In this guide
Yes, wireless charging is slower than wired charging. Wireless pads max out at around 15–25W, while wired USB-C fast charging can deliver 65–140W or more, meaning a full charge over cable is significantly faster in most cases.
- Phone is properly aligned on a Qi2 or 15W+ pad
- Your phone supports high-wattage wireless charging
- Case is thin and non-metallic
- Charger is in a cool, well-ventilated spot
- Phone is misaligned on the pad
- A thick or metal case blocks induction
- Heat buildup triggers automatic speed reduction
- Charger is a basic 5W pad with no fast-charge support
Why wireless charging is slower
Wired charging delivers power directly through a physical connection with very little energy lost in the process. USB-C cables paired with a compatible charger and phone can hit 65W, 100W, or even 140W using protocols like USB Power Delivery or proprietary fast-charge standards.
Wireless charging uses inductive coils to transfer power through the air, which is inherently less efficient. Even the best wireless standards — Qi2 and the newer Qi2.2 — top out at around 15–25W. Real-world efficiency for wireless sits around 60–70%, compared to 85–95% for a good wired connection. That gap translates directly into longer charge times. For a detailed comparison of charging methods, see EcoFlow’s wired vs wireless charging analysis.
Speed comparison by charging type
| Setup | Works? | Need | Note |
|---|---|---|---|
| USB-C wired fast charge | Yes | PD charger + cable | 65–140W possible |
| Qi2 wireless pad | Yes | Qi2 phone + pad | Up to 15W standard |
| Qi2.2 wireless | Yes | Qi2.2 device + pad | Up to 25W |
| Basic 5W wireless pad | Slow | Any Qi phone | Very slow, overnight only |
| Wireless with metal case | No | Remove case | Blocks induction entirely |
What slows wireless charging down further
- Misalignment: If the phone’s coil doesn’t sit directly over the pad’s coil, output drops sharply.
- Heat: Wireless charging generates more heat than wired. When a phone gets too warm, it throttles charging speed automatically to protect the battery.
- Thick or metal cases: These block or disrupt the magnetic field. Remove metal cases entirely for wireless to work.
- Low-output pads: Older or cheap Qi pads often cap at 5W regardless of what your phone supports.
When wireless charging makes sense
Wireless charging is genuinely useful for overnight top-ups, desk charging mats, and in-car mounts where you want to set a phone down without fumbling with a cable. The convenience trade-off is real — you just shouldn’t rely on it when you need a fast charge in 20–30 minutes.
If your device also handles video output, it’s worth checking whether your USB-C port supports video since multi-function ports sometimes affect charging behavior. And if you’re troubleshooting other cable issues, our guide on why USB-C to HDMI stops working covers related connector problems.
Bottom line: Wireless charging is slower than wired in every practical scenario. If speed matters, plug in. If convenience matters more than time, a Qi2 pad is a solid choice — just don’t expect wired speeds from it.