Why do phone chargers heat up while charging? And is it dangerous?

Can it start a fire?

Although extremely rare, it cannot be completely ruled out that lithium-ion batteries used in smartphones and laptops can generate sparks and cause a possible fire, so it is always advisable not to leave a device unattended and avoid charging it overnight, especially if the charger is often prone to overheating.

In most cases, a hot charger is nothing to worry about. But if it displays excessive or unusual heat, a strange smell, suspicious discoloration, or a frayed cable, it would be much smarter to stop using it immediately. It is best to replace it as soon as possible.

How to cool down your smartphone?
To cool down an overheated cell phone, you must first remove the case to release the heat. Next, activate airplane mode for a few minutes to disable battery-draining features such as Bluetooth or apps running in the background. Then, place the smartphone in a cool, shaded place. A fan can also help cool it down quickly.

Remember: your mobile does not tolerate extreme temperatures, whether too hot or too cold. It is equipped with a lithium-ion battery that works most efficiently at a temperature fluctuating between 10 and 25 °C. A higher or lower range can affect the hardware and even the performance of the device.

Here are some tips to keep your cell phone cool:
Use less power: Normally, the smartphone heats up and loses battery power when used for a long time. Therefore, it would be best to take breaks from time to time to maintain an ideal temperature and preserve battery life.
Install cleaning software: Junk files choke your phone and add extra work to the processor, but also to the battery. The ideal is to download a maintenance application specially dedicated to cleaning unnecessary files. It will also be able to identify applications that consume a lot of battery. Remember that the more you clean your device, the more you will remove unnecessary content, and the more you will be able to improve its performance and thus extend the life of the battery.
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