Wireless chargers use radio waves to transmit. Radio waves are not only electromagnetic waves, they can also transmit energy and penetrate the air, making wireless power transmission possible.

Why does the wireless charger fail to charge?

1. Does the phone model support wireless charging OR does the wireless charger match?

Sometimes the wireless charger does not respond when you put it on. First of all, it depends on whether the phone model supports it, and whether you need to install a wireless charging coil.

a. The built-in wireless charging receiver of the mobile phone: it can be charged directly on the wireless charger.

b. The wireless charging receiver contacts are reserved inside the mobile phone: it is necessary to install a wireless charging receiving coil to realize wireless charging.

c. The mobile phone itself does not support wireless charging at all, and a wireless charging receiver needs to be installed to realize wireless charging.

2. Whether the wireless charger indicator is normal

Secondly, there are LED lights around some brands of wireless chargers. When the mobile phone is placed on the wireless charger for charging, the LED lights around the wireless charger will light up, or there may be a beep to show the usage status. Sometimes the response is slow, and it takes a few seconds to recharge after putting it on, and sometimes it has to be replayed.

3. External factors affecting wireless chargers such as mobile phone protective shells

Then, please check whether the center of the back of the mobile phone is placed at the center of the wireless charging pad. If there are any inclusions between the mobile phone and the wireless charging pad, it may not be able to charge normally; then check the rear case of the mobile phone. Thickness may hinder wireless charging. It is recommended to remove the phone case and try charging again.

4. Conditions that the wireless charger needs to meet for normal operation

Finally, the transmitter power of the wireless charger may also cause the wireless charging not to be used. The short-circuit current output by the receiver can reach 1A, which is actually only about 0.3 during charging. The voltage drops directly to 3.9V when the phone is plugged in. This voltage does not reach the rated voltage for charging the phone at all, and the maximum work of the wireless transmitter The current is only 600ma, and smart phone charging needs 700ma~800ma or more, so if the transmission power of the wireless charger is too small, it will also make it impossible to charge.