Why do phone chargers heat up when charging? And is it dangerous? (Page 2 ) | April 25, 2025

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Plug the charger into the socket – Source: spm

Even though it’s extremely rare, it can’t be completely ruled out that lithium-ion batteries used in smartphones and laptops can create sparks and potentially cause a fire. Therefore, it’s always advisable not to leave a device unattended and not to charge it overnight, especially if the charger often tends to overheat.

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

How do I cool down my smartphone?

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

Remember: your mobile phone does not tolerate extreme temperatures, neither too hot nor too cold. It is equipped with a lithium-ion battery that works most efficiently at temperature fluctuations 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 phone cool:
Use less power: Usually, the smartphone heats up and loses battery power with prolonged use, so it is best to take breaks from time to time to maintain the ideal temperature and extend battery life.
Install cleaning software: Junk files clog up your phone and put extra strain on the processor, but also on the battery. Ideally, download a maintenance application specifically designed to clean up unnecessary files

ien. It will also be able to identify applications that consume a lot of battery. Remember: the more you clean your device, the more unnecessary content will be removed and the more you can improve its performance and thus extend the life of the battery.

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