Methodology

Identity

Every product is identified by its exact manufacturer SKU, never by its marketing name. Names collide across platforms; SKUs do not.

Evidence

Each published field is bound to a source document with a URL, a retrieval timestamp and a content hash. Manufacturer pages lead. Where we compute a value — watt-hours from amp-hours and voltage, for instance — it is labelled as our arithmetic rather than a manufacturer figure.

Compatibility has three axes

Physical fit, operation and recommendation are recorded separately, because a manufacturer statement that a pack fits says nothing about whether it is the right pack for the job.

Four answers, and what they mean

What blocks publication

The build refuses to publish a claim with missing evidence, an unreviewed record, a conditional answer with no structured condition, or a first-hand note with nothing behind it. These are build errors, not warnings.