The most expensive sourcing decision is usually the one that looked cheapest at the quotation stage. Five assumptions sit behind that pattern, and each of them survives because it is true often enough to be repeated, and wrong often enough to cost a programme its margin.
Charger sourcing: five assumptions, examined
Low unit price means low cost, a certificate proves a factory, samples predict production, the catalogue describes the platform and the supplier can scale with you.
Each assumption contains a true part, which is why it spreads. The cost comes from acting on the part that is not, and in most cases the evidence that disproves it was available before the order.
What follows is not an argument for paying more. It is an argument for pricing the same scope, which is the only way a lower number can be identified as genuinely lower.
Assumption 1: the lowest unit price is the lowest cost
Landed cost includes the lines the unit price leaves out.
Tooling, packaging setup, certification work, accessories, freight and the cost of the errors that follow a scope mismatch all belong in the comparison. Two quotations with a fifteen per cent difference in the unit price can reverse once the packaging version and the certification scope are aligned. The practical remedy is to ask for the five lines separately, in writing, before the price discussion begins.
Assumption 2: a certificate proves a factory
A certificate describes a system; the file describes the product.
An ISO certificate indicates that the factory documents its processes, and it says nothing about the platform, the limits or the revisions that apply to your product. The useful documents are the platform revision, the test records with their limits and the certification scope by market, because those describe what will be shipped rather than how the organisation is arranged.
Assumption 3: samples predict production
A sample proves the design; the pilot proves the process.
The sample is often built with extra attention, sometimes from stock components, and almost always as a one-off. What the production run depends on is the fixture, the limits and the component lots, none of which the sample exercises. A pilot order of a defined size verifies those elements, and it is the cheapest test of whether the supplier can repeat.
Assumption 4: the catalogue describes the platform
Catalogue entries are marketing artefacts with a date and a revision attached somewhere else.
Ask for the platform in production, its enclosure revision and its test limits. Where the catalogue entry is the only evidence, the platform may be a design, a previous customer’s order or a product the supplier is licensed to show but not to build for you. The revision question is the one that matters, because a platform changes quietly as components reach end of life.
Assumption 5: the supplier can scale when you do
Capacity is a schedule answer for the months you need.
A supplier that builds the pilot comfortably may have committed the same line to other customers for the quarter in which your volume arrives. Ask which line the product runs on, the shift pattern, the units per shift for this product and the months already committed, and record the answer with a date. That record is what makes a later capacity conversation factual rather than hopeful.
| Assumption | What is true | What is not | What it costs |
|---|---|---|---|
| Low price is low cost | Unit price is a real cost | It is not landed cost | A reversal once lines are aligned |
| A certificate proves a factory | It shows a documented system | It says nothing about your product | Discovering the platform gap late |
| Samples predict production | They prove the design works | They do not prove the process | A first batch that behaves differently |
| The catalogue is the platform | Products may exist | The revision is unknown | Building to a superseded design |
| Capacity scales with you | It may be available | It is not a commitment | A moved delivery date |
What to do instead, in one page
Five questions replace the five assumptions.
Which platform is running this month, with its revision; what the test limits are and where they came from; which certifications cover which markets and revisions; what the five cost lines are for this configuration; and which line and which months are committed for the volume. Each has a documentary answer, and asking them costs nothing but an email.
How these assumptions show up after the first order
Four symptoms, and each has a familiar explanation.
A first batch that measures differently from the sample, a packaging version that was not included in the price, a delivery date that moves without a production reason, and a certification file that names a revision the factory has since changed. None of the four is fraud; all four are the normal consequence of a quotation that was compared before the scopes were aligned.
FAQ
Is a higher unit price ever justified?
It is justified when it buys a defined scope: a certified platform that covers the markets, a documented process, retained records and capacity for the months you need. Comparing two prices before the scopes match is a comparison of two different products. A higher price is justified when it buys a certified platform that covers the markets, a documented process, retained records and capacity for the months you need.
How do we check a supplier’s capacity claim?
Ask which line, which shifts, how many units per shift for this product and which months are already committed, then confirm the answer during a pilot or a visit. A capacity claim without those four items is a description of a factory rather than of a schedule. Ask which line, which shifts, how many units per shift and which months are already committed, then confirm the answer during a pilot or a visit.
What is the cheapest way to de-risk the first order?
A pilot of a defined size with agreed acceptance criteria, run on the real line with the real fixtures and the real packaging. It costs less than a production batch and it tests the elements the sample cannot. A pilot of a defined size with agreed acceptance criteria, run on the real line with the real fixtures and packaging, costs less than a production batch.
Should we always ask for the five cost lines?
Yes, because it is the only way to see which supplier is including tooling, packaging setup or certification work. The lines can be added back together afterwards; they cannot be separated once a single figure has been negotiated. The lines can be added back together afterwards, but they cannot be separated once a single figure has been negotiated between two suppliers.
Next step
Send the configuration, the markets and the expected volume to Wecent Group through the contact page. The reply states the platform and revision, the limits behind the test, the certification scope, the five cost lines and the capacity position. Related reading: OEM and ODM charger manufacturing, charger manufacturing services and the factory floor. External references: IEC standards, ICC Incoterms rules, UL standards and certification, BSI ISO 9001 quality management, International Trade Centre Trade Map and Intertek testing services.
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