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Appliance Wattage Chart for Portable Power Stations

Typical running watts, startup estimates, duty cycles, and a 4-hour capacity planning column. Labels and power meters are more accurate.

How to use this table: find your appliance, then multiply its running watts by the hours you need. Divide by about 0.85 for usable battery efficiency. The last column assumes 4 hours.
ApplianceTypical runningStartup estimateDuty cycleWh for 4h
Refrigerator200 W1,200 W35%941 Wh
Chest freezer200 W1,200 W35%941 Wh
CPAP without humidifier60 W100 W100%282 Wh
CPAP with humidifier120 W150 W100%565 Wh
Wi-Fi router15 W30 W100%71 Wh
Starlink60 W100 W100%282 Wh
Laptop65 W120 W100%306 Wh
Desktop PC400 W700 W100%1,882 Wh
Monitor40 W80 W100%188 Wh
TV100 W200 W100%471 Wh
Phone charger15 W35 W100%71 Wh
LED light10 W25 W100%47 Wh
Microwave1,200 W1,800 W100%5,647 Wh
Coffee maker1,000 W1,500 W100%4,706 Wh
Electric kettle1,500 W1,800 W100%7,059 Wh
Toaster1,200 W1,500 W100%5,647 Wh
Blender400 W800 W100%1,882 Wh
Slow cooker250 W350 W100%1,176 Wh
Instant Pot800 W1,200 W100%3,765 Wh
Space heater1,500 W1,800 W100%7,059 Wh
Electric blanket150 W220 W100%706 Wh
Box fan60 W120 W100%282 Wh
Window AC1,200 W2,200 W100%5,647 Wh
Portable AC1,200 W2,200 W100%5,647 Wh
Central AC3,500 W7,000 W100%16,471 Wh
Hair dryer1,500 W1,800 W100%7,059 Wh
Iron1,400 W1,800 W100%6,588 Wh
Vacuum900 W1,500 W100%4,235 Wh
Sump pump800 W2,000 W35%3,765 Wh
Well pump1,500 W3,000 W35%7,059 Wh
Furnace blower600 W1,000 W100%2,824 Wh
Dehumidifier600 W1,000 W100%2,824 Wh
Washing machine700 W1,200 W100%3,294 Wh
Dryer3,000 W5,000 W100%14,118 Wh
EV Level 1 charging1,440 W1,800 W100%6,776 Wh
Power drill charger70 W120 W100%329 Wh
Circular saw1,400 W2,200 W100%6,588 Wh
Security camera8 W15 W100%38 Wh
Electric grill1,500 W1,800 W100%7,059 Wh
Appliance wattage varies by model and age. Use the label or a plug-in power meter for a real design. This table is a planning estimate.
Use the tools: runtime calculator · model comparison · all guides.