EcoFlow RIVER 2 Pro (700)vsYoshino B660 SST
Head-to-head comparison of scores, specs, and features.
EcoFlow RIVER 2 Pro (700)
59.3Grade B-
Price
$549.00
AC Power
800W
Yoshino B660 SST
60.0Grade B-
Price
$549.00
AC Power
660W
Yoshino B660 SSTwins by0.67points overall.
The Verdict
Overall take
Buy EcoFlow RIVER 2 Pro (700) if
- Better Energy Density Wh Per Kg: 91.8 vs 35.6
- Better Weight: 7.8 vs 16.9
- Better Ac Power Surge: 1600 vs 900
Buy Yoshino B660 SST if
- Better Ups Functionality: Yes vs EPS
- Better Battery Lifespan Cycles: 4000 vs 3000
- Better Ups Switch Time: 20ms vs 30
Top 3 Key Differences
Ups Functionality
EPSvs Yes
Score: 0 vs 100
Energy Density Wh Per Kg
91.8vs 35.6
Score: 88.3 vs 30
Battery Lifespan Cycles
3000vs 4000
Score: 77.5 vs 100
Performance by Category
ChargingTie
EcoFlow RIVER 2 Pro (700)
85.6
Yoshino B660 SST
85.0
AC PowerEcoFlow RIVER 2 Pro (700) wins
EcoFlow RIVER 2 Pro (700)
66.7
Yoshino B660 SST
59.7
ConnectivityTie
EcoFlow RIVER 2 Pro (700)
75.0
Yoshino B660 SST
75.0
PriceEcoFlow RIVER 2 Pro (700) wins
EcoFlow RIVER 2 Pro (700)
86.5
Yoshino B660 SST
82.7
BatteryYoshino B660 SST wins
EcoFlow RIVER 2 Pro (700)
32.6
Yoshino B660 SST
42.0
PhysicalEcoFlow RIVER 2 Pro (700) wins
EcoFlow RIVER 2 Pro (700)
96.1
Yoshino B660 SST
70.9
Advanced FeaturesYoshino B660 SST wins
EcoFlow RIVER 2 Pro (700)
21.5
Yoshino B660 SST
58.9
WarrantyTie
EcoFlow RIVER 2 Pro (700)
100.0
Yoshino B660 SST
100.0
Full Technical Specifications
| Feature | EcoFlow RIVER 2 Pro (700) | Yoshino B660 SST |
|---|---|---|
| Charging | ||
| Ac Charge Speed | 70 | 120 |
| Charger Type | AC wall adapter (X-Stream fast charging, 940W max input) | AC adapter (DC In), Car (12V), Solar (XT60/MC4), USB-C PD |
| Fast Charging | Yes | Yes |
| Max Solar Input | 220 | 100 |
| Max Solar Panels | 2 | 1 |
| Pass Through Charging | Yes | Yes |
| Smart Charging | Yes | Yes |
| Solar Connector Type | XT60i | MC4 to XT60 (XT60 port) |
| Solar Panel Compatibility | EcoFlow 110W, 160W, 220W Portable Solar Panels; XT60 connector; 11-50V, 13A, 220W max input | Yoshino SP100 (12-30VDC) |
| AC Power | ||
| Ac Output Amps | 7A max | 3 outlets, 120VAC, 60Hz (pure sine wave) |
| Ac Power Continuous | 800 | 660 |
| Ac Power Surge | 1600 | 900 |
| Ac Wave Quality | Pure Sine Wave | Pure Sine Wave |
| Connectivity | ||
| App Control | Yes | Yes |
| Bluetooth | Yes | Yes |
| Wifi Connectivity | Yes | Yes |
| Wireless Charging | No | No |
| Price | ||
| Base Price | 549.00 | 549.00 |
| Bundle Price | 659.00 | — |
| Cost Per Wh | 0.77 | 0.91 |
| Price Description | Standalone unit $549; bundle with 220W Portable Solar Panel $659 | Sale $549 (reg. $699) |
| Battery | ||
| Battery Capacity Wh | 716 | 602 |
| Battery Lifespan Cycles | 3000 | 4000 |
| Expandable Capacity | No | No |
| Max Extra Batteries | 0 | 0 |
| Product Info | ||
| Brand | EcoFlow | Yoshino |
| Model Name | RIVER 2 Pro (700) | B660 SST |
| Product Url | https://us.ecoflow.com/products/river-2-pro-700-portable-power-station | https://yoshinopower.com/products/b660-solid-state-portable-power-station |
| DC Power | ||
| Dc Output | USB-A: 2x12W; USB-C: 1x100W; Car 12.6V/10A 126W; 2x DC5521 12.6V/3A | 12V DC: 2 ports 12.6VDC/10A (126W total); USB-C: 20W; USB-C PD: 100W; USB-A: 2 ports 12W each |
| Physical | ||
| Dimensions | 27.0 x 26.0 x 22.6 cm | 29.7 x 20.3 x 25.4 cm |
| Energy Density Wh Per Kg | 91.8 | 35.6 |
| Noise Level | — | 38 dB |
| Operating Temp | 14°F to 113°F | Discharge: 14 to 140F (-10 to 60C); Charge: 32 to 131F (0 to 55C) |
| Portable | Yes | Yes |
| Weight | 7.8 kg · 17.2 lbs | 16.9 kg · 37.3 lbs |
| Advanced Features | ||
| Parallel Expansion | No | No |
| Ups Functionality | EPS | Yes |
| Ups Switch Time | 30 | 20ms |
| Warranty | ||
| Warranty | 5 | 5 |