Im just wondering if anyone has noticed any changes when using anything electrical while having the stim??

I had my implant in August 2010. My husband bought me an iPad recently. I've noticed That while I'm charging my iPad (connected to the mains) and using it at the same time, I can feel an electrical current running through the back cover. Which is silver. So yesterday I decided I would turn off my stim and see what happens. And yep it stopped. But as soon as I turned my stim back on the electrical current was present in the iPad again.

Does anyone know why? Also do you think that it's dangerous to use it whilst connected to the mains?

Would love to hear your thoughts thanks.

Jackie