Can a power station run a space heater?
Usually not for long, and often not at all. Most space heaters use 1,500 W, which is more than many portable power stations can output and enough to empty a battery in minutes.
All runtimes assume 87% inverter efficiency and are estimates. Your real results depend on your devices, the battery’s age and the temperature.
| Battery size | Needs an inverter of at least | Runtime on a 1,500 W heater |
|---|---|---|
| 1,000 Wh | 1,500 W (most 1,000 Wh units are lower) | about 35 minutes, if it runs at all |
| 2,000 Wh | 1,500 W | about 70 minutes |
| 3,000 Wh | 1,500 W | about 105 minutes |
Check your inverter first
If your unit’s output rating is lower than the heater’s watts, it will shut off or refuse to run. Your unit’s specs list the maximum output.
Better ways to stay warm
- An electric blanket or heated mattress pad uses far less power, often 60–100 W, so it can run through the night on a 1,000 Wh battery.
- Heat one small room and close the door.
- Use blankets, sleeping bags and layered clothing.
Safety
Never use a gas, propane or kerosene heater, a camp stove or a charcoal grill indoors for warmth. They can produce carbon monoxide, which can kill.