There may be several reasons why Bluetooth headphones get hot when charged.
First of all, during the charging process, the battery will be charge-discharge conversion, resulting in energy loss and inevitable heat generation.
Second, prolonged use and frequent charging may cause the battery to age and increase the internal resistance of the battery, which in turn generates heat.
In addition, using the wrong charger may also lead to overcharging or too much current, making the headset hot. Therefore, in order to avoid overheating during the charging process of the Bluetooth headset, it is recommended to use the original charger, avoid frequent charging and long-term use, and pay attention to the surface heat dissipation of the headset.