Laboratory accreditation and charger reports · 01
CNAS on a charger test report: check the laboratory’s scope, not just the logo
Match a charger report to the accredited laboratory, testing site and exact methods; separate report authenticity, out-of-scope results and destination-market acceptance.
Reader overview
Laboratory accreditation recognises competence for defined activities, rather than approving a charger. A CNAS-marked report may include clearly identified out-of-scope results; its authenticity is a separate question for the issuing laboratory [1][2]. Buyers need to match the laboratory, site and test methods to the applicable scope before relying on the report. ZIMONAI’s editorial view is to review accreditation coverage and sample-to-product identity as two separate links: a sound laboratory record does not establish that the quoted adapter is the tested configuration.
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ISO/IEC 17025 concerns laboratory competence; an accreditation scope defines which methods and activities are covered [7].
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A logo on the cover does not turn every result in a mixed report into an accredited result [2].
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Use the CNAS directory to check the laboratory; ask the issuing laboratory itself to confirm the report [1].
Start with the laboratory, location and exact test
NATA explains that laboratories offering similar services can hold different accreditation scopes, including different methods for a related test. ISO/IEC 17025 accreditation therefore needs to be read alongside the scope, not as a blanket promise covering everything a laboratory offers [4][7].
For a Chinese laboratory claiming CNAS accreditation, follow the official online-services page to the testing and calibration laboratory directory [3]. Compare the report’s institution name and accreditation number with the record, then examine the applicable scope and testing location. A group brand or a certificate for another branch is not the same match.
ZIMONAI recommends a short matching record: report number and issue date; laboratory and site; sample model; each relevant test or parameter; method, edition and any scope restrictions. Where the report predates the current scope, request evidence of coverage at the time of testing and issue. An unavailable historical record is an unresolved point, not proof of misconduct.
Read the results and footnotes, not only the cover
CNAS-R01 requires reports to distinguish non-accredited items and externally provided results, and prevents a multi-site claim from implying coverage at an unaccredited location. That makes the qualifications beside a result important, even when the cover carries the CNAS symbol [2].
A procurement review should identify who performed each required test, whether its accreditation coverage is supported and whether a later supplement replaces a result. NATA’s report guidance separately explains identification of subcontracted results and amendments; those are NATA requirements, not a substitute for the CNAS rules governing a Chinese report [5].
For a charger or power adapter, reconcile the tested model and sample photographs with the quoted configuration. Ask how differences in plug, enclosure, output modes or components were assessed; do not infer equivalence from wattage or exterior appearance. These are buyer evidence checks, not a claim that every difference necessarily requires retesting.
Keep authenticity and market acceptance as separate decisions
CNAS’s July 2026 FAQ draws a useful distinction: its public information can establish whether the institution is accredited, while the issuing laboratory should be contacted to verify a particular report [1]. Use contact details reached independently through the institution’s official channel, provide the complete report number and ask about issue date, amendments and sample identity. A QR code supplied in a sales message is not independent confirmation.
ILAC’s signatory search identifies accreditation bodies, their recognised activity types and links to accredited facilities [6]. This helps locate the appropriate accreditation record; it is not a directory of approved charger models. Before commissioning or accepting testing, establish the destination scheme’s laboratory, standard and submission requirements with the recipient or competent authority.
ZIMONAI’s assessment is to keep three outcomes distinct: supported laboratory coverage, an authentic report for the identified sample, and acceptance for the intended use. Record which is established and which still needs evidence. A passed sample test is also different from proof that subsequent production batches remain identical.
Buyer review checklist
Buyer review checklist
- Obtain the complete report, including sample identification, results, notes and supplements—not only a cover screenshot.
- Match the laboratory name, accreditation number and testing site through the official directory.
- Identify the relevant scope entry, method edition, restrictions and coverage at the report’s date.
- Separate out-of-scope items and externally provided results; resolve the coverage of each required test.
- Confirm the report with the issuing laboratory through an independently located official channel.
- Connect the sample to the quoted model and configuration, then separately establish destination-market acceptance.
Sources and evidence
Sources and evidence
Facts in this note were checked against the following primary and independent sources. Links open the source publisher’s website.
- 01China National Accreditation Service for Conformity AssessmentVerifying a report bearing the CNAS mark — official FAQ, 27 July 2026
- 02China National Accreditation Service for Conformity AssessmentCNAS-R01:2023 — use of accreditation symbols and claims, sections 5.1 and 5.3
- 03China National Accreditation Service for Conformity AssessmentOnline services — official testing and calibration laboratory directory entry point
- 04National Association of Testing Authorities, AustraliaChoosing the right lab — why the exact scope and test method matter
- 05National Association of Testing Authorities, AustraliaNATA test reports explained — subcontracted results and report amendments
- 06International Laboratory Accreditation CooperationILAC MRA signatory search — accreditation bodies and accredited facilities
- 07National Association of Testing Authorities, AustraliaISO/IEC 17025 testing and calibration — competence for methods in the scope