Observed arrival · 2026-11-15
Power Station Runtime Calculator
A free, no-sign-up calculator estimates how long selected appliances can run from a power station, using device loads and battery capacity as inputs.
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- Outage planners, campers, and van lifers
- Worth noticing
- It models refrigerator compressor duty cycles and flags startup surges of 2–7× running wattage against inverter output.
Field notes
The calculator asks for battery capacity in watt-hours, desired runtime, maximum AC output, and device loads; users can set each device’s wattage and duty cycle. Its stated formula totals the average load and divides battery capacity adjusted for inverter efficiency by that load. It also describes motor start-up draws of 2–7 times running wattage and cautions that cold, battery age, and appliance behavior can change results.
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