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Wi-Fi router Runtime Estimate

Router wattage is usually steady, but modem, ONT, and mesh nodes should be counted as separate loads.

Use this load in the runtime calculator

Typical wattage range

8-20 W. Use a measured average when the device matters.

Planning default

12 W at 100% duty cycle, or about 12 W average load.

Confidence label

Estimated. Treat the result as a planning estimate, not a lab measurement.

1,024 Wh example

With 88% efficiency and a 10% reserve, about 811 Wh remains usable. At the default load, that is roughly 2d 19h.

Evidence behind these load values

The value class and conditions stay separate from the number. Missing source details remain unknown rather than becoming assumptions.

Evidence type
Source-reported range · Editorial planning default
Source type
Editorial · Official
Confidence
Estimated
Conditions
Router wattage is usually steady, but modem, ONT, and mesh nodes should be counted as separate loads.
Swipe table sideways
Evidence behind these load values
ValueEvidence typeConditionsSource and datesConfidence
Typical wattage range8-20 WSource-reported range
  • Operating state: Steady
  • Output path: AC
  • Measurement interval: Unknown
EnergySage Wi-Fi router wattage guideSource date: UnknownChecked:
estimated
Planning default12 WEditorial planning default
  • Operating state: Steady
  • Output path: AC
  • Measurement interval: Unknown
EnergySage Wi-Fi router wattage guideSource date: UnknownChecked:
estimated
Duty cycle100%Editorial planning default
  • Operating state: Steady
  • Output path: AC
  • Measurement interval: Unknown
No separately attributed sourceSource date: UnknownChecked:
estimated

Device measurement guide

Use the measured average

Enter a steady watt reading or a full-cycle average in the runtime calculator. Use 100% duty cycle for an average that already includes on and off periods.

Device wattage (W)
Read watts after a steady load settles; record energy over time for a cycling load.
Duty cycle (%)
Average watts calculated from Wh divided by hours already include off-cycle time, so do not apply duty cycle again.

How to Measure Device Watts for Runtime Planning

Use this load in the runtime calculator

Verify your watts

  • Check the device label for running watts or input amps and volts.
  • Use a plug-in watt meter for AC loads when the result matters.
  • For cycling loads, measure long enough to capture on/off behavior.

Open wattage library

Check output path

  • AC inverter loads usually lose more energy than direct DC loads.
  • Keep reserve for cold weather, battery age, and load changes.
  • Do not treat label capacity as fully usable watt-hours.

Read the method

How to use this scenario

  • Start with 12 W if you do not have a watt-meter reading yet.
  • Wi-Fi router 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

Use this load in the runtime calculatorCheck source wattage rangesFind a practical power station sizeCompare runtime by battery capacity

Runtime on Real Stations

These station-specific pages reuse this scenario's wattage assumptions with source-linked model specs. They are estimates, not measured runtimes.

Related Scenarios

Compare nearby loads before assuming one wattage profile covers your setup.