Westinghouse iGen600s vs Yoshino B660 SST
What is the difference?
The Westinghouse iGen600s has 600 W of power, 1.2 kW peak, a 592 Wh battery. The Yoshino B660 SST has 660 W of power, a 602 Wh battery.
The Westinghouse iGen600s weighs 11 lb, the Yoshino B660 SST weighs 17 lb. The Westinghouse iGen600s is easier to carry.
The Westinghouse iGen600s has a 2-year warranty, the Yoshino B660 SST has a 5-year warranty.
Specs side by side
| Westinghouse iGen600s | Yoshino B660 SST | |
|---|---|---|
| Capacity (Wh) | 592 | 602 |
| Continuous (W) | 600 | 660 |
| Peak (W) | 1200 | — |
| Solar input (W) | — | — |
| Chemistry | — | NMC |
| Cycles | — | 4000 |
| Expandable | — | — |
| Weight (lb) | 11 | 17 |
| Warranty (yr) | 2 | 5 |
| Fridge run time | 11.2 h | 11.4 h |
| CPAP run time | 13.4 h | 13.6 h |
| Wi-Fi router run time | 39.1 h | 39.7 h |
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Specs as read from manufacturer pages on 2026-10-26 / 2026-10-31. Specs one maker does not list are left out of the comparison. Run times are for that appliance alone with a typical duty cycle, after inverter and depth-of-discharge losses. Sponsored links; we may earn a commission.
Common questions
Which is lighter, Westinghouse iGen600s or Yoshino B660 SST?
The Westinghouse iGen600s. Lighter: 11 lb vs 17 lb.
Which has the longer warranty, Westinghouse iGen600s or Yoshino B660 SST?
The Yoshino B660 SST. Longer warranty: 5 years vs 2 years.
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Compare other models → · All Westinghouse models · All Yoshino models