I brought my new HP in A few weeks ago after feeling a little tingle in the metal palm rest areas. DgTech lady said she'd call HP, but she never got back to me.
I'd already found online before I took it in that problem can be common in laptops with metal palm rest areas. One guy said Sony fixed his by just putting thin plastic over on the metal on each side of the touch pad..
If I have one hand already on the palm rest it doesn't tingle the other hand when I touch it-and it doesn't do it on battery power at all.
Fast this Life of mine was dying
Blind already and calm as Death
Snowflakes on her bosom lying
Scarcely heaving with her breath
Love came by, and having known her
In a dream of Fabled Lands