Your wall adapter doesnt stop sending power. It is the chip in the device that stops accepting it. That is what people are referring to. If the charging circuit in the device goes bad, it may stop charging altogether(not really too terrible of a thing), or it may overcharge the batteries until the vent(this one is pretty bad).
When you have a mod, you have a cheap item that was primarily made to take an imput power, adjust it to the proper output voltage, and feed that to a certain connector. The charging of a battery is a secondary function. It is often accomplished by means of using a very cheap charging circuit. When you have a dedicated charger, it was designed with one function in mind: to charge batteries. Therefore, they typically put a MUCH better charging circuit in something specifically made for charging batteries. This is why people recommend using the external dedicated charger.
yeah i get that
I am going to buy a charger (not a wall charger) but a dedicated battery charger, that cuts of charging when done. And then i'm going to stay below 60W using my VTC mini with the battery LG HG2 and make sure the battery newer empties out. Isn't that the proper "rules" to follow for a vaping noob like me?