WattWise — Your Pro Power Runtime Estimator

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Battery Station
- Select your power station or enter a custom capacity.
- Open the Appliances panel and add what you plan to run.
- Use the +/− controls to set quantities per appliance.
- Optionally enable Solar Input and enter your panel details to see how solar reduces battery draw.
- Your estimated runtime until battery depletion updates in real time at the top.
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Fuel Generator
- Select your generator size from the preset list.
- Enter the fuel tank capacity.
- Adjust the fuel burn rate if it differs from the preset default.
- Open the Appliances panel to track load against rated capacity. Use the +/− controls to set quantities per appliance.
- Your estimated runtime appears instantly at the top.
💡 Tip: Petrol generators burn near-rated fuel at any load. Running at low load wastes fuel — aim to fill your rated capacity with appliances for the best cost-per-kWh.
Estimated Runtime
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Add appliances below to calculate runtime
🔋 Battery Settings
Wh
500 W
%
Estimates only. Actual runtime varies with load, temperature, and equipment condition. Settings and Custom Appliances are saved in your browser.