I have an amusing experiment with my smart phone charger. That is, after charging it fully, I connect its input and output toghether, and get surprise result.
Could you see in my youtube clip and give your explanation herehttps://www.youtube.com/watch?v=-XtVLUv4pgg
I'm amazed at the results.. it didn't catch fire like it should have. You basically created a hard short and got lucky. The only reason i can think of is internal software to regulate discharge and perhaps the looping wire was high enough gauge to carry the current without generating a lot of heat. You should avoid future experiments if you can not conduct them in a responsible manner.