Typical wattage range
30-90 W. Use a measured average when the device matters.
Work
Laptop Runtime Estimate
Laptop draw depends on charger rating, battery state, screen brightness, CPU/GPU load, and whether charging over USB-C DC.
Planning default
60 W at 100% duty cycle.
Confidence label
estimated. Treat the result as a planning estimate, not a lab measurement.
How to use this scenario
- Start with 60 W if you do not have a watt-meter reading yet.
- Laptop is treated as a continuous load, so runtime is sensitive to the real wattage you enter.
- Keep at least a planning reserve because battery age, temperature, output path, and device settings can move the result.
Watch-outs
- The scenario wattage is an estimate. Measure the real load before relying on it for outage, travel, or critical planning.
Sources
- Anker laptop wattage guide (editorial) - Lists typical plugged-in laptop power draw around 30-90 W, with higher draw under heavy workload or charging.
- U.S. Department of Energy appliance energy estimation guide (official) - Explains how to calculate energy use from wattage, hours, and nameplate current.