What size power station do I need for Refrigerator / freezer?
Refrigerator / freezer
Default appliance profile before model-specific measurements.
Using the supplied baseline, a refrigerator/freezer is estimated to use about 1,260 Wh per day: 150 W running draw, 600 W startup/surge, 24 hours per day, and a 35% duty cycle. The estimate carries ±25% usage uncertainty.
Using 88% inverter efficiency, 90% usable battery capacity, and a 15% reserve margin, the resulting one-day battery target is about 1,830 Wh nominal capacity. Actual use can vary by appliance model, ambient conditions, settings, and load; the evidence does not provide model-specific measurements.
- Battery target: Look for about 1,830 Wh nominal capacity for this one-day baseline.
- Inverter requirement: The inverter should accommodate at least the stated 600 W startup demand; the evidence does not specify a recommended continuous-output rating.
- Verify before sizing: Use a plug-in power meter or manufacturer energy label when available, because the baseline has ±25% uncertainty.
Using the default load profile, refrigerator / freezer consumes about 1260 Wh/day. A conservative one-day battery target is about 1829 Wh nominal capacity, while the inverter should cover at least 600 W of startup demand.
Assumptions behind the calculation
- Running draw: 150 W
- Startup/surge: 600 W
- Default use: 24 h/day
- Duty cycle: 35%
- Usage uncertainty: ±25% before model-specific measurements
Actual energy use varies by appliance model, ambient conditions, settings and load. A plug-in power meter or manufacturer energy label is preferable when available.
Runtime by battery size
| Station capacity | Continuous-draw runtime | Default usage profile |
|---|---|---|
| 300 Wh | 1.6 h at continuous draw | 0.2 default-profile days |
| 500 Wh | 2.6 h at continuous draw | 0.3 default-profile days |
| 1000 Wh | 5.3 h at continuous draw | 0.6 default-profile days |
| 1500 Wh | 7.9 h at continuous draw | 0.9 default-profile days |
| 2000 Wh | 10.6 h at continuous draw | 1.3 default-profile days |
| 3000 Wh | 15.8 h at continuous draw | 1.9 default-profile days |
Use your actual household loads
The calculator combines this appliance with refrigerators, networking, pumps, medical equipment and other essentials so simultaneous wattage and motor startup are not ignored.