1. The resistance of the charging line is large. According to the heating formula of the conductor, the heat output is equal to the current squared times the time multiplied by the resistance. It can be seen that the greater the resistance is, the greater the heat output is when the charging current is consistent.
2. When using fast charging, the heat generated by the increase of current also increases, for example, if the heat generated by 1A current charging is compared to 1, the heat generated by 2A charging is four times that of 1A.
3. The charger heating leads to heat conduction to the wire, the charger is charged when there is a certain conversion rate, the general conversion rate is about 80%, the rest of the energy in the form of heat divergence, and the copper wire in the charging line is a good conductor of heat leading to the charging line is also hot
Said clearly charging often too long, so it will be hot is not the original regular charging line, the original charging line qualified, charging will not be hot. When charging the phone, you should use the charging cable equipped with the original charger, which can ensure the output current is stable and protect the battery. The original charger will heat up, but not overheat, and has protection. If the charger overheats, it is fake or not original.
It took too long. The line was hot.
While charging while playing with the phone, too much power will cause the charging cable to be hot