About 8.5 hours. A 500 Wh power station has roughly 425 Wh usable, and an electric blanket averages about 50 W because the compressor cycles on and off. Depending on the model the range is about 5.7 to 17 hours.
- Runtime
- 8.5 hEstimate at average draw
- Usable energy
- 425 Wh85% of 500 Wh
- Average draw
- 50 W100 W while running
- Surge
- NoneNo motor start
The math
| Usable capacity | 500 Wh × 0.85 = 425 Wh |
|---|---|
| Average draw | 100 W running × 0.5 duty = 50 W |
| Runtime | 425 ÷ 50 = 8.5 h |
Other battery sizes
Questions people ask
How long will a 500 Wh power station run an electric blanket?
About 8.5 hours (about 8.5 hours). A 500 Wh power station has roughly 425 Wh usable, and an electric blanket averages about 50 W because the compressor cycles on and off. Depending on the model the range is about 5.7 to 17 hours.
How many watts does an electric blanket use?
An electric blanket typically uses about 100 watts on high, roughly 50-150 W depending on size and setting. It is a resistive load with no startup surge.
How do you calculate power station runtime?
Hours ≈ capacity in Wh × 0.85 ÷ average watts. The 0.85 allows for inverter and battery losses.