How we verify specs — not a pretend lab

What “test” means here

For each portable power station we track, we read the manufacturer’s own product page (and Amazon listing when that is the primary source), transcribe rated capacity, continuous AC output, weight, chemistry, recharge, and related fields into a normalized schema, and refuse to invent missing cells. Dataset last verified: October 29, 2026.

Data sources

• Manufacturer product pages and official PDF/spec sheets when linked.
• Amazon detail pages for ASIN-keyed SKUs and list-price snapshots.
• Vendor-published owner review aggregates and quotes, attributed and never paraphrased into fake stars.
• Standards references on methodology (e.g. IEC 62619, UL 2743, CPSC recall searches) — cited as external authorities, not as claims that we ran those tests ourselves.

Verification process

1. Ingest listing fields into Hub with provenance quotes where available.
2. Normalize units (Wh, W, lb, months) so models are comparable.
3. Leave blanks blank — no imputation of capacity, output, or ratings.
4. Publish; corrections update the dataset and re-ship on the next deploy.

Tools we run

The Power Fit runtime calculator applies a published usable-Wh derate and load estimate so readers can size a station for a fridge, CPAP, or kit. That is arithmetic on manufacturer capacity — not a bench measurement of every unit.

What we will not claim

• Instrumented runtime charts for every SKU we have not measured.
• Borrowed AggregateRating stars presented as WattPicks lab scores.
• Whole-home coverage from a portable station without transfer-switch caveats.

Full field list

The complete tracked-field list, rated-vs-usable rules, and refusal list live on Methodology. Editorial independence and correction path: Editorial policy.