Black Friday 2026 is coming — the portable power deals hub and the 2026 Stout List gift guide are live.

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Learn: The Math, the Tools, the Method

Everything on Stout Outdoors runs on a small set of ideas: size things with arithmetic, compare on specs, maintain what we publish. This section holds the tools and explainers — and the methodology page that shows exactly how recommendations get made.

The one piece of math this whole site runs on

Watts are speed; watt-hours are distance. A watt is a rate — how fast energy moves right now. A watt-hour is an amount — one watt sustained for one hour. A power station's output rating (watts) tells you what it can start and run at the same moment; its capacity (watt-hours) tells you for how long.

A home refrigerator draws roughly 150 watts while its compressor runs, and the compressor runs about a third of the time: 150 W × 8 effective hours ≈ 1,200 Wh per day. That's why a "2,000" station (2,000Wh, before losses) runs a fridge for about a day and a half — and why a station advertised by its 3,000W output can still be empty by morning if its capacity is small. Both numbers, every time. Any seller who quotes only one of them is hoping you won't ask about the other.

The same discipline shows up everywhere here: cooler capacity in usable quarts after ice, sonar screens measured in real diagonal inches, satellite plans priced over three years of ownership instead of at the register. It's slower than a star rating. It's also the whole point.

How this page was built: Every explainer on this page is checked against primary sources where they exist — manufacturer documentation, standards bodies, and agency planning figures — and the pages say which is which. Full methodology on the How We Choose page.