Imagine a human which could deliver electrical shocks for example by touching someone. He could shock with different intensities from a harmful shock to knocking out a person. Of course he could repeatedly do that as he would have a large amount of "electricity" stockable in the electrical organs.
He would also have electroreceptors that allow him to detect any electric brain activity within a radius of a kilometer, so he can locate people (and recognize familiar persons if they have a particular brain activity). This ability can allow him to analyze the emotions of someone, according to the person's brain activity, but he can only do that if the person is close.
Lets consider that somehow we were able to genetically enhance someone to have these abilities. What organs would be needed so that the person can shock someone at will, stock a lot of electricity, ideally charge an electrical device? Are the electroreceptors possible?
This enhanced human must look like a normal human, so we can consider the enhancements to be "inside".