WattNook / workday brief

Plan for the devices you need online.

Adjust the sample loads, battery assumptions, and workday target. WattNook calculations show planning estimates from the values here; they are not measured product-test results.

Your workday load

Sample setup: laptop + Wi-Fi router + ONT for an 8-hour workday. Device wattages and usable efficiency are planning estimates, not measurements. Adjust every value to match your setup.

Active devices

Wattage inputs are estimates.

82 W total

LaptopEstimate in watts

Wi-Fi routerEstimate in watts

Optical network terminal (ONT)Estimate in watts

MonitorEstimate in wattsInclude optional load

LED lightEstimate in wattsInclude optional load

Battery assumptions

Estimates for planning; actual usable energy varies by product and conditions.

Comparison battery capacity

Sample: 1,000 Wh

Estimated usable efficiency

Sample estimate: 85%

Target workday

hours

Sample: 8 hours

Estimated runtime

10.4 hours

Target covered

Active load: 82 W
Assumed usable energy: 850 Wh
Energy shortfall: 0 Wh

Showing recommendations for the sample setup.

Based on your current calculator setup

Compare backup power for your workday

Estimates use the stated loads and efficiency. Manufacturer nameplate capacity is not tested usable energy; fit labels do not guarantee compatibility or continued internet service.

Modeled capacity requirement

772 Wh minimum

ceil((82 W × 8 h) ÷ (85% ÷ 100)); a planning model, not measured usable capacity.

Cushion reference: 900–1,100 Wh (20–40% above the modeled minimum). This is not a safety rating.

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