1. Verify fields
Manufacturer specifications support voltage, chemistry, CCA, functions and proof output. Third-party evidence, when cited, supports only the claim it actually documents; it is not our own test result.
How we verify and match
Published specifications, source confidence and fit logic stay separate. These are compatibility guides, not our own hands-on test reports.
2. Apply hard gates
Site decision logic checks requirements against the verified frozen dataset. Safety-critical requirements never auto-relax. Battery voltage and vehicle-system voltage remain separate.
3. Explain the fit
Ranking prefers the required job and identifies unnecessary cost. Affiliate payout is not an input. A fit recommendation is an interpretation of verified capabilities, not a measured performance rating.