Short answer: if a USB-C PD charger does not fast charge a laptop, the problem may be the charger protocol, cable rating, port power split or packaging claim. Importers should test complete charging sets, not charger units alone.
The buyer fear moment: "The box says 140W, but my customer gets 65W"
This complaint is common when customers use the wrong cable, the wrong port, or all ports at once. But if packaging does not explain power split clearly, the importer still gets the return.
Importer test checklist
| Issue | Test | Buyer action |
|---|---|---|
| Wrong wattage | PD protocol analyzer test | Record PDO output by port |
| Cable limits speed | Test with 60W, 100W and 240W cables | Bundle correct cable |
| Multi-port confusion | Power split test with 2-6 devices | Print output table on package |
| Heat under laptop load | Temperature rise and burn-in test | Check stability after hours |
| Compatibility complaint | Test common laptop models | List compatible use cases honestly |
Best packaging fix
Put a power split table where customers can see it. For example: USB-C1 alone up to 140W; C1+C2 split according to mode; all ports shared. Clear packaging can reduce returns even before customer support starts.
Doolike supplies USB-C chargers and GaN desktop charging stations for importers. Use the GaN charger sourcing checklist before approving bulk orders.
FAQ
Why does a PD charger not fast charge a laptop?
Possible causes include cable limitation, laptop protocol, wrong USB-C port, multi-port power split or inaccurate product claims.
Should importers test chargers with cables?
Yes. Customers use charger and cable together, so the bundle must be tested together.
Can Doolike support OEM output tables?
Yes. Packaging can include custom power split tables, logo, plug type and buyer-specific instructions.
