Typical wattage range
8-25 W. Use a measured average when the device matters.
Internet
Modem or fiber ONT Runtime Estimate
For home internet backup, include modem or ONT, router, and any mesh nodes as separate loads.
Planning default
12 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 12 W if you do not have a watt-meter reading yet.
- Modem or fiber ONT 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
- U.S. Department of Energy appliance energy estimation guide (official) - Explains how to calculate energy use from wattage, hours, and nameplate current.