Appliance wattage chart
Typical draw from the source, how many of our 218 power stations are rated for the top of the range, and hours at that draw with 85% of the battery usable. Your appliance's label wins over any chart.
| Appliance | Watts | Stations rated for it | 1,000 Wh | 2,000 Wh |
|---|---|---|---|---|
| Laptop | 50 W | 209 | 17 h | 34 h |
| Electric blanket (single / double) | 60–100 W | 209 | 8.5 h | 17 h |
| TV (flat screen) | 120 W | 206 | 7.1 h | 14 h |
| Ceiling fan | 65–175 W | 206 | 4.9 h | 9.7 h |
| Window fan | 55–250 W | 201 | 3.4 h | 6.8 h |
| Desktop computer + monitor (awake) | 270 W | 201 | 3.1 h | 6.3 h |
| Clothes washer | 350–500 W | 158 | 1.7 h | 3.4 h |
| Furnace fan | 750 W | 130 | 1.1 h | 2.3 h |
| Dehumidifier | 785 W | 130 | 1.1 h | 2.2 h |
| Microwave | 750–1,100 W | 116 | 46 min | 1.5 h |
| Water pump (deep well) | 250–1,100 W | 116 | 46 min | 1.5 h |
| Coffee maker | 900–1,200 W | 116 | 43 min | 1.4 h |
| Aquarium | 50–1,210 W | 114 | 42 min | 1.4 h |
| Toaster oven | 1,225 W | 114 | 42 min | 1.4 h |
| Toaster | 800–1,400 W | 114 | 36 min | 1.2 h |
| Vacuum cleaner | 1,000–1,440 W | 114 | 35 min | 1.2 h |
| Space heater (portable) | 750–1,500 W | 114 | 34 min | 1.1 h |
| Clothes iron | 1,000–1,800 W | 104 | 28 min | 57 min |
| Hair dryer | 1,200–1,875 W | 82 | 27 min | 54 min |
| Dishwasher | 1,200–2,400 W | 71 | 21 min | 43 min |
| Clothes dryer | 1,800–5,000 W | 9 | 10 min | 20 min |
| Water heater (40 gallon) | 4,500–5,500 W | 9 | 9 min | 19 min |
Source: Virginia Cooperative Extension (Virginia Tech), Estimating Appliance and Home Electronic Energy Use, 2020. The same list used to be published on energy.gov.
Kitchen
How many watts does a microwave use?
Typical draw: 750–1,100 W, depending on the model and setting. 116 of our 218 power stations are rated 1,100 W or more, the top of that range. At 1,100 W, 1,000 Wh lasts about 46 min and 2,000 Wh about 1.5 h.
How many watts does a coffee maker use?
Typical draw: 900–1,200 W, depending on the model and setting. 116 of our 218 power stations are rated 1,200 W or more, the top of that range. At 1,200 W, 1,000 Wh lasts about 43 min and 2,000 Wh about 1.4 h.
How many watts does a toaster use?
Typical draw: 800–1,400 W, depending on the model and setting. 114 of our 218 power stations are rated 1,400 W or more, the top of that range. At 1,400 W, 1,000 Wh lasts about 36 min and 2,000 Wh about 1.2 h.
How many watts does a dishwasher use?
Typical draw: 1,200–2,400 W, depending on the model and setting. The drying feature greatly increases energy use. 71 of our 218 power stations are rated 2,400 W or more, the top of that range. At 2,400 W, 1,000 Wh lasts about 21 min and 2,000 Wh about 43 min.
How many watts does a toaster oven use?
Typical draw: 1,225 W. 114 of our 218 power stations are rated 1,225 W or more, the top of that range. At 1,225 W, 1,000 Wh lasts about 42 min and 2,000 Wh about 1.4 h.
Heating, cooling and water
How many watts does a space heater use?
Typical draw: 750–1,500 W, depending on the model and setting. 114 of our 218 power stations are rated 1,500 W or more, the top of that range. At 1,500 W, 1,000 Wh lasts about 34 min and 2,000 Wh about 1.1 h.
How many watts does a well pump use?
Typical draw: 250–1,100 W, depending on the model and setting. 116 of our 218 power stations are rated 1,100 W or more, the top of that range. It has a motor, which needs a startup surge above its running watts: check the station's surge rating. At 1,100 W, 1,000 Wh lasts about 46 min and 2,000 Wh about 1.5 h.
How many watts does a ceiling fan use?
Typical draw: 65–175 W, depending on the model and setting. 206 of our 218 power stations are rated 175 W or more, the top of that range. It has a motor, which needs a startup surge above its running watts: check the station's surge rating. At 175 W, 1,000 Wh lasts about 4.9 h and 2,000 Wh about 9.7 h.
How many watts does a water heater use?
Typical draw: 4,500–5,500 W, depending on the model and setting. 9 of our 218 power stations are rated 5,500 W or more, the top of that range. If yours runs on 240 V, it needs a station with 120/240 V output (18 of ours list it) and an electrician to connect it. At 5,500 W, 1,000 Wh lasts about 9 min and 2,000 Wh about 19 min.
How many watts does a dehumidifier use?
Typical draw: 785 W. 130 of our 218 power stations are rated 785 W or more, the top of that range. It has a motor, which needs a startup surge above its running watts: check the station's surge rating. At 785 W, 1,000 Wh lasts about 1.1 h and 2,000 Wh about 2.2 h.
How many watts does a window fan use?
Typical draw: 55–250 W, depending on the model and setting. 201 of our 218 power stations are rated 250 W or more, the top of that range. It has a motor, which needs a startup surge above its running watts: check the station's surge rating. At 250 W, 1,000 Wh lasts about 3.4 h and 2,000 Wh about 6.8 h.
How many watts does a furnace fan use?
Typical draw: 750 W. 130 of our 218 power stations are rated 750 W or more, the top of that range. It has a motor, which needs a startup surge above its running watts: check the station's surge rating. At 750 W, 1,000 Wh lasts about 1.1 h and 2,000 Wh about 2.3 h.
Laundry and cleaning
How many watts does a dryer use?
Typical draw: 1,800–5,000 W, depending on the model and setting. 9 of our 218 power stations are rated 5,000 W or more, the top of that range. If yours runs on 240 V, it needs a station with 120/240 V output (18 of ours list it) and an electrician to connect it. At 5,000 W, 1,000 Wh lasts about 10 min and 2,000 Wh about 20 min.
How many watts does a washing machine use?
Typical draw: 350–500 W, depending on the model and setting. 158 of our 218 power stations are rated 500 W or more, the top of that range. It has a motor, which needs a startup surge above its running watts: check the station's surge rating. At 500 W, 1,000 Wh lasts about 1.7 h and 2,000 Wh about 3.4 h.
How many watts does a vacuum use?
Typical draw: 1,000–1,440 W, depending on the model and setting. 114 of our 218 power stations are rated 1,440 W or more, the top of that range. It has a motor, which needs a startup surge above its running watts: check the station's surge rating. At 1,440 W, 1,000 Wh lasts about 35 min and 2,000 Wh about 1.2 h.
How many watts does an iron use?
Typical draw: 1,000–1,800 W, depending on the model and setting. 104 of our 218 power stations are rated 1,800 W or more, the top of that range. At 1,800 W, 1,000 Wh lasts about 28 min and 2,000 Wh about 57 min.
Electronics
How many watts does a TV use?
Typical draw: 120 W. 206 of our 218 power stations are rated 120 W or more, the top of that range. At 120 W, 1,000 Wh lasts about 7.1 h and 2,000 Wh about 14 h.
How many watts does a laptop use?
Typical draw: 50 W. 209 of our 218 power stations are rated 50 W or more, the top of that range. At 50 W, 1,000 Wh lasts about 17 h and 2,000 Wh about 34 h.
How many watts does a computer use?
Typical draw: 270 W. Computer 120 W and monitor 150 W awake; 30 W or less each asleep. 201 of our 218 power stations are rated 270 W or more, the top of that range. At 270 W, 1,000 Wh lasts about 3.1 h and 2,000 Wh about 6.3 h.
How many watts does an aquarium use?
Typical draw: 50–1,210 W, depending on the model and setting. 114 of our 218 power stations are rated 1,210 W or more, the top of that range. At 1,210 W, 1,000 Wh lasts about 42 min and 2,000 Wh about 1.4 h.
Personal care
How many watts does an electric blanket use?
Typical draw: 60–100 W, depending on the model and setting. 209 of our 218 power stations are rated 100 W or more, the top of that range. At 100 W, 1,000 Wh lasts about 8.5 h and 2,000 Wh about 17 h.
How many watts does a hair dryer use?
Typical draw: 1,200–1,875 W, depending on the model and setting. 82 of our 218 power stations are rated 1,875 W or more, the top of that range. At 1,875 W, 1,000 Wh lasts about 27 min and 2,000 Wh about 54 min.
Refrigerator and freezer
The same chart gives 725 W for a 16 cubic foot frost-free refrigerator: what it draws while the compressor runs. A fridge cycles on and off, so its average is far lower; the kWh per year on its EnergyGuide label is the better number. The refrigerator guide turns that label into watts and hours.
Running several at once
Add the watts of everything on at the same time and compare with the station's rated output; add watts × hours for everything over the day and compare with its capacity × 0.85. Heating appliances (space heater, hair dryer, toaster, coffee maker) are short and strong: they need output more than battery. Motors (well pump, fans, washer) may also need a startup surge above their running watts. The size calculator does the sums for you.