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$198.99
The EcoFlow RIVER 2 240 is the better portable power station overall, rated 3.7 to 3.3. The EcoFlow RIVER 2 240 leads on battery life, charging speed and features. The MARBERO M823 wins on portability and value. The MARBERO M823 costs $55 less ($143.99 vs $198.99).
MARBERO M823
#25 in SmallFull review
A very light, low-cost 237Wh station for charging phones, cameras and a CPAP on short trips. Buyers who need longer battery life or laptop-speed USB-C should look at LiFePO4 models.
Amazon $143.99$143.99
Prices were last checked October 22, 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 Lithium-ion, 1-year warranty), charging speed (0-100% on AC in 1 h vs 0-100% on AC in 6 h) and features (UPS (30 ms), app vs no UPS, expansion or app).
- Choose the MARBERO M823 for portability (114 Wh per kg (4.6 lb (2.1 kg)) vs 70 Wh per kg (7.7 lb (3.5 kg))) and 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 | MARBERO M823 |
|---|---|---|
| Overall rating | 3.7/5 | 3.3/5 |
| 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 | 15 Lithium-ion, 1-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 | 0 0-100% on AC in 6 h |
| Portability 10% | 45 70 Wh per kg (7.7 lb (3.5 kg)) | 100 114 Wh per kg (4.6 lb (2.1 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 | 0 no UPS, expansion or app |
Specifications
| EcoFlow RIVER 2 240 | MARBERO M823 | |
|---|---|---|
| Battery | ||
| Rated capacity | 243 Wh | 237 Wh |
| Chemistry | LiFePO4 | Lithium-ion |
| Cycle life | 3,000 to 80% | - |
| Expandable | No | - |
| Output | ||
| AC output | 300 W (600 W surge) | 300 W (375 W surge) |
| Boost mode (resistive loads) | 600 W | - |
| AC outlets | 2 total | 2 total |
| 120V 15A outlets (NEMA 5-15R) | 1 | 1 |
| 120V 2-prong outlets (NEMA 1-15R) | 1 | 1 |
| AC waveform | Pure sine wave | Pure sine wave |
| USB-C ports | 1 (60 W) | 1 (18 W) |
| USB-A ports | 2 | 4 |
| 12 V car outlet | Yes | No |
| DC5521 ports | 0 | - |
| UPS / pass-through | Yes (30 ms switchover) | - |
| Charging | ||
| AC charging | 360 W | - |
| Full AC charge time | 1 h | 6 h ("Fully quick charged in 6hrs" from the wall per the listing; 8 hr from a 12V car socket) |
| Max solar input | 110 W | - |
| Solar input voltage | 11-30V, 8A | 16.4-24V |
| Car charging | 100 W | - |
| Build | ||
| Weight | 7.7 lb (3.5 kg) | 4.6 lb (2.1 kg) |
| Dimensions | 9.6 x 8.5 x 5.7 in | 8.15 x 5.83 x 3.90 in |
| App | EcoFlow app (Wi-Fi and Bluetooth) | - |
| Warranty | 5 years | 1 years |