01 / Your energy reserve
Enter the watt-hours printed on your battery or power station. Make sure your inputs reflect the setup you actually own.
Example capacities
02 / Your devices
For every device, enter its typical watts and estimated hours of use per day. Compressor appliances cycle on and off, so their daily hours are only estimates.
DeviceWh/dayQty
Planning estimate only, not an electrical safety assessment. Capacity may be less than the label due to age, temperature and discharge rate. AC surge demand, battery management cutoffs, inverter limits and device startup loads can cause early shutdown. Never operate fuel generators indoors or in enclosed spaces.
03 / Your power forecast
The estimate updates whenever you change a device or battery setting.
Estimated autonomy at planned daily use
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Add your devices to begin.
–Usable energy (Wh)
–Daily energy demand (Wh/day)
–Combined rated draw (W)
–24h continuous-load runtime
Formula: nominal Wh × (1 − reserve %) × efficiency ÷ Σ(device watts × hours/day × quantity). Runtime assumes a repeating daily usage pattern. A result above 1 day does not mean your equipment can handle the instant power draw.
Your plan stays in this browser using local storage when available. We do not upload your device list or calculations to a server.