So uhm, are you still using batteries to power your things? Common, they’re over 200 years old, it’s too mainstream!
Why not build a nuclear reactor at home instead? Did I catch your eye?
Heh, but seriously now, this article about making such a “reactor” at home caught my eye and amazed me by its simplicity. You should at least check it out 😉
It uses some kind of tritium vials that it seems are safe to handle, they emit weak beta radiation that doesn’t pass the glass. Although somebody should test these out with a Geiger counter :).