Like the linked post, iPads are definitely something I notice the most, the back of an iPad can feel completely different when it is plugged in vs when it isn't. Sometimes if it has to charge and I'm not comfortable with the sensation I have to just put it down until it is done.
Sensation is stronger with movement, like I'm feeling the bumps of an EM field or something.
Also it is a little variable, don't know if it is dissociation, variations in the power grid, or both.