Free run-time tool
Power Station Run-Time Calculator
The watt-hour number on the box never tells the whole story. This tool takes your battery size, the gear you actually plan to run, and real-world inverter losses, then tells you how many hours you will get. No formulas needed.
Step 1: How big is the battery?
Pick a common size or type the exact watt-hours from the spec sheet.
Step 2: What are you running?
Tap everything that will be on at the same time. Numbers are realistic average draws, not nameplate maximums.