EcoFlow RIVER 2 Pro
#28 in Mid-sizeFull review
A 768Wh LiFePO4 station for camping and short outages that recharges from the wall in about an hour. Worth it at a discount, but newer models offer more USB-C and solar input.
Amazon $368.99$368.99
The EcoFlow RIVER 2 Pro is the better portable power station overall, rated 3.9 to 3.8. The EcoFlow RIVER 2 Pro leads on portability and battery life. The VTOMAN FlashSpeed 1000 wins on value, AC output and solar input. The VTOMAN FlashSpeed 1000 costs $39 less ($329.99 vs $368.99).
VTOMAN FlashSpeed 1000
#29 in Mid-sizeFull review
A well-priced 828Wh LiFePO4 station that charges fast from the wall, good for home backup of essentials and car camping.
Amazon $339.99 VTOMAN $329.99$329.99
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 Pro for portability (93 Wh per kg (18.2 lb (8.3 kg)) vs 58 Wh per kg (31.7 lb (14.4 kg))) and battery life (LiFePO4, 3,000 cycles, 5-year warranty vs LiFePO4, 3,000 cycles, 2-year warranty).
- Choose the VTOMAN FlashSpeed 1000 for value ($0.40 per rated Wh vs $0.48 per rated Wh), AC output (1,000 W continuous AC vs 800 W continuous AC) and solar input (300 W max solar input vs 220 W max solar input).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every mid-size portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | EcoFlow RIVER 2 Pro | VTOMAN FlashSpeed 1000 |
|---|---|---|
| Overall rating | 3.9/5 | 3.8/5 |
| Value 25% | 83 $0.48 per rated Wh | 94 $0.40 per rated Wh |
| Tested capacity 15% | 44 80% of rated capacity delivered (2 tests) | 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% | 30 800 W continuous AC | 44 1,000 W continuous AC |
| Charging speed 10% | 89 0-100% on AC in 1 h 10 min | 89 0-100% on AC in 1 h 10 min |
| Portability 10% | 87 93 Wh per kg (18.2 lb (8.3 kg)) | 23 58 Wh per kg (31.7 lb (14.4 kg)) |
| Solar input 5% | 16 220 W max solar input | 25 300 W max solar input |
| Features 5% | 75 UPS (30 ms), 100 W USB-C, app | 80 UPS, expandable, 100 W USB-C |
Independent capacity tests
EcoFlow RIVER 2 Pro
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| OutdoorGearLab | 620 Wh | 80.7% | Spec table lists 620 Wh measured output and 81% usable; review text says 600 Wh. Load not stated. Measured full recharge about 75-78 minutes. |
| nextpit | 604 Wh | 78.6% | Full discharge of the 230V European model; 887 Wh drawn from the wall to recharge. |
VTOMAN FlashSpeed 1000
No independent test published yet.
Specifications
| EcoFlow RIVER 2 Pro | VTOMAN FlashSpeed 1000 | |
|---|---|---|
| Battery | ||
| Rated capacity | 768 Wh | 828 Wh |
| Tested usable capacity | 612 Wh (80%) | - |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 3,000 to 80% | 3,000 3000+ cycles |
| Expandable | No | Yes, up to 2,376 Wh |
| Output | ||
| AC output | 800 W (1,600 W surge) | 1,000 W (2,000 W surge) |
| Boost mode (resistive loads) | 1,600 W | - |
| AC outlets | 4 total | 3 total |
| 120V 15A outlets (NEMA 5-15R) | 4 | 3 |
| AC waveform | Pure sine wave | - |
| USB-C ports | 1 (100 W) | 2 (up to 100 W each) |
| USB-A ports | - | 4 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | 2 |
| UPS / pass-through | Yes (30 ms switchover) | Yes |
| Charging | ||
| AC charging | 940 W | 700 W |
| Full AC charge time | 1 h 10 min (0-100% in 70 minutes (manufacturer)) | 1 h 10 min |
| Max solar input | 220 W | 300 W |
| Solar input voltage | 11-50V, 13A | 10-50V (Anderson) |
| Car charging | 100 W | 200 W |
| Build | ||
| Weight | 18.2 lb (8.3 kg) | 31.7 lb (14.4 kg) |
| Dimensions | 10.6 x 10.2 x 8.9 in | - |
| App | EcoFlow app (Wi-Fi and Bluetooth) | - |
| Warranty | 5 years | 2 years |