OUPES Exodus 350
#5 in SmallFull review
A light, well-warrantied LiFePO4 station for laptops, CPAP, phones and keeping Wi-Fi up during outages.
Amazon $199.99 OUPES $299$199.99
The OUPES Exodus 350 and the EcoFlow RIVER 3 Plus are evenly matched, rated 3.8 and 3.8. The OUPES Exodus 350 leads on value, portability and battery life. The EcoFlow RIVER 3 Plus wins on AC output and features. The OUPES Exodus 350 costs $99.01 less ($199.99 vs $299).
EcoFlow RIVER 3 Plus
#6 in SmallFull review
A compact LiFePO4 station for camping, laptop work and router/modem UPS duty, with the option to add capacity later.
Amazon $299 EcoFlow $299$299
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 OUPES Exodus 350 for value ($0.69 per rated Wh vs $1.05 per rated Wh), portability (69 Wh per kg (9.2 lb (4.2 kg)) vs 61 Wh per kg (10.4 lb (4.7 kg))) and battery life (LiFePO4, 4,000 cycles, 5-year warranty vs LiFePO4, 3,000 cycles, 5-year warranty).
- Choose the EcoFlow RIVER 3 Plus for AC output (600 W continuous AC vs 350 W continuous AC) and features (UPS (10 ms), expandable, 100 W USB-C, app vs UPS (10 ms), 140 W USB-C, app).
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 | OUPES Exodus 350 | EcoFlow RIVER 3 Plus |
|---|---|---|
| Overall rating | 3.8/5 | 3.8/5 |
| Value 25% | 79 $0.69 per rated Wh | 48 $1.05 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% | 100 LiFePO4, 4,000 cycles, 5-year warranty | 91 LiFePO4, 3,000 cycles, 5-year warranty |
| AC output 15% | 51 350 W continuous AC | 83 600 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 95 0-100% on AC in 1 h |
| Portability 10% | 44 69 Wh per kg (9.2 lb (4.2 kg)) | 28 61 Wh per kg (10.4 lb (4.7 kg)) |
| Solar input 5% | 80 240 W max solar input | 73 220 W max solar input |
| Features 5% | 75 UPS (10 ms), 140 W USB-C, app | 100 UPS (10 ms), expandable, 100 W USB-C, app |
Specifications
| OUPES Exodus 350 | EcoFlow RIVER 3 Plus | |
|---|---|---|
| Battery | ||
| Rated capacity | 288 Wh | 286 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 4000+ cycles to 80% | 3,000 to 80% |
| Expandable | No | Yes, up to 858 Wh |
| Output | ||
| AC output | 350 W (600 W surge) | 600 W (1,200 W surge) |
| Boost mode (resistive loads) | - | 1,200 W |
| AC outlets | 2 total | 3 total |
| 120V 15A outlets (NEMA 5-15R) | - | 3 |
| 120V 20A outlets (NEMA 5-20R) | 1 | - |
| 120V 2-prong outlets (NEMA 1-15R) | 1 | - |
| USB-C ports | 2 (up to 140 W each) | 1 (100 W) |
| USB-A ports | 2 | 2 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 0 | - |
| UPS / pass-through | Yes (10 ms switchover) | Yes (10 ms switchover) |
| Charging | ||
| AC charging | 200 W | 380 W |
| Full AC charge time | - | 1 h |
| Max solar input | 240 W | 220 W |
| Solar input voltage | 12-35V | - |
| Car charging | - | 220 W |
| Build | ||
| Weight | 9.2 lb (4.2 kg) | 10.4 lb (4.7 kg) |
| Dimensions | 9.5 x 8.8 x 5.9 in | 9.2 x 9.1 x 5.8 in |
| App | OUPES app (Wi-Fi/Bluetooth) | Wi-Fi + Bluetooth |
| Warranty | 5 years | 5 years |