⚡ Interactive Engineering Utility

Portable Power Station Runtime & Load Calculator

Standard calculators divide Battery Watt-hours by Appliance Watts and overestimate runtime by 25% to 45%. This tool applies our real-world field formula: factoring in AC vs. DC conversion efficiency, continuous inverter parasitic idle draw (15W–22W/hr), and compressor/pump duty cycles.

1. Select an Appliance Preset (Or Enter Custom Specs Below):

Battery Capacity (Wh)

Appliance Running Watts

Hourly Duty Cycle (%)

Inverter Idle Draw (W)

Output Mode Efficiency

Usable Battery Energy 870 Wh

Combined Hourly Burn Rate 718.0 Wh / hr

Verified Real-World Runtime 1.21 Hours

Runtime Across Standard Power Station Sizes (For This Exact Load)

Power Station Class	Rated Capacity	Usable Energy	Estimated Runtime	8-Hour Nights / Days