The medical charger factory check turns a visit into an audit, and this ranking is built around the five checks that matter most for an OEM buyer: test equipment and calibration, the production flow, document and change control, communication and records. Each check ranks because it verifies a different layer of the factory — the instruments prove the tests are real, the flow proves the tests are placed where they matter, the documents prove the evidence survives, and the communication proves the relationship works under pressure. The ranking is a verification order, and running the five checks fairly keeps the comparison defensible.
Key takeaways
- Five factory checks turn a medical OEM visit into an audit: equipment, flow, documents, communication and records.
- The production flow is verified in practice, not from the brochure; calibrated equipment is the evidence.
- Medical programs follow industry power-supply knowledge, and standards applicability is confirmed by the buyer's QA or regulatory team.
Content updated: August 2026 — confirm current factory processes and test flows before committing.
Five factory checks turn a medical OEM visit into an audit
A factory visit is only as good as its checklist. The five checks below are ordered by what they verify: test equipment proves the tests are real, the production flow proves the tests are placed where they catch faults, document and change control proves the evidence survives, communication proves the relationship and the records close the loop. A buyer who runs the five in order gets an audit; one who takes the tour gets impressions.
| Rank | Factory check | What it verifies |
|---|---|---|
| 1 | Test equipment and calibration | The tests are real |
| 2 | Production flow | The tests sit where they catch faults |
| 3 | Document and change control | The evidence survives |
| 4 | Communication under questions | The relationship works under pressure |
| 5 | Records and batch alignment | The loop is closed |
Test equipment and calibration are the first check to verify
The first check is the test equipment itself: which instruments run which tests, when they were calibrated and what the calibration records show. Equipment that is calibrated, dated and matched to the products being tested is evidence of a working system; equipment that is described but not shown is not. The ranking puts this first because every other claim in the factory file depends on instruments that measure correctly.
| Rank | What to verify in the equipment | Why it ranks first |
|---|---|---|
| 1 | Instruments matched to the products | The tests measure the right things |
| 2 | Calibration records with dates | The measurements are trustworthy |
| 3 | Equipment shown, not just described | The system is visible |
The production flow is the second check that shows where testing sits
The second check is the production flow: where testing sits in the line and what it covers. The ranking puts this second because test position decides the failure economics — electrical testing before aging catches faults early, aging before final inspection exercises the unit before it ships, and a fault caught at final inspection costs a delay. The flow that places testing inside the line outranks one that tests after assembly.
| Rank | What to verify in the flow | Why it ranks there |
|---|---|---|
| 1 | Tests placed inside the line | Faults are caught early and cheaply |
| 2 | Every-unit tests versus sample tests | The coverage is explicit |
| 3 | The aging protocol and its duration | The unit is exercised before it ships |
Document and change control are the third check that survives the visit
The third check is document and change control: versioned certificates, batch records and change logs for every configuration. The ranking puts this third because the visit is a moment and the documents are the memory — a factory that maintains the file is running a program, and one that produces documents on request is not. The change log is the test: how a recent change was documented and re-approved shows whether the process is real.
| Rank | What to verify in the documents | Why it ranks there |
|---|---|---|
| 1 | Certificate-to-configuration match | The fastest single evidence check |
| 2 | Versioned change log | Changes are documented events |
| 3 | Records that name the exact configuration | The evidence is specific |
Communication and records close the fourth and fifth checks
The fourth check is communication: how the factory answers technical questions, how long the answers take and whether promises materialize. The ranking puts this next because the evaluation Q&A previews the production relationship — vague answers before the order predict vague answers after it. The fifth check is the records loop: batch records, inspection results and the receipt-check alignment that keep reorders inside the evidence chain.
| Rank | What to verify in communication and records | Why it ranks there |
|---|---|---|
| 1 | Written Q&A with response times | The relationship is previewed |
| 2 | Batch records per shipment | Each order carries its own evidence |
| 3 | Receipt-check alignment | The shipment matches the approved sample |
Running the five checks fairly keeps the comparison defensible
The five checks are run against the same standard for every candidate: one score per check, the evidence attached to each score, and the same person scoring every factory — or criteria precise enough that two scorers reach the same number. The scored file is the deliverable, and it is dated and re-run at the reorder. A factory that passed in March should still pass in October, with the evidence to prove it.
The checks also work remotely. A detailed remote audit covers the same five layers with documents and live sessions: the equipment list with calibration records, the production flow described with the test points, the document and change files shared under NDA, the Q&A run in writing and the batch records sampled at random. The remote audit is not a substitute for the visit when the program is large or healthcare-adjacent, but it is a strong first pass that makes the visit shorter and sharper — the visit then verifies what the documents claim rather than discovering it. The same five checks are the checklist for both, and the record is the evidence either way.
The reorder re-runs the same checks at a lighter weight. The equipment calibration is re-confirmed with current dates, the flow is re-confirmed against the batch records, the document and change files are re-checked for new entries and the communication record is reviewed against the last order. The five checks become a standing review rather than a one-time audit, and the factory that passes at the first visit and still passes at the third reorder is the factory the program can trust. The checks are a discipline, not an event.
The red flags also belong on the checklist. Equipment that is described but never shown, a production flow that tests after assembly, documents produced on request with the model number blurred, and answers that disappear under deadline pressure — each one is a failed row on the same scorecard. The buyer who runs the five checks against every candidate catches the flags early, and the scored file is the record that makes the comparison fair.
The five checks also fit a budget. Most of them cost nothing beyond reading — the calibration records, the flow description and the document files are checked on paper — and the ones that cost time, the session and the Q&A, pay for themselves by catching the gap before the order. The factory audit is the cheapest insurance a medical OEM program can buy, and the checklist is what keeps it fast.
The five checks in this ranking are the complete audit set for a medical charger factory. A buyer who runs them at the first visit and re-runs them at the reorder has made the factory decision a standing one.
The evaluation standard is the same one used across the medical cluster: WECENT's Factory page describes the manufacturing and quality context, the Quality Control page documents the production test flow and records, and the WEP Series GaN Chargers are the fixed-plug platform for single-region medical-adjacent lines. To run the five checks against a candidate factory, request the evidence set from WECENT's project engineering team — the review returns the test flow, the calibration records and the batch record approach against which the candidate is scored.
Frequently Asked Questions
What is the most reliable signal in a factory audit?
Document discipline. A factory that maintains versioned certificates, batch records and change logs for every configuration is running a program; one that produces documents on request is not.
When does a remote audit replace a factory visit?
For the first pass, a detailed remote audit covers the equipment, the flow and the documents. For a healthcare-adjacent or high-volume program, the visit then verifies what the documents claim rather than discovering it.
How do I verify test equipment?
Ask which instruments run which tests, when they were calibrated and what the calibration records show. Shown equipment with dated records is the evidence.
What is the aging test and why does it matter?
The aging test runs units for a defined period to catch early failures. Its position in the flow — before final inspection — decides how early faults are caught.
How do I score two factories fairly?
Run the same five checks against both, with one score per check and the evidence attached. The same person or the same precise criteria keeps the comparison fair.
What documents should I request before a factory audit?
The certificate and test report naming the exact configuration, the production test flow, the calibration records and a sample batch record — the file the audit checks against.