When a laptop charges slowly while in use, the cause is almost always one of a handful of things — most fixable without buying new hardware.
- Heavy CPU/GPU load can draw more power than the charger supplies, so the battery makes up the difference
- Check whether the charger meets the laptop’s rated wattage, not just any USB-C PD charger
- Some laptops throttle charging speed above a certain battery percentage by design
If none of these resolve it, the fault is more likely in the device’s charging circuitry or battery health than in the charger itself — especially if the same charger works fine on a different device.
Quick check
Before replacing any hardware, test with a different cable and a different outlet — this isolates roughly 80% of charging complaints to a single faulty component.