).
- Choose the VTOMAN FlashSpeed 300 for value ($0.61 per rated Wh vs $0.82 per rated Wh).
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 | VTOMAN FlashSpeed 300 |
|---|---|---|
| Overall rating | 3.7/5 | 3.5/5 |
| Value 25% | 68 $0.82 per rated Wh | 86 $0.61 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 | 76 LiFePO4, 3,000 cycles, 2-year warranty |
| AC output 15% | 41 300 W continuous AC | 41 300 W continuous AC |
| Charging speed 10% | 95 0-100% on AC in 1 h | 50 full AC charge time not published (neutral score used) |
| Portability 10% | 45 70 Wh per kg (7.7 lb (3.5 kg)) | 43 69 Wh per kg (7.4 lb (3.4 kg)) |
| Solar input 5% | 36 110 W max solar input | 28 90 W max solar input |
| Features 5% | 55 UPS (30 ms), app | 20 100 W USB-C |
Specifications
| EcoFlow RIVER 2 240 | VTOMAN FlashSpeed 300 | |
|---|---|---|
| Battery | ||
| Rated capacity | 243 Wh | 230 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 3,000 to 80% | 3,000 3000+ cycles to 80% |
| Expandable | No | - |
| Output | ||
| AC output | 300 W (600 W surge) | 300 W (600 W surge) |
| Boost mode (resistive loads) | 600 W | - |
| AC outlets | 2 total | 2 total |
| 120V 15A outlets (NEMA 5-15R) | 1 | 2 |
| 120V 2-prong outlets (NEMA 1-15R) | 1 | - |
| USB-C ports | - | 1 (100 W) |
| USB-A ports | - | 3 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | - | 1 |
| UPS / pass-through | Yes (30 ms switchover) | - |
| Charging | ||
| AC charging | 360 W | 90 W |
| Full AC charge time | 1 h | - |
| Max solar input | 110 W | 90 W |
| Solar input voltage | 11-30V, 8A | 12-30V DC input (90W max) |
| Car charging | 100 W | - |
| Build | ||
| Weight | 7.7 lb (3.5 kg) | 7.4 lb (3.4 kg) |
| Dimensions | 9.6 x 8.5 x 5.7 in | - |
| App | EcoFlow app (Wi-Fi and Bluetooth) | - |
| Warranty | 5 years | 2 years |