EcoFlow RIVER 3 Max PlusvsYoshino B660 SST
Head-to-head comparison of scores, specs, and features.
VS
Winner
EcoFlow RIVER 3 Max Plus
83.9Grade B+
Price
$469.00
AC Power
600W
Yoshino B660 SST
72.2Grade B
Price
$549.00
AC Power
660W
EcoFlow RIVER 3 Max Pluswins by11.74points overall.
The Verdict
Overall take
Buy EcoFlow RIVER 3 Max Plus if
- Better Expandable Capacity: Yes vs No
- Better Energy Density Wh Per Kg: 181.8 vs 35.6
- Better Cost Per Wh: 0.55 vs 0.91
Buy Yoshino B660 SST if
- Better Warranty: 5 vs 2
- Better Battery Lifespan Cycles: 4000 vs 3000
- Consider for different needs
Top 3 Key Differences
Expandable Capacity
Yesvs No
Score: 100 vs 0
Energy Density Wh Per Kg
181.8vs 35.6
Score: 100 vs 30
Warranty
2vs 5
Score: 51 vs 100
Performance by Category
ChargingTie
EcoFlow RIVER 3 Max Plus
85.6
Yoshino B660 SST
85.0
AC PowerTie
EcoFlow RIVER 3 Max Plus
61.0
Yoshino B660 SST
59.7
ConnectivityTie
EcoFlow RIVER 3 Max Plus
75.0
Yoshino B660 SST
75.0
PriceEcoFlow RIVER 3 Max Plus wins
EcoFlow RIVER 3 Max Plus
96.9
Yoshino B660 SST
82.7
BatteryEcoFlow RIVER 3 Max Plus wins
EcoFlow RIVER 3 Max Plus
71.9
Yoshino B660 SST
42.0
PhysicalEcoFlow RIVER 3 Max Plus wins
EcoFlow RIVER 3 Max Plus
100.0
Yoshino B660 SST
70.9
Advanced FeaturesEcoFlow RIVER 3 Max Plus wins
EcoFlow RIVER 3 Max Plus
66.7
Yoshino B660 SST
58.9
WarrantyYoshino B660 SST wins
EcoFlow RIVER 3 Max Plus
51.0
Yoshino B660 SST
100.0
Full Technical Specifications
| Feature | EcoFlow RIVER 3 Max Plus | Yoshino B660 SST |
|---|---|---|
Charging | ||
| Ac Charge Speed | 60 | 120 |
| Charger Type | X-Stream AC (380W), Solar (220W), Car/Alternator (220W, 11-55V) | AC adapter (DC In), Car (12V), Solar (XT60/MC4), USB-C PD |
| Fast Charging | Yes | Yes |
| Max Solar Input | 220 | 100 |
| Max Solar Panels | — | 1 |
| Pass Through Charging | Yes | Yes |
| Smart Charging | Yes | Yes |
| Solar Connector Type | XT60i | MC4 to XT60 (XT60 port) |
| Solar Panel Compatibility | EcoFlow solar panels up to 220W | Yoshino SP100 (12-30VDC) |
AC Power | ||
| Ac Output Amps | 3 outlets | 3 outlets, 120VAC, 60Hz (pure sine wave) |
| Ac Power Continuous | 600 | 660 |
| Ac Power Surge | 1200 | 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 | 469.00 | 549.00 |
| Bundle Price | 469.00 | — |
| Cost Per Wh | 0.55 | 0.91 |
| Price Description | Sale price $469 (regular $717). Spring Sale 2026. Includes RIVER 3 Plus (286Wh) + EB600 Extra Battery (572Wh) = 858Wh total system. | Sale $549 (reg. $699) |
Battery | ||
| Battery Capacity Wh | 858 | 602 |
| Battery Lifespan Cycles | 3000 | 4000 |
| Expandable Capacity | Yes | No |
| Extra Battery Capacity | 572 | — |
| Max Extra Batteries | 1 | 0 |
Product Info | ||
| Brand | EcoFlow | Yoshino |
| Model Name | RIVER 3 Max Plus | B660 SST |
| Product Url | https://us.ecoflow.com/products/river-3-max-plus-river-3-plus-extra-battery-600?variant=54335221137481 | https://yoshinopower.com/products/b660-solid-state-portable-power-station |
DC Power | ||
| Dc Output | — | 12V DC: 2 ports 12.6VDC/10A (126W total); USB-C: 20W; USB-C PD: 100W; USB-A: 2 ports 12W each |
Physical | ||
| Dimensions | 23.4 x 23.1 x 14.7 cm | 29.7 x 20.3 x 25.4 cm |
| Energy Density Wh Per Kg | 181.8 | 35.6 |
| Noise Level | 30 | 38 dB |
| Operating Temp | Charge: 0°C to 45°C; Discharge: -10°C to 45°C | Discharge: 14 to 140F (-10 to 60C); Charge: 32 to 131F (0 to 55C) |
| Portable | Yes | Yes |
| Weight | 4.7 kg · 10.4 lbs | 16.9 kg · 37.3 lbs |
Advanced Features | ||
| Parallel Expansion | No | No |
| Ups Functionality | Yes | Yes |
| Ups Switch Time | 10 | 20ms |
Warranty | ||
| Warranty | 2 | 5 |