Wireless charging is demonstrably slower than charging via a cable. A significant portion of the power is lost during the transfer.
Wireless charging suffers from inefficiency, primarily due to energy loss during transmission.
Wireless Charging Efficiency Explained
The inefficiency of wireless charging stems from the energy lost during the transfer of power from the charging pad to your device. According to reference information, wireless charging is approximately 70% efficient. This means about 30% of the power is lost in the process.
- Power Loss: About 30% of the electricity doesn't make it to your phone.
- Heat Generation: This lost power is largely converted into heat. This explains why your phone gets warm, or even hot, during wireless charging.
Why is it Slower?
The following table summarizes the key difference between wired and wireless charging:
| Feature | Wired Charging | Wireless Charging |
|---|---|---|
| Efficiency | Higher | Lower |
| Power Loss | Minimal | Significant (around 30%) |
| Charging Speed | Faster | Slower |
| Heat Generation | Less | More |
Practical Implications and Solutions
- Charging Time: Expect wireless charging to take considerably longer than wired charging.
- Heat Management: Avoid placing your phone on heat-sensitive surfaces while wirelessly charging.
- Consider Wired Charging: If you need a quick charge, always opt for a wired connection.
