About Benchwatt
An independent spec bench for portable power. We compare published specs and do the math.
Updated
Who we are
Benchwatt is a small, independent comparison site for people shopping for a portable power station, a solar generator kit or a solar panel in the US. We're not owned by, or paid by, any of the brands we list.
What we do, and what we don't
The name says “bench”, so let's be precise: our bench is a spec bench. We have not tested these units. We read the published specs of each model, line them up in the same format and do the math a buyer would do with a calculator.
- Specs: capacity (Wh), rated continuous output (W), surge, battery chemistry, weight, solar input and any bundled panel, as the maker's listing states them. When a listing doesn't state a number, we show a dash instead of guessing.
- Math: Wh per pound (capacity ÷ weight) and runtime = capacity × 0.85 ÷ device watts. The 85% covers inverter losses; it's an estimate, and real results vary with load and temperature.
- Popularity: we order models by how popular they are on Amazon US. Our “best” picks use that order inside a size class, and each pick shows its rule.
- Superlatives: only when the number on the page proves it, e.g. “highest Wh per pound in this list”.
Today the catalog has 506 models; specs were last checked on November 12, 2026. Guides recompute their numbers from the catalog every time they load, so a new spec changes the guide too.
What we don't show
No prices, no star ratings, no review quotes and no price tracking. Prices change by the hour and belong to the store; you'll see the current one on Amazon. We earn a commission on qualifying purchases; see our disclosure.
Found a wrong number?
Spec sheets change and listings contain errors. If a number on Benchwatt doesn't match the maker's documentation, tell us and we'll check it.