Use-case calculator
Refrigerator during a 24 hour outage
This bundle needs about 4301 rated Wh using the fixed 0.85 usable-capacity estimate.
| Load | Watts | Hours | Load energy |
|---|---|---|---|
| Full-size refrigerator | 150 W | 24 h | 3600 Wh |
| LED light bulb | 9 W | 4 h | 36 Wh |
| Phone charging | 10 W | 2 h | 20 Wh |
Smallest matching stations
| Model | Rated Wh | Usable Wh | Headroom | MSRP fixture |
|---|
Adjust this scenario
Pick loads, hours, and whether CPAP uses an AC inverter or a compatible DC converter cable.
A CPAP is a medical device. These are runtime estimates, not medical advice or a medical-safety guarantee. Test your exact setup at home before relying on it.