Why Does My Charger Get So Hot. Theyre in so much use almost we use them 18 hours a day. However if the adapter is hot enough to hurt you after touching it for a few seconds there could be a serious issue.

What are the advantages of tyre inserts. A typical charger is actually a power converter or power supply. Sounds like the chargers in question here were defective or it could have been the device battery causing heat as its usually the batteries that overheat.
Even iphone charger can get hot when charging.
Although this is a rare occurrence an issue with your power outlet or the electrical loop may cause a heat-up of your device charger adapter. Due to the output current intensity and surrounding temperature. It may have expelled air threw the seals while it was hot. The Reason for Heating.

